Juneau, Alaska Weather Conditions

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Current Conditions

  • 47°
  • Mostly Cloudy
  • Wind: ESE 8 mph
  • Humidity: 71%
  • Visibility: 10.0 miles
  • Dew Point: 38°
  • Pressure: 29.77 in. -

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Next 12 Hours

5  pm
8  pm
11  pm
2  am
5  am
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Chance of Rain
Chance of Rain
Rain
Rain
47°
43°
41°
39°
39°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Rain
  • High: 46 °
  • Low: 39 °
  • Rain
  • Wednesday
  • Rain
  • High: 45 °
  • Low: 37 °
  • Rain
  • Thursday
  • Chance of Rain
  • High: 47 °
  • Low: 39 °
  • Chance of Rain
  • Friday
  • Chance of Rain
  • High: 47 °
  • Low: 36 °
  • Chance of Rain
  • Saturday
  • Partly Cloudy
  • High: 50 °
  • Low: 37 °
  • Partly Cloudy

Forecast for Juneau, Alaska

Updated: 4:17 PM AKDT on January 27, 2015

  • Monday

    Rain developing late. Lows overnight in the upper 30s.

  • Monday Night

    Becoming cloudy with occasional rain late. Low 37F. Winds NE at 5 to 10 mph. Chance of rain 90%.

  • Tuesday

    Rain. High 46F. Winds E at 15 to 25 mph. Chance of rain 100%. Rainfall around a half an inch.

  • Tuesday Night

    Cloudy with periods of rain. Low 39F. SE winds at 10 to 20 mph, decreasing to 5 to 10 mph. Chance of rain 90%. Rainfall around a half an inch.

  • Wednesday

    Rain. High around 45F. Winds ESE at 10 to 20 mph. Chance of rain 90%. Rainfall near a half an inch.

  • Wednesday Night

    Light rain early...then remaining cloudy with showers late. Low 37F. Winds ENE at 5 to 10 mph. Chance of rain 80%.

  • Thursday

    Considerable cloudiness with occasional rain showers. High 47F. Winds E at 10 to 20 mph. Chance of rain 50%.

  • Thursday Night

    Cloudy with showers. Low 39F. Winds E at 5 to 10 mph. Chance of rain 60%.

  • Friday

    Rain showers early with some sunshine later in the day. High 47F. Winds E at 5 to 10 mph. Chance of rain 50%.

  • Friday Night

    A few clouds. Low 36F. Winds light and variable.

  • Saturday

    Intervals of clouds and sunshine. High near 50F. Winds NE at 5 to 10 mph.

  • Saturday Night

    Mostly clear skies. Low 37F. Winds light and variable.

  • Sunday

    A few clouds early, otherwise mostly sunny. High 52F. Winds NE at 5 to 10 mph.

  • Sunday Night

    Mostly clear skies. Low near 40F. Winds light and variable.

  • Monday

    Mostly sunny skies. High 56F. Winds N at 5 to 10 mph.

  • Monday Night

    Mainly clear. Low near 40F. Winds light and variable.

  • Tuesday

    A mainly sunny sky. High near 55F. Winds N at 5 to 10 mph.

  • Tuesday Night

    Generally fair. Low 42F. Winds ENE at 5 to 10 mph.

  • Wednesday

    Mostly sunny skies during the morning hours will give way to occasional showers in the afternoon. High 54F. Winds SE at 10 to 15 mph. Chance of rain 40%.

  • Wednesday Night

    Cloudy with occasional rain showers. Low 41F. Winds ESE at 5 to 10 mph. Chance of rain 50%.

  • Thursday

    Cloudy with showers. High 54F. Winds SSE at 10 to 15 mph. Chance of rain 40%.

  • Thursday Night

    Cloudy with occasional showers. Low 42F. Winds ESE at 5 to 10 mph. Chance of rain 40%.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: MISC, Juneau, AK

Updated: 5:12 PM AKDT

Temperature: 47 °F Dew Point: 42 °F Humidity: 82% Wind: SE at 3 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: Dimond Park, Juneau, AK

Updated: 5:55 PM AKDT

Temperature: 48.9 °F Dew Point: 39 °F Humidity: 68% Wind: SSW at 6.8 mph Pressure: 29.60 in Hourly Precipitation: - Windchill: 46 °F Graphs

Location: Brother Hood Bridge / Safeway, Juneau, AK

Updated: 5:49 PM AKDT

Temperature: 48.9 °F Dew Point: 38 °F Humidity: 67% Wind: ENE at 6.3 mph Pressure: 29.86 in Hourly Precipitation: - Windchill: 46 °F Graphs

Location: Mendenhall Valley, Juneau, AK

Updated: 5:57 PM AKDT

Temperature: 49.8 °F Dew Point: 39 °F Humidity: 66% Wind: North at - Pressure: 29.68 in Hourly Precipitation: - Windchill: 50 °F Graphs

Location: MISC, Juneau, AK

Updated: 5:18 PM AKDT

Temperature: 48 °F Dew Point: 37 °F Humidity: 65% Wind: North at - Pressure: - Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: AKDOT, Juneau, AK

Updated: 5:20 PM AKDT

Temperature: 46 °F Dew Point: 37 °F Humidity: 70% Wind: ESE at 12 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: Auke Bay, Juneau, AK

Updated: 6:01 PM AKDT

Temperature: 47.3 °F Dew Point: 40 °F Humidity: 77% Wind: Calm Pressure: 29.67 in Hourly Precipitation: 0.00 in Windchill: 47 °F Graphs

Location: HADS, Juneau, AK

Updated: 5:15 PM AKDT

Temperature: 49 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: West Juneau, Juneau, AK

Updated: 6:00 PM AKDT

Temperature: 45.9 °F Dew Point: 41 °F Humidity: 84% Wind: SSE at 1.0 mph Pressure: 29.76 in Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: NOS_NWLON, Auke Bay, AK

Updated: 5:00 PM AKDT

Temperature: 43 °F Dew Point: - Humidity: - Wind: SE at 7 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Windchill: 39 °F Graphs

Location: Blueberry Hills, Juneau, AK

Updated: 5:56 PM AKDT

Temperature: 42.2 °F Dew Point: 40 °F Humidity: 90% Wind: South at 4.0 mph Pressure: 29.80 in Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: AKDOT, Juneau, AK

Updated: 5:28 PM AKDT

Temperature: 43 °F Dew Point: 38 °F Humidity: 83% Wind: SSE at 12 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 37 °F Graphs

Location: South Lena Point, Juneau, AK

Updated: 6:01 PM AKDT

Temperature: 48.7 °F Dew Point: 39 °F Humidity: 70% Wind: Calm Pressure: 30.71 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: AKDOT, Auke Bay, AK

Updated: 5:23 PM AKDT

Temperature: 45 °F Dew Point: 36 °F Humidity: 71% Wind: NW at 1 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 45 °F Graphs

Location: Eaglecrest Ski Area, Juneau, AK

Updated: 5:58 PM AKDT

Temperature: 40.6 °F Dew Point: 36 °F Humidity: 84% Wind: East at 2.2 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 41 °F Graphs

Location: APRSWXNET, Juneau, AK

Updated: 5:18 PM AKDT

Temperature: 40 °F Dew Point: 36 °F Humidity: 87% Wind: East at 3 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 40 °F Graphs

Location: MesoWest, Juneau, AK

Updated: 5:00 PM AKDT

Temperature: 38 °F Dew Point: 37 °F Humidity: 95% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 38 °F Graphs

Location: Eaglecrest Ski Area, Juneau, AK

Updated: 5:58 PM AKDT

Temperature: 32.8 °F Dew Point: 28 °F Humidity: 81% Wind: North at - Pressure: - Hourly Precipitation: - Windchill: 33 °F Graphs

Location: HADS, Douglas, AK

Updated: 5:00 PM AKDT

Temperature: 40 °F Dew Point: 36 °F Humidity: 86% Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: 40 °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 
405 PM akdt Monday Apr 27 2015 


Short term...afternoon WV imagery shows a weakening upper low 
positioned over the Gulf of Alaska. Sharp trough extends south-southeast into the 
northestern Pacific from the Gulf low...and is showing the initial stages of 
a baroclinic Leaf satellite signature. This feature will progress 
to haida gwaii by 12z Tuesday...and then lift north-northeast across the southern/central 
Panhandle through Tuesday afternoon. As this takes place...strong 
surface cyclogenesis is forecast to occur...with low pressure 
bottoming out at around 980 mb between 12-18z Tuesday. 
European model (ecmwf)...NAM...and Gem are all fairly close with the magnitude and 
track of the low...while the GFS was a slightly faster outlier. 
Updated pressure grids reflect 12z European model (ecmwf)/NAM solutions. 


North-northeasterly winds will be prevalent north of the low over the central inside 
waters through midday Tuesday...occasionally reaching small craft 
strength. Meanwhile...intense southerly pressure gradient will develop 
over the southern Panhandle and adjacent marine waters...yielding strong 
winds for akz027-028 by late morning...and gale force winds over 
Clarence Strait and marine zone 41. Future shifts will need to re- 
evaluate for possible upgrade to storm force in Clarence 
Strait...and High Wind Warning for the southern Panhandle land zones. 


As the upper disturbance and associated surface low move into the 
northern Panhandle by late Tuesday afternoon...winds will become southerly over 
most of the region. Small craft winds will spread northward to Stephens 
Passage and possibly Lynn Canal...though the timing is still 
somewhat uncertain. Southeasterly winds may become gusty in Juneau as 
well...and this area too will need to be further evaluated for 
strong wind potential. 


Plume of precipitable water values near 0.8 inch are forecast to be entrained into 
the surface cyclone and spread north across the southern Panhandle late 
tonight. This moisture combined with a deep warm cloud layer will 
favor locally heavy rain occurring from Klawock...Ketchikan...and 
Hyder northward to Petersburg. However...system motion will be 
fast...thus duration of heavy rain will not be long enough to 
result in Hydro issues. After the low passes to the north...cooler 
midlevel temperatures will spread east into the southern Panhandle...which 
will aid in destabilizing the atmosphere and lead to the 
generation of MUCAPE values from 200-400 j/kg. The unstable 
environment combined with forcing for ascent associated with 
several passing upper impulses...as well as terrain related 
ascent...will support a slight chance of thunderstorms during the 
late afternoon. 


Long term...the tight southerly pressure gradients will spread 
north into Lynn Canal as the pressures over the Canadian Yukon 
fall and those across the Panhandle rise. This will easily result 
in gale force southerlies through Lynn Canal and strong wind gusts 
into Skagway. It must be noted that marine MOS guidance is lifting 
sustained winds to 45+ knots Tuesday night. Given a Post-frontal strongly 
convective environment, gale seems probable, and these higher 
sustained wind speeds are feasible. Went ahead and included some 
strong wind gusts through Juneau Tuesday evening as well, given 
pressure gradients of -10 mb between Juneau and Ketchikan. Winds 
over Auke Bay and possibly the Juneau Airport may briefly turn 
southwest tomorrow evening. As stated earlier, timing is not 
completely certain, and things could occur slightly earlier as 
well. Over the central and southern Panhandle winds should be 
trending down. Considering the convective regime, there will 
likely be some gusty periods above the indicated sustains in the 
zones. 


A shortwave behind the strong system lifting north through the 
Panhandle Tuesday will extend a slight thunderstorm threat for 
southeastern Gulf and southern public zones Tuesday night. While 
NAM still indicating the potential of thunderstorms into 
Wednesday, held off on mentioning at this point, as European model (ecmwf) and GFS 
begin to reduce instability with the beginnings of some warmer air 
advection aloft from the west. 


From Wednesday night beyond, the models are recognizing a couple 
of shortwaves skirting eastward across the Gulf of Alaska within a 
zonal track. One should arrive the eastern Gulf on Wednesday night 
with the second Thursday night/Friday. As currently, most of the models 
are indicating the most stable air remaining to the south, we have 
left southeast within a convective regime all week. The forecast 
reads as if there will be no breaks between systems, but 
truthfully, showers will become scattered at times between 
systems, but uncertainty over timing is still great enough to 
demand guessing games so a whitewash is necessary. 


While we are on the subject of showers, we should take a quick 
aside to clarify what we mean between isolated showers, scattered 
showers, numerous showers, and just showers. Each descriptor is 
associated with a percent of measurable precipitation, or "pop" 
forecast. Isolated suggests a 10 to 20 percent chance of 
measurable precipitation received at any particular spot, say, 
where you are. Likewise, scattered refers to 30 to 50 percent, 
and numerous 60 to 70 percent. Contrary to how it may read, 
"numerous" showers generally indicates that shower coverage will 
be such that the chances of getting wet are a little less than 
"showers" without a descriptor. Showers without a descriptor 
suggests a confidence that most everyone will get wet. 


With a wet weak, we cooled temperatures a bit for cloudy and 
showery conditions, perhaps two or three degrees below normal. 
These systems are fairly weak and the generally zonal flow does 
not suggest great quantities of rainfall. 


After the Friday wave slides east into Canada, ridging will 
attempt to set up ahead of a sharper trough that develops into an 
upper low as it arrives in the southwest Gulf. This system looks 
to approach the Panhandle and then drop southeast for early next 
week. As the tourists flock to Southeast Alaska come early may, it 
is possible for a brief span of dry weather for their stay, as 
well as a dry beginning of the week for those of US who call our 
corner of the great land home. 


Used NAM/ec for Tuesday night/Wed. Then blended to Gem, GFS, NAM, and 
ec to account for model spread with waves coming in Wednesday night 
through Friday. Wpc from late Friday Onward. Forecast confidence good 
Tuesday night/Wednesday, and falls to average Wednesday night and 
beyond. 


&& 


Ajk watches/warnings/advisories... 
public...strong wind from Tuesday morning through Tuesday afternoon for 
akz027. 
Strong wind from Tuesday morning through Tuesday afternoon for 
akz028. 
Marine...Gale Warning for pkz036-041. 
Small Craft Advisory for pkz012-013-031>035-042-043-051-052. 


&& 


$$ 


Garner/Adkins 


Visit US at http://www.Weather.Gov/Juneau 


















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