Petersburg, Alaska Weather Conditions

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Current Conditions

  • 37°
  • Overcast
  • Wind: ESE 5 mph
  • Humidity: 93%
  • Visibility: 10.0 miles
  • Dew Point: 36°
  • Pressure: 29.60 in. +
  • Heat Index: 34

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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
Overcast
Overcast
Overcast
Overcast
Chance of Rain
Chance of Rain
37°
34°
39°
43°
41°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Rain
  • High: 43 °
  • Low: 37 °
  • Rain
  • Saturday
  • Rain
  • High: 45 °
  • Low: 39 °
  • Rain
  • Sunday
  • Overcast
  • High: 48 °
  • Low: 39 °
  • Overcast
  • Monday
  • Chance of Rain
  • High: 45 °
  • Low: 37 °
  • Chance of Rain
  • Tuesday
  • Chance of Rain
  • High: 46 °
  • Low: 39 °
  • Chance of Rain

Forecast for Petersburg, Alaska

Updated: 1:00 AM AKDT on October 31, 2014

  • Friday

    Overcast in the morning, then mostly cloudy with a chance of rain. High of 43F. Winds from the ESE at 5 to 10 mph. Chance of rain 30%.

  • Friday Night

    Overcast with rain. Low of 37F. Winds from the ESE at 5 to 10 mph. Chance of rain 80% with rainfall amounts near 0.4 in. possible.

  • Saturday

    Overcast with rain. High of 45F. Winds from the ESE at 5 to 10 mph. Chance of rain 90% with rainfall amounts near 0.4 in. possible.

  • Saturday Night

    Overcast with a chance of rain. Low of 39F. Winds from the ESE at 5 to 10 mph. Chance of rain 80% with rainfall amounts near 0.4 in. possible.

  • Sunday

    Overcast with a chance of rain. High of 48F. Winds from the SE at 5 to 10 mph.

  • Sunday Night

    Overcast with a chance of rain. Low of 39F. Winds from the ESE at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.6 in. possible.

  • Monday

    Overcast with a chance of rain. High of 45F. Winds less than 5 mph. Chance of rain 20%.

  • Monday Night

    Overcast with a chance of rain. Low of 37F. Winds less than 5 mph. Chance of rain 20%.

  • Tuesday

    Overcast with a chance of rain. High of 46F. Winds from the ESE at 5 to 10 mph. Chance of rain 20%.

  • Tuesday Night

    Overcast with a chance of rain. Low of 39F. Winds from the ESE at 5 to 10 mph. Chance of rain 20%.

  • Wednesday

    Mostly cloudy with a chance of rain. High of 46F. Winds less than 5 mph. Chance of rain 20%.

  • Wednesday Night

    Partly cloudy. Low of 32F. Winds from the ENE at 5 to 10 mph.

  • Thursday

    Overcast with a chance of rain. High of 41F. Winds from the NE at 5 to 15 mph. Chance of rain 50%.

  • Thursday Night

    Overcast with a chance of rain. Low of 36F. 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 43F. Winds from the East at 5 to 10 mph. Chance of rain 40%.

  • Friday Night

    Mostly cloudy with a chance of rain. Low of 36F. Winds from the ESE at 5 to 10 mph. Chance of rain 40%.

  • Saturday

    Partly cloudy with a chance of rain. High of 41F. Winds from the East at 5 to 10 mph. Chance of rain 40%.

  • Saturday Night

    Mostly cloudy with a chance of rain. Low of 30F. Winds from the East at 5 to 10 mph. Chance of rain 20%.

  • Sunday

    Partly cloudy. Fog early. High of 37F with a windchill as low as 28F. Winds from the East at 5 to 10 mph.

  • Sunday Night

    Mostly cloudy with a chance of rain. Low of 30F with a windchill as low as 23F. Winds from the South at 5 to 10 mph shifting to the East after midnight. Chance of rain 30%.

  • Monday

    Partly cloudy with a chance of rain. High of 41F. Winds from the ESE at 5 to 10 mph. Chance of rain 50%.

  • Monday Night

    Clear. Fog overnight. Low of 30F. Winds from the ESE at 5 to 10 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: RAWS KAKE AK US, Kake, AK

Updated: 3:55 AM AKDT

Temperature: 38 °F Dew Point: 38 °F Humidity: 100% Wind: North at 7 mph Pressure: - Hourly Precipitation: 0.01 in Windchill: 33 °F Graphs

Location: Papke's Landing, Petersburg, AK

Updated: 4:35 AM AKDT

Temperature: 37.9 °F Dew Point: 38 °F Humidity: 99% Wind: Calm Pressure: 29.69 in Hourly Precipitation: - Windchill: 38 °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 
345 PM akdt Thursday Oct 30 2014 


Short term...satellite imagery this afternoon showing a weakening low 
pressure system moving into the northern Alaska Gulf with a secondary 
circulation over haida gwaii. The northern Alaska Gulf low produced 
gale force winds over night with some lingering small craft winds 
over pkz51 and 52. This low will linger over the northeastern Gulf 
through Friday when it eventually weakens to an open wave trough. 
Winds around the low will continue to diminish through the late 
evening. The haida gwaii low was tricky to forecast as many models 
were not showing this feature and were in consensus that the low 
would show little development with remnants moving eastward into 
British Columbia. In reality the low dropped down to 992 mb 
producing some 20 knots winds over pkz41, 25 knots over Clarence Strait 
and a brief period of strong winds over zone 28. Now expect the 
low to move along an northeast track increasing winds over zone 26 
this evening then moving into British Columbia. Northwesterly winds 
are dropping off rapidly becoming calm as the low moves overland 
then will shift to the south and pick back up on the back side of 
the low. 


As both lows track in opposite directions the current frontal 
band over the Panhandle that is producing moderate to heavy rainfall 
will also split. Southern Panhandle precipitation will diminish and 
change to showers bit faster than the northern and central regions 
which will have a secondary wrap around the northern Gulf low 
tonight. Cooler air aloft will have the entire region under a 
convective environment by Friday. While this cooler air mass is 
more conducive for thunder storm activity over the Alaska Gulf and 
central Panhandle coast with cape in around 300 j/kg and lifted 
index near -1c not expecting temperatures to be low enough for snow. The 
exception again is at higher elevations and some cold pools 
northwest of Haines. For Friday afternoon a front extending from a 
low moving into the Bering Sea will begin to cross the Alaska Gulf. 
This front will mainly impact the region in the long term 
forecast. 


Models had some differences with the position of the low in the 
northern Gulf but a general model blend stayed in line with the 
inherited grids. More spread with the low to the south with better 
initialization with the European model (ecmwf)/NAM, but all model missed the actual feature. 
Overall left grids to the north as is with nudge to the 12z 
NAM/European model (ecmwf) for winds over the Alaska Gulf and manual editing of winds 
over the southern Panhandle. Forecast confidence is below average. 


Long term...extended range forecast begins with a triple point 
low forming just east of Kodiak along a warm frontal boundary that 
extends east across the northern Gulf. Triple low itself does not 
look like it will last long, as what little upper level jet 
support it initially has will pull away to the south. The low 
rotates back to the west eventually becoming absorbed into the 
much larger parent circulation which, by Sunday night, will 
feature multiple middle level circulations and short waves. 


The front that extends east from the triple point low will begin to 
affect Southeast Alaska Saturday night as showers transition back 
to stratiform precipitation. Excellent agreement today between 
GFS, NAM, and European model (ecmwf) on the timing of this front and its movement 
across the Panhandle with moderate rain becoming heavy at times. 
A Post frontal short wave trough then moves in Saturday evening, 
followed by another on Sunday evening. 


Have a narrow band of gale force winds over the eastern Gulf in 
advance of the Saturday front on Friday night. At this point, if 
there are strong winds, it looks like they will be limited to the 
central and southern outer coast late Friday night into early 
Saturday. Small craft winds over several of the Inner Channels 
with a 40 knots gale being forecast for Clarence Strait. Winds will 
diminish through the afternoon Saturday and overnight. A 
low that will form well to the south and west will ride up along 
the existing cold frontal boundary and arrive over the far southeastern 
Gulf late Sunday night. Winds over the southern coastal marine 
zones and Inner Channels will pick up to 30 kts or so in the 
overnight hours on Sunday. Current forecast has this low 
retrograding back to the northwest as it occludes along the outer 
coast and weakens rapidly on Monday. 


Long term agreement better today and the early 
portion of the extended range forecast remains on track. No 
changes to pressure or wind through Saturday night. Updated Sunday 
and Sunday night with European model (ecmwf). Wpc thereafter. Updates to pop and 
quantitative precipitation forecast yielded little to no change through Sunday night. Forecast 
confidence upgraded to average. 


&& 


Ajk watches/warnings/advisories... 
public...none. 
Marine...Small Craft Advisory for pkz036-043-051. 
Small Craft Advisory due to seas for pkz041-042. 


&& 


$$ 


Prb/fritsch 


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



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