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Best time to visit · Michigan, United States
For the most comfortable weather in Frankenmuth, aim for July – September. September tops our comfort score at 88/100, with highs around 72°F (22°C) and 2.9 in (74 mm) of rain. May & June and October are good shoulder-season months. The toughest months are December – February, mainly because of cool days.
Highs run from 28°F to 80°F across the year, and the yearly total is about 33.9 in (861 mm) of rain and snow.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 28°F-2°C | 30°F-1°C | 41°F5°C | 54°F12°C | 65°F19°C | 75°F24°C | 80°F26°C | 78°F26°C | 72°F22°C | 58°F15°C | 46°F8°C | 34°F1°C |
| Avg low | 16°F-9°C | 16°F-9°C | 24°F-4°C | 34°F1°C | 46°F8°C | 56°F13°C | 62°F17°C | 62°F17°C | 55°F13°C | 43°F6°C | 32°F0°C | 23°F-5°C |
| Rain/snow | 2.0 in50 mm | 2.0 in50 mm | 2.0 in51 mm | 3.5 in88 mm | 3.8 in97 mm | 3.4 in87 mm | 3.1 in79 mm | 3.3 in85 mm | 2.9 in74 mm | 3.4 in86 mm | 2.3 in59 mm | 2.2 in55 mm |
| Humidity | 87% | 85% | 79% | 75% | 75% | 76% | 75% | 75% | 75% | 78% | 81% | 86% |
| Cloud | 76% | 74% | 69% | 67% | 67% | 59% | 54% | 55% | 54% | 67% | 72% | 79% |
| Comfort | 43 | 44 | 47 | 65 | 81 | 80 | 84 | 83 | 88 | 72 | 52 | 42 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. The grid cell sits at about 196 m (643 ft), close to Frankenmuth's own ~194 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The coldest season, with highs of 28–34°F (-2–1°C) and lows down to 16°F (-9°C). It's the driest season, with only about 6.1 in (155 mm) of rain or snow, 18% of the year's total. December – February are cold enough for snow. Comfort scores bottom out in December – February; the season averages 43/100.
Temperatures climb through the season, from 41°F highs in March to 65°F by May. About 9.3 in (236 mm) of rain or snow falls across these months, 27% of the year's total. March is cold enough for snow. May score well without being the very best (season average 64/100).
Peak warmth: highs of 75–80°F (24–26°C). It's the wettest season, with about 9.9 in (251 mm) of rain, 29% of the year's total. July & August feel humid, with humidity near 75%. Comfort peaks here: July & August rank with the year's best, and the season averages 82/100.
Temperatures slide from 72°F highs in September to 46°F by November. About 8.6 in (219 mm) of rain falls across these months, 25% of the year's total. Lows bottom out around 32°F (0°C). September is among the best-scoring months (season average 71/100).
By comfort score: 5 Great, 2 Good, 2 Fair and 3 Tough. Great months: May – September. Tap a month for its own guide.
For the most comfortable weather in Frankenmuth, aim for July – September. September tops our comfort score at 88/100, with highs around 72°F (22°C) and 2.9 in (74 mm) of rain. May & June and October are good shoulder-season months. The toughest months are December – February, mainly because of cool days.
May is the wettest month, averaging about 3.8 in (97 mm) of rain. January is the driest, with about 2.0 in (50 mm). The yearly total is around 33.9 in (861 mm).
January is the coldest, with average lows of 16°F (-9°C) and highs of 28°F (-2°C). The warmest is July, with average highs of 80°F (26°C).
Yes: in July & August humidity averages 75% with warm temperatures, so it feels muggy. Summer highs peak around 80°F (26°C).
On average, yes: lows fall below 32°F (0°C) in December – March, bottoming out around 16°F (-9°C) in January.
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