The official National Weather Service forecast for Dallas Center — 41.6844°N, 93.9611°W, 10 miles from I-35.
| Dallas County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 30 | 35 | 49 | 62 | 72 | 82 | 85 | 83 | 78 | 64 | 49 | 35 | 60 |
| Avg low °F | 13 | 16 | 28 | 38 | 50 | 60 | 64 | 61 | 53 | 41 | 29 | 18 | 39 |
| Precip in | 0.9 | 1.1 | 2.1 | 3.5 | 5.1 | 5.1 | 4.2 | 3.9 | 3.1 | 2.7 | 1.7 | 1.3 | 34.7 |
1996–2025 normals for Dallas County — the climate division Dallas Center sits in. All-time county record high 104.1°F (1955-07-31); record low -28.3°F (1996-02-03). Source: NOAA / National Weather Service.