Harrisburg Weather in September

Thinking of visiting Harrisburg in September? Expect high temperatures reaching 25°C (77°F) during the day, dropping to 14°C (57°F) at night, and note that quite a bit of rainfall is likely.

Rainfall in Harrisburg in September

Historically, the month has about 9 days of rain, averaging 122 mm (4.8 in) in total. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Harrisburg in September

September in Harrisburg brings typical temperatures with highs around 25°C (77°F) and lows of 14°C (57°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 14°C (57°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Harrisburg in September

With approximately 226 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Harrisburg.

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Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Harrisburg's climate page.

Harrisburg Temperature in September

Min Temperature 14°C (57°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 30%  

Precipitation 122 mm (4.8 in)  

Rainy days 9 days  

Humidity 73%  

Sunshine 226 hours  

Percentage Sunshine 61%  

What to Wear in Harrisburg in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Harrisburg in September

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

Swimming

9/10

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Harrisburg's climate page.

More climate data for Harrisburg

Temperature Rainfall Sunshine Humidity

See the full Harrisburg climate overview or explore weather in the United States of America.