St. Paul, Minnesota Weather
Prairie lightning bugs rise. Day 77 of spring. Read this microseason across nine climate regions →
St. Paul weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Rain52%0.28″85°66°—
- FridayJun 5Overcast40%—84°65°-1°
- SaturdayJun 6Clear32%—83°63°-1°
- SundayJun 7Overcast17%—85°62°+2°
- MondayJun 8Heavy Showers59%0.48″77°65°-8°
- TuesdayJun 9Light Drizzle39%0.01″78°67°+1°
- WednesdayJun 10Mostly Clear23%—91°67°+13°
PM scrubbed by 3 hours of recent rain — PM2.5 down to 7.4 µg/m³, PM10 to 8.1 µg/m³. AQI down 21 over the last 6 hours — air quality is improving sharply.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 40. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 40
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 9
PM × Wind × Precip
PM scrubbed by 3 hours of recent rain — PM2.5 down to 7.4 µg/m³, PM10 to 8.1 µg/m³.
- PM2.5/PM10
- 0.91
- Wind
- light
- Recent rain
- 3h in last 6h
- Pattern
- washed out
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 4:59 AM
- Moonset
- 1:58 PM
- In sign
- ♑︎ Capricorn
Prairie lightning bugs rise
St. Paul at a glance
- Today vs. normal: 5°F below the seasonal normal for this latitude
- Last frost: May 16 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — St. Paul
SPC has placed St. Paul in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWMRGLMarginal Risk
- DAY 3NONENo severe risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | — | — |
| May | lettuce, peas, spinach, radishes | lettuce, peas, radishes |
| June | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | tomatoes, peppers, beans, squash, fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | — | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
July brings St. Paul's warmest temperatures at around 73°F mean, while January delivers the coldest at approximately 16°F. June sees peak rainfall at 4.6 inches, compared to January's minimal 0.5 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 16° | 0.5″ | 1 |
| February | 21° | 0.5″ | 1 |
| March | 33° | 1.4″ | 4 |
| April | 47° | 2.6″ | 6 |
| May | 59° | 4.0″ | 8 |
| June | 69° | 4.6″ | 8 |
| July | 73° | 4.0″ | 6 |
| August | 71° | 4.1″ | 6 |
| September | 63° | 3.1″ | 5 |
| October | 49° | 2.5″ | 5 |
| November | 35° | 1.3″ | 3 |
| December | 22° | 0.7″ | 2 |
Regional context
The city falls within a warm-summer humid continental climate region, sharing similar temperature ranges, seasonal patterns, and growing conditions with nearby cities in this climate zone.
Similar climates: Minneapolis, MN, Rochester, MN, Duluth, MN, St. Cloud, MN, Bloomington, MN.
Naturalist notes
Late May brings the first blooms of common lilac throughout St. Paul's neighborhoods.
American robins typically begin their second nesting cycle during early June as daylight reaches its annual peak.
Frequently asked
- When does it freeze in St. Paul?
- The last spring frost typically occurs around mid-May, while the first fall frost arrives around mid-October.
- What is the rainy season in St. Paul?
- June receives the most rainfall at approximately 4.6 inches on average, with the city getting roughly 29 inches annually.
- What is the warmest month in St. Paul?
- July typically brings the warmest temperatures, averaging about 73°F.
- What is the coldest month in St. Paul?
- January typically brings the coldest temperatures, averaging about 16°F.
- When can I start a vegetable garden in St. Paul?
- Cool-season crops like peas and lettuce can be planted around the last spring frost in mid-May, while warm-season crops such as tomatoes and peppers should wait 1–2 weeks after.
- How many rainy days does St. Paul get?
- The city averages about 54 rainy days per year.
- What hardiness zone is St. Paul?
- Check the USDA's online lookup tool with the city ZIP code for St. Paul's current hardiness zone designation, which is based on the lowest average winter temperature.
Climate
St. Paul, Minnesota experiences a warm-summer humid continental climate. January temperatures hover near 16°F while July averages 73°F, creating a 57°F seasonal swing.
Annual precipitation totals about 29 inches across roughly 54 rainy days throughout the year.
Several factors shape the local weather patterns: latitude at 44.9°N, proximity to large water bodies, and elevation. These elements determine growing conditions, frost timing, and daily weather variations.