The official National Weather Service forecast for Loretto — 35.0779°N, 87.4397°W, 31.4 miles from I-65.
| Lawrence County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 49 | 54 | 63 | 72 | 79 | 86 | 89 | 88 | 83 | 73 | 61 | 52 | 71 |
| Avg low °F | 29 | 32 | 39 | 46 | 55 | 63 | 67 | 65 | 59 | 47 | 37 | 32 | 48 |
| Precip in | 5.3 | 5.7 | 5.6 | 5.2 | 4.8 | 4.5 | 4.6 | 3.9 | 4.0 | 3.9 | 3.9 | 6.0 | 57.4 |
1996–2025 normals for Lawrence County — the climate division Loretto sits in. All-time county record high 105.8°F (1952-07-29); record low -17.2°F (1985-01-21). Source: NOAA / National Weather Service.