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 transition to April introduces an increase in the average high-temperature, shifting from a chilly 47.8°F (8.8°C) in March to a refreshing 59.4°F (15.2°C). Smithson's average low-temperature is measured at a chilly 43.5°F (6.4°C) during April.Humidity
The average relative humidity in April is 75%.Rainfall
In Smithson, Indiana, in April, it is raining for 16.1 days, with typically 2.83" (72mm) of accumulated precipitation. Throughout the year, there are 157.1 rainfall days, and 23.11" (587mm) of precipitation is accumulated.Snowfall
Months with snowfall in Smithson are January through April, November and December. April is the last month it regularly snows. During 1.7 snowfall days, in April, Smithson aggregates 0.55" (14mm) of snow. In Smithson, during the entire year, snow falls for 42 days and aggregates up to 10.16" (258mm) of snow.Daylight
In Smithson, the average length of the day in April is 13h and 20min.On the first day of April in Smithson, sunrise is at 7:29 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 8:43 pm EDT.
Sunshine
In April, the average sunshine is 7h.UV index
The average daily maximum UV index in April in Smithson is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A daily maximum UV index of 4 in April translates into the following instructions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Smithson in April?
What is the average humidity in April in Smithson?
How many days does it rain in April in Smithson?
What is the last month it snows in Smithson?
What is the average length of the day in April in Smithson?
What time are sunrise and sunset in April in Smithson?
How long on average sun shines in April in Smithson?
How high is the UV index in April in Smithson?
Average temperature in April
Smithson, IN
- Average high temperature in April: 59.4°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in April: 43.5°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in April
Smithson, IN
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Smithson, IN
- Average wind speed in April: 9.9mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in April
Smithson, IN
- Average humidity in April: 75%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
Smithson, IN
- Average rainfall in April: 2.83"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is February (1.14").
Average rainfall days in April
Smithson, IN
- Average rainfall days in April: 16.1 days
The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in April
Smithson, IN
- Average snowfall in April: 0.55"
The month with the highest snowfall is January (2.95").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Smithson, IN
- Average snowfall days in April: 1.7 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
Smithson, IN
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in April: 7h and 0min
The months with the most sunshine are June and July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in April
Smithson, IN
- Average sunshine days in April: 10.9 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (9.4 days).
Average UV index in April
Smithson, IN
- Average UV index in April: 4
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
Smithson, IN
- Average cloud cover in April: 47
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in April
Smithson, IN
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Smithson, Indiana, USA
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