St. Peter, Minnesota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
St. Peter weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast16%—86°67°—
- SundayJul 5Rain37%0.23″85°67°-1°
- MondayJul 6Overcast——84°66°-1°
- TuesdayJul 7Drizzle14%—86°68°+2°
- WednesdayJul 8Thunderstorm52%0.30″78°66°-8°
- ThursdayJul 9Overcast52%—79°60°+1°
- FridayJul 10Light Drizzle——73°60°-6°
AQI 45 (Good), driven by Ozone. AQI up 10 over the last 6 hours (gradual rise). Ozone at AQI 60 now. With UV 6.5 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 37 around 1 PM.
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 60 now. With UV 6.5 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 37 around 1 PM.
- Present
- AQI 60
- UV peak
- 6.5 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 37
PM × Wind × Precip
PM2.5 at 13.1 µg/m³ (AQI 58) with a 0.74 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.74
- Wind
- calm
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:17 PM
- Moonset
- 10:17 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
St. Peter at a glance
- Today vs. normal: 17°F above the seasonal normal for this latitude
- Last frost: May 12 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — St. Peter
- Sat86°67°16%
- Sun85°67°37%
- Mon84°66°2%
- Tue86°68°14%
- Wed78°66°52%
- Thu79°60°52%
- Fri73°60°7%
- Sat77°56°10%
- Sun78°57°15%
- Mon80°59°6%
- Tue84°63°6%
- Wed84°65°12%
- Thu85°69°20%
- Fri76°62°20%
- Sat71°58°27%
- Sun78°58°25%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 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. Peter
SPC has placed St. Peter in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
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.
ZIP codes in St. Peter
- 56082