Petersburg, Alaska Weather Conditions

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Current Conditions

  • 48°
  • Light Rain Showers
  • Wind: NE 5 mph
  • Humidity: 66%
  • Visibility: 10.0 miles
  • Dew Point: 37°
  • Pressure: 29.75 in. -

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Next 12 Hours

4  pm
7  pm
10  pm
1  am
4  am
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Clear
Clear
Partly Cloudy
Partly Cloudy
Clear
Clear
52°
50°
39°
30°
32°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Chance of Rain
  • High: 52 °
  • Low: 30 °
  • Chance of Rain
  • Thursday
  • Clear
  • High: 52 °
  • Low: 34 °
  • Clear
  • Friday
  • Partly Cloudy
  • High: 55 °
  • Low: 37 °
  • Partly Cloudy
  • Saturday
  • Chance of Rain
  • High: 52 °
  • Low: 37 °
  • Chance of Rain
  • Sunday
  • Chance of Rain
  • High: 52 °
  • Low: 36 °
  • Chance of Rain

Forecast for Petersburg, Alaska

Updated: 7:00 AM AKDT on April 23, 2014

  • Wednesday

    Partly cloudy with a chance of rain in the afternoon. High of 52F. Winds less than 5 mph. Chance of rain 30%.

  • Wednesday Night

    Partly cloudy with a chance of rain. Low of 30F. Winds less than 5 mph.

  • Thursday

    Clear. High of 52F. Winds less than 5 mph.

  • Thursday Night

    Clear in the evening, then partly cloudy. Low of 34F. Winds less than 5 mph.

  • Friday

    Mostly cloudy. High of 55F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy with a chance of rain. Low of 37F. Winds less than 5 mph. Chance of rain 60%.

  • Saturday

    Overcast with a chance of rain. High of 52F. Winds from the ESE at 5 to 10 mph. Chance of rain 50%.

  • Saturday Night

    Overcast with a chance of rain. Low of 37F. Winds from the ESE at 5 to 10 mph. Chance of rain 50% with rainfall amounts near 0.2 in. possible.

  • Sunday

    Overcast with a chance of rain. High of 52F. Winds from the SSE at 5 to 10 mph. Chance of rain 50%.

  • Sunday Night

    Partly cloudy with a chance of rain. Low of 36F. Winds less than 5 mph. Chance of rain 40%.

  • Monday

    Partly cloudy. High of 54F. Winds from the ESE at 5 to 10 mph.

  • Monday Night

    Partly cloudy with a chance of rain. Low of 37F. Winds from the East at 5 to 10 mph. Chance of rain 40% with rainfall amounts near 0.2 in. possible.

  • Tuesday

    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.

  • Tuesday Night

    Mostly cloudy with a chance of rain. Low of 36F. Winds less than 5 mph. Chance of rain 50%.

  • Wednesday

    Clear with a chance of rain. High of 57F. Winds less than 5 mph. Chance of rain 20%.

  • Wednesday Night

    Clear. Low of 32F. Winds less than 5 mph.

  • Thursday

    Partly cloudy. High of 55F. Winds less than 5 mph.

  • Thursday Night

    Clear. Low of 36F. Winds less than 5 mph.

  • Friday

    Clear. High of 55F. Winds from the SE at 5 to 10 mph.

  • Friday Night

    Clear. Low of 36F. Winds less than 5 mph.

  • Saturday

    Clear. High of 54F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 34F. Winds less than 5 mph.

  • Sunday

    Clear. High of 54F. 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 PM AKDT

Temperature: 48 °F Dew Point: 40 °F Humidity: 75% Wind: SSW at 5 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 46 °F Graphs

Location: Papke's Landing, Petersburg, AK

Updated: 2:21 PM AKDT

Temperature: 49.3 °F Dew Point: 38 °F Humidity: 66% Wind: SW at 3.7 mph Pressure: 29.83 in Hourly Precipitation: - Windchill: 48 °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 
520 am akdt Wednesday Apr 23 2014 


Short term...upper trough over southern Southeast Alaska will drift north into the 
Central Area tonight. Vorticity maximum over the northern Panhandle will drift 
west-northwest into the NE Gulf by late this afternoon. Surface low over northern Southeast 
Alaska will reach the far NE Gulf by late this afternoon. Inverted 
trough will develop northwest into the southern Panhandle tonight. Used mainly 
the 00z European model (ecmwf) as it had best handle on these features. 


Main forecast issues will be precipitation potential/character and how 
quickly any clearing will occur. Right now with shortwave over the 
northern Panhandle...broken area of precipitation is occurring from pagn northward 
to pahn. Think this area of precipitation will shift west-northwest with the 
shortwave with a diminishing trend from the east-southeast later this 
afternoon and tonight. Think some precipitation will reach the paya area 
by late this afternoon or early this evening as vorticity maximum moves 
into that area. Model soundings show a weak frontal layer in the 
middle-levels over the northern half of the area...so went with periods of 
rain there. Will probably transition to scattered showers tonight but 
for now just indicated diminishing trend in steadier precipitation for 
simplicity. Over the S...with colder air aloft...think some 
showers will pop up with the daytime heating over and near the 
mountains...so generally going with isolated/scattered showers over the S...with 
the best threat in zone 26. These showers should diminish this 
evening with loss of daytime heating. 


As upper trough shifts northward and low level north-northwest flow increases with 
the developing inverted trough...think southern area will see decent 
amount of clearing especially tonight. There may be larger breaks 
in the clouds this afternoon over the far southern area however. This 
part of the forecast is tricky though due to some model 
uncertainty handling small scale features in low levels there. 


Otherwise...with fairly weak pressure gradients winds will be 
rather light...generally up to 15 knots. There are some local 
enhancements to the winds along the outer coast with weak tip jets 
there but this will weaken today. A system currently well to the 
SW of the area will send in increasing southwesterly swells into the eastern 
Gulf through tonight...but currently expect them to remain below Small Craft Advisory 
levels for the Gulf coastal waters. 


&& 


Long term...a compact midlevel shortwave trough will be the 
primary weather maker at the start of the long term period. This 
feature will be located over the northern County Warning Area Thursday afternoon...and then 
depart northward into the Yukon territory by Friday morning. The upper 
disturbance will yield cloudy skies and showers for northern 
areas...while skies are expected to begin clearing over the southern 
Panhandle. Afternoon sunshine combined with warming 850 mb 
temperatures should aid in boosting Thursday highs into the middle to 
upper 50s from roughly Juneau southward. Dry midlevel air will then 
spread northward into the central/northern Panhandle on Friday. This will support 
pleasant afternoon conditions...with temperatures in the low to 
middle 50s...and a weak pressure gradient resulting in light winds. 
The light pressure gradient and mild temperatures may also support 
sea breeze development for locations such as 
Juneau...Haines/Skagway...and Gustavus. 


Meanwhile...a weak upper disturbance located near coastal b.C. Will 
be entrained northward into a broad area of troughing occurring over the 
western/central Gulf Friday night. This will Herald the return of clouds and 
precipitation for Southeast Alaska beginning this weekend through the 
remainder of the long term period. In addition...surface low 
pressure will deepen over the Gulf...which will lead to a 
tightening gradient over the outer waters by Sat...increasing 
east-southeasterly winds...and building seas. 


The 00z/23 model guidance was in general agreement through the 
weekend...with forecast confidence above average. Model spread 
then increases with the evolution of the Gulf cyclone Monday through 
Wednesday...and forecast confidence subsequently decreases. Minor 
adjustments to pressure/winds /using 00z European model (ecmwf) blended in with 
previous forecast/...temperatures...and pop/quantitative precipitation forecast were made through 
sun...with very little change introduced to the forecast for Monday 
and beyond. 


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


&& 


$$ 


Rwt/Garner 



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