The official National Weather Service forecast for Alexandria — 43.6536°N, 97.7828°W, 1.7 miles from I-90.
| Hanson County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 27 | 32 | 45 | 59 | 71 | 81 | 86 | 83 | 77 | 62 | 46 | 31 | 58 |
| Avg low °F | 8 | 11 | 23 | 34 | 46 | 58 | 62 | 60 | 51 | 37 | 23 | 13 | 36 |
| Precip in | 0.5 | 0.8 | 1.2 | 2.6 | 3.4 | 3.9 | 2.8 | 2.9 | 2.6 | 2.1 | 0.9 | 0.9 | 24.6 |
1996–2025 normals for Hanson County — the climate division Alexandria sits in. All-time county record high 106.0°F (1988-06-22); record low -34.9°F (1970-01-19). Source: NOAA / National Weather Service.