United States Weather in September


Check the Weather in the United States in September before you book your next holiday. This gives the best indication of the weather in September and includes figures for temperature, sunshine and rainfall. The september weather guide shown below is for Washington.

Max Daytime Temperature (°C) 26°C (79°F) Max Daytime Temperature in September in United States (Washington) 26°C (79°F) in September
Min Night-time Temperature (°C) 15°C (59°F) Min Night-time Temperature in September in United States (Washington) 15°C (59°F) in September
Hours of Sunshine (Daily) 7 Hours of Bright Sunshine per day (60% of Daylight Hours) in September in United States (Washington) 7 Hours per day in September
Hours of Daylight (Daily) 12 Hours of Daylight in September in United States (Washington) 12 Hours per day in September
Heat and Humidity Discomfort Low heat & humidity in September in United States (Washington) Low in September
Days with some Rainfall 7 Days with some Rainfall in September in United States (Washington) 7 Days in September
Monthly Rainfall (mm) 87 mm (3.4 inches) Monthly Rainfall in September in United States (Washington) 87 mm (3.4 inches) in September
UV Index (Maximum) UV (Maximum) Index 7 (High) in September in United States (Washington) 7 (High) in September
All Months Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Metric (°C)  |  Imperial (°F) 
When Best
Hire Cars
Top U.S.A. Destinations
   -  New York
   -  Florida
   -  Orlando
   -  Los Angeles
   -  More...
   -  Las Vegas
   -  San Francisco
   -  Boston
   -  Washington D.C.
On the Beach sale: up to 40% OFF holidays On the Beach sale: up to 40% OFF holidays
Save up to 40% on last minute beach holidays for winter 2014/2015 with On the Beach. Check out holidays to Sharm el Sheikh, Hurghada, Lanzarote and Costa del Sol. Bookings over £1,250 will receive a larger discount.

Map of United States

Select a destination from the United States Map to view the september weather guide. Alternatively, select from the list of destinations below the map. Can't find the United States weather destination you are after? Try the Destination Search.

Boston   Chicago   Las Vegas   Los Angeles   Miami   New York   Orlando  

Alabama   Alaska   Arizona   Arkansas   California   Colorado   Connecticut   D.C.   Delaware   Florida   Georgia   Hawaii   Idaho   Illinois   Indiana   Iowa   Kansas   Kentucky   Louisiana   Maine   Maryland   Massachusetts   Michigan   Minnesota   Mississippi   Missouri   Montana   Nebraska   Nevada   New Hampshire   New Jersey   New Mexico   New York   North Carolina   North Dakota   Ohio   Oklahoma   Oregon   Pennsylvania   Rhode Island   South Carolina   South Dakota   Tennessee   Texas   Utah   Vermont   Virginia   Washington   West Virginia   Wisconsin   Wyoming  

United States weather by month

Check the weather for a particular month in the United States by selecting a month from the list below. Alternatively check which month usually has the Best Weather in the United States. If you are not sure where to go, why not try our Holiday Planner.


Back to Top of Page