The official National Weather Service forecast for Midwest — 43.4114°N, 106.28°W, 6.1 miles from I-25.
| Natrona County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 33 | 35 | 45 | 53 | 63 | 77 | 86 | 83 | 73 | 57 | 44 | 34 | 57 |
| Avg low °F | 14 | 14 | 22 | 28 | 37 | 47 | 54 | 52 | 44 | 32 | 22 | 15 | 32 |
| Precip in | 0.5 | 0.6 | 0.9 | 1.5 | 2.1 | 1.3 | 0.9 | 0.8 | 1.0 | 1.2 | 0.5 | 0.5 | 11.8 |
1996–2025 normals for Natrona County — the climate division Midwest sits in. All-time county record high 99.8°F (1954-07-12); record low -37.2°F (1990-12-22). Source: NOAA / National Weather Service.