Climate and monthly weather forecast
Olean, MO

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Weather in January

January, like December, in Olean, Missouri, is another cold winter month, with temperature in the range of an average high of 38.8°F (3.8°C) and an average low of 24.3°F (-4.3°C). Olean witnesses the coldest weather in January, with temperatures averaging a high of 38.8°F (3.8°C) and a low of 24.3°F (-4.3°C). Weather in January »

Weather in February

February, the last month of the winter in Olean, is a chilly month, with an average temperature fluctuating between 43.2°F (6.2°C) and 27.9°F (-2.3°C). In Olean, February's average high-temperature stands at a chilly 43.2°F (6.2°C), closely related to the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Olean, is a cool month, with an average temperature varying between 55.2°F (12.9°C) and 37.9°F (3.3°C). In Olean, the average high-temperature in March increases from a frosty 43.2°F (6.2°C) in February to a fresh 55.2°F (12.9°C). Weather in March »

Weather in April

April in Olean, Missouri, is an enjoyable spring month, with an average temperature varying between 46.8°F (8.2°C) and 66.2°F (19°C). In Olean, the average high-temperature in April increases from a cool 55.2°F (12.9°C) in March to a refreshing 66.2°F (19°C). Weather in April »

Weather in May

The last month of the spring, May, is a moderately hot month in Olean, Missouri, with temperature in the range of an average low of 55.9°F (13.3°C) and an average high of 75.9°F (24.4°C). The commencement of May sees a shift in the average high-temperature, moving from a refreshing 66.2°F (19°C) in April to a moderately hot 75.9°F (24.4°C). Weather in May »

Weather in June

June, the first month of the summer in Olean, is a hot month, with an average temperature ranging between min 65.5°F (18.6°C) and max 86.5°F (30.3°C). June brings an increase in the average high-temperature, progressing from a warm 75.9°F (24.4°C) in May to a hot 86.5°F (30.3°C). Weather in June »

Weather in July

July, like June, is another tropical summer month in Olean, Missouri, with temperature in the range of an average low of 68°F (20°C) and an average high of 88.9°F (31.6°C). July temperatures tend to peak at an average high of 88.9°F (31.6°C) and dip to a low of 68°F (20°C). The average heat index in July is estimated at a blistering 105.8°F (41°C). Weather in July »

Weather in August

The last month of the summer, August, is another hot month in Olean, Missouri, with an average temperature varying between 65.7°F (18.7°C) and 87.1°F (30.6°C). The onset of August notes an average high-temperature of a still tropical 87.1°F (30.6°C), subtly shifted from July's 88.9°F (31.6°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Olean, Missouri, with temperature in the range of an average high of 79.9°F (26.6°C) and an average low of 59.5°F (15.3°C). With the arrival of September, Olean experiences a modest decline in average high-temperatures, transitioning from a hot 87.1°F (30.6°C) in August to a warm 79.9°F (26.6°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Olean, Missouri, with an average temperature varying between 48°F (8.9°C) and 65.7°F (18.7°C). October brings a drop in Olean's average high-temperature, falling from a warm 79.9°F (26.6°C) in September to a comfortable 65.7°F (18.7°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in Olean, Missouri, with an average temperature varying between 36.9°F (2.7°C) and 53.8°F (12.1°C). During the transition into November, Olean observes a decrease in the average high-temperature, falling from an enjoyable 65.7°F (18.7°C) in October to a cool 53.8°F (12.1°C). Weather in November »

Weather in December

December, the first month of the winter in Olean, is still a chilly month, with an average temperature varying between 29.3°F (-1.5°C) and 43.2°F (6.2°C). December's arrival correlates with a reduction in the average high-temperature, down from a cool 53.8°F (12.1°C) in November to a frosty 43.2°F (6.2°C). Weather in December »
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Frequently asked questions

What are the coldest months in Olean?

The coldest month in Olean, Missouri, is January, with an average high-temperature of 38.8°F (3.8°C) and an average low-temperature of 24.3°F (-4.3°C).

What is the driest month in Olean?

The month with the least rainfall in Olean is January, when the rain falls for 6.7 days and typically collects 1.18" (30mm) of precipitation.

How many days does it rain in Olean?

Throughout the year, in Olean, there are 136.9 rainfall days, and 26.02" (661mm) of precipitation is accumulated.

When does it snow in Olean?

Months with snowfall are January through May, November and December.

How much does it snow in Olean?

In Olean, during the entire year, snow falls for 23.1 days and aggregates up to 8.03" (204mm) of snow.

What is the month with the least sunshine in Olean?

January and February, with an average of 4.9h of sunshine, are months with the least sunshine.

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

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the snowiest month in Olean?

February is the month with the most snowfall. Snow falls for 7 days and accumulates 2.8" (71mm) 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, Missouri, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.

What is the most humid month in Olean?

The most humid month is May, with an average relative humidity of 77%.

What is the wettest month in Olean?

The month with the most rainfall is May, when the rain falls for 16.3 days and typically aggregates up to 3.58" (91mm) of precipitation.

When it does not snow in Olean?

In Olean, Missouri, snow does not fall in June through October.

When are the longest days in Olean?

With an average of 14h and 48min of daylight, June has the longest days of the year.

What month has the most sunshine in Olean?

With an average of 10.5h of sunshine, June has the most sunshine of the year in Olean.

What are the months with the highest UV index in Olean?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

What are the warmest months in Olean?

July, marked by an average high-temperature of 88.9°F (31.6°C) and a low-temperature of 68°F (20°C), is the warmest month in Olean.

What are the least humid months in Olean?

The months with the lowest humidity in Olean, Missouri, are August and October, with an average relative humidity of 73%.

What is the month with the shortest days in Olean?

December has the shortest days of the year in Olean, Missouri, with an average of 9h and 30min of daylight.

Average pressure
Olean, MO

Average pressure - Olean, MO

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed
Olean, MO

Average wind speed - Olean, MO

The windiest months (with the highest average wind speed) are January and March (8.9mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).

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Average humidity
Olean, MO

Average humidity - Olean, MO

The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are August and October (73%).

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Average rainfall
Olean, MO

Average rainfall - Olean, MO

The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is January (1.18").

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Average rainfall days
Olean, MO

Average rainfall days - Olean, MO

The month with the highest number of rainy days is May (16.3 days).
The months with the least rainy days are January and December (6.7 days).

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Average snowfall
Olean, MO

Average snowfall - Olean, MO

The month with the highest snowfall is February (2.8").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
Olean, MO

Average snowfall days - Olean, MO

The month with the highest number of snowfall days is February (7 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, MO

Average daylight / Average sunshine - Olean, MO

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 54min).

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Average sunshine days
Olean, MO

Average sunshine days - Olean, MO

The month with the most sunshine days is December (19.6 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index
Olean, MO

Average UV index - Olean, MO

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average visibility
Olean, MO

Average visibility - Olean, MO

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Olean, Missouri, USA

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