The official National Weather Service forecast for Arlington — 35.2962°N, 89.6615°W, population 14,230, 1.9 miles from I-40.
| Shelby County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 50 | 54 | 64 | 73 | 81 | 89 | 91 | 91 | 85 | 75 | 62 | 53 | 72 |
| Avg low °F | 32 | 35 | 43 | 51 | 61 | 69 | 72 | 70 | 64 | 52 | 42 | 35 | 52 |
| Precip in | 4.4 | 4.8 | 6.0 | 5.8 | 5.7 | 4.3 | 4.4 | 3.3 | 3.7 | 4.1 | 4.2 | 5.3 | 56.0 |
1996–2025 normals for Shelby County — the climate division Arlington sits in. All-time county record high 105.5°F (1952-07-28); record low -6.8°F (1985-01-21). Source: NOAA / National Weather Service.