When is the last frost in Republic, MI?

Frost is possible in any month at the nearest NOAA station (Champion Van Riper Pk, MI), so there is no reliable average last frost date.

When is the first frost in Republic, MI?

Frost is possible in any month at the nearest NOAA station.

Are these frost dates a forecast?

No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.

Frost dates for 49879Republic, MI

Frost is possible in any month near Republic, based on NOAA 1991-2020 records for the Champion Van Riper Pk, MI station.

Frost is possible in any month. Even summer nights can drop to freezing at this station, so protect tender plants whenever cold nights are forecast.

Frost risk by date

NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.

Spring dates: chance of a frost AFTER the date. Fall dates: chance of a frost BEFORE the date.
Temperature	Last spring: 90% / 50% / 10% chance	First fall: 10% / 50% / 90% chance	Growing season (50%)	Years with at least one
Light frost (36°F)	—	—	65 days	100%
Frost / freeze (32°F)	—	—	96 days	100%
Hard freeze (28°F)	May 8 · May 28 · Jun 17	Sep 8 · Oct 1 · Oct 18	126 days	100%

Where these dates come from

ZIP code 49879 is matched to the NOAA station Champion Van Riper Pk, MI, 16.8 km away, at 1,599 ft elevation (106 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Champion Van Riper Pk, MI (used)	1,599 ft	—	—
Clarksburg, MI	1,554 ft	Jun 5	Sep 10
Ishpeming Wwtp, MI	1,406 ft	May 26	Sep 25
Amasa 1W, MI	1,470 ft	Jun 6	Sep 9

Frost dates near Republic

Champion, MI 49814 · last —, first —
Michigamme, MI 49861 · last —, first —
Ishpeming, MI 49849 · last May 22, first Sep 29
Channing, MI 49815 · last May 24, first Sep 25
Sagola, MI 49881 · last May 24, first Sep 25
Palmer, MI 49871 · last May 22, first Sep 29
Ralph, MI 49877 · last May 25, first Sep 24
Negaunee, MI 49866 · last May 22, first Sep 29

Frequently asked questions

When is the last frost in Republic, MI?: Frost is possible in any month at the nearest NOAA station (Champion Van Riper Pk, MI), so there is no reliable average last frost date.
When is the first frost in Republic, MI?: Frost is possible in any month at the nearest NOAA station.
Are these frost dates a forecast?: No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.