>
> Usa > Washington, District Of Columbia >September
Weather in September in Washington, District Of Columbia
| < September > | ||
|---|---|---|
| Normal Max/ High Temperature | 27°C (80°F) | |
| Average Temperature | 22°C (71°F) | |
| Min/ Low Temperature | 17°C (62°F) | |
| Average Sea or Water Temp | 25°C(77°F) | |
| Normal Precipitation | 84mm (3.3in) | |
| Number of Wet Days (probability of rain on a day) | 9 (30%) | |
| Average Sunlight per day | 07h 34' | |
| Average Daylight per day | 12h 23' | |
| Sunny (Cloudy) Daylight Hours | 62% (38%) | |
| Sun altitude at solar noon on the 21st day. | 51.7° | |
- The average sea tempeature is 25 °C (77 °F).
- The average temperature in Washington, District Of Columbia in September is really warm at 21.8 °C (71.24 °F).
- Afternoons can be hot with average high temperatures reaching 26.7 °C (80.1 °F).
- Overnight temperatures are generally very mild with an average low of 16.9 °C (62.4 °F).
- The mean daily temperature variation/ range in September is 9.8 °C (17.6 °F).
- Precipitation averages for September are high with 84.1mm (3.3 in) recorded across 9 days.
- The heavens above Washington, District Of Columbia are slightly sunny having on balance a welcome 7h 34' of brilliant solar radiation per day.
- The shortest day is 11h 46' long and the longest day is 13h 00' long with an average length of 12h 23'.
- There are approximately 4h 39' per day when the sun is occluded by cloud, haze, fog etc.
- It is sunny approximately 62% of daylight hours and cloudy 38% of daylight hours.
Weather Trend Graph for September in Washington, District Of Columbia, Usa
