St. Johns, MI Weather & Growing Conditions
Tonight
62°F
Partly Cloudy
Partly cloudy, with a low around 62. South southeast wind around 14 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Partly Cloudy | 14 mph SSE | 9% |
| Wednesday | 71°F | Rain Showers | 14 to 17 mph S | 86% |
| Wednesday Night | 50°F | Rain Showers then Mostly Cloudy | 12 mph SW | 80% |
| Thursday | 59°F | Mostly Cloudy then Chance Rain Showers | 10 to 15 mph SW | 32% |
| Thursday Night | 44°F | Chance Rain Showers | 5 to 9 mph W | 51% |
| Friday | 52°F | Chance Rain Showers | 5 to 12 mph NNW | 53% |
| Friday Night | 35°F | Chance Rain Showers | 9 mph NNW | 44% |
| Saturday | 51°F | Partly Sunny | 8 mph NW | 11% |
| Saturday Night | 32°F | Partly Cloudy | 5 mph WSW | 4% |
| Sunday | 55°F | Mostly Sunny then Slight Chance Rain Showers | 6 to 13 mph W | 19% |
| Sunday Night | 35°F | Slight Chance Rain Showers then Partly Cloudy | 6 to 10 mph WNW | 19% |
| Monday | 59°F | Mostly Sunny | 6 to 13 mph W | 9% |
| Monday Night | 39°F | Partly Cloudy | 10 mph WSW | 7% |
| Tuesday | 60°F | Mostly Sunny | 9 to 15 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Johns, MI
Last spring frost
Apr 28
First fall frost
Oct 24
Growing season
179 days
Hardiness zone
6a
Explore more for St. Johns, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Saint Johns, Mi (1.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.