Amasa, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Amasa, a community in Iron County, Michigan.
This Afternoon
64°F
Rain Showers
Rain showers and patchy fog. Cloudy, with a high near 64. South wind around 5 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Amasa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Rain Showers | 5 mph S | 81% |
| Tonight | 56°F | Rain Showers | 5 mph SE | 96% |
| Wednesday | 63°F | Rain Showers | 5 to 10 mph SE | 91% |
| Wednesday Night | 43°F | Rain Showers | 0 to 5 mph SW | 88% |
| Thursday | 49°F | Rain Showers | 0 to 10 mph N | 98% |
| Thursday Night | 27°F | Chance Rain And Snow Showers then Cloudy | 5 to 10 mph N | 34% |
| Friday | 42°F | Partly Sunny | 5 mph N | 7% |
| Friday Night | 22°F | Partly Cloudy | 0 mph | 2% |
| Saturday | 48°F | Mostly Sunny | 0 to 5 mph W | 1% |
| Saturday Night | 27°F | Partly Cloudy | 0 mph | 13% |
| Sunday | 51°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 10 mph NW | 16% |
| Sunday Night | 29°F | Partly Cloudy | 0 to 5 mph W | 8% |
| Monday | 54°F | Partly Sunny | 5 to 10 mph SW | 3% |
| Monday Night | 32°F | Partly Cloudy | 5 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov) for Amasa (46.229, -88.458). Updated through the day.
Growing snapshot for Amasa
Last spring frost
Jun 6
First fall frost
Sep 9
Growing season
94 days
Hardiness zone
4a
More local growing data for Amasa: nearby ZIP 49903 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Amasa 1W, Mi (7.2 mi from Amasa). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.