Petersburg, Alaska Weather Conditions

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Current Conditions

  • 54°
  • Overcast
  • Wind: Calm
  • Humidity: 82%
  • Visibility: 10.0 miles
  • Dew Point: 48°
  • Pressure: 29.99 in. 0

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Next 12 Hours

4  am
7  am
10  am
1  pm
4  pm
Rain Showers
Rain Showers
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Chance of Rain
Chance of Rain
55°
54°
61°
68°
61°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Chance of Rain
  • High: 68 °
  • Low: 52 °
  • Chance of Rain
  • Wednesday
  • Partly Cloudy
  • High: 64 °
  • Low: 52 °
  • Partly Cloudy
  • Thursday
  • Chance of Rain
  • High: 61 °
  • Low: 52 °
  • Chance of Rain
  • Friday
  • Chance of Rain
  • High: 61 °
  • Low: 54 °
  • Chance of Rain
  • Saturday
  • Chance of Rain
  • High: 64 °
  • Low: 54 °
  • Chance of Rain

Forecast for Petersburg, Alaska

Updated: 1:00 AM AKDT on July 22, 2014

  • Tuesday

    Mostly cloudy with a chance of rain in the afternoon. High of 68F. Winds less than 5 mph. Chance of rain 20%.

  • Tuesday Night

    Overcast with a chance of rain. Low of 52F. Winds less than 5 mph. Chance of rain 40%.

  • Wednesday

    Mostly cloudy. High of 64F. Winds from the SSW at 5 to 10 mph.

  • Wednesday Night

    Overcast in the evening, then mostly cloudy with a chance of rain. Low of 52F. Winds less than 5 mph. Chance of rain 20%.

  • Thursday

    Overcast with a chance of rain. High of 61F. Winds less than 5 mph. Chance of rain 60%.

  • Thursday Night

    Overcast with a chance of rain. Low of 52F. Winds less than 5 mph. Chance of rain 70% with rainfall amounts near 0.3 in. possible.

  • Friday

    Overcast with a chance of rain. High of 61F. Winds from the East at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.5 in. possible.

  • Friday Night

    Overcast with a chance of rain. Low of 54F. Winds less than 5 mph. Chance of rain 70% with rainfall amounts near 0.4 in. possible.

  • Saturday

    Overcast with a chance of rain. High of 64F. Winds from the SE at 5 to 10 mph. Chance of rain 50%.

  • Saturday Night

    Partly cloudy with a chance of rain. Low of 54F. Winds less than 5 mph. Chance of rain 70% with rainfall amounts near 0.4 in. possible.

  • Sunday

    Mostly cloudy with a chance of rain. High of 64F. Winds less than 5 mph. Chance of rain 70% with rainfall amounts near 0.3 in. possible.

  • Sunday Night

    Overcast with a chance of rain. Low of 52F. Winds less than 5 mph. Chance of rain 70% with rainfall amounts near 0.6 in. possible.

  • Monday

    Partly cloudy with a chance of rain. High of 66F. Winds less than 5 mph. Chance of rain 60% with rainfall amounts near 0.3 in. possible.

  • Monday Night

    Partly cloudy with a chance of rain. Low of 52F. Winds less than 5 mph. Chance of rain 60% with rainfall amounts near 0.2 in. possible.

  • Tuesday

    Mostly cloudy with a chance of rain. High of 64F. Winds less than 5 mph. Chance of rain 60%.

  • Tuesday Night

    Mostly cloudy with a chance of a thunderstorm. Low of 52F. Winds less than 5 mph. Chance of rain 40%.

  • Wednesday

    Mostly cloudy with a chance of a thunderstorm. High of 63F. Winds less than 5 mph. Chance of rain 20%.

  • Wednesday Night

    Partly cloudy with a chance of a thunderstorm. Low of 48F. Winds less than 5 mph. Chance of rain 20%.

  • Thursday

    Partly cloudy. High of 63F. Winds less than 5 mph.

  • Thursday Night

    Partly cloudy. Low of 48F. Winds less than 5 mph.

  • Friday

    Clear. High of 63F. Winds less than 5 mph.

  • Friday Night

    Clear. Low of 48F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: RAWS KAKE AK US, Kake, AK

Updated: 1:55 AM AKDT

Temperature: 54 °F Dew Point: 50 °F Humidity: 86% Wind: NNE at 2 mph Pressure: - Hourly Precipitation: 0.00 in Graphs

Location: Papke's Landing, Petersburg, AK

Updated: 3:15 AM AKDT

Temperature: 52.9 °F Dew Point: 53 °F Humidity: 99% Wind: Calm Pressure: 30.07 in Hourly Precipitation: - Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Southeast Alaska forecast discussion 
National Weather Service Juneau Alaska 
230 PM akdt Monday Jul 21 2014 


Short term...a weak, vertically stacked low lies just to the 
southwest of haida gwaii and is slowly moving to the southeast. 
Satellite imagery is showing several bands of clouds spiraling 
about the low and producing showers. Atmosphere is clearly 
convective and there are numerous thunderstorms occurring in 
British Columbia. Assessment of the forecast lifted index and 
modeled cape indicates there is very little risk of thunderstorms 
over Southeast Alaska, so have not included them in the afternoon 
forecast. Showers will continue to rotate over the region from 
Canada through the short term forecast period with the bulk it 
them over the southern half of the Panhandle. Farther north, 
offshore flow resulting from the circulation about the low to the 
south, a high over southwestern Yukon, and a building ridge over 
the central and northeast Gulf has cleared out skies nicely. 
Mostly clear skies over the northern half will allow overnight 
lows to drop down into the middle to lower 40s. Potential for 
radiational fog forming is high and has been included in the 
forecast. Mostly clear skies tomorrow will provide for some nice 
Summer weather with highs getting into the 70s in some places. To 
the south, mostly cloudy to cloudy conditions will continue 
tonight and fog will also be an issue but it will be more of an 
advection fog of very low marine stratus that settles down on the 
surface. Expect lows in the lower 50s tonight with highs in the 
middle to lower 60s tomorrow. 


Excellent model agreement through the short range. Used a blend 
of NAM, ECMWF, and Gem for updates to pressure and wind. Ensemble 
approach for pop using both low and high resolution NAM and 
European model (ecmwf). Quantitative precipitation forecast per river forecast center. Minor tweaks to high and 
low temperatures per GFS MOS. Forecast confidence is above average. 


Long term...models remain in general agreement in synoptic scale 
through late Thursday for the upper low near haida gwaii Tuesday 
night moves farther southeast to British Columbia coast and 
another upper level shortwave trough moves into the northern Gulf. 
In between these two features...upper ridge will build quickly 
over the Gulf and rapidly drifts southeast. Refreshed the 
inherited forecast package with the 00z European model (ecmwf) through Thursday 
evening for pressure and wind fields. 12z European model (ecmwf) was delayed due to 
power outage of their facility. The European model (ecmwf) has been the most 
consistent model over the past several days and probability of precipitation/quantitative precipitation forecast fields 
were updated with the 00z European model (ecmwf) as well for entire long term 
periods. A week long gloomy skies with wet weather is expected 
through early next week. 


Showers across the eastern Panhandle Tuesday night will continue 
to diminish through late Wednesday. Next frontal passage is 
expected to move in the eastern Gulf by Wednesday morning...then 
move onshore over the Panhandle by late Wednesday night into 
Thursday morning with likely to categorical probability of precipitation spreading over 
the Panhandle. Tightened southerly pressure gradient due to the 
ridge Wednesday will likely produce small craft level winds over 
northern Lynn Canal. Expect no significant winds/seas elsewhere. 


An Omega block will develop over the lower 48 and the upper 
level shortwave trough in the northern Gulf will deepen and a 
closed upper low will form over the north central Gulf by early 
Saturday morning...then drift south over the weekend before 
stalling in the southeastern Gulf by early next week. Model 
differences become larger on handling the synoptic pattern towards 
the weekend and used the new wpc ensemble solutions for pressure 
and wind fields from Friday through early next week. 


&& 


Aviation...impacts to aviation activities over northern 
portions of the Panhandle limited to radiational fog from late 
tonight through middle morning. To the south, areas of pannus (scud) 
with pockets of locally dense advection fog tonight vicinity 
Petersburg. Otherwise, mvmc or better. 


&& 


Ajk watches/warnings/advisories... 
public...none. 
Marine...Small Craft Advisory for pkz022. 


&& 


$$ 


Fritsch/ahn 



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