The official National Weather Service forecast for Franklin — 40.0961°N, 98.9526°W, 39.8 miles from I-80.
| Franklin County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 38 | 42 | 54 | 65 | 74 | 85 | 90 | 87 | 81 | 67 | 54 | 41 | 65 |
| Avg low °F | 16 | 18 | 28 | 37 | 48 | 60 | 64 | 63 | 53 | 40 | 27 | 18 | 39 |
| Precip in | 0.5 | 0.7 | 1.4 | 2.3 | 4.1 | 3.6 | 3.6 | 3.4 | 2.1 | 2.0 | 1.0 | 0.7 | 25.4 |
1996–2025 normals for Franklin County — the climate division Franklin sits in. All-time county record high 109.9°F (1954-07-12); record low -30.5°F (1989-12-23). Source: NOAA / National Weather Service.