WHITE WASH ยท WEATHER
Hot summers,
hard winters.
The long record from nearby Green River shows a big swing between seasons and very little rain.
Monthly averages
Green River Aviation station, 1893 to 2005. Temperatures in degrees Fahrenheit, precipitation in inches.
| Month | Average high | Average low | Precipitation |
|---|---|---|---|
| January | 38.2 | 10.0 | 0.42 |
| February | 48.4 | 18.8 | 0.43 |
| March | 60.3 | 27.8 | 0.47 |
| April | 70.5 | 36.0 | 0.52 |
| May | 80.7 | 44.9 | 0.58 |
| June | 91.5 | 52.5 | 0.34 |
| July | 97.7 | 60.4 | 0.54 |
| August | 94.8 | 58.2 | 0.79 |
| September | 85.7 | 47.4 | 0.70 |
| October | 71.5 | 35.1 | 0.76 |
| November | 55.0 | 22.4 | 0.44 |
| December | 41.3 | 13.3 | 0.36 |
The station averaged just 6.34 inches of precipitation a year, with August the wettest month.
Source: Western Regional Climate Center: Green River Aviation, 1893 to 2005. Checked September 10, 2026.
The forecast on the day
Check the National Weather Service forecast for the White Wash trailhead and Utah 511 for I-70 before you go, and Utah Fire Info before any campfire.
Check the managing agency before you tow
This is an independent planning guide. Fees, hours, closures, fire orders and riding boundaries change. Confirm the current details with the BLM Moab Field Office.