Warm-summer humid continental climate
Climate Petersburg - Alaska
Annual high50ºF
Annual low37ºF
Precipitation109.23 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 36 | 26 | 11.48 | 22 |
| Feb | 38 | 27 | 7.36 | 16 |
| Mar | 42 | 30 | 8.45 | 17 |
| Apr | 49 | 34 | 6.04 | 1 |
| May | 56 | 40 | 5.92 | 0 |
| Jun | 62 | 46 | 4.94 | 0 |
| Jul | 64 | 49 | 5.21 | 0 |
| Aug | 63 | 48 | 7.20 | 0 |
| Sep | 57 | 44 | 13.65 | 0 |
| Oct | 49 | 38 | 15.71 | 1 |
| Nov | 40 | 31 | 12.22 | 9 |
| Dec | 36 | 27 | 11.05 | 11 |
- JanHigh 36ºFLow 26ºFPrecip 11.48 inch
- FebHigh 38ºFLow 27ºFPrecip 7.36 inch
- MarHigh 42ºFLow 30ºFPrecip 8.45 inch
- AprHigh 49ºFLow 34ºFPrecip 6.04 inch
- MayHigh 56ºFLow 40ºFPrecip 5.92 inch
- JunHigh 62ºFLow 46ºFPrecip 4.94 inch
- JulHigh 64ºFLow 49ºFPrecip 5.21 inch
- AugHigh 63ºFLow 48ºFPrecip 7.20 inch
- SepHigh 57ºFLow 44ºFPrecip 13.65 inch
- OctHigh 49ºFLow 38ºFPrecip 15.71 inch
- NovHigh 40ºFLow 31ºFPrecip 12.22 inch
- DecHigh 36ºFLow 27ºFPrecip 11.05 inch
Climate summary
What is the average weather in Petersburg, Alaska?
Petersburg experiences a humid continental climate, characterized by very wet conditions annually and significant winter snowfall. Summers are cool, while winters are cold and bring abundant snow. Precipitation is spread relatively evenly throughout the year, with a strong pattern of wetter fall months and drier summers.
Petersburg weather averages
Annual high50ºF
Annual low37ºF
Precipitation109.23 inch
Snowfall77 inch
Daily normals Petersburg - Alaska - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 34.0 | 27.1 | 0.35 | 0.35 | 0.60 | 0.60 |
| Jan 2 | 34.0 | 27.1 | 0.70 | 0.70 | 1.20 | 1.20 |
| Jan 3 | 34.0 | 27.0 | 1.05 | 1.05 | 1.70 | 1.70 |
| Jan 4 | 34.0 | 27.0 | 1.40 | 1.40 | 2.30 | 2.30 |
| Jan 5 | 34.0 | 27.0 | 1.75 | 1.75 | 2.90 | 2.90 |
| Jan 6 | 34.0 | 27.0 | 2.10 | 2.10 | 3.50 | 3.50 |
| Jan 7 | 34.0 | 27.0 | 2.45 | 2.45 | 4.00 | 4.00 |
| Jan 8 | 34.0 | 27.0 | 2.79 | 2.79 | 4.60 | 4.60 |
| Jan 9 | 34.0 | 27.0 | 3.14 | 3.14 | 5.20 | 5.20 |
| Jan 10 | 34.1 | 27.0 | 3.48 | 3.48 | 5.80 | 5.80 |
| Jan 11 | 34.1 | 27.0 | 3.83 | 3.83 | 6.50 | 6.50 |
| Jan 12 | 34.2 | 27.0 | 4.19 | 4.19 | 7.10 | 7.10 |
| Jan 13 | 34.2 | 27.1 | 4.56 | 4.56 | 7.70 | 7.70 |
| Jan 14 | 34.3 | 27.1 | 4.93 | 4.93 | 8.40 | 8.40 |
| Jan 15 | 34.4 | 27.1 | 5.31 | 5.31 | 9.10 | 9.10 |
| Jan 16 | 34.4 | 27.1 | 5.69 | 5.69 | 9.80 | 9.80 |
| Jan 17 | 34.5 | 27.2 | 6.07 | 6.07 | 10.50 | 10.50 |
| Jan 18 | 34.6 | 27.2 | 6.44 | 6.44 | 11.20 | 11.20 |
| Jan 19 | 34.7 | 27.2 | 6.82 | 6.82 | 11.90 | 11.90 |
| Jan 20 | 34.8 | 27.3 | 7.20 | 7.20 | 12.60 | 12.60 |
| Jan 21 | 34.9 | 27.3 | 7.58 | 7.58 | 13.30 | 13.30 |
| Jan 22 | 34.9 | 27.3 | 7.96 | 7.96 | 14.00 | 14.00 |
| Jan 23 | 35.0 | 27.4 | 8.34 | 8.34 | 14.70 | 14.70 |
| Jan 24 | 35.1 | 27.4 | 8.73 | 8.73 | 15.50 | 15.50 |
| Jan 25 | 35.2 | 27.4 | 9.11 | 9.11 | 16.20 | 16.20 |
| Jan 26 | 35.3 | 27.4 | 9.49 | 9.49 | 16.90 | 16.90 |
| Jan 27 | 35.4 | 27.5 | 9.87 | 9.87 | 17.60 | 17.60 |
| Jan 28 | 35.5 | 27.5 | 10.25 | 10.25 | 18.40 | 18.40 |
| Jan 29 | 35.6 | 27.5 | 10.63 | 10.63 | 19.20 | 19.20 |
| Jan 30 | 35.7 | 27.5 | 11.01 | 11.01 | 19.90 | 19.90 |
| Jan 31 | 35.8 | 27.5 | 11.39 | 11.39 | 20.70 | 20.70 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Petersburg - October 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Oct 1 | 50.0 | 46.0 | 0.42 |
| Oct 2 | – | – | – |
| Oct 3 | 52.0 | 46.9 | 0.41 |
| Oct 4 | – | – | – |
| Oct 5 | – | – | – |
| Oct 6 | – | – | – |
| Oct 7 | – | – | – |
| Oct 8 | 52.0 | 43.0 | 0.72 |
| Oct 9 | 51.1 | 39.0 | 0.00 |
| Oct 10 | 48.9 | 33.1 | 0.00 |
| Oct 11 | 46.0 | 30.9 | 0.38 |
| Oct 12 | 48.0 | 41.0 | 0.32 |
| Oct 13 | 43.0 | 39.9 | 0.25 |
| Oct 14 | 48.9 | 39.9 | 0.00 |
| Oct 15 | 55.9 | 46.9 | 2.75 |
| Oct 16 | 57.9 | 44.1 | 2.26 |
| Oct 17 | – | – | – |
| Oct 18 | 44.1 | 41.0 | 0.57 |
| Oct 19 | – | – | – |
| Oct 20 | – | – | – |
| Oct 21 | – | – | – |
| Oct 22 | 46.0 | 37.9 | 0.37 |
| Oct 23 | 45.0 | 32.0 | 0.00 |
| Oct 24 | 44.1 | 28.9 | 0.00 |
| Oct 25 | 42.1 | 28.0 | 0.00 |
| Oct 26 | 39.9 | 28.0 | T |
| Oct 27 | 48.0 | 37.0 | 0.10 |
| Oct 28 | 50.0 | 30.0 | 0.00 |
| Oct 29 | 42.1 | 27.0 | 0.00 |
| Oct 30 | 41.0 | 23.0 | 0.00 |
| Oct 31 | 46.9 | 26.1 | T |
The data for October 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature57.9ºF · Oct 16
- Lowest max temperature39.9ºF · Oct 26
- Highest min temperature46.9ºF · Oct 3
- Lowest min temperature23.0ºF · Oct 30
Geo Petersburg - Alaska
Location
- Country
- United States
- State
- Alaska
- County
- –
- City
- Petersburg
- Zip Code
- 99833
- Elevation
- 98 ft
- Longitude
- -132.96
- Latitude
- 56.81
- ICAO
- –
- IATA
- –