Petersburg, Alaska Weather Conditions

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Current Conditions

  • 54°
  • Overcast
  • Wind: Calm
  • Humidity: 94%
  • Visibility: 3.0 miles
  • Dew Point: 52°
  • Pressure: 29.96 in. -

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Next 12 Hours

7  am
10  am
1  pm
4  pm
7  pm
Rain
Rain
Rain
Rain
Rain
Rain
Rain
Rain
Rain
Rain
54°
55°
57°
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55°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Tuesday
  • Rain
  • High: 61 °
  • Low: 50 °
  • Rain
  • Wednesday
  • Chance of Rain
  • High: 63 °
  • Low: 48 °
  • Chance of Rain
  • Thursday
  • Partly Cloudy
  • High: 68 °
  • Low: 50 °
  • Partly Cloudy
  • Friday
  • Clear
  • High: 75 °
  • Low: 52 °
  • Clear
  • Saturday
  • Partly Cloudy
  • High: 75 °
  • Low: 52 °
  • Partly Cloudy

Forecast for Petersburg, Alaska

Updated: 7:00 AM AKDT on July 29, 2014

  • Tuesday

    Overcast with rain. High of 61F. Winds from the South at 5 to 15 mph. Chance of rain 80% with rainfall amounts near 0.6 in. possible.

  • Tuesday Night

    Overcast with rain in the evening, then mostly cloudy. Low of 50F. Winds less than 5 mph. Chance of rain 60%.

  • Wednesday

    Mostly cloudy with a chance of rain. High of 63F. Winds less than 5 mph. Chance of rain 60%.

  • Wednesday Night

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

  • Thursday

    Partly cloudy in the morning, then clear. High of 68F. Winds less than 5 mph.

  • Thursday Night

    Clear. Low of 50F. Winds less than 5 mph.

  • Friday

    Clear. High of 75F. Winds less than 5 mph.

  • Friday Night

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

  • Saturday

    Clear in the morning, then overcast. High of 75F. Winds less than 5 mph.

  • Saturday Night

    Partly cloudy. Low of 52F. Winds less than 5 mph.

  • Sunday

    Partly cloudy. High of 66F. Winds less than 5 mph.

  • Sunday Night

    Partly cloudy. Low of 54F. Winds less than 5 mph.

  • Monday

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

  • Monday Night

    Overcast with a chance of rain. Low of 54F. Winds from the ESE at 5 to 10 mph. Chance of rain 40%.

  • Tuesday

    Mostly cloudy with a chance of rain. High of 63F. Winds from the SSW at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.2 in. possible.

  • Tuesday Night

    Mostly cloudy with a chance of a thunderstorm. Low of 54F. Winds less than 5 mph. Chance of rain 40%.

  • Wednesday

    Mostly cloudy with a chance of a thunderstorm. High of 61F. Winds less than 5 mph. Chance of rain 40%.

  • Wednesday Night

    Mostly cloudy with a chance of a thunderstorm. Low of 52F. Winds less than 5 mph. Chance of rain 20%.

  • Thursday

    Mostly cloudy. High of 61F. Winds less than 5 mph.

  • Thursday Night

    Partly cloudy. Low of 52F. Winds less than 5 mph.

  • Friday

    Clear. High of 61F. Winds less than 5 mph.

  • Friday Night

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

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: RAWS KAKE AK US, Kake, AK

Updated: 5:55 AM AKDT

Temperature: 53 °F Dew Point: 53 °F Humidity: 100% Wind: Calm Pressure: - Hourly Precipitation: 0.01 in Graphs

Location: Papke's Landing, Petersburg, AK

Updated: 6:45 AM AKDT

Temperature: 54.3 °F Dew Point: 54 °F Humidity: 99% Wind: Calm Pressure: 30.02 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 
548 am akdt Tuesday Jul 29 2014 


Short term...blocking pattern remains in place with upper 
trough positioned over the Gulf...with a ridge extending 
northward into the Bering Sea and a Second Ridge located over 
western Canada. The second of two upper impulses rotating around 
the large scale trough will move over the Alaska Panhandle through 
the day bringing more precipitation to the region. As the 500 mb 
vorticity maximum tracks northward with middle level flow shifting from the 
southeast to southwest precipitation will begin to diminish this 
evening and overnight. Steadier stratiform rainfall switches to 
more convective shower activity as cold air from the south moves 
in aloft. Precipitable water values for the day still around 
1 inch with moderate rain fall possible at times. Surface low 
over haida gwaii can be seen on infrared satellite imagery this morning 
moving northward. This low will weaken through the day while a 
larger surface low over the eastern Alaska Gulf retrogrades westwards 
as a ridge of high pressure builds over the Panhandle. Winds for 
the southern Panhandle will decrease through the morning as the 
southerly push from the surface low moves northward. The central 
and northern region winds will shift to the south through the 
morning with increasing winds speeds as the pressure gradient 
from the building high strengthens. For now not expecting any 
small craft winds to develop but will see sustained winds in the 
15 to 20 knots range. However northern Lynn Canal is closest to 
having small craft potential this afternoon and evening. Daytime 
highs remaining in the upper 50s to low 60s due to precipitation and 
cloud cover. As precipitation diminishes overnight temperatures 
should be a few degrees cooler than previous nights, thus the 
development of fog late tonight. 


Bit more model spread for surface details due to the weakening 
features, but still good consensus for synoptic pattern. Kept with 
a blend of 00z European model (ecmwf)/Gem which resulted in only minor changes to 
wind speeds. Other fields seem to still be on track so little 
changes were made. Forecast confidence is average. 


Long term...pattern change in store for the extended forecast. The 
low in the Gulf that has been affecting our weather for the last 
week will retrograde SW into the North Pacific through the second 
half of the week. This will allow the numerous showers on Wednesday 
to become more scattered and taper off from south to north through 
Wednesday night. On Thursday weak high pressure will settle over the 
northern Gulf Coast/northern Panhandle as a thermal inverted trough 
pushes into the southern Panhandle. This will cause a weak northerly 
flow through the inside waters and fair weather into Saturday. 
Models have come into better agreement on these couple days of dry 
weather and the northerly flow should even allow for more sunshine. 
Have warmed high temperatures slightly but may need to be warmed 
even more if it is sunny...the southern Panhandle looks to be the 
most likely to see highs in the lower 70s. Weak northerly flow will 
cause sea breezes to develop in the afternoons which would damper 
those highs slightly. Strongest sea breezes would be in places that 
already have a northwesterly sea breeze like Ketchikan, Wrangell and Sitka. 


Saturday night into Sunday models start to have more spread. The 
European model (ecmwf) brings rain back to the region over the weekend while the 
GFS keeps US dry until the start of next week. Blending these two 
solutions resulted in a chance of rain over the second half of the 
weekend and less confidence in that part of the forecast. 
Otherwise models were in good agreement and forecast confidence is 
average. 


&& 


Aviation...variable ceilings and visibilities this morning from 
the shortwaves moving over the region will eventually become more 
stable with improving conditions through the day and overnight. 
Fog development late tonight could be significant if cloud cover 
dissipates more rapidly resulting in increased radiational 
cooling and more fog developing. 


&& 


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




$$ 


Prb/Ferrin 



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