Portage, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Portage, a city in Kalamazoo County, Michigan.
Today
83°F
Sunny
Sunny, with a high near 83. South southwest wind around 7 mph.
7-day forecast for Portage
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 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 | 60°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 1 to 5 mph SSW | 69% |
| Friday | 82°F | Mostly Sunny | 1 to 5 mph SSW | 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) for Portage (42.197, -85.591). Updated through the day.
Growing snapshot for Portage
Last spring frost
Apr 28
First fall frost
Oct 18
Growing season
172 days
Hardiness zone
6a
More local growing data for Portage: nearby ZIP 49024 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Augusta
Climax
Comstock Northwest
Eastwood
Galesburg
Kalamazoo
Parchment
Richland
Schoolcraft
Scotts
Vicksburg
Westwood
Climate data from the nearest NOAA station, Kalamazoo Battle Ck Intl Ap, Mi (3.9 mi from Portage). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.