| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 29°F | 53°F | 39°F | 4.2" |
| February | 32°F | 56°F | 42°F | 3.7" |
| March | 43°F | 67°F | 53°F | 6.3" |
| April | 51°F | 75°F | 61°F | 9.1" |
| May | 59°F | 80°F | 69°F | 9.8" |
| June | 69°F | 89°F | 79°F | 11.6" |
| July | 72°F | 94°F | 82°F | 12.0" |
| August | 71°F | 93°F | 81°F | 8.3" |
| September | 64°F | 86°F | 73°F | 5.3" |
| October | 52°F | 75°F | 62°F | 7.5" |
| November | 42°F | 64°F | 52°F | 4.4" |
| December | 31°F | 52°F | 40°F | 4.6" |
| Index | Valley Brook | Oklahoma | National |
| Air quality index | 48 | 55 | 42 |
| Pollution index | 715,482 | 1,271,533 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 204 |
| Days with moderate air quality | 159 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.100% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.030% |
| Mercury | 0.070% |
| City | Population | Air Quality Index | National Avg. |
| Newcastle, OK | 10,425 | 48 | 4.0% |
| Nichols Hills, OK | 3,910 | 48 | 4.0% |
| Choctaw, OK | 12,467 | 48 | 4.0% |
| Mustang, OK | 22,228 | 48 | 4.0% |
| Spencer, OK | 3,985 | 48 | 4.0% |
| Valley Brook, OK | 904 | 48 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Valley Head, AL | 904 | 39 | 22.0% |
| Gibson, GA | 904 | 47 | 6.0% |
| Meredosia, IL | 904 | 41 | 18.0% |
| Martin Lake, MN | 904 | 46 | 8.0% |
| Emerson, NE | 904 | 35 | 30.0% |
| Valley Brook, OK | 904 | 48 | 4.0% |
Here are the best places to live in Oklahoma
Check out the 10 safest cities in Oklahoma
Check out the 10 most dangerous cities in Oklahoma
Most Dangerous Cities In The US