Portage, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Portage, a city in Kalamazoo County, Michigan.
Today
70°F
Showers And Thunderstorms
Showers and thunderstorms before 10am, then patchy fog and showers and thunderstorms between 10am and 11am, then patchy fog and showers and thunderstorms between 11am and 5pm, then patchy fog and a chance of showers and thunderstorms. Mostly cloudy. High near 70, with temperatures falling to around 68 in the afternoon. Southeast wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Portage
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Showers And Thunderstorms | 8 mph SE | 94% |
| Tonight | 60°F | Patchy Fog | 2 to 6 mph SSE | 94% |
| Sunday | 69°F | Showers And Thunderstorms Likely | 5 to 12 mph N | 73% |
| Sunday Night | 49°F | Mostly Cloudy | 8 to 12 mph NE | 9% |
| Monday | 63°F | Mostly Cloudy | 12 mph ENE | 11% |
| Monday Night | 45°F | Mostly Cloudy | 8 to 12 mph NE | 11% |
| Tuesday | 63°F | Partly Sunny | 9 to 13 mph NE | 9% |
| Tuesday Night | 48°F | Slight Chance Rain Showers | 8 to 13 mph NE | 23% |
| Wednesday | 63°F | Chance Rain Showers | 12 mph NE | 40% |
| Wednesday Night | 48°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 30% |
| Thursday | 67°F | Partly Sunny | 5 to 9 mph NE | 5% |
| Thursday Night | 48°F | Mostly Cloudy | 2 to 7 mph NE | 5% |
| Friday | 71°F | Mostly Sunny | 3 to 8 mph NE | 3% |
| Friday Night | 48°F | Partly Cloudy | 6 mph NE | 3% |
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 Sep 19, 2026.