The official National Weather Service forecast for Mobridge — 45.5372°N, 100.4279°W, 112.4 miles from I-90.
| Walworth County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 24 | 28 | 41 | 55 | 68 | 78 | 85 | 83 | 75 | 58 | 42 | 28 | 55 |
| Avg low °F | 6 | 8 | 19 | 30 | 42 | 54 | 60 | 57 | 48 | 35 | 21 | 10 | 32 |
| Precip in | 0.4 | 0.5 | 0.8 | 1.7 | 3.0 | 3.3 | 2.7 | 2.4 | 2.0 | 1.7 | 0.5 | 0.5 | 19.5 |
1996–2025 normals for Walworth County — the climate division Mobridge sits in. All-time county record high 109.9°F (2006-07-16); record low -36.3°F (1967-12-31). Source: NOAA / National Weather Service.