United States · 1991–2020 normal
Rockville in
September.
Typical September weather in Rockville: 22.3°C by day, 12.3°C at night, 114 mm of rain over 7.9 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high22.3°C
Typical low12.3°C
Rain114 mm
Wet days7.9
Comfort score 74 this month (June leads the year at 82). Daylight is calculated as 12 h 26 from latitude 41.87°.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4841628
- NOAA station
- USC00068138 · STORRS
- Station distance
- 20 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.