The official National Weather Service forecast for Junction City — 39.0286°N, 96.8314°W, population 40,723, 2.3 miles from I-70.
| Geary County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 40 | 45 | 57 | 67 | 76 | 86 | 91 | 89 | 82 | 69 | 56 | 44 | 67 |
| Avg low °F | 19 | 22 | 33 | 42 | 53 | 64 | 68 | 66 | 57 | 45 | 33 | 23 | 44 |
| Precip in | 0.8 | 1.1 | 2.0 | 3.2 | 4.9 | 4.7 | 4.0 | 4.1 | 2.8 | 2.5 | 1.6 | 1.2 | 32.9 |
1996–2025 normals for Geary County — the climate division Junction City sits in. All-time county record high 111.2°F (1954-07-14); record low -22.5°F (1989-12-23). Source: NOAA / National Weather Service.