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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
Nearby towns & communities
Birch Run
Bridgeport
Buena Vista
Burt
Chesaning
Freeland
Hemlock
Merrill
Oakley
Robin Glen-Indiantown
Saginaw
Shields
St. Charles
Zilwaukee
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.