Frequent temperatures in Billings during the time of September is 15. Throughout the month you should see a high of 25 and average daily low being 9 degrees celsius. We have put some more detail below here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 15 |
| High Temperature | 25 |
| Low Temperature | 9 |
Useful Links: Billings Weather: Average Weather & Yearly Climate