The official National Weather Service forecast for Avoca — 41.4767°N, 95.338°W, 9.6 miles from I-80.
| Pottawattamie County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 32 | 36 | 50 | 63 | 73 | 83 | 86 | 84 | 78 | 65 | 50 | 36 | 61 |
| Avg low °F | 14 | 17 | 29 | 39 | 50 | 61 | 65 | 62 | 54 | 41 | 29 | 18 | 40 |
| Precip in | 0.8 | 1.0 | 1.9 | 3.3 | 5.0 | 4.9 | 3.6 | 4.4 | 3.1 | 2.7 | 1.4 | 1.2 | 33.3 |
1996–2025 normals for Pottawattamie County — the climate division Avoca sits in. All-time county record high 104.0°F (1955-07-31); record low -27.2°F (1974-01-12). Source: NOAA / National Weather Service.