Average Sunshine in Michigan for October
Number of Sunny Days
In the table below, the average number of Sunny Days for a city in Michigan is the total days this month when the sky is mostly clear. This includes the days when cloud covers up to 30% of the sky during daylight hours.
Partly Sunny Days have cloud covering from 40% to 70% of the sky during the daytime.
Total Days With Sun is a sum of the Sunny plus Partly Sunny days. The rest of the days are mainly overcast, with at least 80% cloud cover. All the numbers are annual averages, made from years of weather watching.
| City | Sunny | Partly Sunny | Total Days With Sun |
|---|---|---|---|
| Alpena | 5 | 8 | 13 |
| Detroit | 8 | 9 | 17 |
| Flint | 7 | 9 | 16 |
| Grand Rapids | 6 | 8 | 14 |
| Houghton Lake | 5 | 8 | 13 |
| Lansing | 7 | 9 | 16 |
| Muskegon | 7 | 8 | 15 |
| Sault Ste Marie | 5 | 7 | 12 |
Amount of Sun
Here's another way to look at how much sunshine a city gets. The % Sun number measures the percentage of time between sunrise and sunset that sunshine reaches the ground. Again, these amounts are monthly averages based on many years of weather observations.
| City | % Sun |
|---|---|
| Alpena | 42 |
| Detroit | 51 |
| Grand Rapids | 44 |
| Lansing | 50 |
| Marquette | 46 |
| Sault Ste Marie | 38 |
Reference
National Climatic Data Center. Comparative Climatic Data.