| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 24°F | 43°F | 33°F | 2.3" |
| February | 25°F | 45°F | 34°F | 1.7" |
| March | 33°F | 56°F | 43°F | 2.9" |
| April | 42°F | 68°F | 55°F | 3.7" |
| May | 51°F | 76°F | 63°F | 4.5" |
| June | 60°F | 84°F | 72°F | 3.9" |
| July | 64°F | 88°F | 76°F | 3.3" |
| August | 62°F | 86°F | 74°F | 3.1" |
| September | 56°F | 80°F | 67°F | 3.3" |
| October | 45°F | 68°F | 56°F | 4.2" |
| November | 35°F | 57°F | 45°F | 2.4" |
| December | 28°F | 47°F | 37°F | 3.2" |
| Index | Middletown | Virginia | National |
| Air quality index | 38 | 58 | 42 |
| Pollution index | 909,202 | 1,561,881 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 333 |
| Days with moderate air quality | 32 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.060% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.020% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Apple Mountain Lake, VA | 1,345 | 38 | 24.0% |
| Skyland Estates, VA | 941 | 38 | 24.0% |
| Boyce, VA | 867 | 38 | 24.0% |
| Strasburg, VA | 6,643 | 38 | 24.0% |
| Front Royal, VA | 15,214 | 38 | 24.0% |
| Middletown, VA | 1,585 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Worthington Hills, KY | 1,585 | 49 | 2.0% |
| Tome, NM | 1,585 | 53 | 6.0% |
| Franklin, TX | 1,585 | 38 | 24.0% |
| Rustburg, VA | 1,585 | 26 | 48.0% |
| Mulberry, AR | 1,586 | 36 | 28.0% |
| Middletown, VA | 1,585 | 38 | 24.0% |
Here are the best places to live in Virginia
See the best places to live in Middletown
Most Dangerous States In The US
These are the 10 cheapest cities in Virginia