The official National Weather Service forecast for Riverbank — 37.736°N, 120.9355°W, 20.3 miles from I-5. Forecasts here are written by NWS STO, this county’s forecast office.
| Stanislaus County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 57 | 61 | 66 | 72 | 80 | 88 | 94 | 92 | 88 | 78 | 65 | 56 | 75 |
| Avg low °F | 39 | 41 | 43 | 46 | 52 | 58 | 62 | 61 | 58 | 51 | 43 | 39 | 49 |
| Precip in | 2.8 | 2.6 | 2.0 | 1.0 | 0.5 | 0.1 | 0.0 | 0.0 | 0.1 | 0.7 | 1.4 | 2.8 | 14.0 |
1996–2025 normals for Stanislaus County — the climate division Riverbank sits in. All-time county record high 110.7°F (2022-09-07); record low 16.9°F (1990-12-22). Source: NOAA / National Weather Service.