St. Charles, Michigan Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
St. Charles weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain44%0.90″84°70°—
- SundayJul 5Overcast19%—79°66°-5°
- MondayJul 6Overcast——78°59°-1°
- TuesdayJul 7Mostly Clear——82°57°+4°
- WednesdayJul 8Overcast11%—83°60°+1°
- ThursdayJul 9Light Drizzle29%—77°65°-6°
- FridayJul 10Overcast23%—81°64°+4°
AQI 35 (Good), driven by PM2.5. AQI down 20 over the last 6 hours — air quality is improving sharply. PM scrubbed by 2 hours of recent rain — PM2.5 down to 6.3 µg/m³, PM10 to 7.5 µg/m³.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 6.3 µg/m³, PM10 to 7.5 µg/m³.
- PM2.5/PM10
- 0.84
- Wind
- light
- Recent rain
- 2h 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:36 PM
- Moonset
- 10:37 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
St. Charles at a glance
- Today vs. normal: 70°F — typical for the season
- Last frost: May 6 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
15-Day Forecast — St. Charles
- Sat85°69°44%
- Sun79°66°19%
- Mon78°59°5%
- Tue82°57°2%
- Wed83°60°11%
- Thu77°65°29%
- Fri81°64°23%
- Sat82°62°17%
- Sun77°62°13%
- Mon83°60°15%
- Tue72°63°12%
- Wed81°58°15%
- Thu82°60°36%
- Fri82°66°35%
- Sat73°58°13%
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. Charles
SPC includes St. Charles in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
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.
ZIP codes in St. Charles
- 48655