What is the hottest month in St. Paul?

August is the warmest month in St. Paul, with an average high of 53.0°F.

What is the coldest month in St. Paul?

March is the coldest month in St. Paul, with an average low of 20.8°F.

What month does St. Paul get the most rain?

October is typically the wettest month in St. Paul, with about 3.32 inches of precipitation.

What plant hardiness zone is St. Paul in?

St. Paul is approximately in USDA plant hardiness Zone 7b, based on the average annual extreme minimum temperature.

Has the climate in St. Paul changed recently?

22.1% of St. Paul's all-time daily heat records were set in the last decade (since 2015), compared to roughly 5% if records were evenly distributed over time.

St. Paul, AK

Climate overview — based on NOAA 1991-2020 normals from ST PAUL ISLAND AP, AK US.

ET Tundra climate 7b USDA hardiness Zone 7b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

St. Paul has an annual average temperature of 35.9°F with about 24.3 inches of precipitation per year and 64.3 inches of snow. The warmest month is August (average high 53.0°F), and the coldest is March (average low 20.8°F). October is typically the wettest month (3.32 in) and May the driest (1.02 in). Snow typically falls from October through May.

Annual swing

24.4°F

warmest to coldest month

Heating need

10,464

HDD/yr

Cooling need

CDD/yr

Best time to visit St. Paul

Full guide →

Climate change signal

All-time records →

81 of 366 (22.1%) of St. Paul's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.

1910s		37
1920s		36
1930s		54
1940s		19
1950s		10
1960s		12
1970s		42
1980s		29
1990s		22
2000s		11
2010s		70
2020s		24

Bars: number of all-time daily heat records still standing that were set in each decade.

Monthly averages

Month	Avg High	Avg Low	Avg Temp	Precipitation	Snow	Rainy days
January	29.2°F	21.4°F	25.3°F	1.61 in	16.5 in	17
February	29.4°F	21.2°F	25.3°F	1.43 in	11.1 in	16
March	29.5°F	20.8°F	25.1°F	1.29 in	9.6 in	14
April	34.1°F	26.1°F	30.1°F	1.04 in	5.3 in	12
May	40.8°F	32.4°F	36.6°F	1.02 in	0.8 in	12
June	47.5°F	38.7°F	43.1°F	1.31 in	—	11
July	51.6°F	44.2°F	47.9°F	1.98 in	—	14
August	53.0°F	46.1°F	49.5°F	3.06 in	—	18
September	50.1°F	41.9°F	46.0°F	3.00 in	—	20
October	43.6°F	35.3°F	39.5°F	3.32 in	1.6 in	23
November	37.7°F	30.1°F	33.9°F	2.97 in	7.1 in	23
December	33.1°F	24.7°F	28.9°F	2.30 in	12.3 in	22