United States · 1991–2020 normal
Portola Valley in
May.
Typical May weather in Portola Valley: 26.1°C by day, 8°C at night, 19 mm of rain over 2.8 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high26.1°C
Typical low8°C
Rain19 mm
Wet days2.8
Comfort score 81 this month, the highest of the year. Daylight is calculated as 14 h 09 from latitude 37.38°. Open-water sea temperature is 12.2°C (12 km from the place centre).
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5384478
- NOAA station
- USC00049792 · WOODSIDE FIRE STN 1
- Station distance
- 5.3 km from the place centre
- Coverage
- Good coverage · 23 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.