Trimountain, MI Weather & Growing Conditions
Today
75°F
Chance Rain Showers then Partly Sunny
A chance of rain showers before 11am. Partly sunny, with a high near 75. West wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Chance Rain Showers then Partly Sunny | 10 to 15 mph W | 33% |
| Tonight | 56°F | Partly Cloudy | 5 to 10 mph W | 1% |
| Wednesday | 75°F | Sunny | 5 to 10 mph W | 0% |
| Wednesday Night | 58°F | Mostly Clear | 0 to 10 mph SW | 0% |
| Thursday | 85°F | Sunny | 10 mph SW | 3% |
| Thursday Night | 66°F | Mostly Clear | 5 to 10 mph SW | 3% |
| Friday | 85°F | Sunny then Slight Chance Showers And Thunderstorms | 10 mph SW | 15% |
| Friday Night | 63°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SW | 29% |
| Saturday | 79°F | Chance Rain Showers | 5 to 10 mph W | 25% |
| Saturday Night | 61°F | Chance Rain Showers | 5 mph W | 42% |
| Sunday | 78°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 33% |
| Sunday Night | 59°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 mph W | 27% |
| Monday | 77°F | Partly Sunny | 5 to 10 mph W | 14% |
| Monday Night | 58°F | Slight Chance Rain Showers | 5 mph NW | 16% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Trimountain, MI
Last spring frost
Jun 1
First fall frost
Sep 23
Growing season
115 days
Hardiness zone
5a
Explore more for Trimountain, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Jacobsville, Mi (10.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.