United States · 1991–2020 normal
Portsmouth in
September.
Typical September weather in Portsmouth: 22.9°C by day, 11.1°C at night, 102 mm of rain over 7.5 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high22.9°C
Typical low11.1°C
Rain102 mm
Wet days7.5
Comfort score 76 this month (August leads the year at 78). Daylight is calculated as 12 h 26 from latitude 43.08°. Open-water sea temperature is 16.4°C (12 km from the place centre).
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5091383
- NOAA station
- USC00273626 · GREENLAND
- Station distance
- 8.3 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.