Juneau, Alaska Weather Conditions

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Current Conditions

  • 53°
  • Light Rain
  • Wind: ESE 30 mph
  • Humidity: 89%
  • Visibility: 6.0 miles
  • Dew Point: 50°
  • Pressure: 29.32 in. +

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Next 12 Hours

4  am
7  am
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1  pm
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52°
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Rain
  • High: 55 °
  • Low: 46 °
  • Rain
  • Saturday
  • Rain
  • High: 55 °
  • Low: 48 °
  • Rain
  • Sunday
  • Rain
  • High: 61 °
  • Low: 46 °
  • Rain
  • Monday
  • Chance of Rain
  • High: 54 °
  • Low: 45 °
  • Chance of Rain
  • Tuesday
  • Mostly Cloudy
  • High: 54 °
  • Low: 43 °
  • Mostly Cloudy

Forecast for Juneau, Alaska

Updated: 1:00 AM AKDT on September 19, 2014

Strong wind from late tonight through late Friday morning...
  • Friday

    Overcast with rain. High of 55F. Winds from the South at 5 to 15 mph. Chance of rain 90% with rainfall amounts near 0.5 in. possible.

  • Friday Night

    Overcast with rain. Low of 46F. Winds from the SE at 5 to 10 mph shifting to the ENE after midnight. Chance of rain 80% with rainfall amounts near 0.6 in. possible.

  • Saturday

    Overcast with rain. High of 55F. Winds less than 5 mph. Chance of rain 100% with rainfall amounts near 0.8 in. possible.

  • Saturday Night

    Overcast with a chance of rain. Low of 48F. Winds less than 5 mph. Chance of rain 40% with rainfall amounts near 0.4 in. possible.

  • Sunday

    Overcast with rain, then a chance of rain in the afternoon. High of 61F. Winds from the ENE at 5 to 10 mph. Chance of rain 80% with rainfall amounts near 0.6 in. possible.

  • Sunday Night

    Overcast with a chance of rain. Low of 46F. Winds from the ESE at 5 to 15 mph. Chance of rain 70% with rainfall amounts near 0.5 in. possible.

  • Monday

    Overcast with a chance of rain in the morning, then partly cloudy with a chance of rain. High of 54F. Winds from the SSE at 5 to 10 mph. Chance of rain 50%.

  • Monday Night

    Partly cloudy with a chance of rain. Low of 45F. Winds less than 5 mph.

  • Tuesday

    Clear in the morning, then overcast. High of 54F. Winds less than 5 mph.

  • Tuesday Night

    Mostly cloudy. Low of 43F. Winds from the NNE at 5 to 10 mph.

  • Wednesday

    Overcast. High of 54F. Winds from the NNE at 5 to 10 mph.

  • Wednesday Night

    Overcast. Low of 43F. Winds from the NE at 5 to 10 mph.

  • Thursday

    Partly cloudy. High of 55F. Winds from the NNE at 5 to 10 mph.

  • Thursday Night

    Mostly cloudy. Low of 43F. Winds from the NE at 5 to 10 mph.

  • Friday

    Partly cloudy with a chance of rain. High of 55F. Winds less than 5 mph. Chance of rain 70% with rainfall amounts near 0.2 in. possible.

  • Friday Night

    Partly cloudy with a chance of rain. Low of 41F. Winds less than 5 mph. Chance of rain 20%.

  • Saturday

    Overcast with a chance of rain. High of 52F. Winds from the ESE at 5 to 10 mph. Chance of rain 40%.

  • Saturday Night

    Overcast with a chance of a thunderstorm. Fog overnight. Low of 41F. Winds from the ESE at 5 to 10 mph. Chance of rain 40%.

  • Sunday

    Mostly cloudy with a chance of a thunderstorm. High of 54F. Winds from the SE at 5 to 10 mph. Chance of rain 40%.

  • Sunday Night

    Mostly cloudy with a chance of a thunderstorm. Fog overnight. Low of 41F. Winds from the SE at 5 to 10 mph. Chance of rain 40%.

  • Monday

    Partly cloudy with a chance of a thunderstorm. High of 54F. Winds from the SE at 5 to 10 mph. Chance of rain 40%.

  • Monday Night

    Clear. Fog overnight. Low of 41F. Winds from the SE at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: MISC Lemon Creek (Juneau), AK FAA, Juneau, AK

Updated: 2:50 AM AKDT

Temperature: 54 °F Dew Point: 54 °F Humidity: 100% Wind: South at 4 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: AKDOT North Douglas Highway MP 4, Juneau, AK

Updated: 2:56 AM AKDT

Temperature: 52 °F Dew Point: 48 °F Humidity: 86% Wind: ESE at 13 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: MISC North Douglas Island (Juneau), AK FAA, Juneau, AK

Updated: 2:54 AM AKDT

Temperature: 53 °F Dew Point: 53 °F Humidity: 100% Wind: ESE at 10 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: MISC NWS Office, Juneau, AK FAA, Juneau, AK

Updated: 2:58 AM AKDT

Temperature: 53 °F Dew Point: 50 °F Humidity: 89% Wind: WSW at 7 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

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

Updated: 3:00 AM AKDT

Temperature: 52 °F Dew Point: 49 °F Humidity: 91% Wind: NE at 9 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Auke Bay, Juneau, AK

Updated: 3:49 AM AKDT

Temperature: 51.8 °F Dew Point: 52 °F Humidity: 99% Wind: SE at 1.0 mph Pressure: 29.28 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: West Juneau, Juneau, AK

Updated: 3:30 AM AKDT

Temperature: 52.4 °F Dew Point: 52 °F Humidity: 98% Wind: SSW at 2.0 mph Pressure: 29.37 in Hourly Precipitation: 0.18 in Windchill: - Graphs

Location: Blueberry Hills, Juneau, AK

Updated: 3:34 AM AKDT

Temperature: 50.1 °F Dew Point: 50 °F Humidity: 98% Wind: SE at 13.0 mph Pressure: 29.41 in Hourly Precipitation: 0.19 in Windchill: - Graphs

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

Updated: 2:58 AM AKDT

Temperature: 53 °F Dew Point: 51 °F Humidity: 90% Wind: SE at 14 mph Pressure: - Hourly Precipitation: 0.06 in Windchill: - Graphs

Location: South Lena Point, Juneau, AK

Updated: 3:49 AM AKDT

Temperature: 52.5 °F Dew Point: 50 °F Humidity: 93% Wind: Calm Pressure: 30.30 in Hourly Precipitation: 0.06 in Windchill: - Graphs

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

Updated: 2:43 AM AKDT

Temperature: 53 °F Dew Point: 49 °F Humidity: 89% Wind: East at 2 mph Pressure: - Hourly Precipitation: 0.18 in Windchill: - Graphs

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

Updated: 3:49 AM AKDT

Temperature: 53.3 °F Dew Point: 51 °F Humidity: 91% Wind: Calm Pressure: 28.97 in Hourly Precipitation: 0.10 in Windchill: - Graphs

Location: MARITIME , Auke Bay, AK

Updated: 12:00 AM AKDT

Temperature: 50 °F Dew Point: 47 °F Humidity: 88% Wind: SE at 21 mph Pressure: 29.26 in Hourly Precipitation: 0.00 in Windchill: 43 °F Graphs

Location: MARITIME , Kake, AK

Updated: 3:00 AM AKDT

Temperature: 54 °F Dew Point: 52 °F Humidity: 94% Wind: SE at 40 mph Pressure: 29.37 in Hourly Precipitation: 0.00 in Windchill: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Southeast Alaska forecast discussion 
National Weather Service Juneau Alaska 
349 PM akdt Thursday Sep 18 2014 


Short term...complex gale force low over the central Gulf will 
drift to the northern Gulf by late tonight. Main occluded front will 
move across the area this evening...followed by a second wrap 
occluded front pushing onshore tonight. This second wrap front 
should weaken and lift north through the northern Panhandle late tonight and 
Friday morning. Used blend of the 12z NAM and Gem as they had best 
handle on placement of the main features. 


Main forecast concerns are winds...precipitation potential/amounts...and 
potential for thunderstorms. Right now strongest winds are just ahead of 
the main occluded front and on S side of the second wrap front. 
Both areas have gale force winds. Main frontal wind band will 
diminish as it GOES inland this evening. Stronger winds with 
second wrap of front should hit the central coast beginning this 
evening...then move into the central and part of the northern Panhandle 
later tonight. Expect 35-40 knots winds with this band...and have 
gales/strong wind headlines with the band as it comes through. The 
winds should slowly diminish over much of the area Friday...but the 
far northern Panhandle will see strong winds by middle-morning Friday after 
second wrap front passes north of them and a strong southerly pressure gradient 
develops. Have gales/strong wind headlines for that area for much 
of the day Friday. 


As for precipitation...should be wet area wide. Precipitation character may go 
back and forth between showers and stratiform as the various 
frontal bands move through the area. Have decided to stay with 
stratiform for this forecast period for simplicity. Think heaviest 
rain will be associated with second wrap of front as strong SW flow 
will favor the northwest-southeast oriented mountain ranges that dominate the terrain 
of Southeast Alaska. Strongest SW flow will occur from the pasi-pajn 
area...so will mention heavy at times for those areas for at least 
part of the time tonight and Friday morning. Will need to watch some 
of the area streams and rivers for potential fast rises later 
tonight and Friday morning. Cannot rule out potential for minor 
flooding especially Friday morning in the Juneau area. 


As for thunderstorm potential GOES...500 mb temperatures are only around -20-22c 
in the cold pool. Like to see sea surface temperature-500 mb temperature diffs of 
40+c degrees for thunderstorms to occur...and the diff is in the 35-37c 
range based on current sea surface temperatures over the southeast Gulf. Think this 
will keep threat for thunderstorms on the low side at best. Models do show 
cape values in the 200-400 j/kg range as vorticity maximum moves onshore 
this evening just ahead of second wrap front...but think that is 
overdone as current convection over the southeast Gulf does not look too 
impressive. Still...system has some strength and a narrow band of 
deeper convection is possible just ahead of second wrap front. 
Will not mention any thunderstorms with this package but will let next 
shift know my concerns. 


Long term...active weather pattern continues through the 
weekend. Forecast confidence remains fairly low for the long term 
forecast period. 


For the start of the long term period on Friday night, a low 
will move in from the south. Right now, have gale force winds for 
marine zones 41, 42, and Clarence Strait. Wind gusts of 40 miles per hour are 
expected for Prince of Wales Island, Ketchikan, and Skagway areas. 
There will be a brief break, before another low comes into the 
Gulf from the subtropics for Sunday. This low should be capable to 
bring in gale force winds to the outer coast. The active pattern 
should quiet down a bit for next week. 


With predominantly strong southerly flow, did adjust 
temperatures upward for Saturday and Sunday. Do expect highs in 
the upper 50s to the low 60s for the weekend, and lows in the 
upper 40s to around 50 degrees. 


Rain will continue through the weekend. Do expect half an inch 
to an inch of rainfall per day. Streams and lakes in the area 
should see rising water levels, with some getting to action stage. 
It is tough to pinpoint areas that will experience heavy rain at 
this time, since models are still going back and forth on the 
storm track. 


Forecast confidence is below average through the long term 
period. Numerical models are struggling in the track and intensity 
of the Friday night low and the Saturday-Sunday low. These lows 
are originating from the subtropics, and they are barotropic in 
nature without much temperature gradients. When these lows move 
poleward and reach the Gulf of Alaska, they become increasingly 
baroclinic as there are sources of colder air on the back side of 
these systems. Because of the changing nature of these lows, 
models are having some difficulties in predicting the evolution of 
these systems. Gem is suggesting stronger lows, but Gem tends to 
have bias on bombing out systems. GFS/ECMWF/NAM all suggest lows 
moving up into the southern part of our cwa, but are much weaker. 
Right now, go with an ensemble of all available models. Forecast 
confidence is below average through end of next work week. 


&& 


Ajk watches/warnings/advisories... 
public...strong wind from 1 am akdt Friday through Friday morning for 
akz026. 
Strong wind until 4 PM akdt this afternoon for akz023-027. 
Strong wind from 1 am akdt Friday through Friday morning for 
akz024. 
Strong wind from 1 am akdt Friday through Friday afternoon for 
akz021-025. 
Strong wind from Friday morning through Friday afternoon for 
akz022. 
Strong wind from 7 PM akdt this evening through Friday morning 
for akz023. 
Strong wind until 10 PM akdt this evening for akz028. 
Strong wind from Friday morning through Friday evening for 
akz019. 
Strong wind from Friday morning through Friday evening for 
akz018. 
Marine...Gale Warning for pkz012-013-022-031>034-036-041>043-051-052. 
Small Craft Advisory for pkz011-021-035-053. 


&& 


$$ 


Rwt/rcl 


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