Juneau, Alaska Weather Conditions

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Current Conditions

  • 41°
  • Overcast
  • Wind: ESE 9 mph
  • Humidity: 51%
  • Visibility: 10.0 miles
  • Dew Point: 24°
  • Pressure: 30.23 in. -
  • Heat Index: 35

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Next 12 Hours

5  pm
8  pm
11  pm
2  am
5  am
Overcast
Overcast
Overcast
Overcast
Overcast
Overcast
Overcast
Overcast
Chance of Rain
Chance of Rain
39°
35°
35°
35°
35°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Rain
  • High: 40 °
  • Low: 35 °
  • Rain
  • Thursday
  • Rain
  • High: 41 °
  • Low: 34 °
  • Rain
  • Friday
  • Chance of Rain
  • High: 44 °
  • Low: 35 °
  • Chance of Rain
  • Saturday
  • Chance of Rain
  • High: 43 °
  • Low: 37 °
  • Chance of Rain
  • Sunday
  • Snow
  • High: 42 °
  • Low: 31 °
  • Snow

Forecast for Juneau, Alaska

Updated: 4:16 PM AKST on January 03, 2015

  • Tuesday

    Chance of late night showers. Lows overnight in the low 30s.

  • Tuesday Night

    Cloudy with occasional showers overnight. Low 33F. Winds light and variable. Chance of rain 40%.

  • Wednesday

    Rain likely. Temps nearly steady in the upper 30s. Winds ESE at 5 to 10 mph. Chance of rain 80%. Rainfall near a quarter of an inch.

  • Wednesday Night

    Cloudy with periods of rain. Low around 35F. Winds light and variable. Chance of rain 80%. Rainfall around a half an inch.

  • Thursday

    Rain likely. High 41F. Winds light and variable. Chance of rain 70%. Rainfall around a quarter of an inch.

  • Thursday Night

    Cloudy with occasional rain showers. Low 34F. Winds light and variable. Chance of rain 60%.

  • Friday

    Overcast with rain showers at times. High 44F. Winds ESE at 5 to 10 mph. Chance of rain 50%.

  • Friday Night

    Showers early becoming a steady light rain late. Low near 35F. Winds light and variable. Chance of rain 60%.

  • Saturday

    Cloudy with showers. High 43F. Winds SSE at 5 to 10 mph. Chance of rain 50%.

  • Saturday Night

    Rain likely. Low 37F. Winds SSE at 5 to 10 mph. Chance of rain 90%. Rainfall near a half an inch.

  • Sunday

    Rain...mixing with snow in the afternoon. High 42F. Winds SSW at 10 to 15 mph. Chance of rain 90%.

  • Sunday Night

    Occasional snow showers. Low 31F. Winds SSW at 5 to 10 mph. Chance of snow 60%. Snow accumulating 1 to 3 inches.

  • Monday

    Snow showers. High 36F. Winds SSW at 5 to 10 mph. Chance of snow 60%. About one inch of snow expected.

  • Monday Night

    Mostly cloudy with snow showers developing after midnight. Low around 20F. Winds E at 5 to 10 mph. Chance of snow 40%. Snow accumulations less than one inch.

  • Tuesday

    Snow showers early. Peeks of sunshine later. High 34F. Winds NE at 5 to 10 mph. Chance of snow 40%.

  • Tuesday Night

    Partly cloudy skies. Low 22F. Winds NE at 5 to 10 mph.

  • Wednesday

    Mostly cloudy. High 29F. Winds NE at 10 to 15 mph.

  • Wednesday Night

    Snow likely. Low 18F. Winds NNE at 10 to 15 mph. Chance of snow 60%. 3 to 5 inches of snow expected.

  • Thursday

    Snow likely. High 29F. Winds NE at 10 to 15 mph. Chance of snow 60%. Snow accumulating 1 to 3 inches.

  • Thursday Night

    Variably cloudy with snow showers. Low around 20F. Winds NE at 5 to 10 mph. Chance of snow 40%. Snow accumulating 1 to 3 inches.

  • Friday

    Variably cloudy with snow showers. High 33F. Winds ENE at 5 to 10 mph. Chance of snow 40%. Snow accumulating 1 to 3 inches.

  • Friday Night

    Variably cloudy with snow showers. Low 23F. Winds light and variable. Chance of snow 40%. Snowfall around one inch.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Dimond Park, Juneau, AK

Updated: 5:48 PM AKST

Temperature: 41.5 °F Dew Point: 28 °F Humidity: 59% Wind: Calm Pressure: 30.08 in Hourly Precipitation: - Windchill: 42 °F Graphs

Location: AKDOT Glacier Highway/Egan Drive @ MP 3, Juneau, AK

Updated: 4:40 PM AKST

Temperature: 42 °F Dew Point: 20 °F Humidity: 40% Wind: East at 7 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Auke Bay, Juneau, AK

Updated: 5:48 PM AKST

Temperature: 38.1 °F Dew Point: 32 °F Humidity: 79% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: HADS MENDENHALL R NR AUKE BAY AK USGS, Juneau, AK

Updated: 5:15 PM AKST

Temperature: 39 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: West Juneau, Juneau, AK

Updated: 5:30 PM AKST

Temperature: 41.2 °F Dew Point: 30 °F Humidity: 63% Wind: Calm Pressure: 30.22 in Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: Blueberry Hills, Juneau, AK

Updated: 5:48 PM AKST

Temperature: 39.0 °F Dew Point: 26 °F Humidity: 59% Wind: ESE at 8.0 mph Pressure: 30.25 in Hourly Precipitation: 0.00 in Windchill: 33 °F Graphs

Location: AKDOT Thane Road Snow Slide Gulch @ MP 1.9, Juneau, AK

Updated: 4:59 PM AKST

Temperature: 41 °F Dew Point: 26 °F Humidity: 55% Wind: SE at 9 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 35 °F Graphs

Location: AKDOT Glacier Highway @ Cohen Drive MP 21, Auke Bay, AK

Updated: 4:43 PM AKST

Temperature: 38 °F Dew Point: 30 °F Humidity: 72% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: 25 mi. Happy Dog Sub., Juneau, AK

Updated: 5:44 PM AKST

Temperature: 36.4 °F Dew Point: 31 °F Humidity: 81% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Windchill: 36 °F Graphs

Location: Eaglecrest Ski Area, Juneau, AK

Updated: 5:47 PM AKST

Temperature: 36.8 °F Dew Point: 27 °F Humidity: 68% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: APRSWXNET Juneau AK US, Juneau, AK

Updated: 5:15 PM AKST

Temperature: 29 °F Dew Point: 23 °F Humidity: 77% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 29 °F Graphs

Location: Eaglecrest Ski Area, Juneau, AK

Updated: 5:48 PM AKST

Temperature: 29.8 °F Dew Point: 25 °F Humidity: 81% Wind: North at - Pressure: - Hourly Precipitation: - Windchill: 30 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Southeast Alaska forecast discussion 
National Weather Service Juneau Alaska 
253 PM akst Tuesday Mar 3 2015 


Short term...short range forecast becoming a bit more active as 
two weak systems move through over the next 24 hours. System 
number one is over the Panhandle right now and so far it does not 
have much to show for it. Yakutat is the only place that has seen 
any rain so far with around a tenth of an inch collected as of 
11 am. The rest of the Panhandle has just seen an increase in 
cloud cover overnight as an upper level ridge over the Panhandle 
has suppressed most of the precipitation with this front. Though some 
light rain showers along the outer coast are not out of the 
question as Biorka Island radar does show some very light precipitation 
just offshore and Sitka has observed some light rain this 
afternoon. As for wind, the 25 knots barrier jet near Cape Suckling 
this morning is the highest winds anywhere in the forecast area 
with every place else running 15 knots or less. 


For tonight not much change from what is currently going on. 
Onshore flow will continue to bring light rain to the Yakutat 
area with the rest of the Panhandle continuing to deal with cloud 
cover. I can not completely rule out some light precipitation over the 
northern Panhandle with the ongoing light onshore flow overnight. 
So have kept a chance of light rain (and chance of light rain and 
snow for areas that get cold enough overnight. I.E. Skagway, and 
haines) for northern areas with some likely and categorical probability of precipitation 
for the outer coast due to the showers seen on radar. With the 
continuing cloud cover overnight lows were raised a few degrees 
with some northern areas now above freezing for lows as there is 
not as much chance for areas to radiate out overnight. 


For tomorrow the trend is wetter as a second slightly stronger 
front moves in from the west spreading more significant rain 
across the Panhandle as it comes. Yakutat will see it first with 
rain rates increasing late tonight or early tomorrow. The rest of 
the Panhandle will see rain start up throughout Wednesday morning. 
Little in the way of moisture associated with this feature as 
current precipitable water retrievals show only around a quarter to 
half inch of precipitable water at most. So rainfall amounts 
through tomorrow afternoon are expected to only be in the quarter 
inch range. 


As for wind, no significant change across the Panhandle as 
pressure gradients remain weak. Most winds remain at 15 knots or less 
through tomorrow afternoon. Even the winds in the northern Gulf will be 
diminishing this evening as the initial weak surface front moves 
onshore. The Gulf will be left with 15 knots winds through tomorrow 
even with the next weak front moving through. 


Short range models were in good agreement though there were some 
minor disagreements on how widespread the light rain would be 
tonight and on strength of the weak low in the northwest Gulf tomorrow. 
Elected to use NAM and European model (ecmwf) for guidance today as both seemed to 
have decent consistency with short range features. 


Long term...meridional flow pattern moving a series of 
shortwaves over the Alaska Gulf this week will transition to a more 
zonal flow pattern for the weekend then transition back to more 
amplified wave for the start of next week. The shortwave in the 
Gulf this week have been on the weak side with winds generally 
less than 20 knots and low quantitative precipitation forecast values. The wave moving into the Gulf 
and associated front will move over the Panhandle Wednesday night 
into Thursday. Another wave over the northern Gulf will track over 
the area Friday while interacting with a wave extending from a 
closed low in the North Pacific. Meanwhile a closed low is 
tracking from the Bering Sea, moving across the Alaska interior then 
dropping down toward the Panhandle Sunday into Monday then exiting 
to the south through Tuesday. 


Models were showing mesoscale differences with the weaker waves 
with main differences in pop fields. Decided that with onshore 
flow to keep with a general blend with probability of precipitation at chance or likely. 
However not counting out a few breaks developing behind the waves. 
With weak pressure gradient no significant winds expected through 
the week. The Saturday into Sunday system is showing a more 
organized low center with higher quantitative precipitation forecast and winds. Gulf winds will 
pick up to small craft levels along the front with inner channel 
winds, especially over the northern Panhandle, picking up to small 
craft as southerly pressure gradient tightens. 


Temperatures keeping in the low to middle 40s during the day and low 
to middle 30s overnight. Precipitation should be mostly rain through the 
week, with some possible snow mixed over the northern regions and 
at higher elevations at 850 mb temperatures do drop into the -2 to -4 c 
range. The precipitation/cloud cover should limit much of a diurnal 
temperature swing. By the start of next week there is indication of 
a deep middle level trough digging from the Alaska interior as the next 
surface low moves toward the Panhandle. 850 mb temperatures with this 
trough dropping into the -10 to -20 c range. Continued the trend 
of cooling off temperatures with this next wave and as of now this 
is setting up for a potential snow event. While there was more 
model spread with the weak wave details models began to fall in 
line with this larger/stronger system. Potential for snow is still 
toward then end of the forecast range so expect changes from now 
to then to occur, but for now the snow potential is there. 


The 12z European model (ecmwf) began to show some shifts from previous run and 
other models early on. Nudged grids early on with some NAM then 
went with a European model (ecmwf)/GFS blend then transitioned to new wpc. Changes 
were very minor with at most 5 knots wind speed changes and a couple 
of degrees temperature change. Forecast overall is average with higher 
confidence in a wet pattern through the week but lower confidence 
is timing of precipitation due to the model spread. 


&& 


Ajk watches/warnings/advisories... 
public...none. 
Marine...none. 


&& 


$$ 


Eal/prb 


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