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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, the same as December, in Heyburn, Oklahoma, is a frosty winter month, with temperature in the range of an average low of 31.5°F (-0.3°C) and an average high of 46.9°F (8.3°C). January, with an average high of 46.9°F (8.3°C) and a low of 31.5°F (-0.3°C), signifies the coldest month of the year. Weather in January »
Weather in February
The last month of the winter, February, is a cool month in Heyburn, Oklahoma, with an average temperature fluctuating between 34.3°F (1.3°C) and 50.5°F (10.3°C). At the start of February, Heyburn's average high-temperature reaches a fresh 50.5°F (10.3°C), subtly different from the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a refreshing month in Heyburn, Oklahoma, with an average temperature varying between 44.1°F (6.7°C) and 61.3°F (16.3°C). As February transitions into March, Heyburn sees a rise in the average high-temperature, moving from a fresh 50.5°F (10.3°C) to a refreshing 61.3°F (16.3°C). Weather in March »
Weather in April
April is a pleasant spring month in Heyburn, Oklahoma, with an average temperature fluctuating between 50.9°F (10.5°C) and 69.4°F (20.8°C). April witnesses a subtle temperature ascent, adjusting from a refreshing 61.3°F (16.3°C) in March to a pleasant 69.4°F (20.8°C). Weather in April »
Weather in May
May, the last month of the spring in Heyburn, is a warm month, with an average temperature varying between 59.4°F (15.2°C) and 75.7°F (24.3°C). Heyburn, Oklahoma, in May denotes a subtle temperature transition, adjusting from an average high of an agreeable 69.4°F (20.8°C) in April to a moderately hot 75.7°F (24.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a hot month in Heyburn, Oklahoma, with an average temperature varying between 69.1°F (20.6°C) and 86.5°F (30.3°C). Heyburn in June sees a temperature change, with average high-temperatures moving from a moderately hot 75.7°F (24.3°C) in May to a tropical 86.5°F (30.3°C). Weather in June »
Weather in July
July, like June, is a hot summer month in Heyburn, Oklahoma, with an average temperature ranging between max 91.4°F (33°C) and min 72.1°F (22.3°C). Heyburn's temperature records reveal July as the warmest month, marked by average highs of 91.4°F (33°C) and lows of 72.1°F (22.3°C). July's mean heat index is computed to be a blisteringly hot 109.4°F (43°C). Weather in July »
Weather in August
August, the last month of the summer in Heyburn, is another tropical month, with temperature in the range of an average low of 70.3°F (21.3°C) and an average high of 90.9°F (32.7°C). Heyburn's entry into August measures an average high-temperature of a still hot 90.9°F (32.7°C), closely parallel to the preceding month. Weather in August »
Weather in September
September, the first month of the autumn in Heyburn, is also a moderately hot month, with an average temperature ranging between min 64.2°F (17.9°C) and max 83.7°F (28.7°C). Transitioning from August to September involves a subtle drop in average high-temperatures, descending from a hot 90.9°F (32.7°C) to a moderately hot 83.7°F (28.7°C). Weather in September »
Weather in October
October, like September, is another pleasant autumn month in Heyburn, Oklahoma, with an average temperature varying between 70.9°F (21.6°C) and 53.1°F (11.7°C). Heyburn's October weather comes with a decrease in average high-temperatures, moving from a warm 83.7°F (28.7°C) in September to a pleasant 70.9°F (21.6°C). Weather in October »
Weather in November
The last month of the autumn, November, is another refreshing month in Heyburn, Oklahoma, with an average temperature varying between 43°F (6.1°C) and 59.2°F (15.1°C). November's arrival corresponds with a decrease in average high-temperatures, from October's pleasant 70.9°F (21.6°C) to a moderate 59.2°F (15.1°C). Weather in November »
Weather in December
December, the first month of the winter in Heyburn, is also a frosty month, with temperature in the range of an average high of 48.7°F (9.3°C) and an average low of 34.5°F (1.4°C). December implies a gentle temperature shift, with average high-temperatures reducing from November's moderate 59.2°F (15.1°C) to a chilly 48.7°F (9.3°C). Weather in December »
Updated: Jul 20, 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 is the coldest month?
The month of January sees the average lowest temperatures, reaching 46.9°F (8.3°C) at the peak and 31.5°F (-0.3°C) at the low.
What are the least humid months?
January and August, with an average relative humidity of 66%, are the least humid months.
What is the driest month?
January is the month with the least rainfall. Rain falls for 5.4 days and accumulates 1.22" (31mm) of precipitation.
How many days does it rain?
Throughout the year, there are 129.3 rainfall days, and 29.13" (740mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through March, November and December.
How much does it snow in Heyburn?
In Heyburn, during the entire year, snow falls for 5.8 days and aggregates up to 3.46" (88mm) of snow.
What is the month with the lowest UV index?
January and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the snowiest month?
February is the month with the most snowfall. Snow falls for 2.4 days and accumulates 1.65" (42mm) 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.
When it does not snow?
In Heyburn, snow does not fall in April through October.
What is the most humid month?
The most humid month is May, with an average relative humidity of 80%.
What is the wettest month?
May is the month with the most rainfall. Rain falls for 16.4 days and accumulates 4.92" (125mm) of precipitation.
When are the longest days?
The month with the longest days is June, with an average of 14h and 36min of daylight.
What is the month with the highest UV index in Heyburn?
June through August, with an average maximum UV index of 7, are months with the highest UV index.
What part of the year is the hottest?
In Heyburn, the average highest temperatures are observed in July, with a high of 91.4°F (33°C) and a low of 72.1°F (22.3°C).
What month has the most sunshine?
The month with the most sunshine is August, with an average of 11h of sunshine.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 48min of daylight.
What is the month with the least sunshine in Heyburn?
December has the least sunshine of the year, with an average of 5.7h of sunshine.
Average temperature
Heyburn, OK
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (46.9°F).
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure
Heyburn, OK
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"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 (29.89"Hg).
Average wind speed
Heyburn, OK
- Average wind speed in January:
9.9mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.9mph - Average wind speed in April:
10.9mph - Average wind speed in May:
9.3mph - Average wind speed in June:
8.5mph
- Average wind speed in July:
7.3mph - Average wind speed in August:
7.4mph - Average wind speed in September:
7.6mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.3mph
The windiest months (with the highest average wind speed) are March and April (10.9mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity
Heyburn, OK
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January and August (66%).
Average rainfall
Heyburn, OK
- Average rainfall in January:
1.22" - Average rainfall in February:
1.34" - Average rainfall in March:
2.24" - Average rainfall in April:
2.72" - Average rainfall in May:
4.92" - Average rainfall in June:
2.09"
- Average rainfall in July:
2.64" - Average rainfall in August:
2.87" - Average rainfall in September:
3.35" - Average rainfall in October:
3.03" - Average rainfall in November:
1.38" - Average rainfall in December:
1.34"
The wettest month (with the highest rainfall) is May (4.92").
The driest month (with the least rainfall) is January (1.22").
Average rainfall days
Heyburn, OK
- Average rainfall days in January:
5.4 days - Average rainfall days in February:
8.1 days - Average rainfall days in March:
11.5 days - Average rainfall days in April:
14.2 days - Average rainfall days in May:
16.4 days - Average rainfall days in June:
11.9 days
- Average rainfall days in July:
13.2 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
10.9 days - Average rainfall days in November:
7.5 days - Average rainfall days in December:
6.4 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (5.4 days).
Average snowfall
Heyburn, OK
The month with the highest snowfall is February (1.65").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Heyburn, OK
- Average snowfall days in January:
1.5 days - Average snowfall days in February:
2.4 days - Average snowfall days in March:
0.5 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0 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 days - Average snowfall days in November:
0.2 days - Average snowfall days in December:
1.1 days
The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Heyburn, OK
- Average daylight in January:
10h and 1min - 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 2min - Average daylight in November:
10h and 2min - Average daylight in December:
9h and 5min
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 48min).
- Average sunshine in January:
5h and 5min - Average sunshine in February:
6h and 4min - Average sunshine in March:
7h and 1min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 4min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
11h and 0min - Average sunshine in September:
8h and 4min - Average sunshine in October:
6h and 4min - Average sunshine in November:
6h and 0min - Average sunshine in December:
5h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days
Heyburn, OK
- Average sunshine days in January:
22.5 days - Average sunshine days in February:
17.2 days - Average sunshine days in March:
16.8 days - Average sunshine days in April:
13.4 days - Average sunshine days in May:
12.7 days - Average sunshine days in June:
15.8 days
- Average sunshine days in July:
15.7 days - Average sunshine days in August:
16.2 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
21 days - Average sunshine days in December:
22.3 days
The month with the most sunshine days is January (22.5 days).
The month with the least sunshine days is May (12.7 days).
Average UV index
Heyburn, OK
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover
Heyburn, OK
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility
Heyburn, 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).
Heyburn, Oklahoma, USA
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