Climate and monthly weather forecast
Olean, NY

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Weather in January

January, like December, is another subzero cold winter month in Olean, New York, with an average temperature ranging between max 27.9°F (-2.3°C) and min 15.8°F (-9°C). January is the coldest month, with the temperature often reaching an average high of 27.9°F (-2.3°C) and an average low of 15.8°F (-9°C). Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Olean, New York, with an average temperature fluctuating between 30.7°F (-0.7°C) and 17.6°F (-8°C). An average high-temperature of a still freezing cold 30.7°F (-0.7°C) marks February, exhibiting a close resemblance to the conditions in January. Weather in February »

Weather in March

The first month of the spring, March, is an icy month in Olean, New York, with an average temperature ranging between max 40.1°F (4.5°C) and min 24.4°F (-4.2°C). March's arrival coincides with a temperature rise, moving from February's freezing cold 30.7°F (-0.7°C) to a cold 40.1°F (4.5°C). Weather in March »

Weather in April

April is a cool spring month in Olean, New York, with temperature in the range of an average high of 52.5°F (11.4°C) and an average low of 34.3°F (1.3°C). An escalation in the average high-temperature is seen with the onset of April, moving from a cold 40.1°F (4.5°C) in March to a fresh 52.5°F (11.4°C). Weather in April »

Weather in May

May, the last month of the spring in Olean, is a refreshing month, with an average temperature varying between 45.1°F (7.3°C) and 66°F (18.9°C). A rise in the average high-temperature is observed during May, moving from a cool 52.5°F (11.4°C) in April to an enjoyable 66°F (18.9°C). Weather in May »

Weather in June

June, the first month of the summer in Olean, is a pleasant month, with an average temperature ranging between max 73°F (22.8°C) and min 51.8°F (11°C). June witnesses a subtle temperature ascent, adjusting from an enjoyable 66°F (18.9°C) in May to an agreeable 73°F (22.8°C). Weather in June »

Weather in July

July is a warm summer month in Olean, New York, with an average temperature ranging between max 78.4°F (25.8°C) and min 55.9°F (13.3°C). Olean's warmest weather arrives in July, when temperatures average a high of 78.4°F (25.8°C) and a low of 55.9°F (13.3°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Olean, New York, with temperature in the range of an average low of 54.5°F (12.5°C) and an average high of 76.3°F (24.6°C). August brings a marginal elevation to a still moderately hot 76.3°F (24.6°C) from July's 78.4°F (25.8°C) in Olean's average high-temperatures. Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in Olean, New York, with an average temperature fluctuating between 69.6°F (20.9°C) and 49.5°F (9.7°C). With the arrival of September, Olean experiences a modest decline in average high-temperatures, transitioning from a warm 76.3°F (24.6°C) in August to an agreeable 69.6°F (20.9°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Olean, New York, with an average temperature ranging between max 56.7°F (13.7°C) and min 41.2°F (5.1°C). The transition into October is accompanied by a temperature decrease, with the average high-temperature shifting from a pleasant 69.6°F (20.9°C) in September to a refreshing 56.7°F (13.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Olean, New York, with temperature in the range of an average low of 30°F (-1.1°C) and an average high of 43.5°F (6.4°C). November's onset brings a reduction in the average high-temperature, from a mild 56.7°F (13.7°C) in October to a frosty 43.5°F (6.4°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cold month in Olean, New York, with an average temperature varying between 23.9°F (-4.5°C) and 33.8°F (1°C). December brings a minor decrease, with the average high-temperature reducing from a chilly 43.5°F (6.4°C) in November to a wintry 33.8°F (1°C). Weather in December »
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Frequently asked questions

What time of the year is the coldest in Olean?

Olean, New York, experiences its lowest temperatures in January, with an average peak of 27.9°F (-2.3°C) and a low of 15.8°F (-9°C).

What are the most humid months in Olean?

January and February, with an average relative humidity of 89%, are most humid months in Olean.

How many days does it rain in Olean?

In Olean, during the entire year, the rain falls for 168.9 days and collects up to 30" (762mm) of precipitation.

When does it snow in Olean?

Months with snowfall in Olean are January through May, October through December.

How many days does it snow in Olean?

Throughout the year, in Olean, New York, there are 92.6 snowfall days, and 43.58" (1107mm) of snow is accumulated.

What is the month with the least sunshine in Olean?

The month with the least sunshine in Olean is January, with an average of 2.3h of sunshine.

What is the month with the lowest UV index in Olean?

The months with the lowest UV index in Olean are January, February and December, with an average maximum UV index of 1.

What is the snowiest month in Olean?

February is the month with the most snowfall in Olean. Snow falls for 19 days and accumulates 10.63" (270mm) of snow.

When is Daylight Saving Time (DST) in Olean?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Olean, New York, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What is the wettest month in Olean?

The month with the most rainfall is April, when the rain falls for 16.6 days and typically aggregates up to 3.35" (85mm) of precipitation.

What are the least humid months in Olean?

The months with the lowest humidity are May through July, with an average relative humidity of 79%.

When is the highest UV index in Olean?

The months with the highest UV index in Olean are May through August, with an average maximum UV index of 5.

When it does not snow in Olean?

In Olean, New York, snow does not fall in June through September.

When are the longest days in Olean?

With an average of 15h and 12min of daylight, June has the longest days of the year.

What is the hottest time of year in Olean?

July is the month when Olean experiences its warmest temperatures, averaging a high of 78.4°F (25.8°C) and a low of 55.9°F (13.3°C).

What month has the most sunshine in Olean?

July has the most sunshine of the year in Olean, New York, with an average of 9.4h of sunshine.

What is the driest month in Olean?

September is the month with the least rainfall in Olean. Rain falls for 15.4 days and accumulates 1.93" (49mm) of precipitation.

What is the month with the shortest days in Olean?

With an average of 9h and 12min of daylight, December has the shortest days of the year in Olean, New York.

Average pressure
Olean, NY

Average pressure - Olean, NY

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed
Olean, NY

Average wind speed - Olean, NY

The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity
Olean, NY

Average humidity - Olean, NY

The months with the highest relative humidity are January and February (89%).
The months with the lowest relative humidity are May, June and July (79%).

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Average rainfall
Olean, NY

Average rainfall - Olean, NY

The wettest month (with the highest rainfall) is April (3.35").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days
Olean, NY

Average rainfall days - Olean, NY

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (6.8 days).

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Average snowfall
Olean, NY

Average snowfall - Olean, NY

The month with the highest snowfall is February (10.63").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Olean, NY

Average snowfall days - Olean, NY

The month with the highest number of snowfall days is January (20.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Olean, NY

Average daylight / Average sunshine - Olean, NY

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).

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Average sunshine days
Olean, NY

Average sunshine days - Olean, NY

The month with the most sunshine days is September (12.4 days).
The month with the least sunshine days is February (5.9 days).

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Average UV index
Olean, NY

Average UV index - Olean, NY

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).

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Average visibility
Olean, NY

Average visibility - Olean, NY

The months with the highest visibility are March, April, May, June, July, October and November (5mi).
The months with the lowest visibility are January, February, August, September and December (4mi).

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Olean, New York, USA

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