| 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. |
| Norman, OK | 124,086 | 48 | 4.0% |
| The Village, OK | 9,500 | 48 | 4.0% |
| Del City, OK | 21,762 | 48 | 4.0% |
| Nicoma Park, OK | 2,550 | 48 | 4.0% |
| Woodlawn Park, OK | 167 | 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
These are the 10 most affordable cities in Oklahoma
Top 10 cities in Oklahoma with the best education system
10 best cities to buy a new house in Oklahoma