| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 9°F | 29°F | 19°F | 1.7" |
| February | 10°F | 30°F | 20°F | 1.6" |
| March | 19°F | 40°F | 29°F | 1.7" |
| April | 32°F | 55°F | 43°F | 2.8" |
| May | 43°F | 69°F | 56°F | 3.8" |
| June | 52°F | 76°F | 63°F | 5.0" |
| July | 57°F | 80°F | 68°F | 5.0" |
| August | 55°F | 78°F | 66°F | 3.8" |
| September | 48°F | 73°F | 59°F | 2.7" |
| October | 38°F | 59°F | 48°F | 4.0" |
| November | 27°F | 46°F | 36°F | 1.9" |
| December | 17°F | 34°F | 25°F | 2.9" |
| Index | Morrisville | Vermont | National |
| Air quality index | 37 | 36 | 42 |
| Pollution index | 1,278,430 | 1,478,772 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 335 |
| Days with moderate air quality | 30 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Cambridge, VT | 244 | 37 | 26.0% |
| Stowe, VT | 600 | 37 | 26.0% |
| Cabot, VT | 228 | 37 | 26.0% |
| Greensboro, VT | 125 | 37 | 26.0% |
| Jeffersonville, VT | 667 | 37 | 26.0% |
| Morrisville, VT | 2,017 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Fort Denaud, FL | 2,017 | 36 | 28.0% |
| Pearson, GA | 2,017 | 26 | 48.0% |
| Ortonville, MN | 2,017 | 25 | 50.0% |
| St. Bonifacius, MN | 2,017 | 46 | 8.0% |
| Bottineau, ND | 2,017 | 36 | 28.0% |
| Morrisville, VT | 2,017 | 37 | 26.0% |
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