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
April's onset witnesses a shift in the average high-temperature, moving from a frosty 47.8°F (8.8°C) in March to a refreshing 59.5°F (15.3°C). During April, Lewis observes a consistent average nighttime temperature of 42.4°F (5.8°C).Humidity
The average relative humidity in April is 70%.Rainfall
In Lewis, in April, during 13.6 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. In Lewis, during the entire year, the rain falls for 118.7 days and collects up to 20.79" (528mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In April, it is snowing for 1.3 days. Throughout April, 0.59" (15mm) of snow is accumulated. Throughout the year, there are 32.3 snowfall days, and 9.41" (239mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 21min.On the first day of the month, sunrise is at 7:01 am and sunset at 7:45 pm. On the last day of April, in Lewis, sunrise is at 6:17 am and sunset at 8:17 pm CDT.
Sunshine
The average sunshine in April is 8.1h.UV index
The average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 3 in April transforms into this advice:
Heed the precautions - Suggestions to avoid sunburn are made. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature?
What is the average humidity in April?
How much does it rain in April?
How many days does it snow in April?
How many hours of daylight does Lewis have in April?
When is the sunrise / sunset in April?
How many hours of sunshine does Lewis have in April?
What is the UV index reading in April?
Average temperature in April
Lewis, IA
- Average high temperature in April: 59.5°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in April: 42.4°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in April
Lewis, IA
- Average pressure in April: 29.92"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 in April
Lewis, IA
- Average wind speed in April: 10.7mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in April
Lewis, IA
- Average humidity in April: 70%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (69%).
Average rainfall in April
Lewis, IA
- Average rainfall in April: 1.73"
The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in April
Lewis, IA
- Average rainfall days in April: 13.6 days
The month with the highest number of rainy days is June (16.4 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in April
Lewis, IA
- Average snowfall in April: 0.59"
The month with the highest snowfall is February (2.36").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Lewis, IA
- Average snowfall days in April: 1.3 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Lewis, IA
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in April: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in April
Lewis, IA
- Average sunshine days in April: 14.3 days
The month with the most sunshine days is December (21.2 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in April
Lewis, IA
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in April
Lewis, IA
- Average cloud cover in April: 44
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in April
Lewis, IA
- 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).
Lewis, Iowa, USA
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