The official National Weather Service forecast for Red Oak — 41.0097°N, 95.2255°W, population 5,516, 30 miles from I-29.
| Montgomery County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 32 | 37 | 51 | 63 | 73 | 83 | 85 | 84 | 78 | 65 | 51 | 37 | 62 |
| Avg low °F | 14 | 17 | 29 | 39 | 50 | 61 | 65 | 62 | 54 | 42 | 29 | 19 | 40 |
| Precip in | 0.8 | 1.1 | 2.0 | 3.4 | 5.3 | 4.9 | 3.9 | 4.2 | 3.1 | 3.0 | 1.6 | 1.2 | 34.5 |
1996–2025 normals for Montgomery County — the climate division Red Oak sits in. All-time county record high 104.6°F (1974-07-22); record low -27.9°F (1974-01-12). Source: NOAA / National Weather Service.