Mercer weather in September (Pennsylvania, United States of America)

Curious about the climate in Mercer this September? Thinking about a visit? Explore this page for a full overview of the weather conditions this month.

Temperatures

For September, the weather in Mercer is generally perfect, featuring high temperatures and moderate rainfall. Daytime temperatures generally settle around 24°C, while nighttime can see a dip to about 11°C.

Precipitation

Mercer in September usually receives moderate rainfall, averaging around 95 mm for the month. Typically around 11 days days of rainfall are expected.

So this is a great month to visit if you prefer dry days with pleasant temperatures. September typically offers the most optimal weather. In contrast, January, February, March, November and December tend to have less optimal conditions.

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

 

Mercer, monthly averages in September

Min Temperature 11°C  

Max Temperature 24°C  

Chance of Rain 38%  

Precipitation 95 mm  

Rainy days 11 days  

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?

For visitors traveling to Mercer, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

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

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Interested in more climate information?

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

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.