The official National Weather Service forecast for Springfield — 42.8542°N, 97.8973°W, 56 miles from I-29.
| Bon Homme County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 30 | 35 | 48 | 60 | 72 | 82 | 87 | 84 | 78 | 63 | 48 | 34 | 60 |
| Avg low °F | 11 | 14 | 25 | 35 | 47 | 59 | 63 | 61 | 52 | 39 | 26 | 15 | 37 |
| Precip in | 0.6 | 0.7 | 1.4 | 2.8 | 3.7 | 4.0 | 2.7 | 3.2 | 2.7 | 2.3 | 1.0 | 0.9 | 26.0 |
1996–2025 normals for Bon Homme County — the climate division Springfield sits in. All-time county record high 107.6°F (1988-06-22); record low -29.8°F (1966-01-29). Source: NOAA / National Weather Service.