Weather history and climate summary information is available for the following locations:
- Billings
- Glasgow
- Great Falls
- Helena
- Lewistown
- Miles City
- Missoula
Warmest June Days
The warmest June days in Montana are:
| Miles City, Montana | 2012 | 111°F |
| Glasgow, Montana | 1988 | 108°F |
| Miles City, Montana | 1988 | 106°F |
| Billings, Montana | 1984 | 105.1°F |
| Miles City, Montana | 2002 | 105.1°F |
Coldest June Days
The coldest June days in Montana were:
| Lewistown, Montana | 2009 | 28°F |
| Lewistown, Montana | 1981 | 29.8°F |
| Lewistown, Montana | 1979 | 29.8°F |
| Lewistown, Montana | 1984 | 30°F |
| Great Falls, Montana | 1982 | 30°F |
Wettest June Days
The wettest single days in June occurred:
| Great Falls, Montana | 1982 | 10.9 inches |
| Lewistown, Montana | 1996 | 4 inches |
| Missoula, Montana | 1995 | 3.6 inches |
| Glasgow, Montana | 2007 | 2.9 inches |
| Lewistown, Montana | 1978 | 2.7 inches |