Fairfax weather in September (Virginia, United States of America)

Can you expect sunny skies in Fairfax in September? Find all the essential weather information for this month in our guide.

Temperatures

In September, Fairfax typically experiences high temperatures and high rainfall. Expect temperatures to climb to 26°C during the day, with nighttime readings dropping to 15°C.

Precipitation

Fairfax in September usually receives high rainfall, averaging around 124 mm for the month. According to historical climate patterns, there are usually around 9 days days of rain.

Average sunshine

Enjoy a sunny month with about 225 hours of sunshine, providing a cheerful and lively atmosphere.

Should you favor a climate that's both dry and comfortably warm August typically offers the most agreeable circumstances. On the other hand, January, February and December tend to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized Fairfax climate page with graphs.

 

Fairfax, monthly averages in September

Min Temperature 15°C  

Max Temperature 26°C  

Chance of Rain 30%  

Precipitation 124 mm  

Rainy days 9 days  

Humidity 68% *  

Windspeed 14 km/h *  

Sunshine 225 hours *  

Percentage Sunshine 60% *  

* Data from: Washington DC, the United States of America (23 KM, 14 Miles).

Where to go in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Fairfax.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.