Brethren, MI Weather & Growing Conditions
Today
84°F
Mostly Sunny
Mostly sunny. High near 84, with temperatures falling to around 82 in the afternoon. South wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 5 to 10 mph S | 0% |
| Tonight | 63°F | Showers And Thunderstorms Likely | 0 to 10 mph S | 59% |
| Wednesday | 78°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 53% |
| Wednesday Night | 55°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 29% |
| Thursday | 80°F | Slight Chance Rain Showers then Mostly Sunny | 0 to 5 mph E | 20% |
| Thursday Night | 54°F | Mostly Clear | 0 to 5 mph SW | 9% |
| Friday | 83°F | Sunny | 0 to 5 mph SW | 2% |
| Friday Night | 60°F | Mostly Clear | 0 to 5 mph SW | 7% |
| Saturday | 83°F | Sunny | 0 to 10 mph SW | 14% |
| Saturday Night | 63°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 40% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 0 to 10 mph SW | 40% |
| Sunday Night | 60°F | Showers And Thunderstorms Likely | 0 to 5 mph SW | 59% |
| Monday | 81°F | Chance Rain Showers | 0 to 5 mph W | 38% |
| Monday Night | 59°F | Chance Rain Showers | 0 to 5 mph NW | 44% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Brethren, MI
Last spring frost
May 28
First fall frost
Sep 25
Growing season
119 days
Hardiness zone
5b
Explore more for Brethren, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Wellston 1N, Mi (4.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.