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 cold 40.8°F (4.9°C) in March to a cool 50.5°F (10.3°C). The low-temperature averages to a cold 40.6°F (4.8°C) during the nights of April.Humidity
In April, the average relative humidity is 79%.Rainfall
In April, the rain falls for 16.2 days. Throughout April, 3.27" (83mm) of precipitation is accumulated. In Castalia, during the entire year, the rain falls for 160.4 days and collects up to 32.99" (838mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. April is the last month it regularly snows in Castalia. During 1.2 snowfall days, in April, Castalia aggregates 0.59" (15mm) of snow. Throughout the year, in Castalia, there are 41.3 snowfall days, and 10.87" (276mm) of snow is accumulated.Daylight
In Castalia, the average length of the day in April is 13h and 22min.On the first day of April in Castalia, sunrise is at 7:12 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 8:28 pm EDT.
Sunshine
The average sunshine in April is 7.4h.UV index
In Castalia, the average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 3 during April translates into these guidelines:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
What are April temperatures in Castalia?
What is the average humidity in April in Castalia?
How many days does it rain in April in Castalia?
What is the last month it snows in Castalia?
How many hours of daylight does Castalia have in April?
What time are sunrise and sunset in April in Castalia?
How long on average sun shines in April in Castalia?
How high is the UV index in April in Castalia?
Average temperature in April
Castalia, OH
- Average high temperature in April: 50.5°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in April: 40.6°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in April
Castalia, OH
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Castalia, OH
- Average wind speed in April: 11.1mph
The windiest month (with the highest average wind speed) is January (12.6mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in April
Castalia, OH
- Average humidity in April: 79%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in April
Castalia, OH
- Average rainfall in April: 3.27"
The wettest month (with the highest rainfall) is June (4.41").
The driest months (with the least rainfall) are February and December (1.61").
Average rainfall days in April
Castalia, OH
- Average rainfall days in April: 16.2 days
The month with the highest number of rainy days is May (17.8 days).
The months with the least rainy days are January and February (7.8 days).
Average snowfall in April
Castalia, OH
- Average snowfall in April: 0.59"
The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Castalia, OH
- Average snowfall days in April: 1.2 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, September and October (0 days).
Average daylight in April /
Average sunshine in April
Castalia, OH
- 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 2min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in April
Castalia, OH
- Average sunshine days in April: 11.1 days
The month with the most sunshine days is March (14.1 days).
The month with the least sunshine days is February (9.6 days).
Average UV index in April
Castalia, OH
- 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
Castalia, OH
- Average cloud cover in April: 47
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in April
Castalia, OH
- 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).
Castalia, Ohio, USA
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