| Average Monthly Temperatures |
| TEMPERATURE | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC |
| DETROIT |
31.1 17.8 |
34.4 20.0 |
45.2 28.5 |
57.8 38.4 |
70.2 49.4 |
79.0 58.9 |
83.4 63.6 |
81.4 62.2 |
73.7 54.1 |
61.2 42.5 |
47.8 33.5 |
35.9 23.4 |
| FLINT |
29.2 13.3 |
32.3 15.3 |
43.1 24.3 |
56.2 34.6 |
69.0 45.2 |
77.0 54.6 |
82.0 59.1 |
79.5 57.4 |
71.9 49.4 |
59.7 38.6 |
46.3 29.8 |
34.2 19.1 |
| SAGINAW |
27.9 14.9 |
30.7 16.8 |
41.3 25.6 |
55.0 35.9 |
68.4 46.8 |
77.5 56.0 |
81.9 60.4 |
78.9 58.5 |
70.9 50.5 |
58.8 40.1 |
44.8 31.1 |
33.0 20.9 |
| Average Monthly Precipitation |
| PRECIPITATION | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC |
| DETROIT | 1.91" | 1.88" | 2.52" | 3.05" | 3.05" | 3.55" | 3.16" | 3.10" | 3.27" | 2.23" | 2.66" | 2.51" |
| FLINT |
1.57" | 1.35" | 2.22" | 3.13" | 2.74" | 3.07" | 3.17" | 3.43" | 3.76" | 2.34" | 2.65" | 2.18" |
| SAGINAW |
1.77" | 1.57" | 2.42" | 2.82" | 2.89" | 3.06" | 2.50" | 3.38" | 3.95" | 2.49" | 2.65" | 2.11" |
| Average Monthly Snowfall |
| SNOWFALL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC |
| DETROIT | 11.9" | 9.3" | 7.0" | 1.7" | Trace | 0" | 0" | 0" | 0" | 0.3" | 2.7" | 11.1" |
| FLINT |
13.2" | 9.4" | 7.7" | 2.6" | Trace | 0" | 0" | 0" | 0" | 0.3" | 3.5" | 11.6" |
| SAGINAW |
11.8" | 8.3" | 8.0" | 2.2" | Trace | 0" | 0" | 0" | 0" | 0.2" | 3.8" | 10.2" |
