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 start of April signals an increase in the average high-temperature, moving from a cool 51.4°F (10.8°C) in March to an enjoyable 62.8°F (17.1°C). An average low-temperature of 46.4°F (8°C) marks the nights throughout April.Humidity
In April, the average relative humidity in Martinsville is 77%.Rainfall
The month with the most rainfall is April, when the rain falls for 12.6 days and typically aggregates up to 1.54" (39mm) of precipitation.Snowfall
Months with snowfall in Martinsville are January through April, November and December. April is the last month it regularly snows. During 0.3 snowfall days, in April, Martinsville aggregates 0.04" (1mm) of snow. Throughout the year, there are 18.9 snowfall days, and 1.73" (44mm) of snow is accumulated.Daylight
In Martinsville, Illinois, the average length of the day in April is 13h and 16min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:15 pm. On the last day of April, in Martinsville, sunrise is at 5:52 am and sunset at 7:44 pm CDT.
Sunshine
In Martinsville, Illinois, the average sunshine in April is 8.1h.UV index
In April, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In April, the average maximum UV index of 4 translates into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Martinsville?
What is the average humidity in April in Martinsville?
What is the wettest month in Martinsville?
How many days does it rain in April in Martinsville?
What is the last month it snows in Martinsville?
How many hours of daylight does Martinsville have in April?
When is the sunrise / sunset in April in Martinsville?
How long on average sun shines in April in Martinsville?
How high is the UV index in April in Martinsville?
Average temperature in April
Martinsville, IL
- Average high temperature in April: 62.8°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in April: 46.4°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in April
Martinsville, IL
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Martinsville, IL
- Average wind speed in April: 10.1mph
The windiest months (with the highest average wind speed) are January and February (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.1mph).
Average humidity in April
Martinsville, IL
- Average humidity in April: 77%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Martinsville, IL
- Average rainfall in April: 1.54"
The wettest month (with the highest rainfall) is April (1.54").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in April
Martinsville, IL
- Average rainfall days in April: 12.6 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is February (6 days).
Average snowfall in April
Martinsville, IL
- Average snowfall in April: 0.04"
The month with the highest snowfall is December (0.47").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Martinsville, IL
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is January (5.8 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
Martinsville, IL
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in April: 8h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in April
Martinsville, IL
- Average sunshine days in April: 14.8 days
The month with the most sunshine days is October (21.2 days).
The month with the least sunshine days is May (12.4 days).
Average UV index in April
Martinsville, IL
- Average UV index in April: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
Martinsville, IL
- Average cloud cover in April: 44
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in April
Martinsville, IL
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Martinsville, Illinois, USA
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