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 brings a shift in the average high-temperature, increasing from March's fresh 52.3°F (11.3°C) to a refreshing 63.7°F (17.6°C). An average low-temperature of 46.9°F (8.3°C) is observed during the April nights.Humidity
In Sullivan, the average relative humidity in April is 77%.Rainfall
The month with the most rainfall is April, when the rain falls for 16 days and typically aggregates up to 4.06" (103mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows in Sullivan, Indiana. During 0.4 snowfall days, in April, Sullivan aggregates 0.16" (4mm) of snow. In Sullivan, during the entire year, snow falls for 23.8 days and aggregates up to 6.89" (175mm) of snow.Daylight
In Sullivan, the average length of the day in April is 13h and 16min.On the first day of the month, sunrise is at 7:32 am and sunset at 8:13 pm. On the last day of April, in Sullivan, sunrise is at 6:51 am and sunset at 8:42 pm EDT.
Sunshine
The average sunshine in April in Sullivan is 7.1h.UV index
In Sullivan, Indiana, the average daily maximum UV index in April is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 4 in April, converts into the following recommendations:
Take precautions - Protection against sunburn is recommended. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Frequently asked questions
What is the usual temperature for Sullivan in April?
What is the average humidity in April in Sullivan?
What is the wettest month in Sullivan?
How much does it rain in Sullivan in April?
What is the last month it snows in Sullivan?
How many hours of daylight does Sullivan have in April?
When are sunrise and sunset in April in Sullivan?
How long on average sun shines in April in Sullivan?
What is the UV index intensity in April in Sullivan?
Average temperature in April
Sullivan, IN
- Average high temperature in April: 63.7°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in April: 46.9°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in April
Sullivan, IN
- 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
Sullivan, IN
- Average wind speed in April: 9.6mph
The windiest months (with the highest average wind speed) are January and February (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in April
Sullivan, IN
- Average humidity in April: 77%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Sullivan, IN
- Average rainfall in April: 4.06"
The wettest month (with the highest rainfall) is April (4.06").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in April
Sullivan, IN
- Average rainfall days in April: 16 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (8.5 days).
Average snowfall in April
Sullivan, IN
- Average snowfall in April: 0.16"
The month with the highest snowfall is January (2.13").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Sullivan, IN
- Average snowfall days in April: 0.4 days
The month with the highest number of snowfall days is January (7.3 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
Sullivan, IN
- 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: 7h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 24min).
Average sunshine days in April
Sullivan, IN
- Average sunshine days in April: 12.3 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in April
Sullivan, IN
- Average UV index in April: 4
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
Sullivan, IN
- 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 August (Cloud cover 29).
Average visibility in April
Sullivan, IN
- 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).
Sullivan, Indiana, USA
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