| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 13°F | 37°F | 24°F | 0.5" |
| February | 17°F | 40°F | 28°F | 1.1" |
| March | 27°F | 54°F | 39°F | 1.6" |
| April | 33°F | 58°F | 44°F | 3.1" |
| May | 42°F | 67°F | 54°F | 5.7" |
| June | 50°F | 80°F | 64°F | 5.2" |
| July | 59°F | 93°F | 75°F | 2.8" |
| August | 54°F | 88°F | 70°F | 1.9" |
| September | 46°F | 79°F | 61°F | 1.3" |
| October | 36°F | 64°F | 48°F | 3.2" |
| November | 25°F | 50°F | 37°F | 0.8" |
| December | 15°F | 35°F | 25°F | 0.9" |
| Index | Hulett | Wyoming | National |
| Air quality index | 40 | 39 | 42 |
| Pollution index | 486,607 | 1,779,975 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 309 |
| Days with moderate air quality | 55 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.080% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Hulett, WY | 399 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| St. Paul, AK | 399 | 31 | 38.0% |
| Maxeys, GA | 399 | 44 | 12.0% |
| Dowling, MI | 399 | 38 | 24.0% |
| Fifty Lakes, MN | 399 | 29 | 42.0% |
| New Eucha, OK | 399 | 36 | 28.0% |
| Hulett, WY | 399 | 40 | 20.0% |
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