Petersburg, Alaska Weather Conditions

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Current Conditions

  • 52°
  • Overcast
  • Wind: ENE 12 mph
  • Humidity: 44%
  • Visibility: 10.0 miles
  • Dew Point: 30°
  • Pressure: 29.43 in. -

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Next 12 Hours

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10  pm
1  am
Chance of Rain
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Chance of Rain
  • High: 54 °
  • Low: 37 °
  • Chance of Rain
  • Sunday
  • Rain
  • High: 50 °
  • Low: 37 °
  • Rain
  • Monday
  • Chance of Rain
  • High: 48 °
  • Low: 32 °
  • Chance of Rain
  • Tuesday
  • Mostly Cloudy
  • High: 50 °
  • Low: 34 °
  • Mostly Cloudy
  • Wednesday
  • Chance of Rain
  • High: 54 °
  • Low: 34 °
  • Chance of Rain

Forecast for Petersburg, Alaska

Updated: 7:00 AM AKDT on April 19, 2014

  • Saturday

    Mostly cloudy in the morning, then overcast with a chance of rain. High of 54F. Breezy. Winds from the East at 10 to 20 mph with gusts to 30 mph. Chance of rain 30%.

  • Saturday Night

    Overcast with rain. Low of 37F. Winds from the East at 5 to 10 mph. Chance of rain 90% with rainfall amounts near 0.2 in. possible.

  • Sunday

    Overcast with a chance of rain. High of 50F. Winds from the East at 5 to 15 mph. Chance of rain 40%.

  • Sunday Night

    Overcast with rain. Low of 37F. Winds from the East at 10 to 15 mph. Chance of rain 80% with rainfall amounts near 0.3 in. possible.

  • Monday

    Overcast with a chance of rain in the morning, then partly cloudy. High of 48F. Winds less than 5 mph. Chance of rain 40%.

  • Monday Night

    Mostly cloudy in the evening, then clear. Low of 32F. Winds from the North at 5 to 10 mph.

  • Tuesday

    Partly cloudy in the morning, then overcast. High of 50F. Winds less than 5 mph.

  • Tuesday Night

    Partly cloudy. Low of 34F. Winds less than 5 mph.

  • Wednesday

    Mostly cloudy with a chance of rain in the afternoon. High of 54F. Winds less than 5 mph. Chance of rain 40%.

  • Wednesday Night

    Partly cloudy. Low of 34F. Winds less than 5 mph.

  • Thursday

    Mostly cloudy. High of 57F. Winds less than 5 mph.

  • Thursday Night

    Mostly cloudy with a chance of rain. Fog overnight. Low of 37F. Winds less than 5 mph. Chance of rain 40%.

  • Friday

    Partly cloudy with a chance of rain. High of 52F. Winds less than 5 mph. Chance of rain 40%.

  • Friday Night

    Partly cloudy. Fog overnight. Low of 30F. Winds less than 5 mph.

  • Saturday

    Partly cloudy with a chance of rain. High of 55F. Winds from the SE at 5 to 10 mph. Chance of rain 20%.

  • Saturday Night

    Partly cloudy. Fog overnight. Low of 32F. Winds less than 5 mph.

  • Sunday

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

  • Sunday Night

    Clear with a chance of snow. Low of 32F. Winds less than 5 mph. Chance of snow 20%.

  • Monday

    Partly cloudy with a chance of rain. High of 57F. Winds less than 5 mph. Chance of rain 40%.

  • Monday Night

    Partly cloudy with a chance of rain. Fog overnight. Low of 34F. Winds less than 5 mph. Chance of rain 20%.

  • Tuesday

    Mostly cloudy with a chance of rain. High of 57F. Winds less than 5 mph. Chance of rain 30%.

  • Tuesday Night

    Overcast with a chance of snow. Fog overnight. Low of 34F. Winds less than 5 mph. Chance of snow 50%.

  • Wednesday

    Clear. High of 59F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: RAWS KAKE AK US, Kake, AK

Updated: 12:55 PM AKDT

Temperature: 45 °F Dew Point: 35 °F Humidity: 68% Wind: SSE at 6 mph Pressure: - Hourly Precipitation: 0.00 in Windchill: 42 °F Graphs

NWS Forecaster Discussion




Southeast Alaska forecast discussion 
National Weather Service Juneau Alaska 
542 am akdt Sat Apr 19 2014 


Short term...rain has begun to spread into the southern 
Panhandle with higher clouds moving north from the big...but 
relatively slow moving gale force low edging northward into the 
eastern Gulf. Gale force winds are appearing in Dixon Entrance at 
buoy 145...in addition to Cape Decision climbing to gale force, 
although this probably an outlier for the area at this point. 
Boundary layer winds are rising in front of this storm, and even 
taking 30 percent of the magnitude of these off to translate at 
the surface, we still were left with gales at Clarence Strait and 
southern Chatham Strait. These winds have presented a forecast 
challenge the last few days...especially for Saturday. The 
orientation is not the greatest for strong winds, but then again, 
it is difficult to ignore the winds screaming a short ways aloft. 
Many of our Airport locations may not verify during this event, 
but some areas in zones 27 and 28 will have some good gusts from 
this setup. Metlakatla will get more wind than Ketchikan. 
Confidence grows for strong winds this evening as a frontal 
boundary crosses the southern Panhandle to move north into the 
central Panhandle. The gradient setup is better for southeast 
winds at the surface, and thus am more confident about gale for 
Clarence...and did add southern Inner Channels and Baranof Island 
for strong wind during this time period. Ketchikan will blow 
strongest this evening. Southerly winds will reach all the way 
into Lynn Canal by late tonight as the remnants of the front 
spread northward, but the effects/winds will be weaker to the 
north. 


As rain falls over the southern areas...the northern zones will 
see some higher clouds today. Models are determining higher 
clouds spreading northward, but feel that in the Juneau/Gustavus 
area and possibly points further south, people outside will 
experience some varying amounts of sunshine, so worded things 
optimistically as partly sunny. Rain will hold off north of 
Frederick Sound until tonight with the rain spreading into 
Juneau/Gustavus area late tonight. Did decide to word the rain as 
light from Juneau northward...as the low positioning in the Gulf 
will be hard pressed to deliver a big soaker of any sort. Could 
see it being periods of sprinkles. 


European model (ecmwf) continues to perform well with the system. Did lend a 
little help from the Gem for pops/qpf. Forecast confidence on the 
good side of average. 


Long term...upper low over the NE Pacific and southern Gulf will shift 
eastward and weaken through early next week. Weak upper high will develop 
over interior Alaska by early next week. Weak upper trough will drift 
northward into the southern area by midweek. At the surface...a fairly large low 
will be heading southeast out of the Gulf Sun night. A smaller low looks 
like it will move north into the southeast Gulf Sun night then curve westward into 
the northern Gulf and weaken Monday. A weak surface ridge will develop over 
the eastern Gulf and northern Southeast Alaska by late Monday. Used the 00z European model (ecmwf) from 
sun through Monday night...then transitioned to latest wpc by Tuesday night. 


For sun-Sun night...tail end of a weakening occluded front will 
move north through the northern area Sun morning. This front will have some 
precipitation with it although the areas closer to the Coast Mountains will 
see less precipitation due to Ely flow. This precipitation should diminish Sun 
afternoon. More precipitation should reach the southern area later Sun 
morning and early afternoon as a low moves north toward the southeast Gulf. 
This system may also bring another round of strong winds to the 
southern Panhandle Sun afternoon and night as well as 30-35 knots winds 
for the southeast Gulf and southern inner channel marine areas. 
However...given the small size of the system...these winds will 
not last more than a few hours in most places. 


For Monday and Monday night...small low curves into the northern Gulf...and 
precipitation should diminish over much of the main part of the 
Panhandle Monday. May begin to see some clearing over the area Monday 
night as weak ridge builds over the area. 


For Tuesday on out...Southeast Alaska will generally be in between systems to 
the southeast and west of the area. May see minor precipitation threats for the 
southern area during this time due to proximity of a weak system to 
their southeast. The northern area will likely see a decent amount of 
sunshine Tuesday. Have allowed more clouds to move in from the S Tuesday 
night and Wednesday as weak upper trough moves in...but this may be 
overdone as there may be little low level reflection with it. A 
system may try to move up from the S for late week but models are 
in poor agreement by this time. Kept highest probability of precipitation over the S for 
late week but limited to high chance levels. 


Ajk watches/warnings/advisories... 
public...strong wind from 1 PM akdt this afternoon through late tonight 
for akz027. 
Strong wind from this evening through late tonight for akz023- 
028. 
Marine...Gale Warning for pkz033-036-041>043-051. 
Small Craft Advisory for pkz012-013-021-022-032-034-035-052. 


&& 


$$ 


Jwa/rwt 



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