Weather history and climate summary information is available for the following locations:
- Billings
- Glasgow
- Great Falls
- Helena
- Lewistown
- Miles City
- Missoula
Warmest July Days
The warmest July days in Montana are:
| Miles City, Montana | 2003 | 113°F |
| Miles City, Montana | 2002 | 109.9°F |
| Miles City, Montana | 2007 | 109.9°F |
| Billings, Montana | 2002 | 108°F |
| Miles City, Montana | 1999 | 107.6°F |
Coldest July Days
The coldest July days in Montana were:
| Missoula, Montana | 1988 | 32.7°F |
| Lewistown, Montana | 1999 | 33.8°F |
| Glasgow, Montana | 1982 | 34°F |
| Missoula, Montana | 1984 | 35.1°F |
| Missoula, Montana | 1994 | 35.1°F |
Wettest July Days
The wettest single days in July occurred:
| Great Falls, Montana | 1982 | 10.9 inches |
| Billings, Montana | 1985 | 10.6 inches |
| Billings, Montana | 1982 | 10.6 inches |
| Miles City, Montana | 1985 | 2.6 inches |
| Glasgow, Montana | 1975 | 2.4 inches |