Climate and monthly weather forecast
Helena, OK

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Weather in January

January, like December, is a frosty winter month in Helena, Oklahoma, with temperature in the range of an average low of 29.7°F (-1.3°C) and an average high of 46.4°F (8°C). January brings the lowest temperatures, with an average high of 46.4°F (8°C) and an average low of 29.7°F (-1.3°C). Weather in January »

Weather in February

February, the last month of the winter in Helena, is another chilly month, with an average temperature fluctuating between 32°F (0°C) and 49.5°F (9.7°C). In February, Helena experiences a minor shift in meteorological conditions with average high-temperatures marked at a still chilly 49.5°F (9.7°C), closely mirroring the climate in January. Weather in February »

Weather in March

The first month of the spring, March, is a refreshing month in Helena, Oklahoma, with an average temperature varying between 61.2°F (16.2°C) and 41.5°F (5.3°C). March signals a shift in the average high-temperature, moving from February's frosty 49.5°F (9.7°C) to a refreshing 61.2°F (16.2°C). Weather in March »

Weather in April

April is an agreeable spring month in Helena, Oklahoma, with temperature in the range of an average high of 69.4°F (20.8°C) and an average low of 48.7°F (9.3°C). Observing a slight rise in April, the average high-temperature shifts from March's refreshing 61.2°F (16.2°C) to an agreeable 69.4°F (20.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a moderately hot month in Helena, Oklahoma, with an average temperature varying between 58.8°F (14.9°C) and 78.6°F (25.9°C). As Helena transitions into May, the average high-temperature is observed to rise from an agreeable 69.4°F (20.8°C) in April to a warm 78.6°F (25.9°C). Weather in May »

Weather in June

The first month of the summer, June, is a tropical month in Helena, Oklahoma, with temperature in the range of an average high of 91.6°F (33.1°C) and an average low of 71.4°F (21.9°C). As June sets, the average high-temperature shows an increase, moving up from a warm 78.6°F (25.9°C) in May to a hot 91.6°F (33.1°C). Weather in June »

Weather in July

July is a fiery hot summer month in Helena, Oklahoma, with an average temperature fluctuating between 75.2°F (24°C) and 95.2°F (35.1°C). The average temperatures reach their apex in July, averaging 95.2°F (35.1°C) at the high end and 75.2°F (24°C) at the low end. The heat index in July is computed to be a scorching 109.4°F (43°C). Weather in July »

Weather in August

August, the last month of the summer in Helena, is another hot month, with temperature in the range of an average high of 93°F (33.9°C) and an average low of 72.9°F (22.7°C). The arrival of August coincides with an average high-temperature of a tropical 93°F (33.9°C), indicating a minimal shift from July's 95.2°F (35.1°C). Weather in August »

Weather in September

September, the first month of the autumn in Helena, is still a warm month, with an average temperature fluctuating between 66.4°F (19.1°C) and 84.9°F (29.4°C). As September begins, there is a minor decrease in the average high-temperature, softly falling from a hot 93°F (33.9°C) in August to a warm 84.9°F (29.4°C). Weather in September »

Weather in October

October, the same as September, in Helena, Oklahoma, is another pleasant autumn month, with an average temperature ranging between max 70°F (21.1°C) and min 52.3°F (11.3°C). As Helena welcomes October, there is a noticeable shift in the average high-temperature, dropping from September's warm 84.9°F (29.4°C) to an agreeable 70°F (21.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a moderate month in Helena, Oklahoma, with an average temperature fluctuating between 40.1°F (4.5°C) and 58.1°F (14.5°C). As November commences, the average high-temperature shows a reduction, transitioning from an agreeable 70°F (21.1°C) in October to a moderate 58.1°F (14.5°C). Weather in November »

Weather in December

The first month of the winter, December, is also a frosty month in Helena, Oklahoma, with an average temperature ranging between max 47.3°F (8.5°C) and min 31.1°F (-0.5°C). A moderate decline in the average high-temperature is seen during December, decreasing from a refreshing 58.1°F (14.5°C) in November to a chilly 47.3°F (8.5°C). Weather in December »
Updated: Feb 13, 2024 | Published by: Weather U.S. | Resources

Frequently asked questions

What is the coldest month in Helena?

In Helena, the lowest temperatures are generally noted in January, averaging a high of 46.4°F (8°C) and a low of 29.7°F (-1.3°C).

How much does it rain in Helena?

In Helena, Oklahoma, during the entire year, the rain falls for 103.1 days and collects up to 18.11" (460mm) of precipitation.

When does it snow in Helena?

January through May, October through December are months with snowfall.

How much does it snow in Helena?

In Helena, Oklahoma, during the entire year, snow falls for 8.7 days and aggregates up to 4.06" (103mm) of snow.

What is the driest month in Helena?

February is the month with the least rainfall in Helena, Oklahoma. Rain falls for 5.3 days and accumulates 0.51" (13mm) of precipitation.

When does it snow the most in Helena?

February is the month with the most snowfall in Helena. Snow falls for 2.7 days and accumulates 1.46" (37mm) of snow.

When is Daylight Saving Time (DST) in Helena?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Helena, Oklahoma, 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 Helena?

May is the most humid month, with an average relative humidity of 66%.

What is the rainiest month in Helena?

May is the month with the most rainfall in Helena, Oklahoma. Rain falls for 13.2 days and accumulates 3.5" (89mm) of precipitation.

When it does not snow in Helena?

In Helena, Oklahoma, snow does not fall in June through September.

When are the longest days in Helena?

The month with the longest days is June, with an average of 14h and 36min of daylight.

What month has the most sunshine in Helena?

The month with the most sunshine in Helena, Oklahoma, is June, with an average of 11.4h of sunshine.

When is the highest UV index in Helena?

June through August, with an average maximum UV index of 7, are months with the highest UV index in Helena.

What is the hottest time of year in Helena?

July is the month when Helena's temperatures reach their peak, with averages of 95.2°F (35.1°C) and lows of 75.2°F (24°C).

What is the least humid month in Helena?

With an average relative humidity of 54%, July is the least humid month.

What is the month with the shortest days in Helena?

With an average of 9h and 42min of daylight, December has the shortest days of the year in Helena, Oklahoma.

What is the month with the least sunshine in Helena?

The month with the least sunshine in Helena, Oklahoma, is December, with an average of 6.4h of sunshine.

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

With an average maximum UV index of 2, December is the month with the lowest UV index in Helena.

Average temperature
Helena, OK

Average temperature - Helena, OK

The warmest month (with the highest average high temperature) is July (95.2°F).
The month with the lowest average high temperature is January (46.4°F).

The month with the highest average low temperature is July (75.2°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

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Average pressure
Helena, OK

Average pressure - Helena, OK

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed
Helena, OK

Average wind speed - Helena, OK

The windiest month (with the highest average wind speed) is April (11.8mph).
The calmest month (with the lowest average wind speed) is August (8.8mph).

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Average rainfall
Helena, OK

Average rainfall - Helena, OK

The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is February (0.51").

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Average rainfall days
Helena, OK

Average rainfall days - Helena, OK

The month with the highest number of rainy days is May (13.2 days).
The month with the least rainy days is December (3.6 days).

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Average snowfall
Helena, OK

Average snowfall - Helena, OK

The month with the highest snowfall is February (1.46").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Helena, OK

Average snowfall days - Helena, OK

The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Helena, OK

Average daylight / Average sunshine - Helena, OK

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

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Average sunshine days
Helena, OK

Average sunshine days - Helena, OK

The month with the most sunshine days is January (25.5 days).
The month with the least sunshine days is May (15 days).

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Average visibility
Helena, OK

Average visibility - Helena, OK

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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Helena, Oklahoma, USA

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