Juneau, Alaska Weather Conditions

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Current Conditions

  • 53°
  • Light Rain
  • Wind: East 8 mph
  • Humidity: 96%
  • Visibility: 10.0 miles
  • Dew Point: 52°
  • Pressure: 30.15 in. +

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Next 12 Hours

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4  am
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Rain
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Rain
Chance of Rain
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53°
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Rain
  • High: 59 °
  • Low: 52 °
  • Rain
  • Friday
  • Rain
  • High: 59 °
  • Low: 51 °
  • Rain
  • Saturday
  • Chance of Rain
  • High: 61 °
  • Low: 49 °
  • Chance of Rain
  • Sunday
  • Chance of Rain
  • High: 67 °
  • Low: 52 °
  • Chance of Rain
  • Monday
  • Clear
  • High: 71 °
  • Low: 56 °
  • Clear

Forecast for Juneau, Alaska

Updated: 4:02 PM AKDT on July 29, 2015

  • Tonight

    Numerous showers. Lows around 51. Southeast wind 10 mph early in the evening becoming light and variable...then becoming southeast 10 mph in the late evening and early morning increasing to 15 mph.

  • Thursday

    Scattered showers in the morning...then numerous showers in the afternoon. Highs around 61. Southeast wind 10 mph.

  • Thursday Night

    Showers. Lows around 51. Southeast wind 10 to 15 mph.

  • Friday

    Showers. Highs around 59. Southeast wind 15 mph.

  • Friday Night

    Mostly cloudy. Scattered showers. Lows around 51. Southeast wind 10 mph.

  • Saturday

    Mostly cloudy. Scattered showers. Highs around 65.

  • Saturday Night

    Mostly cloudy. Lows around 50.

  • Sunday

    Partly cloudy. Highs around 65.

  • Sunday Night and Monday

    Partly cloudy. Lows 50 to 55. Highs around 66.

  • Monday Night and Tuesday

    Partly cloudy. Lows 50 to 55. Highs around 66.

  • Tuesday Night

    Mostly cloudy. Lows around 52.

  • Wednesday

    Partly cloudy. Highs around 66.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Dimond Park, Juneau, AK

Updated: 9:52 PM AKDT

Temperature: 50.4 °F Dew Point: 47 °F Humidity: 89% Wind: Calm Pressure: 29.97 in Hourly Precipitation: - Graphs

Location: Brother Hood Bridge / Safeway, Juneau, AK

Updated: 9:54 PM AKDT

Temperature: 50.7 °F Dew Point: 50 °F Humidity: 98% Wind: NNW at 2.2 mph Pressure: 30.23 in Hourly Precipitation: - Graphs

Location: Mendenhall Valley, Juneau, AK

Updated: 10:01 PM AKDT

Temperature: 51.4 °F Dew Point: 50 °F Humidity: 95% Wind: North at - Pressure: 30.05 in Hourly Precipitation: - Graphs

Location: Auke Bay, Juneau, AK

Updated: 10:03 PM AKDT

Temperature: 52.1 °F Dew Point: 52 °F Humidity: 100% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Graphs

Location: West Juneau, Juneau, AK

Updated: 10:00 PM AKDT

Temperature: 53.4 °F Dew Point: 53 °F Humidity: 99% Wind: Calm Pressure: 30.14 in Hourly Precipitation: 0.00 in Graphs

Location: Blueberry Hills, Juneau, AK

Updated: 9:56 PM AKDT

Temperature: 51.5 °F Dew Point: 51 °F Humidity: 99% Wind: ESE at 3.0 mph Pressure: 30.17 in Hourly Precipitation: 0.04 in Graphs

Location: South Lena Point, Juneau, AK

Updated: 10:04 PM AKDT

Temperature: 53.8 °F Dew Point: 51 °F Humidity: 90% Wind: Calm Pressure: 31.09 in Hourly Precipitation: 0.00 in Graphs

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

Updated: 9:35 PM AKDT

Temperature: 52.7 °F Dew Point: 50 °F Humidity: 89% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Southeast Alaska forecast discussion 
National Weather Service Juneau Alaska 
515 am akdt Wednesday Jul 29 2015 


Short term...early morning water vapor satellite image shows 
broad upper level low over Alaska interior and the Yukon territory 
with a shortwave trough remains across the western and northern 
Gulf...maintaining a healthy jet stream heading toward Southeast 
Alaska. Infra red image reveals a weak ridge of high pressure 
builds over Southeast Alaska with continued moisture feeding from 
the Gulf waters under persisting onshore low to middle level flow. As 
the ridge builds...southerly pressure gradient remains tight 
enough to produce small craft level winds over northern Lynn Canal 
and 15 to 25 miles per hour winds across Skagway area. Extensive cloud cover 
and showers have kept overnight temperatures mostly in the lower 
to middle 50s. 


Models remain in fair agreement for the weak ridge of high 
pressure remains across Southeast Alaska through tonight. The 
ridge will weaken and move southeast late tonight or early 
Thursday morning as a developing low in the south central Gulf 
tracks northeastward into the eastern Gulf on Thursday. Refreshed 
the inherited forecast with the 06z run nam12 for its good 
initialization. 


With continued deep onshore flow...numerous showers will continue 
across the Panhandle today...then decreasing a little tonight as 
the weak ridge starts moving south. Southerly pressure gradient 
will consequently relax and the winds over the northern Inner 
Channels will drop below small craft level late this afternoon 
into early evening hours. Continued gloomy skies and showers will 
maintain diurnal temperature fluctuation in a minimal range. 
Expect daytime highs in the upper 50s to the lower 60s...and 
overnight lows in the lower 50s across the northern and central 
Panhandle to the middle 50s over the southern areas. 


Long term...seemingly endless string of July rainy days continues 
into the weekend (august) for most of the Panhandle. Culprit continues 
to be an elongated west-southwesterly jet that has set up over the southern 
Gulf and Panhandle. Dew points in the middle 50s and southeasterly 
flow continue on Thursday...creating widespread rains despite modest 
upper forcing. Latest model output delays the eventual drying 
trend until early next week and this agrees with the trend 
mentioned in the previous forecast package. 


For Thursday inherited grids served nicely as only minor updates were 
introduced with the new model thermodynamic updates. Upper wave 
entering the southern Panhandle serves to increase rain rates 
during the afternoon over the central and southern Panhandle. By 
Friday morning the wave has led to a weak closed low aloft on the 
forecasts over the northeastern Gulf. This could trigger the record- 
breaker for total July precipitation in Juneau as 0.1-0.2/hr continues 
there into Friday...only need an inch or so for the record as of 12z 
today. Meanwhile gradients at the surface remain very weak as only 
wind problems will likely be in northern Lynn Canal with 20kts 
late on Friday as well as similar wind speeds on Thursday over the far 
southern channels and adjacent outer waters on Thursday associated with 
the surface low associated with incoming upper wave. 


Chose showers as the initial Mode of precipitation over the northern 
Panhandle until Thursday night with the rest of the Panhandle in 
expanding stratiform forced by the upper wave. Then behind the 
wave showers again take over for the north on Friday, spreading to 
all areas by Friday night. Showers appear likely to continue in a 
scattered fashion through Saturday, most numerous over the south 
as offshore middle-level flow begins to take over the northern 
sections and spreads slowly southward on the north side of the 
upper trough. On days 5-6 (sun/sun pm) a chance of rain is 
included for most areas as residual troughing now hangs on over 
the Panhandle enough to prevent eliminating the possibility of 
rain at this point. This is a new development not in the 12z wpc 
guidance...it is the trend in the latest GFS/ec runs and have 
included it in the grids for day 5. Even a subtle error in the 
exact trough positioning could make the difference between wet and 
dry conditions for a large part of the Panhandle at that time. By 
the same token..assigned the Monday PM/Tuesday grids to near 0 probability of precipitation as 
models agree on the drying trend at that point. Did this because 
the model agreement is very strong at 6 days with the strong 
Aleutian low persisting with ridging to the east over the eastern 
Gulf and Panhandle. Out at even day 7 remarkable agreement between 
the 00z ec/06z GFS exists on this scenario. Worth noting that the 
southern Panhandle regions are a bit less certain of a dry early- 
week scenario as the troughing persists just south of the 
Panhandle until Tuesday morning on the GFS/ec updates...this feature 
is even a bit slower to exit the southern areas on the GFS. 




&& 


Ajk watches/warnings/advisories... 
public...none. 
Marine...Small Craft Advisory for pkz012. 


&& 


$$ 


Ahn/Wesley 


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




















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