The official National Weather Service forecast for Mooresville — 34.6264°N, 86.8806°W, 1.5 miles from I-65. Forecasts here are written by NWS HUN, this county’s forecast office.
| Limestone County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 51 | 55 | 64 | 73 | 80 | 87 | 90 | 89 | 84 | 74 | 63 | 54 | 72 |
| Avg low °F | 30 | 34 | 41 | 48 | 58 | 65 | 69 | 67 | 61 | 49 | 39 | 34 | 50 |
| Precip in | 5.4 | 5.3 | 5.5 | 5.3 | 4.8 | 4.2 | 4.9 | 3.8 | 3.7 | 3.5 | 4.1 | 5.9 | 56.4 |
1996–2025 normals for Limestone County — the climate division Mooresville sits in. All-time county record high 107.0°F (1952-07-29); record low -14.3°F (1966-01-30). Source: NOAA / National Weather Service.