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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is another chilly winter month in Helena, Oklahoma, with an average temperature ranging between min 29.7°F (-1.3°C) and max 46.4°F (8°C). Helena's coldest temperatures are experienced in January, with average high temperatures of 46.4°F (8°C) and lows 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 varying between 49.5°F (9.7°C) and 32°F (0°C). February commences with an average high-temperature of a still frosty 49.5°F (9.7°C), showing little deviation from January's 46.4°F (8°C). Weather in February »
Weather in March
March, the first month of the spring in Helena, is a refreshing month, with temperature in the range of an average high of 61.2°F (16.2°C) and an average low of 41.5°F (5.3°C). Helena experiences a temperature shift with the start of March, with average high-temperatures moving from a chilly 49.5°F (9.7°C) in February 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 low of 48.7°F (9.3°C) and an average high of 69.4°F (20.8°C). April's arrival signals a modest temperature shift, moving from an enjoyable 61.2°F (16.2°C) in March to an agreeable 69.4°F (20.8°C). Weather in April »
Weather in May
May, the last month of the spring in Helena, is a warm month, with an average temperature fluctuating between 58.8°F (14.9°C) and 78.6°F (25.9°C). Helena's May weather brings a rise in high-temperatures, moving from an agreeable 69.4°F (20.8°C) in April to a moderately hot 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 Helena welcomes June, the average high-temperature sees a rise, transitioning from a warm 78.6°F (25.9°C) in May to a tropical 91.6°F (33.1°C). Weather in June »
Weather in July
July is a sweltering summer month in Helena, Oklahoma, with temperature in the range of an average high of 95.2°F (35.1°C) and an average low of 75.2°F (24°C). July, having an average high-temperature of 95.2°F (35.1°C) and an average low-temperature of 75.2°F (24°C), is the warmest month. The heat index for July is appraised at a blisteringly hot 109.4°F (43°C). Weather in July »
Weather in August
August, the last month of the summer in Helena, is another tropical 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). August's average high-temperature is a tropical 93°F (33.9°C), maintaining a close comparison with July's 95.2°F (35.1°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Helena, Oklahoma, with an average temperature fluctuating between 66.4°F (19.1°C) and 84.9°F (29.4°C). September's arrival comes with a mild decrease in the average high-temperature, moving subtly from a hot 93°F (33.9°C) in August to a moderately hot 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 fluctuating between 70°F (21.1°C) and 52.3°F (11.3°C). October's onset witnesses a marked shift in the average high-temperature, moving from a warm 84.9°F (29.4°C) in September to an agreeable 70°F (21.1°C). Weather in October »
Weather in November
November, the last month of the autumn in Helena, is also a moderate month, with an average temperature ranging between min 40.1°F (4.5°C) and max 58.1°F (14.5°C). A shift in the average high-temperature occurs in November, reducing from an agreeable 70°F (21.1°C) in October to a mild 58.1°F (14.5°C). Weather in November »
Weather in December
The first month of the winter, December, is still a chilly month in Helena, Oklahoma, with temperature in the range of an average low of 31.1°F (-0.5°C) and an average high of 47.3°F (8.5°C). The transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a moderate 58.1°F (14.5°C) in November to a chilly 47.3°F (8.5°C). Weather in December »
Updated: Jun 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
Helena records the coldest temperatures 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, during the entire year, the rain falls for 103.1 days and collects up to 18.11" (460mm) of precipitation.
When does it snow?
January through May, October through December are months with snowfall.
How many days does it snow?
In Helena, during the entire year, snow falls for 8.7 days and aggregates up to 4.06" (103mm) of snow.
What is the driest month?
The month with the least rainfall is February, when the rain falls for 5.3 days and typically collects 0.51" (13mm) of precipitation.
What is the snowiest month?
The month with the most snowfall is February, when snow falls for 2.7 days and typically aggregates up to 1.46" (37mm) of snow.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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?
With an average relative humidity of 66%, May is the most humid month.
What is the rainiest month?
May is the month with the most rainfall. Rain falls for 13.2 days and accumulates 3.5" (89mm) of precipitation.
When it does not snow?
In Helena, snow does not fall in June through September.
When are the longest days?
The month with the longest days is June, with an average of 14h and 36min of daylight.
What month has the most sunshine?
The month with the most sunshine is June, with an average of 11.4h of sunshine.
When is the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 7.
What time of the year is the hottest?
In Helena, July records the average highest temperatures, peaking at 95.2°F (35.1°C) and reaching a low of 75.2°F (24°C).
What is the least humid month?
July is the least humid month, with an average relative humidity of 54%.
What is the month with the shortest days?
With an average of 9h and 42min of daylight, December has the shortest days of the year.
What is the month with the least sunshine?
The month with the least sunshine is December, with an average of 6.4h of sunshine.
When is the lowest UV index?
The month with the lowest UV index in Helena is December, with an average maximum UV index of 2.
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).
Average pressure
Helena, OK
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
29.89"Hg - Average pressure in May:
29.89"Hg - Average pressure in June:
29.86"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed
Helena, OK
- Average wind speed in January:
10.1mph - Average wind speed in February:
10.5mph - Average wind speed in March:
11.3mph - Average wind speed in April:
11.8mph - Average wind speed in May:
10.5mph - Average wind speed in June:
10.9mph
- Average wind speed in July:
9.2mph - Average wind speed in August:
8.8mph - Average wind speed in September:
9.6mph - Average wind speed in October:
10.2mph - Average wind speed in November:
10.6mph - Average wind speed in December:
9.8mph
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).
Average humidity
Helena, OK
The month with the highest relative humidity is May (66%).
The month with the lowest relative humidity is July (54%).
Average rainfall
Helena, OK
- Average rainfall in January:
0.63" - Average rainfall in February:
0.51" - Average rainfall in March:
0.94" - Average rainfall in April:
1.85" - Average rainfall in May:
3.5" - Average rainfall in June:
1.77"
- Average rainfall in July:
1.65" - Average rainfall in August:
1.93" - Average rainfall in September:
1.61" - Average rainfall in October:
2.4" - Average rainfall in November:
0.63" - Average rainfall in December:
0.67"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days
Helena, OK
- Average rainfall days in January:
3.7 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
8.4 days - Average rainfall days in April:
12 days - Average rainfall days in May:
13.2 days - Average rainfall days in June:
9.8 days
- Average rainfall days in July:
10.3 days - Average rainfall days in August:
11.8 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
8.5 days - Average rainfall days in November:
4.7 days - Average rainfall days in December:
3.6 days
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).
Average snowfall
Helena, OK
- Average snowfall in January:
0.79" - Average snowfall in February:
1.46" - Average snowfall in March:
0.94" - Average snowfall in April:
0.08" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is February (1.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Helena, OK
- Average snowfall days in January:
2.3 days - Average snowfall days in February:
2.7 days - Average snowfall days in March:
0.8 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.2 days - Average snowfall days in November:
0.7 days - Average snowfall days in December:
1.7 days
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).
Average daylight / Average sunshine
Helena, OK
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 4min
- Average daylight in July:
14h and 2min - Average daylight in August:
13h and 3min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 4min
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).
- Average sunshine in January:
6h and 3min - Average sunshine in February:
7h and 5min - Average sunshine in March:
7h and 5min - Average sunshine in April:
8h and 5min - Average sunshine in May:
9h and 5min - Average sunshine in June:
11h and 2min
- Average sunshine in July:
11h and 2min - Average sunshine in August:
11h and 0min - Average sunshine in September:
9h and 0min - Average sunshine in October:
7h and 2min - Average sunshine in November:
6h and 3min - Average sunshine in December:
6h and 2min
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).
Average sunshine days
Helena, OK
- Average sunshine days in January:
25.5 days - Average sunshine days in February:
20.8 days - Average sunshine days in March:
19.8 days - Average sunshine days in April:
16.8 days - Average sunshine days in May:
15 days - Average sunshine days in June:
16.5 days
- Average sunshine days in July:
16.8 days - Average sunshine days in August:
16.8 days - Average sunshine days in September:
15.7 days - Average sunshine days in October:
20.8 days - Average sunshine days in November:
23.9 days - Average sunshine days in December:
24.5 days
The month with the most sunshine days is January (25.5 days).
The month with the least sunshine days is May (15 days).
Average UV index
Helena, OK
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover
Helena, OK
The months with the most cloud cover are March and April (Cloud cover 33).
The month with the least cloud cover is June (Cloud cover 17).
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).
Helena, Oklahoma, USA
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