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Weather & Climate

Olean, New York, United States

Overview

Climate data and monthly weather averages for Olean.

Key Metrics

Annual Avg
7.3°C
Summer Avg
19°C
Winter Avg
-4.7°C
Record High
34.8°C
Record Low
-26.4°C
Annual Precipitation
1049.5 mm
Avg Humidity
83%
Summer Humidity
77%
Winter Humidity
91%

Monthly Averages

MonthHigh (°C)Avg (°C)Low (°C)Rain (mm)Humidity (%)Sunshine (h)Wind (kph)
Jan14.8°-6°-24.2°67.392%4334.7
Feb17.9°-5.3°-26.4°58.891%5938.9
Mar22.6°-0.6°-20.4°70.186%10132.3
Apr25.8°6.1°-10.8°83.780%13331.6
May34.4°12.8°-5.2°99.879%16726.5
Jun32.5°17.4°1.5°100.880%17620
Jul34.8°20°5.7°110.477%18321.5
Aug34.8°19.5°6.3°97.675%16216.8
Sep33.3°15.9°0.6°96.975%12420.2
Oct29.1°8.8°-6°105.181%7825.2
Nov21.7°2.5°-22.2°7586%4930.7
Dec18.3°-2.8°-19.8°8491%3432.2

Frequently Asked Questions

Sources: NASA POWER · Last updated: 2025

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