April weather forecastHeyburn, OK
April
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).Temperature
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). Throughout the month of April, Heyburn witnesses an average temperature of 50.9°F (10.5°C).Humidity
In April, the average relative humidity is 73%.Rainfall
In Heyburn, in April, during 14.2 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. In Heyburn, during the entire year, the rain falls for 129.3 days and collects up to 29.13" (740mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Heyburn, the average length of the day in April is 13h and 8min.On the first day of the month, sunrise is at 7:10 am and sunset at 7:47 pm. On the last day of April, sunrise is at 6:32 am and sunset at 8:11 pm CDT.
Sunshine
The average sunshine in April in Heyburn is 8.2h.UV index
In Heyburn, the average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The average daily UV index of 5 in April transforms into the following instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Heyburn, OK
- Average high temperature in April: 69.4°F
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).
- Average low temperature in April: 50.9°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 in April
Heyburn, OK
- Average pressure in April: 29.91"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 in April
Heyburn, OK
- Average wind speed in April: 10.9mph
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 in April
Heyburn, OK
- Average humidity in April: 73%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January and August (66%).
Average rainfall in April
Heyburn, OK
- Average rainfall in April: 2.72"
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 in April
Heyburn, OK
- Average rainfall days in April: 14.2 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 in April
Heyburn, OK
- Average snowfall in April: 0"
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 in April
Heyburn, OK
- Average snowfall days in April: 0.1 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 in April /
Average sunshine in April
Heyburn, OK
- Average daylight in April: 13h and 6min
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 April: 8h and 12min
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 in April
Heyburn, OK
- Average sunshine days in April: 13.4 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 in April
Heyburn, OK
- Average UV index in April: 5
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 in April
Heyburn, OK
- Average cloud cover in April: 38
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 in April
Heyburn, 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).
