| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 27°F | 44°F | 35°F | 3.0" |
| February | 27°F | 46°F | 35°F | 2.1" |
| March | 36°F | 56°F | 45°F | 3.8" |
| April | 46°F | 68°F | 56°F | 4.4" |
| May | 53°F | 74°F | 63°F | 4.5" |
| June | 61°F | 81°F | 70°F | 3.9" |
| July | 64°F | 82°F | 72°F | 5.0" |
| August | 64°F | 82°F | 72°F | 3.7" |
| September | 57°F | 76°F | 66°F | 2.9" |
| October | 47°F | 67°F | 56°F | 3.3" |
| November | 37°F | 57°F | 46°F | 2.5" |
| December | 31°F | 48°F | 39°F | 3.6" |
| Index | Montcalm | West Virginia | National |
| Air quality index | 295 | 126 | 42 |
| Pollution index | 655,580 | 1,996,538 | 2,726,193 |
| Measurement | Total |
| Days measured | 120 |
| Days with good air quality | 106 |
| Days with moderate air quality | 14 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.100% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.003% |
| Lead | 0.010% |
| Mercury | 0.005% |
| City | Population | Air Quality Index | National Avg. |
| Gratton, VA | 1,003 | 295 | 490.0% |
| Brush Fork, WV | 1,025 | 295 | 490.0% |
| Pocahontas, VA | 242 | 295 | 490.0% |
| Crumpler, WV | 224 | 295 | 490.0% |
| Matoaka, WV | 191 | 295 | 490.0% |
| Montcalm, WV | 582 | 295 | 490.0% |
| City | Population | Air Quality Index | National Avg. |
| Sulphur Rock, AR | 582 | 45 | 10.0% |
| Laurel Hill, FL | 582 | 31 | 38.0% |
| Murrayville, IL | 582 | 40 | 20.0% |
| Tovey, IL | 582 | 40 | 20.0% |
| Bay Port, MI | 582 | 26 | 48.0% |
| Montcalm, WV | 582 | 295 | 490.0% |
Here are the best places to live in West Virginia
Check out the 10 safest cities in West Virginia
See the best places to live in Montcalm
Check out the 10 most dangerous cities in West Virginia