The official National Weather Service forecast for Avinger — 32.8999°N, 94.5563°W, 28.8 miles from I-20. Forecasts here are written by NWS SHV, this county’s forecast office.
| Cass County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 56 | 60 | 69 | 76 | 83 | 90 | 93 | 94 | 88 | 78 | 67 | 58 | 76 |
| Avg low °F | 35 | 39 | 46 | 53 | 62 | 70 | 73 | 72 | 65 | 54 | 45 | 38 | 54 |
| Precip in | 4.0 | 4.3 | 4.9 | 4.7 | 5.2 | 4.2 | 3.5 | 3.0 | 3.7 | 4.2 | 4.1 | 4.6 | 50.4 |
1996–2025 normals for Cass County — the climate division Avinger sits in. All-time county record high 108.9°F (2011-08-04); record low -4.7°F (1951-02-02). Source: NOAA / National Weather Service.