United States · 1991–2020 normal
Sunnyvale in
September.
Typical September weather in Sunnyvale: 32°C by day, 21.2°C at night, 79 mm of rain over 4.6 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high32°C
Typical low21.2°C
Rain79 mm
Wet days4.6
Comfort score 55 this month (April leads the year at 85). Daylight is calculated as 12 h 20 from latitude 32.80°.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4735013
- NOAA station
- USW00013960 · DALLAS FAA AP
- Station distance
- 26.1 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.