The official National Weather Service forecast for Wendover — 40.7371°N, 114.0375°W, 0.3 miles from I-80. Forecasts here are written by NWS SLC, this county’s forecast office.
| Tooele County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 39 | 44 | 54 | 61 | 72 | 84 | 94 | 91 | 80 | 65 | 50 | 39 | 64 |
| Avg low °F | 19 | 23 | 30 | 35 | 44 | 54 | 62 | 60 | 50 | 37 | 27 | 19 | 38 |
| Precip in | 0.9 | 0.8 | 1.0 | 1.2 | 1.3 | 0.6 | 0.5 | 0.6 | 0.8 | 0.8 | 0.7 | 0.8 | 10.0 |
1996–2025 normals for Tooele County — the climate division Wendover sits in. All-time county record high 105.8°F (2026-07-13); record low -18.1°F (1990-12-23). Source: NOAA / National Weather Service.