The official National Weather Service forecast for Kimball — 43.7467°N, 98.9584°W, 8.2 miles from I-90.
| Brule County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 30 | 34 | 47 | 59 | 70 | 81 | 88 | 85 | 78 | 62 | 47 | 33 | 60 |
| Avg low °F | 10 | 13 | 23 | 34 | 46 | 57 | 62 | 60 | 51 | 37 | 24 | 14 | 36 |
| Precip in | 0.5 | 0.6 | 1.0 | 2.5 | 3.3 | 3.8 | 2.7 | 2.9 | 2.3 | 1.8 | 0.7 | 0.7 | 22.8 |
1996–2025 normals for Brule County — the climate division Kimball sits in. All-time county record high 110.5°F (2006-07-16); record low -34.1°F (1966-01-29). Source: NOAA / National Weather Service.