St. Paul, MN Climate & Monthly Averages
The climate of St. Paul
A 31°C spread between its warmest and coolest months puts St. Paul among the more strongly seasonal places we cover. July averages 83°F (28°C) by day; January averages 24°F (-4°C), with nights at 9°F (-13°C).
Climate quick facts
- Hottest month: July - highs near 83°F (28°C)
- Coldest month: January - highs near 24°F (-4°C)
- Decade extremes (2015-2024): 98°F (37°C) high · -35°F (-37°C) low
- Wettest month: May (12 rainy days) · Sunniest: July (12.7 h sun/day)
- Climate type: humid continental
- Annual swing: 31°C between the average warmest and coolest month · day to night: 9°C
- Snow: about 22 days a year
- Months with freezing average lows: 5
- Average humidity: 70%
Temperatures through the year
January is the coolest month, with highs of 24°F (-4°C) and lows near 9°F (-13°C). July is the warm end of the year, averaging 83°F (28°C) by day and 64°F (18°C) overnight. The gridded 2015-2024 daily record for this location tops out at 98°F (37°C) and bottoms at -35°F (-37°C) - decade extremes, not all-time station records. Three of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is August through September.
Rain, sun and snow
Sunshine averages 8.6 hours a day over the year, peaking in July at 12.7 hours. Between the average July and the average January lie 31°C, a wider spread than almost anywhere else we cover. Overnight lows average at or below freezing for 5 months, November through March. May is the wettest month at 5.5 inches (138 mm) over 12 days; January is the driest.
How St. Paul compares
- St. Paul averages 47°F (8°C) across the year - cooler than all but 4% of the 3496 cities we track.
Ranked against every city in our dataset, each measured on the same ten-year window.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 24° | 9° | 5 | 1.0 in | 5.5 h/day | 77% |
| February | 28° | 9° | 6 | 1.2 in | 7.6 h/day | 72% |
| March | 43° | 24° | 8 | 2.2 in | 8.0 h/day | 66% |
| April | 54° | 35° | 11 | 3.4 in | 8.5 h/day | 65% |
| May | 69° | 49° | 12 | 5.5 in | 10.3 h/day | 64% |
| June | 80° | 61° | 10 | 4.6 in | 12.1 h/day | 65% |
| July | 83° | 64° | 10 | 4.2 in | 12.7 h/day | 70% |
| August | 80° | 63° | 11 | 4.8 in | 10.9 h/day | 72% |
| September | 74° | 58° | 9 | 3.6 in | 9.5 h/day | 71% |
| October | 58° | 43° | 9 | 3.6 in | 7.2 h/day | 69% |
| November | 43° | 29° | 8 | 2.1 in | 5.8 h/day | 71% |
| December | 30° | 16° | 8 | 1.9 in | 4.6 h/day | 77% |
St. Paul month by month
St. Paul weather in January
January brings highs around 24°F (-4°C), lows near 9°F (-13°C), about 5 wet days and roughly 4 snowy days - typically the coldest month and the driest month of the year in St. Paul.
St. Paul weather in February
February brings highs around 28°F (-2°C), lows near 9°F (-13°C), about 6 wet days and roughly 4 snowy days.
St. Paul weather in March
March brings highs around 43°F (6°C), lows near 24°F (-4°C), about 8 wet days and roughly 4 snowy days.
St. Paul weather in April
April brings highs around 54°F (12°C), lows near 35°F (2°C), about 11 wet days and roughly 2 snowy days.
St. Paul weather in May
May brings highs around 69°F (20°C), lows near 49°F (10°C), about 12 wet days - typically the wettest month of the year in St. Paul.
St. Paul weather in June
June brings highs around 80°F (26°C), lows near 61°F (16°C), about 10 wet days.
St. Paul weather in July
July brings highs around 83°F (28°C), lows near 64°F (18°C), about 10 wet days - typically the hottest month and the sunniest month of the year in St. Paul.
St. Paul weather in August
August brings highs around 80°F (26°C), lows near 63°F (17°C), about 11 wet days.
St. Paul weather in September
September brings highs around 74°F (23°C), lows near 58°F (14°C), about 9 wet days.
St. Paul weather in October
October brings highs around 58°F (14°C), lows near 43°F (6°C), about 9 wet days.
St. Paul weather in November
November brings highs around 43°F (6°C), lows near 29°F (-2°C), about 8 wet days and roughly 2 snowy days.
St. Paul weather in December
December brings highs around 30°F (-1°C), lows near 16°F (-9°C), about 8 wet days and roughly 5 snowy days.
Seasons in St. Paul
Spring (March through May)
Through spring, St. Paul runs cool rather than cold: 55°F (13°C) by day, 36°F (2°C) after dark, and rain falls on around 31 of the 90 days, plus about 6 snowy days.
Summer (June through August)
Summer in St. Paul is hot, with daytime highs averaging 81°F (27°C) and nights around 63°F (17°C); rain falls on around 32 of the 90 days. Daylight is generous - around 11.9 hours of sun a day.
Fall (September through November)
Through fall, St. Paul stays on the cool side of mild: 58°F (14°C) by day, 43°F (6°C) after dark, and expect showers on roughly 26 days across the season, plus about 3 snowy days.
Winter (December through February)
Winter in St. Paul runs to hard cold, with daytime highs averaging 27°F (-3°C) and nights around 12°F (-11°C); expect showers on roughly 19 days across the season, plus about 13 snowy days. Wind sharpens cold like this considerably; pair the forecast winds with the wind speed converter to judge exposed conditions.
Climate questions, answered
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Best time to visit St. Paul
Aim for June to September if you get the choice: these are the warmest and brightest weeks of the year, and highs average 79°F (26°C) against roughly 10 wet days a month. For the same question asked the other way round, see where else is warm in June.
Pack for St. Paul with light clothing for the warm months, a heavy insulated coat, hat and gloves for winter and a compact umbrella or rain shell. Even in July, lows of 64°F (18°C) make an extra layer worth the space.
St. Paul temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.