Portage, MI Weather & Growing Conditions
Today
83°F
Sunny
Sunny, with a high near 83. South southwest wind 3 to 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 3 to 7 mph SSW | 0% |
| Tonight | 59°F | Mostly Clear | 2 to 6 mph SSW | 0% |
| Wednesday | 82°F | Partly Sunny then Chance Showers And Thunderstorms | 3 to 8 mph SW | 38% |
| Wednesday Night | 62°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 2 to 7 mph SW | 81% |
| Thursday | 79°F | Showers And Thunderstorms | 2 to 6 mph SW | 81% |
| Thursday Night | 59°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 1 to 5 mph SSW | 70% |
| Friday | 82°F | Mostly Sunny | 1 to 5 mph SW | 14% |
| Friday Night | 60°F | Mostly Clear | 1 to 5 mph WSW | 14% |
| Saturday | 83°F | Mostly Sunny | 1 to 9 mph SW | 12% |
| Saturday Night | 65°F | Chance Rain Showers | 3 to 8 mph SW | 26% |
| Sunday | 85°F | Chance Rain Showers | 5 to 13 mph SW | 26% |
| Sunday Night | 66°F | Chance Rain Showers | 6 to 13 mph SW | 42% |
| Monday | 84°F | Chance Rain Showers | 5 to 10 mph WSW | 42% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 5 to 10 mph WSW | 49% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Portage, MI
Last spring frost
Apr 28
First fall frost
Oct 18
Growing season
172 days
Hardiness zone
6a
Explore more for Portage, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Kalamazoo Battle Ck Intl Ap, Mi (2.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.