The official National Weather Service forecast for Hampton — 42.7419°N, 93.2024°W, 9.1 miles from I-35.
| Franklin County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 26 | 30 | 44 | 59 | 70 | 80 | 83 | 80 | 75 | 62 | 46 | 31 | 57 |
| Avg low °F | 9 | 13 | 25 | 36 | 47 | 58 | 62 | 59 | 51 | 39 | 27 | 15 | 37 |
| Precip in | 0.9 | 1.1 | 2.0 | 3.8 | 5.0 | 5.6 | 4.3 | 4.0 | 3.1 | 2.6 | 1.6 | 1.3 | 35.3 |
1996–2025 normals for Franklin County — the climate division Hampton sits in. All-time county record high 102.6°F (1988-08-16); record low -29.1°F (1996-02-03). Source: NOAA / National Weather Service.