Frankenmuth, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Frankenmuth, a city in Saginaw County, Michigan.
Overnight
56°F
Clear
Clear, with a low around 56. South wind around 6 mph.
7-day forecast for Frankenmuth
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Clear | 6 mph S | 0% |
| Tuesday | 87°F | Sunny | 5 to 9 mph SSW | 0% |
| Tuesday Night | 61°F | Mostly Clear | 5 to 8 mph SSW | 0% |
| Wednesday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 23% |
| Wednesday Night | 63°F | Chance Showers And Thunderstorms | 2 to 8 mph W | 79% |
| Thursday | 81°F | Rain Showers | 3 to 7 mph WSW | 79% |
| Thursday Night | 60°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 1 to 6 mph ESE | 36% |
| Friday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph SW | 17% |
| Friday Night | 62°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 5 mph SW | 17% |
| Saturday | 88°F | Sunny | 5 to 13 mph SW | 5% |
| Saturday Night | 65°F | Mostly Clear then Chance Rain Showers | 5 to 12 mph SW | 30% |
| Sunday | 89°F | Chance Rain Showers | 6 to 16 mph SW | 30% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 7 to 14 mph WSW | 51% |
| Monday | 86°F | Chance Rain Showers | 7 to 10 mph WSW | 51% |
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 Aug 4, 2026.