Caspian, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Caspian, a city in Iron County, Michigan.
Tonight
42°F
Patchy Fog
Patchy fog between 11pm and 1am. Mostly cloudy, with a low around 42. Northeast wind 0 to 5 mph.
7-day forecast for Caspian
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 42°F | Patchy Fog | 0 to 5 mph NE | 6% |
| Sunday | 61°F | Partly Sunny | 5 to 10 mph NE | 5% |
| Sunday Night | 35°F | Mostly Cloudy | 5 to 10 mph NE | 0% |
| Monday | 60°F | Mostly Cloudy | 0 to 5 mph E | 0% |
| Monday Night | 31°F | Partly Cloudy | 0 to 5 mph E | 0% |
| Tuesday | 63°F | Sunny | 0 to 5 mph E | 0% |
| Tuesday Night | 35°F | Mostly Clear | 0 to 5 mph E | 1% |
| Wednesday | 66°F | Sunny | 0 to 5 mph E | 1% |
| Wednesday Night | 38°F | Mostly Clear | 0 to 5 mph E | 1% |
| Thursday | 67°F | Mostly Sunny | 0 to 5 mph E | 4% |
| Thursday Night | 41°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 72°F | Partly Sunny | 0 to 5 mph NE | 4% |
| Friday Night | 43°F | Partly Cloudy | 0 mph | 2% |
| Saturday | 72°F | Mostly Sunny | 0 to 5 mph SW | 6% |
Forecast source: National Weather Service (api.weather.gov) for Caspian (46.065, -88.627). Updated through the day.
Growing snapshot for Caspian
Last spring frost
Jun 4
First fall frost
Sep 10
Growing season
95 days
Hardiness zone
4a
More local growing data for Caspian: nearby ZIP 49915 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Stambaugh 2Sse, Mi (0.6 mi from Caspian). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.