The official National Weather Service forecast for Hardeeville — 32.2871°N, 81.0807°W, 0.7 miles from I-95. Forecasts here are written by NWS CHS, this county’s forecast office.
| Jasper County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 61 | 65 | 71 | 78 | 84 | 89 | 92 | 90 | 86 | 78 | 70 | 63 | 77 |
| Avg low °F | 38 | 41 | 47 | 53 | 62 | 69 | 72 | 72 | 67 | 56 | 46 | 41 | 55 |
| Precip in | 3.1 | 3.4 | 3.4 | 3.1 | 3.5 | 5.3 | 5.9 | 6.2 | 4.4 | 3.1 | 2.4 | 3.4 | 47.2 |
1996–2025 normals for Jasper County — the climate division Hardeeville sits in. All-time county record high 103.8°F (1986-07-20); record low 2.6°F (1985-01-21). Source: NOAA / National Weather Service.