Harrietta, Michigan Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Harrietta weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast11%—81°67°—
- SundayJul 5Overcast——82°65°+1°
- MondayJul 6Overcast——84°55°+2°
- TuesdayJul 7Overcast——84°57°0°
- WednesdayJul 8Thunderstorm18%—82°61°-2°
- ThursdayJul 9Foggy33%—79°58°-3°
- FridayJul 10Overcast26%—83°53°+4°
AQI 35 (Good), driven by Ozone. AQI down 8 over the last 6 hours (gradual decline). Ozone at AQI 34. Overcast through the UV peak window (cloud cover ~81%) — afternoon ozone should stay flat.
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 34. Overcast through the UV peak window (cloud cover ~81%) — afternoon ozone should stay flat.
- Present
- AQI 34
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 8
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
- 11:44 PM
- Moonset
- 10:43 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Harrietta at a glance
- Today vs. normal: 67°F — typical for the season
- Last frost: May 12 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 49638
15-Day Forecast — Harrietta
- Sat80°66°11%
- Sun82°65°6%
- Mon84°55°2%
- Tue84°57°2%
- Wed82°61°18%
- Thu79°58°33%
- Fri83°53°26%
- Sat74°59°13%
- Sun70°57°12%
- Mon77°57°14%
- Tue66°59°14%
- Wed79°54°19%
- Thu81°60°35%
- Fri80°61°34%
- Sat78°54°19%
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 — Harrietta
SPC includes Harrietta in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- 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 Harrietta
- 49638