The official National Weather Service forecast for Gilmer — 32.7287°N, 94.9424°W, population 5,084, 20.4 miles from I-20. Forecasts here are written by NWS SHV, this county’s forecast office.
| Upshur County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 57 | 61 | 69 | 76 | 83 | 90 | 94 | 94 | 88 | 78 | 67 | 59 | 76 |
| Avg low °F | 35 | 39 | 46 | 53 | 62 | 69 | 72 | 72 | 65 | 54 | 45 | 38 | 54 |
| Precip in | 3.7 | 4.0 | 4.6 | 4.5 | 5.0 | 4.0 | 3.0 | 3.1 | 3.4 | 4.3 | 3.9 | 4.2 | 47.7 |
1996–2025 normals for Upshur County — the climate division Gilmer sits in. All-time county record high 109.7°F (2011-08-04); record low -1.8°F (2021-02-16). Source: NOAA / National Weather Service.