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
Johnsville experiences a temperature shift with the start of April, with average high-temperatures moving from a fresh 50°F (10°C) in March to an enjoyable 62.2°F (16.8°C). During April, Johnsville's temperature averages to a chilly 43.7°F (6.5°C) at night.Humidity
January, April, July and November, with an average relative humidity of 75%, are the least humid months.Rainfall
In April, the rain falls for 11.9 days. Throughout April, 1.18" (30mm) of precipitation is accumulated. In Johnsville, during the entire year, the rain falls for 130.3 days and collects up to 15.47" (393mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. April is the last month it regularly snows. During 0.3 snowfall days, in April, Johnsville aggregates 0.24" (6mm) of snow. In Johnsville, during the entire year, snow falls for 16 days and aggregates up to 4.13" (105mm) of snow.Daylight
The average length of the day in April is 13h and 16min.On the first day of April, sunrise is at 6:51 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 8:02 pm EDT.
Sunshine
The average sunshine in April is 8.5h.UV index
In April, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: An average maximum UV index of 4 in April leads to these recommendations:
Guard yourself - Avoiding sunburn is suggested. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. During bright days, sunglasses that offer UVA and UVB defense are recommended. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in April?
What are the least humid months?
What is the average humidity in April in Johnsville?
How many days does it rain in April?
What is the last month it snows?
How many hours of daylight does Johnsville have in April?
When is the sunrise / sunset in April?
How long on average sun shines in April?
What is the UV index intensity in April?
Average temperature in April
Johnsville, MD
- Average high temperature in April: 62.2°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in April: 43.7°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in April
Johnsville, MD
- Average pressure in April: 29.99"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in April
Johnsville, MD
- Average wind speed in April: 8.5mph
The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in April
Johnsville, MD
- Average humidity in April: 75%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January, April, July and November (75%).
Average rainfall in April
Johnsville, MD
- Average rainfall in April: 1.18"
The wettest month (with the highest rainfall) is August (2.48").
The driest month (with the least rainfall) is February (0.79").
Average rainfall days in April
Johnsville, MD
- Average rainfall days in April: 11.9 days
The month with the highest number of rainy days is August (15.1 days).
The months with the least rainy days are January and February (6.8 days).
Average snowfall in April
Johnsville, MD
- Average snowfall in April: 0.24"
The month with the highest snowfall is January (1.34").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Johnsville, MD
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is February (4.9 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
Johnsville, MD
- 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 24min).
- Average sunshine in April: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in April
Johnsville, MD
- Average sunshine days in April: 16.2 days
The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is May (12.9 days).
Average UV index in April
Johnsville, MD
- 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
Johnsville, MD
- Average cloud cover in April: 44
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in April
Johnsville, MD
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Johnsville, Maryland, USA
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