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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 a frosty winter month in Halley, Oklahoma, with an average temperature fluctuating between 33.3°F (0.7°C) and 48.9°F (9.4°C). January is the coldest month, with an average high-temperature of 48.9°F (9.4°C) and an average low-temperature of 33.3°F (0.7°C). Weather in January »
Weather in February
February, the last month of the winter in Halley, is a cool month, with an average temperature varying between 52.5°F (11.4°C) and 36.5°F (2.5°C). Halley observes a minor difference in average high-temperatures between January's 48.9°F (9.4°C) and February's 52.5°F (11.4°C). Weather in February »
Weather in March
March, the first month of the spring in Halley, is a refreshing month, with an average temperature ranging between max 62.2°F (16.8°C) and min 45.1°F (7.3°C). The shift from February to March sees an increase in the average high-temperature, transitioning from a cool 52.5°F (11.4°C) to a refreshing 62.2°F (16.8°C). Weather in March »
Weather in April
April is a pleasant spring month in Halley, Oklahoma, with an average temperature varying between 70.5°F (21.4°C) and 51.6°F (10.9°C). The shift from March to April introduces a subtle increase in the average high-temperature, moving from a refreshing 62.2°F (16.8°C) to an agreeable 70.5°F (21.4°C). Weather in April »
Weather in May
May, the last month of the spring in Halley, is a warm month, with an average temperature fluctuating between 77.7°F (25.4°C) and 60.1°F (15.6°C). The onset of May introduces a subtle rise in the average high-temperature, nudging from an agreeable 70.5°F (21.4°C) in April to a moderately hot 77.7°F (25.4°C). Weather in May »
Weather in June
June, the first month of the summer in Halley, is a tropical month, with temperature in the range of an average low of 69.4°F (20.8°C) and an average high of 88.3°F (31.3°C). With the onset of June, Halley's weather sees a temperature rise, transitioning from a moderately hot 77.7°F (25.4°C) in May to a tropical 88.3°F (31.3°C). Weather in June »
Weather in July
July, like June, is a hot summer month in Halley, Oklahoma, with an average temperature ranging between max 92.7°F (33.7°C) and min 72.1°F (22.3°C). Halley witnesses the warmest weather in July, with temperatures averaging a high of 92.7°F (33.7°C) and a low of 72.1°F (22.3°C). In July, the heat index is appraised at a blazing hot 113°F (45°C). Weather in July »
Weather in August
The last month of the summer, August, is also a hot month in Halley, Oklahoma, with an average temperature fluctuating between 71.1°F (21.7°C) and 92.3°F (33.5°C). Upon the beginning of August, Halley's high-temperatures register at a still hot 92.3°F (33.5°C), closely mirroring the preceding month. Weather in August »
Weather in September
September, the first month of the autumn in Halley, is still a warm month, with temperature in the range of an average low of 64.6°F (18.1°C) and an average high of 85.1°F (29.5°C). September implies a soft temperature shift, with average high-temperatures reducing from August's hot 92.3°F (33.5°C) to a moderately hot 85.1°F (29.5°C). Weather in September »
Weather in October
October, the same as September, in Halley, Oklahoma, is another pleasant autumn month, with an average temperature fluctuating between 72.1°F (22.3°C) and 53.4°F (11.9°C). The arrival of October corresponds with a reduction in the average high-temperature, down from September's warm 85.1°F (29.5°C) to a pleasant 72.1°F (22.3°C). Weather in October »
Weather in November
The last month of the autumn, November, is another refreshing month in Halley, Oklahoma, with an average temperature ranging between min 43.3°F (6.3°C) and max 60.6°F (15.9°C). As October transitions into November, Halley sees a drop in the average high-temperature, transitioning from a pleasant 72.1°F (22.3°C) to a refreshing 60.6°F (15.9°C). Weather in November »
Weather in December
December, the first month of the winter in Halley, is also a fresh month, with an average temperature fluctuating between 50.4°F (10.2°C) and 36°F (2.2°C). Halley's progression into December includes a drop in the average high-temperature, from a moderate 60.6°F (15.9°C) in November to a cool 50.4°F (10.2°C). Weather in December »
Updated: Aug 15, 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 time of the year is the coldest?
In Halley, January is the month with the lowest recorded average temperatures, measuring a high of 48.9°F (9.4°C) and a low of 33.3°F (0.7°C).
How many days does it rain?
Throughout the year, there are 138.1 rainfall days, and 30.71" (780mm) of precipitation is accumulated.
When does it snow?
January through April, November and December are months with snowfall.
How many days does it snow in Halley?
Throughout the year, there are 5.4 snowfall days, and 2.8" (71mm) of snow is accumulated.
What is the driest month?
The month with the least rainfall is February, when the rain falls for 9.9 days and typically collects 1.73" (44mm) of precipitation.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 2.3 days and accumulates 1.14" (29mm) of snow.
When is Daylight Saving Time (DST) in Halley?
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?
With an average relative humidity of 78%, May is the most humid month.
What is the rainiest month?
The month with the most rainfall is May, when the rain falls for 14.4 days and typically aggregates up to 4.41" (112mm) of precipitation.
When it does not snow?
May through October are months without snowfall in Halley.
When are the longest days?
June has the longest days of the year, with an average of 14h and 30min of daylight.
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 part of the year is the hottest?
July is Halley's warmest month, registering average high temperatures of 92.7°F (33.7°C) and lows of 72.1°F (22.3°C).
What is the least humid month?
August is the least humid month, with an average relative humidity of 66%.
What month has the most sunshine?
The month with the most sunshine is August, with an average of 10.9h of sunshine.
What is the month with the shortest days?
With an average of 9h and 54min of daylight, December has the shortest days of the year.
What is the month with the least sunshine?
December has the least sunshine of the year, with an average of 5.5h of sunshine.
What is the month with the lowest UV index?
December is the month with the lowest UV index, with an average maximum UV index of 2.
Average temperature
Halley, OK
The warmest month (with the highest average high temperature) is July (92.7°F).
The month with the lowest average high temperature is January (48.9°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 (33.3°F).
Average pressure
Halley, OK
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.94"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 (29.91"Hg).
Average wind speed
Halley, OK
- Average wind speed in January:
8.6mph - Average wind speed in February:
9.1mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.5mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.2mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
6.2mph - Average wind speed in September:
6.5mph - Average wind speed in October:
7.9mph - Average wind speed in November:
8.8mph - Average wind speed in December:
8.2mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity
Halley, OK
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (66%).
Average rainfall
Halley, OK
- Average rainfall in January:
1.85" - Average rainfall in February:
1.73" - Average rainfall in March:
2.64" - Average rainfall in April:
2.99" - Average rainfall in May:
4.41" - Average rainfall in June:
2.13"
- Average rainfall in July:
2.52" - Average rainfall in August:
2.95" - Average rainfall in September:
2.48" - Average rainfall in October:
3.19" - Average rainfall in November:
1.89" - Average rainfall in December:
1.93"
The wettest month (with the highest rainfall) is May (4.41").
The driest month (with the least rainfall) is February (1.73").
Average rainfall days
Halley, OK
- Average rainfall days in January:
7.7 days - Average rainfall days in February:
9.9 days - Average rainfall days in March:
13.7 days - Average rainfall days in April:
13.7 days - Average rainfall days in May:
14.4 days - Average rainfall days in June:
10.9 days
- Average rainfall days in July:
14.2 days - Average rainfall days in August:
12.7 days - Average rainfall days in September:
12.3 days - Average rainfall days in October:
11.1 days - Average rainfall days in November:
8.3 days - Average rainfall days in December:
9.2 days
The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is January (7.7 days).
Average snowfall
Halley, OK
The month with the highest snowfall is February (1.14").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Halley, OK
- Average snowfall days in January:
1.3 days - Average snowfall days in February:
2.3 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 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
0.6 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Halley, OK
- Average daylight in January:
10h and 1min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 3min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - 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 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January:
5h and 4min - Average sunshine in February:
6h and 1min - Average sunshine in March:
6h and 5min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
10h and 5min - Average sunshine in September:
8h and 5min - Average sunshine in October:
6h and 2min - Average sunshine in November:
6h and 0min - Average sunshine in December:
5h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days
Halley, OK
- Average sunshine days in January:
20.8 days - Average sunshine days in February:
15.2 days - Average sunshine days in March:
15.1 days - Average sunshine days in April:
14.5 days - Average sunshine days in May:
14.8 days - Average sunshine days in June:
16.3 days
- Average sunshine days in July:
14.6 days - Average sunshine days in August:
15.5 days - Average sunshine days in September:
15.5 days - Average sunshine days in October:
18.2 days - Average sunshine days in November:
19.7 days - Average sunshine days in December:
19.5 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is April (14.5 days).
Average UV index
Halley, 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
Halley, OK
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility
Halley, 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).
Halley, Oklahoma, USA
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