Temperature
Cold by day, freezing at night.
Bay City is usually most comfortable in June, August, and September. Typical daytime highs range from 30–82°F across the year. Most months see little rain.

Cold by day, freezing at night.
Some precipitation is expected this month.
A mix of sunshine and cloud.
Humidity is rarely noticeable in the cool air.
In November, afternoons feel about 36° and nights feel near 27°.
Mostly cloudy skies this month.
Calm winds are typical in November.
November late afternoons are around 43°F, easing to about 40°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 30 | 17 | 2.2 | 9 | 5.4 | 77 |
| Feb | 33 | 19 | 1.8 | 8 | 7.1 | 74 |
| Mar | 44 | 26 | 2.2 | 9 | 8.6 | 68 |
| Apr | 57 | 38 | 3.5 | 11 | 9.4 | 64 |
| May | 69 | 49 | 3.6 | 12 | 10.9 | 66 |
| Jun | 78 | 59 | 3.5 | 11 | 12.4 | 68 |
| Jul | 82 | 63 | 3.0 | 10 | 12.8 | 69 |
| Aug | 80 | 61 | 3.0 | 10 | 11.5 | 73 |
| Sep | 73 | 54 | 2.8 | 9 | 9.8 | 74 |
| Oct | 60 | 43 | 2.9 | 10 | 7.4 | 74 |
| Nov | 46 | 33 | 2.5 | 9 | 5.8 | 74 |
| Dec | 35 | 24 | 2.1 | 9 | 4.9 | 78 |
Similar climates
Want a side-by-side climate view? Compare Bay City with New York City.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 27, 2026
Data & methodology