The official National Weather Service forecast for Alamo — 35.7848°N, 89.1173°W, 13.6 miles from I-40.
| Crockett County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 48 | 52 | 62 | 72 | 80 | 88 | 90 | 89 | 84 | 74 | 61 | 51 | 71 |
| Avg low °F | 29 | 33 | 40 | 48 | 59 | 67 | 70 | 68 | 61 | 49 | 39 | 33 | 50 |
| Precip in | 4.2 | 4.9 | 5.5 | 5.4 | 5.6 | 4.2 | 4.0 | 3.7 | 3.8 | 3.9 | 4.2 | 5.0 | 54.4 |
1996–2025 normals for Crockett County — the climate division Alamo sits in. All-time county record high 104.8°F (1952-07-28); record low -15.4°F (1951-02-02). Source: NOAA / National Weather Service.