St. Stephen, Minnesota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
St. Stephen weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain44%0.71″85°63°—
- SundayJul 5Overcast18%—86°62°+1°
- MondayJul 6Overcast28%—84°64°-2°
- TuesdayJul 7T-storm w/ Hail42%0.22″84°66°0°
- WednesdayJul 8Heavy Showers61%1.8″76°64°-8°
- ThursdayJul 9Light Drizzle42%—77°57°+1°
- FridayJul 10Light Drizzle——69°59°-8°
AQI 52 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 12.5 µg/m³ (AQI 57) with a 0.78 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm 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
Ozone × UV × Sky
Ozone at AQI 53 now. With UV 5.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 37 around 1 PM.
- Present
- AQI 53
- UV peak
- 5.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 37
PM × Wind × Precip
PM2.5 at 12.5 µg/m³ (AQI 57) with a 0.78 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.78
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:21 PM
- Moonset
- 10:16 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
St. Stephen at a glance
- Today vs. normal: 16°F above the seasonal normal for this latitude
- Last frost: May 20 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — St. Stephen
- Sat85°63°44%
- Sun86°62°18%
- Mon84°64°28%
- Tue84°66°42%
- Wed76°64°61%
- Thu77°57°42%
- Fri69°59°9%
- Sat76°56°14%
- Sun77°55°15%
- Mon79°58°9%
- Tue83°60°4%
- Wed82°66°11%
- Thu79°66°14%
- Fri73°59°22%
- Sat68°59°23%
- Sun80°56°23%
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. Stephen
SPC has placed St. Stephen 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. Stephen
- 56375