Anchorage, Alaska Weather Conditions

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Current Conditions

  • 17°
  • Clear
  • Wind: Calm
  • Humidity: 84%
  • Visibility: 10.0 miles
  • Dew Point: 13°
  • Pressure: 28.88 in. -

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Next 12 Hours

3  pm
6  pm
9  pm
12  am
3  am
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Fog
Fog
Fog
Fog
Chance of Snow
Chance of Snow
23°
21°
19°
21°
21°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Fog
  • High: 27 °
  • Low: 18 °
  • Fog
  • Sunday
  • Chance of Snow
  • High: 27 °
  • Low: 21 °
  • Chance of Snow
  • Monday
  • Chance of Snow
  • High: 28 °
  • Low: 19 °
  • Chance of Snow
  • Tuesday
  • Chance of Snow
  • High: 25 °
  • Low: 14 °
  • Chance of Snow
  • Wednesday
  • Mostly Cloudy
  • High: 25 °
  • Low: 18 °
  • Mostly Cloudy

Forecast for Anchorage, Alaska

Updated: 6:00 AM AKST on December 20, 2014

  • Saturday

    Partly cloudy. Fog early. High of 27F. Winds from the NNE at 5 to 10 mph.

  • Saturday Night

    Partly cloudy in the evening, then overcast with a chance of snow. Fog overnight. Low of 18F. Winds less than 5 mph. Chance of snow 40%.

  • Sunday

    Overcast with a chance of snow. Fog early. High of 27F. Winds less than 5 mph. Chance of snow 70% with accumulations up to 1 in. possible.

  • Sunday Night

    Mostly cloudy with a chance of snow in the evening, then overcast with a chance of snow. Fog overnight. Low of 21F. Winds less than 5 mph. Chance of snow 70% with accumulations up to 1 in. possible.

  • Monday

    Overcast with a chance of snow in the morning, then partly cloudy with a chance of snow. High of 28F. Winds less than 5 mph. Chance of snow 40%.

  • Monday Night

    Partly cloudy with a chance of snow in the evening, then overcast with a chance of snow. Fog overnight. Low of 19F. Winds less than 5 mph. Chance of snow 70% with accumulations up to 2 in. possible.

  • Tuesday

    Partly cloudy with a chance of snow in the morning, then overcast. Fog early. High of 25F. Winds from the NNW at 5 to 10 mph. Chance of snow 20%.

  • Tuesday Night

    Clear. Low of 14F. Winds less than 5 mph.

  • Wednesday

    Mostly cloudy. High of 25F. Winds less than 5 mph.

  • Wednesday Night

    Mostly cloudy. Low of 18F. Winds from the NE at 5 to 10 mph.

  • Thursday

    Partly cloudy with a chance of snow. Fog early. High of 21F. Winds from the NNE at 5 to 10 mph. Chance of snow 20% with accumulations up to 1 in. possible.

  • Thursday Night

    Partly cloudy with a chance of snow. Fog overnight. Low of 10F. Winds less than 5 mph. Chance of snow 20% with accumulations up to 2 in. possible.

  • Friday

    Partly cloudy. Fog early. High of 14F. Winds less than 5 mph.

  • Friday Night

    Mostly cloudy. Fog overnight. Low of 5F. Winds less than 5 mph.

  • Saturday

    Partly cloudy. High of 32F. Winds less than 5 mph.

  • Saturday Night

    Mostly cloudy. Low of 21F. Winds from the ENE at 5 to 10 mph.

  • Sunday

    Overcast with a chance of rain. High of 39F. Winds less than 5 mph. Chance of rain 20%.

  • Sunday Night

    Overcast with a chance of snow. Low of 30F. Winds less than 5 mph. Chance of snow 20%.

  • Monday

    Overcast with a chance of snow. High of 37F. Winds less than 5 mph. Chance of snow 30%.

  • Monday Night

    Mostly cloudy with a chance of snow. Low of 28F. Winds less than 5 mph. Chance of snow 50% with accumulations up to 2 in. possible.

  • Tuesday

    Mostly cloudy with a chance of snow. High of 36F. Winds less than 5 mph. Chance of snow 30% with accumulations up to 1 in. possible.

  • Tuesday Night

    Overcast. Low of 32F. Winds less than 5 mph.

  • Wednesday

    Clear. High of 37F. Winds from the East at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Alaska Industrial Hardware on Viking Dr, Anchorage, AK

Updated: 3:49 PM AKST

Temperature: 13.8 °F Dew Point: 12 °F Humidity: 92% Wind: Calm Pressure: 28.89 in Hourly Precipitation: 0.00 in Windchill: 14 °F Graphs

Location: Tikishla Park, Anchorage, AK

Updated: 3:53 PM AKST

Temperature: 14.0 °F Dew Point: 14 °F Humidity: 99% Wind: Calm Pressure: 29.15 in Hourly Precipitation: - Windchill: 14 °F Graphs

Location: Westchester Lagoon, Anchorage, AK

Updated: 4:03 PM AKST

Temperature: 19.8 °F Dew Point: 17 °F Humidity: 88% Wind: ESE at 2.0 mph Pressure: 28.90 in Hourly Precipitation: 0.00 in Windchill: 20 °F Graphs

Location: KTUU-TV, Anchorage, AK

Updated: 4:03 PM AKST

Temperature: 18.0 °F Dew Point: 18 °F Humidity: 100% Wind: Calm Pressure: 28.90 in Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: Turnagain, Anchorage, AK

Updated: 4:02 PM AKST

Temperature: 21.1 °F Dew Point: 15 °F Humidity: 77% Wind: North at - Pressure: 28.91 in Hourly Precipitation: - Windchill: 21 °F Graphs

Location: Alaska Science Center, Anchorage, AK

Updated: 4:01 PM AKST

Temperature: 21.2 °F Dew Point: 18 °F Humidity: 86% Wind: Calm Pressure: 28.43 in Hourly Precipitation: 0.00 in Windchill: 21 °F Graphs

Location: Waldron Drive, Anchorage, AK

Updated: 4:03 PM AKST

Temperature: 17.4 °F Dew Point: 13 °F Humidity: 82% Wind: Calm Pressure: 28.92 in Hourly Precipitation: 0.00 in Windchill: 17 °F Graphs

Location: West Turnagain, Anchorage, AK

Updated: 3:50 PM AKST

Temperature: 20.4 °F Dew Point: 17 °F Humidity: 87% Wind: Calm Pressure: 28.82 in Hourly Precipitation: 0.00 in Windchill: 20 °F Graphs

Location: Earthquake Park, Anchorage, AK

Updated: 3:58 PM AKST

Temperature: 19.2 °F Dew Point: 14 °F Humidity: 80% Wind: Calm Pressure: 28.84 in Hourly Precipitation: - Windchill: 19 °F Graphs

Location: Earthquake Park, Anchorage, AK

Updated: 3:58 PM AKST

Temperature: 19.2 °F Dew Point: 14 °F Humidity: 80% Wind: Calm Pressure: 28.84 in Hourly Precipitation: - Windchill: 19 °F Graphs

Location: Castle Heights, Anchorage, AK

Updated: 3:53 PM AKST

Temperature: 18.5 °F Dew Point: 16 °F Humidity: 91% Wind: Calm Pressure: 28.87 in Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: Turpin, Anchorage, AK

Updated: 4:02 PM AKST

Temperature: 15.8 °F Dew Point: 8 °F Humidity: 70% Wind: Calm Pressure: 29.15 in Hourly Precipitation: 0.00 in Windchill: 16 °F Graphs

Location: Matthew Paul Way, Anchorage, AK

Updated: 3:52 PM AKST

Temperature: 17.1 °F Dew Point: 15 °F Humidity: 92% Wind: Calm Pressure: 28.88 in Hourly Precipitation: 0.00 in Windchill: 17 °F Graphs

Location: Reflection Lake, Anchorage, AK

Updated: 4:01 PM AKST

Temperature: 14.5 °F Dew Point: 14 °F Humidity: 99% Wind: Calm Pressure: 29.00 in Hourly Precipitation: - Windchill: 14 °F Graphs

Location: KL7YK, Anchorage, AK

Updated: 4:03 PM AKST

Temperature: 17.8 °F Dew Point: 10 °F Humidity: 71% Wind: Calm Pressure: 28.53 in Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: Muldoon, Anchorage, AK

Updated: 4:03 PM AKST

Temperature: 13.7 °F Dew Point: 12 °F Humidity: 92% Wind: Calm Pressure: 28.86 in Hourly Precipitation: 0.00 in Windchill: 14 °F Graphs

Location: KL7AIR, Elmendorf AFB, AK

Updated: 4:03 PM AKST

Temperature: 20.3 °F Dew Point: 12 °F Humidity: 70% Wind: SE at 2.1 mph Pressure: 29.33 in Hourly Precipitation: 0.00 in Windchill: 20 °F Graphs

Location: Cherry Perry (Below TotemTheater), Anchorage, AK

Updated: 4:00 PM AKST

Temperature: 12.8 °F Dew Point: 10 °F Humidity: 87% Wind: Calm Pressure: 28.92 in Hourly Precipitation: 0.00 in Windchill: 13 °F Graphs

Location: Chugach Foothills, Anchorage, AK

Updated: 4:00 PM AKST

Temperature: 13.5 °F Dew Point: 10 °F Humidity: 86% Wind: Calm Pressure: 28.79 in Hourly Precipitation: 0.00 in Windchill: 14 °F Graphs

Location: Service High School-AWWU, Anchorage, AK

Updated: 4:03 PM AKST

Temperature: 16.7 °F Dew Point: 13 °F Humidity: 84% Wind: Calm Pressure: 28.88 in Hourly Precipitation: 0.00 in Windchill: 17 °F Graphs

Location: Campbell Lake, Anchorage, AK

Updated: 3:49 PM AKST

Temperature: 18.7 °F Dew Point: 16 °F Humidity: 91% Wind: Calm Pressure: 29.50 in Hourly Precipitation: - Windchill: 19 °F Graphs

Location: Mid Hillside Zoo, Anchorage, AK

Updated: 4:03 PM AKST

Temperature: 18.1 °F Dew Point: 13 °F Humidity: 79% Wind: Calm Pressure: 17.72 in Hourly Precipitation: 0.00 in Windchill: 18 °F Graphs

Location: Casey Cusack Estates, Anchorage, AK

Updated: 4:01 PM AKST

Temperature: 16.9 °F Dew Point: 16 °F Humidity: 97% Wind: Calm Pressure: 29.14 in Hourly Precipitation: - Windchill: 17 °F Graphs

Location: Oceanview, Anchorage, AK

Updated: 4:03 PM AKST

Temperature: 18.7 °F Dew Point: 10 °F Humidity: 68% Wind: Calm Pressure: 29.24 in Hourly Precipitation: 0.00 in Windchill: 19 °F Graphs

Location: AKDOT Seward Highway @ Huffman Road MP 120, Anchorage, AK

Updated: 3:20 PM AKST

Temperature: 21 °F Dew Point: 17 °F Humidity: 83% Wind: NE at 1 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 21 °F Graphs

Location: Botanical, Anchorage, AK

Updated: 4:03 PM AKST

Temperature: 21.2 °F Dew Point: 12 °F Humidity: 66% Wind: NNE at 1.6 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Windchill: 21 °F Graphs

Location: Prospect Heights, Anchorage, AK

Updated: 4:03 PM AKST

Temperature: 20.7 °F Dew Point: 11 °F Humidity: 66% Wind: Calm Pressure: 28.82 in Hourly Precipitation: 0.00 in Windchill: 21 °F Graphs

Location: Tributary Cir, Anchorage, AK

Updated: 4:03 PM AKST

Temperature: 21.4 °F Dew Point: 17 °F Humidity: 84% Wind: NNE at 2.3 mph Pressure: 28.85 in Hourly Precipitation: 0.00 in Windchill: 21 °F Graphs

Location: Johns Park, Anchorage, AK

Updated: 4:02 PM AKST

Temperature: 21.0 °F Dew Point: 17 °F Humidity: 83% Wind: Calm Pressure: 28.90 in Hourly Precipitation: 0.00 in Windchill: 21 °F Graphs

Location: Upper Hillside, Anchorage, AK

Updated: 4:00 PM AKST

Temperature: 23.3 °F Dew Point: - Humidity: - Wind: East at 1.0 mph Pressure: 28.77 in Hourly Precipitation: 0.00 in Windchill: 23 °F Graphs

Location: Rogers Park, Anchorage, AK

Updated: 4:00 PM AKST

Temperature: 16.9 °F Dew Point: 16 °F Humidity: 95% Wind: North at - Pressure: 28.94 in Hourly Precipitation: - Windchill: 17 °F Graphs

Location: Abbott Loop, Anchorage, AK

Updated: 4:02 PM AKST

Temperature: 15.6 °F Dew Point: 9 °F Humidity: 74% Wind: North at - Pressure: 28.67 in Hourly Precipitation: - Windchill: 16 °F Graphs

Location: Sand Lake, Anchorage, AK

Updated: 4:01 PM AKST

Temperature: 18.7 °F Dew Point: 17 °F Humidity: 92% Wind: North at - Pressure: 28.91 in Hourly Precipitation: - Windchill: 19 °F Graphs

Location: Bayshore / Klatt, Anchorage, AK

Updated: 4:00 PM AKST

Temperature: 19.2 °F Dew Point: 19 °F Humidity: 98% Wind: North at - Pressure: 28.91 in Hourly Precipitation: 0.00 in Windchill: 19 °F Graphs

Location: Old Seward / Oceanview, Anchorage, AK

Updated: 4:02 PM AKST

Temperature: 22.1 °F Dew Point: 18 °F Humidity: 84% Wind: North at - Pressure: 28.96 in Hourly Precipitation: - Windchill: 22 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Southcentral and southwest Alaska forecast discussion 
National Weather Service Anchorage Alaska 
422 am akst Sat Dec 20 2014 


Analysis and upper levels... 


An elongated trough of low pressure extending from the Kamchatka 
peninsula to the Pacific northwest coast of the Continental United 
States continues to amplify as it interacts with an impressive 180+ 
knots jet streak over the North Pacific. A complex low resides in 
this elongated trough with low centers south of Atka...south of 
the Shumagin Islands and west of the Alaska Panhandle. A deformation 
zone developed over Dutch Harbor/Unalaska due to the proximity of 
the low south of Adak and south of the Shumagin Islands and 
continues northward toward the Pribilof Islands. This has allowed 
light rain and enhanced cloud cover to reside over these locations 
during the overnight hours. The low west of the Alaska Panhandle is 
tracking rapidly northward toward the northern Gulf. This low 
combined with the low south of the Shumagin Islands has increased 
the pressure gradient across the northern Gulf allowing for a gale 
force (40 kt) barrier jet to develop. A showery regime has set up 
over the northern Gulf with minor instability and weak upper level 
disturbances pushing across the area. Much of the shower activity 
remained offshore with offshore flow keeping the low levels 
dry...forcing precipitation to evaporate prior to reaching the 
ground. Southwest Alaska is also seeing offshore flow which has 
kept them on the dry side as well. 


&& 


Model discussion... 


Models have changed a good bit in the last 24 hours. Last night 
models indicated the low west of the Alaska Panhandle would 
dissipate over the northern Gulf and keep much of southcentral 
Alaska on the dry side. However...there is great model consensus 
regarding this low now holding together a bit longer and moving 
over the Kenai Peninsula on Sunday and into Monday when it begins 
to elongate and become more of a broad trough vs a closed low. 
This significantly impacts the overall forecast for southcentral 
Alaska to where chances for snowfall over the Anchorage and mat-su 
valley are significantly higher if the model consensus pans out. 
The 00z NAM was a bit on the slow side and was an outlier but the 
06z NAM came in alignment with the faster solution depicted by the 
GFS and European model (ecmwf). This just continues to increase the confidence in 
the models for this forecast package. The European model (ecmwf) was utilized 
through the short term in the eastern domain with a blend of the 
GFS and European model (ecmwf) through the midterm and the beginning of the 
extended grids. 


Out west...models are in good agreement with the low south of Atka 
moving eastward while weakening over the next several days before 
it phases with the low pressure that moves over the Kenai 
Peninsula late this weekend. Weak ridging will develop in the 
wake of this low but an area of low pressure over the Kamchatka 
peninsula will drive a front into the western Bering Sea by late 
Sunday. Models then diverge on an area of low pressure developing 
over the western Bering Sea during the beginning of the upcoming 
week. Regardless...a rapidly developing low with maximum gale force 
winds is expected as the developing low moves into the Bering Sea. 
A mix of the 00z NAM and European model (ecmwf) was utilized on the western domain. 


&& 
Short term forecast southcentral Alaska (days 1 and 2)... 


A series of generally weak surface lows and upper level waves 
rotating around the Gulf are staying primarily south of the 
northern Gulf Coast. There is occasionally a band of precipitation which 
makes it northward into Prince William Sound but persistent 
offshore flow is maintaining dry air in the low levels...so much 
of the precipitation is evaporating before it reaches the ground. 


A stronger surface low and upper wave are about to move into the 
eastern Gulf and change all of this. The latest numerical guidance 
continues to trend toward a stronger and faster solution in which 
the low makes it all the way to Prince William Sound region 
by Sunday morning and then becomes very weak and diffuse as it 
crosses the Kenai Peninsula Sunday afternoon. This is a Stark 
difference from prior model solutions which stalled the low over 
the Gulf pushing very little precipitation onshore. It is very 
significant that the guidance weakens the low prior to reaching 
the Kenai Peninsula. This means moisture can freely advect across 
the mountains into Anchorage and the mat-su without any impact 
from downslope flow that we so often see in these areas. 


The upper flow also looks very favorable for precipitation...with a 
short-wave accompanying the arrival of the surface low. The upper 
low which is nearly stationary near Kodiak Island then opens up 
into a trough and lifts northward toward Anchorage...which could 
result in a prolonged period of vertical motion over portions of 
southcentral. When you put this all together it is looking like 
the best chance of accumulating snow in quite some time for 
Anchorage on up to the Matanuska Valley beginning Sunday and 
possibly extending into Monday. 


Based on the excellent agreement in the numerical guidance will 
up probability of precipitation area-wide. There is certainly some uncertainty in the 
details of the upper waves moving through...so will start out with 
minor snow accumulation amounts...although there is potential for 
more than a couple inches of snow. 


&& 


Short term forecast southwest Alaska (sunday and monday)... 


The remnants of a weakening low positioned over Kodiak will 
continue to bring scattered showers along the Aleutian Range and 
parts of the Alaska Peninsula through Monday. The rest of 
southwest Alaska region will have offshore flow resulting in dry 
conditions. By late Sunday an upper level ridge of high pressure 
will build into the eastern Bering Sea. This synoptic feature 
combined with the cold air filtering into the region from the 
north will bring cooler temperatures resulting in below normal 
temperatures through Monday. 


&& 


Short term forecast Bering Sea/Aleutians (sunday and monday)... 
the gale force low located just south of Atka this morning will 
slowly weaken as it tracks eastward through Sunday. This will 
result in gusty northwesterly winds on the backside of the low 
along the western to central Aleutian chain through the weekend. 
By Sunday night a weather front will approach the western 
Aleutians bringing gale force southerly winds heading into Monday. 
This will bring warmer temperatures to the western Aleutians with 
precipitation changing from snow to rain showers. The Bering Sea 
will continue to have northerly flow with cold air filtering into 
the northern Bering Sea through Monday. The western and central 
Bering Sea winds will shift from northerly to southerly by Monday 
as the weather front tracks from the western Aleutians into the 
western Bering Sea. 


&& 


Long term forecast (days 3 through 7)... 
a period of widespread snow looks to linger through the day on 
Monday across much of southcentral Alaska as the trough over the 
western Gulf lifts northward through the area. This will then 
give way to a more showery regime for the remainder of the week as 
the longwave trough over the Bering keeps generally southwesterly 
flow over the Mainland...with various disturbances moving towards 
the Gulf periodically enhancing precipitation potential across the 
region. 


Meanwhile...models continue to trend stronger with a deep low and 
associated front poised to move over the western Aleutians late 
Monday into Tuesday...bringing rain and gale force winds to a wide 
swath of the western Bering and potential storm force winds to 
coastal waters of the western Aleutians. Rainy and windy 
conditions will then remain in the forecast through much of the 
week as the front moves northward through the Bering and 
gradually weakens...with guidance hinting at another deep system 
possibly approaching the western Aleutians by the end of the week. 


&& 




Afc watches/warnings/advisories... 
public...none 
marine...Gale Warning 119 130 131 138 176 177 178 
heavy freezing spray 180 181 185 
fire weather...none 


&& 


$$ 


Synopsis and model discussion...mmc 
southcentral Alaska...seb 
southwest Alaska/Bering Sea/Aleutians...pld 
long term...cumulonimbus 






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