Weather and climate in Billings, MT
What the weather is like in Billings
The warmest month in Billings is July, with average highs of 89°F. The coolest is February, when nights average 18°F. About 16.9 in of rain and snow falls in a typical year, most in May and least in January.
Skies are clearest in July (41% average cloud cover) and cloudiest in March (71%). Combining cloud with the length of truly dark nights, September, November, October offer the most clear, dark hours for stargazing.
Clear, dark hours per night
Hours of full astronomical darkness in mid-month, multiplied by the average share of clear sky. A rough guide to how much good observing time a typical night offers.
Monthly averages
| Month | High | Low | Precipitation | Cloud cover | Humidity | Wind | Dark hours |
|---|---|---|---|---|---|---|---|
| January | 35°F | 18°F | 0.6 in | 68% | 72% | 8 mph | 11.4 h |
| February | 37°F | 18°F | 0.7 in | 70% | 68% | 8 mph | 10.2 h |
| March | 48°F | 25°F | 1.0 in | 71% | 63% | 7 mph | 8.7 h |
| April | 57°F | 33°F | 1.9 in | 69% | 58% | 7 mph | 6.7 h |
| May | 67°F | 42°F | 3.1 in | 66% | 57% | 7 mph | 4.6 h |
| June | 78°F | 52°F | 2.5 in | 56% | 54% | 6 mph | 2.9 h |
| July | 89°F | 61°F | 1.3 in | 41% | 45% | 5 mph | 3.8 h |
| August | 85°F | 58°F | 1.3 in | 45% | 44% | 5 mph | 6.0 h |
| September | 74°F | 48°F | 1.4 in | 50% | 50% | 6 mph | 8.1 h |
| October | 57°F | 35°F | 1.6 in | 62% | 60% | 7 mph | 9.8 h |
| November | 45°F | 25°F | 0.7 in | 66% | 65% | 7 mph | 11.1 h |
| December | 34°F | 18°F | 0.7 in | 69% | 71% | 7 mph | 11.7 h |
Climate averages: NASA POWER, 2001–2025, for the grid area around 46.00, -108.75 (about 50 km across). High and low temperatures are estimated from the monthly mean and the average daily range. Hills, coasts and cities can differ from the area average. Aurora outlook for Billings · Sources and methods.