Olean Weather in September

September is one of the excellent months to visit Olean, with daytime temperatures of 22°C (72°F) and lows of 9°C (48°F) at night. Do note that quite a bit of rainfall is typical, averaging around 93 mm (3.7 in).

Rainfall in Olean in September

On average, there are about 13 days with rain during this month, averaging 93 mm (3.7 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Olean in September

Olean has excellent weather in September, with days reaching 22°C (72°F) and nights cooling to 9°C (48°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights fall to 9°C (48°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Olean.

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

Olean Temperature in September

Min Temperature 9°C (48°F)  

Max Temperature 22°C (72°F)  

Chance of Rain 43%  

Precipitation 93 mm (3.7 in)  

Rainy days 13 days  

What to Wear in Olean in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes.

What To Do in Olean in September

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

Cycling

9/10

Walking

9/10

Camping

4/10

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 Olean's climate page.

More climate data for Olean

Temperature Rainfall

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