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 arrival of April sees a shift in the average high-temperature, moving from a wintry 42.6°F (5.9°C) in March to a moderate 55.8°F (13.2°C). During the month of April, the temperature falls to an average of 40.3°F (4.6°C).Humidity
In Thornton, the average relative humidity in April is 71%.Rainfall
In April, in Thornton, the rain falls for 15 days. Throughout April, 2.95" (75mm) of precipitation is accumulated. Throughout the year, there are 136.3 rainfall days, and 26.18" (665mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Thornton. In Thornton, in April, snow falls for 2.5 days, with typically accumulated 1.89" (48mm) of snow. Throughout the year, there are 44.7 snowfall days, and 20.51" (521mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 26min.On the first day of April, sunrise is at 6:54 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 8:13 pm CDT.
Sunshine
In April, the average sunshine is 7.7h.UV index
The average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 3 during April translates into the following directions:
Ensure safety - Imperative it is to shield skin and eyes from damage. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Thornton?
What is the average humidity in April in Thornton?
How much does it rain in Thornton in April?
How many days does it snow in April in Thornton?
What is the average length of the day in April in Thornton?
When is the sunrise / sunset in April in Thornton?
How many hours of sunshine does Thornton have in April?
What is the UV index reading in April in Thornton?
Average temperature in April
Thornton, IA
- Average high temperature in April: 55.8°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in April: 40.3°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in April
Thornton, IA
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in April
Thornton, IA
- Average wind speed in April: 11.1mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in April
Thornton, IA
- Average humidity in April: 71%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (70%).
Average rainfall in April
Thornton, IA
- Average rainfall in April: 2.95"
The wettest month (with the highest rainfall) is June (3.98").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in April
Thornton, IA
- Average rainfall days in April: 15 days
The month with the highest number of rainy days is June (18.6 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in April
Thornton, IA
- Average snowfall in April: 1.89"
The month with the highest snowfall is February (5.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Thornton, IA
- Average snowfall days in April: 2.5 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Thornton, IA
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in April: 7h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in April
Thornton, IA
- Average sunshine days in April: 12.6 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is June (10 days).
Average UV index in April
Thornton, IA
- Average UV index in April: 3
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in April
Thornton, IA
- Average cloud cover in April: 47
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in April
Thornton, IA
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Thornton, Iowa, USA
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