Grand River, Ohio Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Grand River weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast42%—84°72°—
- SundayJul 5Overcast29%—81°72°-3°
- MondayJul 6Drizzle26%0.02″75°70°-6°
- TuesdayJul 7Partly Cloudy13%—76°65°+1°
- WednesdayJul 8Overcast——80°65°+4°
- ThursdayJul 9Thunderstorm31%0.09″82°70°+2°
- FridayJul 10Thunderstorm32%—78°70°-4°
AQI 42 (Good), driven by Ozone. AQI down 15 over the last 6 hours — air quality is improving sharply. Ozone at AQI 66 now. With UV 5.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 50 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 8 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 66 now. With UV 5.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 50 around 1 PM.
- Present
- AQI 66
- UV peak
- 5.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 50
PM × Wind × Precip
PM2.5 at 7.8 µg/m³ (AQI 43) with a 0.95 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.95
- 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
- 11:22 PM
- Moonset
- 10:27 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Grand River at a glance
- Today vs. normal: 12°F above the seasonal normal for this latitude
- Last frost: April 26 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 44045
16-Day Forecast — Grand River
- Sat84°72°42%
- Sun81°72°29%
- Mon75°70°26%
- Tue76°65°13%
- Wed80°65°8%
- Thu82°70°31%
- Fri78°70°32%
- Sat78°69°28%
- Sun77°69°26%
- Mon69°62°19%
- Tue79°62°22%
- Wed82°68°25%
- Thu83°71°26%
- Fri80°73°22%
- Sat81°71°29%
- Sun79°69°26%
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 — Grand River
SPC has placed Grand River in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- 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 Grand River
- 44045
- 44077