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Frankenmuth, MI Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Frankenmuth, a city in Saginaw County, Michigan.

This Afternoon
71°F
Mostly Cloudy
Mostly cloudy. High near 71, with temperatures falling to around 67 in the afternoon. North northeast wind around 13 mph, with gusts as high as 22 mph.

7-day forecast for Frankenmuth

WhenTempForecastWindPrecip
This Afternoon 71°F Mostly Cloudy 13 mph NNE 0%
Tonight 50°F Mostly Cloudy then Chance Rain Showers 5 to 13 mph ENE 32%
Saturday 66°F Rain Showers Likely 5 to 8 mph ESE 70%
Saturday Night 53°F Showers And Thunderstorms Likely 5 to 9 mph E 73%
Sunday 68°F Chance Rain Showers 7 to 15 mph NE 36%
Sunday Night 48°F Slight Chance Rain Showers then Mostly Cloudy 8 to 15 mph NE 24%
Monday 63°F Mostly Cloudy 12 to 15 mph NE 3%
Monday Night 45°F Mostly Cloudy 9 to 15 mph NE 5%
Tuesday 63°F Partly Sunny 12 to 16 mph NE 8%
Tuesday Night 47°F Mostly Cloudy then Chance Rain Showers 10 to 16 mph ENE 36%
Wednesday 64°F Chance Rain Showers 13 mph ENE 40%
Wednesday Night 48°F Chance Rain Showers 5 to 13 mph NE 30%
Thursday 67°F Partly Sunny 6 to 10 mph NE 12%
Thursday Night 48°F Mostly Cloudy 3 to 10 mph NNE 12%

Forecast source: National Weather Service (api.weather.gov) for Frankenmuth (43.333, -83.739). Updated through the day.

Growing snapshot for Frankenmuth

Last spring frost
May 3
First fall frost
Oct 12
Growing season
161 days
Hardiness zone
6a

More local growing data for Frankenmuth: nearby ZIP 48734 weather · frost dates · planting calendar · Michigan frost dates

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Climate data from the nearest NOAA station, Frankenmuth 1Se, Mi (3.1 mi from Frankenmuth). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.