The official National Weather Service forecast for Arlington — 44.3644°N, 97.1331°W, 21.9 miles from I-29.
| Kingsbury County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 24 | 29 | 41 | 56 | 68 | 79 | 84 | 81 | 74 | 59 | 43 | 28 | 56 |
| Avg low °F | 5 | 8 | 21 | 33 | 45 | 56 | 61 | 58 | 50 | 36 | 22 | 11 | 34 |
| Precip in | 0.5 | 0.7 | 1.2 | 2.4 | 3.3 | 3.7 | 3.1 | 3.3 | 2.5 | 2.3 | 0.9 | 0.8 | 24.7 |
1996–2025 normals for Kingsbury County — the climate division Arlington sits in. All-time county record high 104.5°F (1976-07-10); record low -35.3°F (1994-02-09). Source: NOAA / National Weather Service.