United States · 1991–2020 normal
Hillsborough in
September.
Typical September weather in Hillsborough: 23.3°C by day, 13.5°C at night, 2 mm of rain over 0.5 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high23.3°C
Typical low13.5°C
Rain2 mm
Wet days0.5
Comfort score 95 this month, the highest of the year. Daylight is calculated as 12 h 23 from latitude 37.57°. Open-water sea temperature is 14.9°C (22 km from the place centre).
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5357155
- NOAA station
- USW00023234 · SAN FRANCISCO INTL AP
- Station distance
- 5.2 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.