South Lyon, Michigan Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
South Lyon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle57%0.03″86°68°—
- SundayJul 5Rain55%0.40″78°62°-8°
- MondayJul 6Drizzle20%0.04″73°61°-5°
- TuesdayJul 7Clear15%—83°60°+10°
- WednesdayJul 8Overcast——84°60°+1°
- ThursdayJul 9Light Drizzle37%—75°64°-9°
- FridayJul 10Foggy35%—83°59°+8°
AQI 41 (Good), driven by PM2.5. AQI down 23 over the last 6 hours — air quality is improving sharply. PM2.5 at 13.0 µg/m³, PM10 at 13.4 µg/m³ — typical background levels with no transport signature.
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 13.0 µg/m³, PM10 at 13.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.97
- Wind
- breezy
- Recent rain
- 1h in last 6h
- Pattern
- background
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
- 11:33 PM
- Moonset
- 10:36 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
South Lyon at a glance
- Today vs. normal: 69°F — typical for the season
- Last frost: May 1 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 48178
15-Day Forecast — South Lyon
- Sat82°67°57%
- Sun78°62°55%
- Mon73°61°20%
- Tue83°60°15%
- Wed84°60°9%
- Thu75°64°37%
- Fri83°59°35%
- Sat82°62°23%
- Sun77°62°13%
- Mon82°60°17%
- Tue71°63°11%
- Wed77°58°18%
- Thu82°60°32%
- Fri78°63°35%
- Sat76°60°13%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near South Lyon
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 — South Lyon
SPC includes South Lyon in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- 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.
ZIP codes in South Lyon
- 48178