See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
21°
Clear
Feels Like: 18°
Min: 7°
Max: 22°
The next few hours will be clear, with today reaching 22°C and dropping to 16°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:00
Sunrise
19:16
Sunset
Moon
Waxing Crescent
11:54
Moonrise
20:44
Moonset
Daily Forecast
Today
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
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Weather in Olean today, September 15, 2026
Olean starts September 15, 2026 under largely sunny skies, with bright spells setting the tone from the outset. Outdoor plans should enjoy long stretches of open sky as the day unfolds.
Temperatures climb from an overnight low near 7°C toward a daytime high of about 22°C. Moisture in the air spans 54%-82%, with the highest values around 20:00. Airflow remains manageable, reaching about 4.4 km/h around 14:00.
Afternoon skies stay clogged, peaking close to 86% near 21:00. The grey theme continues rather than clearing out. Expect visibility around 16.1 km. Sunrise is at 07:00 and sunset at 19:16, giving 12 hours 16 minutes of sunlight today.
Taken together, settled sunshine in Olean on September 15, 2026 makes outdoor timing easier, with highs near 22°C.
Frequently asked questions about weather in Olean
How warm does it get in Olean?
The warmest month in Olean is July, with average high temperatures of 26°C. The average temperature during this period is around 21°C.
How cold does it get in Olean?
The coldest month in Olean is January, with average low temperatures of -7°C. The average temperature during this period is around -4°C.
What is the wettest time of year in Olean?
The wettest month in Olean is April, with an average of 116mm of precipitation.
What is the driest time of year in Olean?
The driest month in Olean is November, with an average of 83mm of precipitation.
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