The official National Weather Service forecast for Clark — 44.8777°N, 97.7331°W, 33.1 miles from I-29.
| Clark County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 22 | 27 | 40 | 55 | 67 | 78 | 83 | 81 | 74 | 58 | 42 | 27 | 54 |
| Avg low °F | 4 | 7 | 20 | 32 | 44 | 56 | 61 | 58 | 50 | 36 | 22 | 10 | 33 |
| Precip in | 0.5 | 0.6 | 1.0 | 2.2 | 3.3 | 3.5 | 3.2 | 3.1 | 2.4 | 2.3 | 0.8 | 0.8 | 23.7 |
1996–2025 normals for Clark County — the climate division Clark sits in. All-time county record high 104.4°F (2006-07-16); record low -38.3°F (1994-02-09). Source: NOAA / National Weather Service.