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 arrival sees a rise in the average high-temperature, jumping from March's frosty 45.5°F (7.5°C) to a mild 56.7°F (13.7°C). In Harvey, April nights cool down to an average of 41.7°F (5.4°C).Humidity
The average relative humidity in April is 75%.Rainfall
In Harvey, in April, it is raining for 16.8 days, with typically 3.43" (87mm) of accumulated precipitation. Throughout the year, there are 155.6 rainfall days, and 31.3" (795mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows. During 1.9 snowfall days, in April, Harvey aggregates 1.97" (50mm) of snow. Throughout the year, there are 44.6 snowfall days, and 16.46" (418mm) of snow is accumulated.Daylight
In Harvey, the average length of the day in April is 13h and 22min.On the first day of April, sunrise is at 6:32 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 7:47 pm CDT.
Sunshine
In Harvey, the average sunshine in April is 7.6h.UV index
In April, the average daily maximum UV index in Harvey is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The daily maximum UV index of 3 in April interprets into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Harvey in April?
What is the average humidity in April?
How much does it rain in April?
What is the last month it snows in Harvey?
How many hours of daylight does Harvey have in April?
What time are sunrise and sunset in April?
How long on average sun shines in April?
What is the UV index reading in April?
Average temperature in April
Harvey, IL
- Average high temperature in April: 56.7°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in April: 41.7°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in April
Harvey, IL
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Harvey, IL
- Average wind speed in April: 9.8mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in April
Harvey, IL
- Average humidity in April: 75%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in April
Harvey, IL
- Average rainfall in April: 3.43"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days in April
Harvey, IL
- Average rainfall days in April: 16.8 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (6.1 days).
Average snowfall in April
Harvey, IL
- Average snowfall in April: 1.97"
The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Harvey, IL
- Average snowfall days in April: 1.9 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Harvey, IL
- 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 12min).
- Average sunshine in April: 7h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in April
Harvey, IL
- Average sunshine days in April: 10.2 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is April (10.2 days).
Average UV index in April
Harvey, IL
- Average UV index in April: 3
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
Harvey, IL
- Average cloud cover in April: 49
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in April
Harvey, IL
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Harvey, Illinois, USA
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