The official National Weather Service forecast for Plankinton — 43.7156°N, 98.4851°W, 8.1 miles from I-90.
| Aurora County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 29 | 33 | 46 | 59 | 70 | 81 | 87 | 84 | 77 | 62 | 47 | 33 | 59 |
| Avg low °F | 9 | 12 | 23 | 34 | 45 | 57 | 62 | 60 | 51 | 37 | 24 | 13 | 36 |
| Precip in | 0.6 | 0.7 | 1.1 | 2.7 | 3.3 | 3.8 | 2.6 | 2.8 | 2.5 | 2.0 | 0.7 | 0.8 | 23.6 |
1996–2025 normals for Aurora County — the climate division Plankinton sits in. All-time county record high 109.6°F (2006-07-16); record low -34.3°F (1966-01-29). Source: NOAA / National Weather Service.