Weather and climate in Washington Terrace, UT
What the weather is like in Washington Terrace
The warmest month in Washington Terrace is July, with average highs of 88°F. The coolest is January, when nights average 16°F. About 21.3 in of rain and snow falls in a typical year, most in April and least in July.
Skies are clearest in July (34% average cloud cover) and cloudiest in December (68%). Combining cloud with the length of truly dark nights, September, October, November offer the most clear, dark hours for stargazing.
Clear, dark hours per night
Hours of full astronomical darkness in mid-month, multiplied by the average share of clear sky. A rough guide to how much good observing time a typical night offers.
Monthly averages
| Month | High | Low | Precipitation | Cloud cover | Humidity | Wind | Dark hours |
|---|---|---|---|---|---|---|---|
| January | 32°F | 16°F | 2.2 in | 64% | 84% | 3 mph | 11.2 h |
| February | 36°F | 20°F | 1.8 in | 67% | 78% | 3 mph | 10.2 h |
| March | 46°F | 28°F | 2.1 in | 66% | 67% | 4 mph | 9.0 h |
| April | 54°F | 33°F | 2.6 in | 62% | 61% | 3 mph | 7.3 h |
| May | 65°F | 42°F | 2.3 in | 57% | 55% | 3 mph | 5.7 h |
| June | 77°F | 52°F | 1.2 in | 38% | 45% | 3 mph | 4.6 h |
| July | 88°F | 62°F | 0.6 in | 34% | 39% | 3 mph | 5.1 h |
| August | 85°F | 59°F | 1.0 in | 36% | 38% | 3 mph | 6.7 h |
| September | 74°F | 50°F | 1.5 in | 35% | 42% | 3 mph | 8.4 h |
| October | 58°F | 37°F | 1.8 in | 48% | 53% | 3 mph | 9.8 h |
| November | 44°F | 27°F | 1.8 in | 59% | 65% | 3 mph | 11.0 h |
| December | 32°F | 16°F | 2.5 in | 68% | 81% | 3 mph | 11.5 h |
Climate averages: NASA POWER, 2001–2025, for the grid area around 41.00, -111.88 (about 50 km across). High and low temperatures are estimated from the monthly mean and the average daily range. Hills, coasts and cities can differ from the area average. Aurora outlook for Washington Terrace · Sources and methods.