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Olean (NY) Weather and Climate: A Comprehensive Guide

Olean experiences great temperature shifts. The city's weather can transition from warm days to very cold weather. It also has a relatively rain/snowy climate with high levels of precipitation. Let’s explore the climate details in depth to provide you with a complete overview.

Average maximum day and minimum night temperature

The climate in Olean is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 26°C in July to a very cold -1°C in February.

Nighttime temperatures can drop, with average lows reaching -11°C in February. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Olean has a notably wet climate with abundant precipitation, recording 1047 mm of rain/snowfall per year. The amount of precipitation varies moderately throughout the year. The wettest month, August, sees around 110 mm of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, February, still receives a respectable 58 mm of snowfall.

The mean monthly precipitation over the year, including rain, hail and snow

Forecast for Olean (NY)

Sun   Dec 22
-11°C | -16°C
N 1 m/s
partly cloudy and no rain

partly cloudy and no rain

Mon   Dec 23
-2°C | -14°C
S 3 m/s
overcast and no rain

overcast and no rain

Tue   Dec 24
0°C | -3°C
W 2 m/s
6 mm
overcast and sleet

overcast and sleet

The best time of year to visit Olean in the United States of America

During the months of May, June, August and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is winter in Olean?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Olean?
    July has an average maximum temperature of 26°C and is the warmest month of the year.
  • Which is the coldest month in Olean?
    The coldest month is February with an average maximum temperature of -1°C.
  • Which is the wettest month in Olean?
    August tops the wettest month list with 110 mm of rainfall.
  • Which is the driest month in Olean?
    February is the driest month with 58 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.