Harrietta, MI Weather & Growing Conditions
Tonight
47°F
Scattered Rain Showers
Scattered rain showers. Mostly cloudy. Low around 47, with temperatures rising to around 50 overnight. Southeast wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Scattered Rain Showers | 5 mph SE | 53% |
| Saturday | 65°F | Scattered Rain Showers | 5 to 10 mph SE | 53% |
| Saturday Night | 51°F | Scattered Rain Showers | 5 mph E | 50% |
| Sunday | 69°F | Scattered Rain Showers then Partly Sunny | 5 to 10 mph NE | 31% |
| Sunday Night | 45°F | Mostly Cloudy | 5 to 10 mph NE | 3% |
| Monday | 64°F | Mostly Cloudy | 10 mph NE | 1% |
| Monday Night | 42°F | Mostly Cloudy | 5 to 10 mph NE | 1% |
| Tuesday | 65°F | Partly Sunny | 5 to 10 mph NE | 7% |
| Tuesday Night | 43°F | Partly Cloudy | 5 to 10 mph E | 13% |
| Wednesday | 66°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 10 mph NE | 15% |
| Wednesday Night | 46°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph NE | 15% |
| Thursday | 70°F | Partly Sunny | 5 mph NE | 4% |
| Thursday Night | 46°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 72°F | Mostly Sunny | 0 to 5 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harrietta, MI
Last spring frost
May 28
First fall frost
Sep 25
Growing season
119 days
Hardiness zone
5b
Explore more for Harrietta, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Wellston 1N, Mi (10.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.