The official National Weather Service forecast for Guyton — 32.3363°N, 81.3915°W, 11.4 miles from I-16. Forecasts here are written by NWS CHS, this county’s forecast office.
| Effingham County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 61 | 66 | 72 | 78 | 85 | 90 | 92 | 91 | 86 | 79 | 70 | 64 | 78 |
| Avg low °F | 37 | 41 | 47 | 53 | 61 | 69 | 72 | 72 | 66 | 56 | 46 | 40 | 55 |
| Precip in | 3.2 | 3.5 | 3.5 | 3.2 | 3.6 | 5.4 | 5.8 | 5.8 | 4.2 | 2.7 | 2.4 | 3.4 | 46.7 |
1996–2025 normals for Effingham County — the climate division Guyton sits in. All-time county record high 104.5°F (1986-07-20); record low 0.6°F (1985-01-21). Source: NOAA / National Weather Service.