The official National Weather Service forecast for Mountain View — 37.386°N, 122.0838°W, 3.6 miles from I-280. Forecasts here are written by NWS MTR, this county’s forecast office.
| Santa Clara County | J | F | M | A | M | J | J | A | S | O | N | D | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 57 | 59 | 63 | 67 | 73 | 80 | 84 | 84 | 82 | 75 | 64 | 57 | 70 |
| Avg low °F | 39 | 40 | 42 | 44 | 48 | 53 | 58 | 58 | 56 | 50 | 43 | 39 | 48 |
| Precip in | 4.6 | 4.4 | 3.5 | 1.7 | 0.7 | 0.1 | 0.0 | 0.0 | 0.1 | 1.1 | 2.4 | 5.0 | 23.6 |
1996–2025 normals for Santa Clara County — the climate division Mountain View sits in. All-time county record high 108.4°F (2020-09-07); record low 13.8°F (1990-12-22). Source: NOAA / National Weather Service.