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
In Lancaster, the onset of April comes with an increased average high-temperature, moving from March's fresh 53.8°F (12.1°C) to a comfortable 64.9°F (18.3°C). In April, Lancaster's temperature tends to fall to an average low of 48.2°F (9°C) during the night.Humidity
In April, the average relative humidity is 77%.Rainfall
April is the month with the most rainfall. Rain falls for 16.4 days and accumulates 4.72" (120mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Lancaster. April is the last month it regularly snows. During 0.3 snowfall days, in April, Lancaster aggregates 0.12" (3mm) of snow. In Lancaster, during the entire year, snow falls for 21 days and aggregates up to 5.39" (137mm) of snow.Daylight
The average length of the day in April is 13h and 14min.On the first day of April, sunrise is at 6:34 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 7:42 pm CDT.
Sunshine
The average sunshine in April is 8.4h.UV index
In Lancaster, the average daily maximum UV index in April is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 5 during April translates into the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the 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?
What is the wettest month?
How much does it rain in April?
What is the last month it snows?
What is the average length of the day in April?
What time are sunrise and sunset in April?
How many hours of sunshine does Lancaster have in April?
What is the UV index reading in April?
Average temperature in April
Lancaster, IL
- Average high temperature in April: 64.9°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in April: 48.2°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in April
Lancaster, IL
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in April
Lancaster, IL
- Average wind speed in April: 9.9mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in April
Lancaster, IL
- Average humidity in April: 77%
The months with the highest relative humidity are May and July (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in April
Lancaster, IL
- Average rainfall in April: 4.72"
The wettest month (with the highest rainfall) is April (4.72").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in April
Lancaster, IL
- Average rainfall days in April: 16.4 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in April
Lancaster, IL
- Average snowfall in April: 0.12"
The month with the highest snowfall is January (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Lancaster, IL
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (6.8 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
Lancaster, IL
- Average daylight in April: 13h and 1min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in April: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in April
Lancaster, IL
- Average sunshine days in April: 11.8 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in April
Lancaster, IL
- Average UV index in April: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Lancaster, IL
- Average cloud cover in April: 42
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in April
Lancaster, IL
- 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).
Lancaster, Illinois, USA
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