Sunnyvale, California Weather:
Tuesday, September 1, 2026
Sunny Weather
Day 75°
Night 59°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 8
Weather Forecast History
Last Year's Weather on This Day (September 1, 2025)
Night

Day

90°

Night

63°

Wind

5 mph

Precipitation

0 %