The official National Weather Service forecast for Topeka — 39.0483°N, 95.678°W, population 148,956, 1.4 miles from I-70.
| Shawnee County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 40 | 45 | 57 | 67 | 76 | 86 | 90 | 89 | 81 | 69 | 56 | 44 | 67 |
| Avg low °F | 19 | 22 | 33 | 43 | 54 | 64 | 68 | 66 | 57 | 45 | 33 | 23 | 44 |
| Precip in | 1.0 | 1.2 | 2.2 | 3.5 | 5.3 | 5.1 | 3.8 | 4.1 | 3.3 | 2.9 | 1.8 | 1.4 | 35.6 |
1996–2025 normals for Shawnee County — the climate division Topeka sits in. All-time county record high 109.8°F (1980-06-28); record low -23.0°F (1989-12-23). Source: NOAA / National Weather Service.