Stillwater, Minnesota Weather
Great rains sometimes fall. Day 43 of summer. Read this microseason across nine climate regions →
Stillwater weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayAug 2Overcast——84°61°—
- MondayAug 3Overcast——87°63°+3°
- TuesdayAug 4Overcast43%—87°66°0°
- WednesdayAug 5Overcast——88°58°+1°
- ThursdayAug 6Overcast——92°60°+4°
- FridayAug 7Thunderstorm18%0.28″96°64°+4°
- SaturdayAug 8Light Showers22%0.60″95°62°-1°
AQI 54 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 11.1 µg/m³ (AQI 55) with a 0.97 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in stagnant air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 11.1 µg/m³ (AQI 55) with a 0.97 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.97
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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).
Red sky at night, sailor's delight.
- Moonrise
- 9:56 PM
- Moonset
- 10:17 AM
- In sign
- ♓︎ Pisces
Great rains sometimes fall
Stillwater at a glance
- Today vs. normal: 15°F above the seasonal normal for this latitude
- Last frost: May 16 (climatological average for this latitude)
- Microseason: Aug 1–5
- Planting window: Sow fall peas. Start kale and collard seedlings for fall.
ZIP code: 55082
16-Day Forecast — Stillwater
- Sun84°61°0%
- Mon87°63°2%
- Tue87°66°43%
- Wed88°58°5%
- Thu92°60°7%
- Fri96°64°18%
- Sat95°62°22%
- Sun84°66°22%
- Mon83°60°14%
- Tue72°61°21%
- Wed83°68°21%
- Thu83°66°27%
- Fri90°67°20%
- Sat81°59°18%
- Sun73°59°23%
- Mon84°62°20%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of August 2, 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 — Stillwater
SPC includes Stillwater in the general thunderstorm area tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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.
Sun & seasons in Stillwater
Stillwater sits in Washington County, where the year’s longest day runs 15h 37m of daylight and its shortest just 8h 45m — a swing of +6h 52m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Minneapolis, the state’s largest city, lies about 22 miles to the WSW. The nearest town Stillwater tracks is St. Paul, roughly 15 miles to the WSW.
Air quality in Stillwater’s county has trended dirtier since 2020; its cleanest year on record was 2020 (median AQI 33). See the full air-quality history for Stillwater.
ZIP codes in Stillwater
- 55082
- 55083