Crystal Falls, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Crystal Falls, a city in Iron County, Michigan.
Overnight
42°F
Slight Chance Light Rain
A slight chance of rain. Mostly cloudy, with a low around 42. East wind around 0 mph. Chance of precipitation is 20%.
7-day forecast for Crystal Falls
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Slight Chance Light Rain | 0 mph | 21% |
| Saturday | 63°F | Chance Light Rain | 0 to 5 mph E | 29% |
| Saturday Night | 42°F | Mostly Cloudy | 0 to 5 mph NE | 8% |
| Sunday | 64°F | Partly Sunny | 5 to 10 mph N | 0% |
| Sunday Night | 36°F | Mostly Cloudy | 0 to 10 mph NE | 0% |
| Monday | 61°F | Partly Sunny | 5 mph E | 1% |
| Monday Night | 34°F | Partly Cloudy then Areas Of Frost | 0 to 5 mph NE | 1% |
| Tuesday | 63°F | Areas Of Frost then Mostly Sunny | 0 to 5 mph E | 1% |
| Tuesday Night | 36°F | Mostly Clear then Patchy Frost | 0 to 5 mph E | 4% |
| Wednesday | 66°F | Patchy Frost then Sunny | 0 to 5 mph E | 4% |
| Wednesday Night | 39°F | Partly Cloudy | 0 to 5 mph E | 2% |
| Thursday | 69°F | Mostly Sunny | 0 to 5 mph SE | 3% |
| Thursday Night | 41°F | Partly Cloudy | 0 mph | 7% |
| Friday | 72°F | Mostly Sunny | 0 to 5 mph NW | 7% |
Forecast source: National Weather Service (api.weather.gov) for Crystal Falls (46.090, -88.321). Updated through the day.
Growing snapshot for Crystal Falls
Last spring frost
Jun 6
First fall frost
Sep 9
Growing season
94 days
Hardiness zone
4a
More local growing data for Crystal Falls: nearby ZIP 49920 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Amasa 1W, Mi (9.9 mi from Crystal Falls). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.