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 from March to April brings a temperature rise, with average high-temperatures increasing from a cool 52.3°F (11.3°C) to an enjoyable 64.9°F (18.3°C). The average temperature during April nights dips to a frosty 46.8°F (8.2°C).Humidity
In April, the average relative humidity is 70%.Rainfall
In Stephen Knolls, in April, it is raining for 15.3 days, with typically 2.52" (64mm) of accumulated precipitation. In Stephen Knolls, during the entire year, the rain falls for 154.8 days and collects up to 30.28" (769mm) of precipitation.Snowfall
Months with snowfall in Stephen Knolls are January through April, November and December. April is the last month it regularly snows. During 0.1 snowfall days, in April, Stephen Knolls aggregates 0.08" (2mm) of snow. Throughout the year, in Stephen Knolls, there are 15 snowfall days, and 9.17" (233mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 15min.On the first day of the month, sunrise is at 6:51 am and sunset at 7:32 pm. On the last day of April, sunrise is at 6:10 am and sunset at 8:00 pm EDT.
Sunshine
In Stephen Knolls, Maryland, the average sunshine in April is 8.7h.UV index
In April, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: An average UV index of 4 in April transforms into this advice:
Undertake protective steps - Preventing sun damage is advised. The solar radiation around mid-day is intense; avoid the Sun and stay safe. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures?
What is the average humidity in April?
How many days does it rain in April?
What is the last month it snows?
How many hours of daylight does Stephen Knolls have in April?
When is the sunrise / sunset in April?
How many hours of sunshine does Stephen Knolls have in April?
What is the UV index intensity in April?
Average temperature in April
Stephen Knolls, MD
- Average high temperature in April: 64.9°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in April: 46.8°F
The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).
Average pressure in April
Stephen Knolls, 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 (29.95"Hg).
Average wind speed in April
Stephen Knolls, MD
- Average wind speed in April: 8mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in April
Stephen Knolls, MD
- Average humidity in April: 70%
The months with the highest relative humidity are May, October and December (75%).
The month with the lowest relative humidity is July (69%).
Average rainfall in April
Stephen Knolls, MD
- Average rainfall in April: 2.52"
The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in April
Stephen Knolls, MD
- Average rainfall days in April: 15.3 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in April
Stephen Knolls, MD
- Average snowfall in April: 0.08"
The month with the highest snowfall is January (2.87").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Stephen Knolls, MD
- Average snowfall days in April: 0.1 days
The month with the highest number of snowfall days is January (4.6 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
Stephen Knolls, 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 30min).
- Average sunshine in April: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in April
Stephen Knolls, MD
- Average sunshine days in April: 13.4 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (12 days).
Average UV index in April
Stephen Knolls, 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, November and December (UV index 2).
Average cloud cover in April
Stephen Knolls, MD
- Average cloud cover in April: 42
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in April
Stephen Knolls, 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).
Stephen Knolls, Maryland, USA
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