The official National Weather Service forecast for Sibley — 43.3991°N, 95.752°W, 32.5 miles from I-90.
| Osceola County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 24 | 29 | 42 | 57 | 69 | 80 | 84 | 81 | 75 | 60 | 44 | 29 | 56 |
| Avg low °F | 7 | 10 | 23 | 34 | 47 | 58 | 62 | 59 | 51 | 38 | 24 | 13 | 36 |
| Precip in | 0.8 | 0.8 | 1.6 | 3.0 | 4.1 | 4.7 | 3.5 | 3.4 | 3.0 | 2.5 | 1.3 | 1.1 | 29.8 |
1996–2025 normals for Osceola County — the climate division Sibley sits in. All-time county record high 101.8°F (1988-06-22); record low -31.1°F (1970-01-19). Source: NOAA / National Weather Service.