Climate and monthly weather forecastHennessey, OK
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in Hennessey, Oklahoma, with an average temperature varying between 30.9°F (-0.6°C) and 48°F (8.9°C). January proves to be the coldest month, recording an average maximum temperature of 48°F (8.9°C) and a minimum temperature of 30.9°F (-0.6°C). Weather in January »Weather in February
February, the last month of the winter in Hennessey, is a fresh month, with an average temperature ranging between max 51.1°F (10.6°C) and min 33.4°F (0.8°C). February's presence marks an average high-temperature of a cool 51.1°F (10.6°C), subtly varied from January's 48°F (8.9°C). Weather in February »Weather in March
The first month of the spring, March, is a refreshing month in Hennessey, Oklahoma, with temperature in the range of an average low of 43.2°F (6.2°C) and an average high of 62.2°F (16.8°C). March's onset brings a rise in the average high-temperature, moving from a fresh 51.1°F (10.6°C) in February to a refreshing 62.2°F (16.8°C). Weather in March »Weather in April
April in Hennessey, Oklahoma, is a pleasant spring month, with an average temperature varying between 50.5°F (10.3°C) and 70.2°F (21.2°C). The arrival of April signals a slight increase in the average high-temperature, moving from an enjoyable 62.2°F (16.8°C) in March to a pleasant 70.2°F (21.2°C). Weather in April »Weather in May
The last month of the spring, May, is a moderately hot month in Hennessey, Oklahoma, with an average temperature fluctuating between 60.1°F (15.6°C) and 79°F (26.1°C). Hennessey, Oklahoma, observes a slight ascent in average high-temperatures during May, adjusting from an agreeable 70.2°F (21.2°C) in April to a warm 79°F (26.1°C). Weather in May »Weather in June
The first month of the summer, June, is a hot month in Hennessey, Oklahoma, with an average temperature fluctuating between 71.2°F (21.8°C) and 91°F (32.8°C). The shift into June is marked by a rise in the average high-temperature, moving from May's moderately hot 79°F (26.1°C) to a hot 91°F (32.8°C). Weather in June »Weather in July
July is a torrid summer month in Hennessey, Oklahoma, with an average temperature ranging between min 74.8°F (23.8°C) and max 95.4°F (35.2°C). Hennessey's July weather reaches an average high of 95.4°F (35.2°C) and an average low of 74.8°F (23.8°C), making it the warmest month. During July, the heat index is appraised at a blisteringly hot 111.2°F (44°C). Weather in July »Weather in August
August, the last month of the summer in Hennessey, is another tropical month, with temperature in the range of an average high of 93.9°F (34.4°C) and an average low of 73°F (22.8°C). The introduction of August notes a subtle temperature variation to a hot 93.9°F (34.4°C) from July's 95.4°F (35.2°C). Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Hennessey, Oklahoma, with an average temperature ranging between min 66.2°F (19°C) and max 85.3°F (29.6°C). September sees a slight reduction in average high-temperature, with a shift from a hot 93.9°F (34.4°C) in August to a warm 85.3°F (29.6°C). Weather in September »Weather in October
October, the same as September, in Hennessey, Oklahoma, is another pleasant autumn month, with an average temperature ranging between min 53.4°F (11.9°C) and max 70.9°F (21.6°C). Hennessey in October showcases a distinct temperature shift, moving from an average high of a warm 85.3°F (29.6°C) in September to a pleasant 70.9°F (21.6°C). Weather in October »Weather in November
November, the last month of the autumn in Hennessey, is another mild month, with temperature in the range of an average low of 41.4°F (5.2°C) and an average high of 59.2°F (15.1°C). The transition into November involves a decrease in the average high-temperature, falling from an agreeable 70.9°F (21.6°C) in October to a mild 59.2°F (15.1°C). Weather in November »Weather in December
December, the first month of the winter in Hennessey, is also a frosty month, with temperature in the range of an average high of 49.1°F (9.5°C) and an average low of 32.4°F (0.2°C). The arrival of December signals a shift in temperature, down from a moderate 59.2°F (15.1°C) in November to a chilly 49.1°F (9.5°C). Weather in December »Updated: Jun 4, 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
With an average high-temperature of 48°F (8.9°C) and an average low-temperature of 30.9°F (-0.6°C), January is the coldest month.
In Hennessey, during the entire year, the rain falls for 107 days and collects up to 20.75" (527mm) of precipitation.
January through March, October through December are months with snowfall.
Throughout the year, there are 6.6 snowfall days, and 2.28" (58mm) of snow is accumulated.
The month with the most snowfall is February, when snow falls for 2.4 days and typically aggregates up to 0.98" (25mm) of snow.
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.
April through September are months without snowfall.
With an average relative humidity of 69%, May is the most humid month in Hennessey.
May is the month with the most rainfall in Hennessey. Rain falls for 13 days and accumulates 3.94" (100mm) of precipitation.
With an average of 14h and 36min of daylight, June has the longest days of the year.
The months with the most sunshine are June and July, with an average of 11.2h of sunshine.
June through August, with an average maximum UV index of 7, are months with the highest UV index.
Hennessey's July weather, with an average high temperature of 95.4°F (35.2°C) and an average low temperature of 74.8°F (23.8°C), tends to be the warmest of the year.
With an average relative humidity of 56%, August is the least humid month.
The month with the least rainfall in Hennessey is December, when the rain falls for 5.2 days and typically collects 0.71" (18mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 48min of daylight.
December has the least sunshine of the year, with an average of 6.2h of sunshine.
With an average maximum UV index of 2, December is the month with the lowest UV index.
Average temperature
Hennessey, OK
The warmest month (with the highest average high temperature) is July (95.4°F).
The month with the lowest average high temperature is January (48°F).
The month with the highest average low temperature is July (74.8°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).
Average pressure
Hennessey, OK
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
29.89"Hg - Average pressure in May:
29.9"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.92"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 (29.87"Hg).
Average wind speed
Hennessey, OK
- Average wind speed in January:
10.5mph - Average wind speed in February:
10.8mph - Average wind speed in March:
11.6mph - Average wind speed in April:
11.9mph - Average wind speed in May:
10.6mph - Average wind speed in June:
10.6mph
- Average wind speed in July:
9mph - Average wind speed in August:
8.6mph - Average wind speed in September:
9mph - Average wind speed in October:
10.1mph - Average wind speed in November:
10.7mph - Average wind speed in December:
10mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).
Average humidity
Hennessey, OK
The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is August (56%).
Average rainfall
Hennessey, OK
- Average rainfall in January:
0.87" - Average rainfall in February:
0.87" - Average rainfall in March:
1.34" - Average rainfall in April:
2.24" - Average rainfall in May:
3.94" - Average rainfall in June:
1.61"
- Average rainfall in July:
1.69" - Average rainfall in August:
1.93" - Average rainfall in September:
2.52" - Average rainfall in October:
2.24" - Average rainfall in November:
0.79" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days
Hennessey, OK
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
6.2 days - Average rainfall days in March:
9.3 days - Average rainfall days in April:
12.1 days - Average rainfall days in May:
13 days - Average rainfall days in June:
9 days
- Average rainfall days in July:
11.1 days - Average rainfall days in August:
10.5 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
8.9 days - Average rainfall days in November:
6.3 days - Average rainfall days in December:
5.2 days
The month with the highest number of rainy days is May (13 days).
The month with the least rainy days is January (3.8 days).
Average snowfall
Hennessey, OK
The month with the highest snowfall is February (0.98").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days
Hennessey, OK
- Average snowfall days in January:
1.8 days - Average snowfall days in February:
2.4 days - Average snowfall days in March:
0.6 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:
0.1 days - Average snowfall days in November:
0.5 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 and September (0 days).
Average daylight / Average sunshine
Hennessey, OK
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 6min - Average daylight in June:
14h and 36min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 48min
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:
6h and 24min - Average sunshine in February:
7h and 24min - Average sunshine in March:
7h and 30min - Average sunshine in April:
8h and 36min - Average sunshine in May:
9h and 30min - Average sunshine in June:
11h and 12min
- Average sunshine in July:
11h and 12min - Average sunshine in August:
11h and 0min - Average sunshine in September:
8h and 42min - Average sunshine in October:
7h and 6min - Average sunshine in November:
6h and 18min - Average sunshine in December:
6h and 12min
The months with the most sunshine are June and July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days
Hennessey, OK
- Average sunshine days in January:
24.4 days - Average sunshine days in February:
20.1 days - Average sunshine days in March:
18.6 days - Average sunshine days in April:
15.8 days - Average sunshine days in May:
16.1 days - Average sunshine days in June:
18.8 days
- Average sunshine days in July:
18.1 days - Average sunshine days in August:
16.6 days - Average sunshine days in September:
16.4 days - Average sunshine days in October:
20.1 days - Average sunshine days in November:
22.8 days - Average sunshine days in December:
23.8 days
The month with the most sunshine days is January (24.4 days).
The month with the least sunshine days is April (15.8 days).
Average UV index
Hennessey, 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
Hennessey, OK
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is June (Cloud cover 18).
Average visibility
Hennessey, 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).
