Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The onset of April introduces a subtle rise in the average high-temperature, nudging from a comfortable 62.2°F (16.8°C) in March to an agreeable 70.5°F (21.4°C). During April, the nighttime temperature in Halley averages to a fresh 51.6°F (10.9°C).Humidity
The average relative humidity in April in Halley is 74%.Rainfall
In Halley, in April, it is raining for 13.7 days, with typically 2.99" (76mm) of accumulated precipitation. In Halley, during the entire year, the rain falls for 138.1 days and collects up to 30.71" (780mm) of precipitation.Snowfall
Months with snowfall in Halley, Oklahoma, are January through April, November and December. April is the last month it regularly snows in Halley. During 0.1 snowfall days, in April, Halley aggregates 0.04" (1mm) of snow. Throughout the year, there are 5.4 snowfall days, and 2.8" (71mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 5min.On the first day of the month, sunrise is at 7:08 am and sunset at 7:44 pm. On the last day of April, sunrise is at 6:32 am and sunset at 8:08 pm CDT.
Sunshine
In April, the average sunshine is 8.2h.UV index
In April, the average daily maximum UV index in Halley, Oklahoma, is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 5 in April translates into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What is the average April temperature in Halley?
What is the average humidity in April in Halley?
How much does it rain in Halley in April?
What is the last month it snows in Halley?
How many hours of daylight does Halley have in April?
When are sunrise and sunset in April in Halley?
How many hours of sunshine does Halley have in April?
What is the UV index intensity in April in Halley?
Average temperature in April
Halley, OK
- Average high temperature in April: 70.5°F
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).
- Average low temperature in April: 51.6°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 in April
Halley, OK
- Average pressure in April: 29.93"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 in April
Halley, OK
- Average wind speed in April: 9.5mph
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 in April
Halley, OK
- Average humidity in April: 74%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (66%).
Average rainfall in April
Halley, OK
- Average rainfall in April: 2.99"
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 in April
Halley, OK
- Average rainfall days in April: 13.7 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 in April
Halley, OK
- Average snowfall in April: 0.04"
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 in April
Halley, OK
- Average snowfall days in April: 0.1 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 in April /
Average sunshine in April
Halley, OK
- Average daylight in April: 13h and 1min
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 April: 8h and 1min
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 in April
Halley, OK
- Average sunshine days in April: 14.5 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 in April
Halley, OK
- Average UV index in April: 5
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 in April
Halley, OK
- Average cloud cover in April: 39
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 in April
Halley, OK
- Average visibility in April: 6mi
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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