The official National Weather Service forecast for Jackson — 43.4799°N, 110.7624°W, population 10,760, 140.6 miles from I-80.
| Teton County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 26 | 29 | 38 | 45 | 54 | 64 | 74 | 72 | 62 | 48 | 34 | 26 | 48 |
| Avg low °F | 7 | 8 | 14 | 21 | 30 | 37 | 43 | 41 | 35 | 26 | 15 | 8 | 24 |
| Precip in | 4.1 | 3.8 | 3.5 | 3.2 | 3.1 | 2.3 | 1.1 | 1.6 | 2.0 | 2.7 | 3.5 | 4.5 | 35.4 |
1996–2025 normals for Teton County — the climate division Jackson sits in. All-time county record high 87.8°F (2002-07-14); record low -40.1°F (1963-01-12). Source: NOAA / National Weather Service.