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
With the onset of April, the average high-temperature slightly shifts from March's fresh 52.3°F (11.3°C) to a refreshing 64.8°F (18.2°C). Riverdale Heights experiences a mean low-temperature of 47.3°F (8.5°C) during April.Humidity
The months with the lowest humidity are April and July, with an average relative humidity of 71%.Rainfall
In Riverdale Heights, in April, it is raining for 15.9 days, with typically 2.72" (69mm) of accumulated precipitation. Throughout the year, there are 157.9 rainfall days, and 31.14" (791mm) of precipitation is accumulated.Snowfall
January through April and December are months with snowfall. April is the last month it regularly snows. During 0.2 snowfall days, in April, Riverdale Heights aggregates 0.08" (2mm) of snow. Throughout the year, in Riverdale Heights, Maryland, there are 13.5 snowfall days, and 7.2" (183mm) 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 6:50 am and sunset at 7:31 pm. On the last day of April, in Riverdale Heights, sunrise is at 6:09 am and sunset at 7:59 pm EDT.
Sunshine
In Riverdale Heights, the average sunshine in April is 8.8h.UV index
In Riverdale Heights, Maryland, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 4 during April translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
What are the temperatures in Riverdale Heights in April?
What are the least humid months in Riverdale Heights?
What is the average humidity in April in Riverdale Heights?
How many days does it rain in April in Riverdale Heights?
What is the last month it snows in Riverdale Heights?
How many hours of daylight does Riverdale Heights have in April?
What time are sunrise and sunset in April in Riverdale Heights?
How long on average sun shines in April in Riverdale Heights?
What is the UV index reading in April in Riverdale Heights?
Average temperature in April
Riverdale Heights, MD
- Average high temperature in April: 64.8°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 (39.9°F).
- Average low temperature in April: 47.3°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in April
Riverdale Heights, 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
Riverdale Heights, MD
- Average wind speed in April: 8.2mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in April
Riverdale Heights, MD
- Average humidity in April: 71%
The months with the highest relative humidity are May, October and December (76%).
The months with the lowest relative humidity are April and July (71%).
Average rainfall in April
Riverdale Heights, MD
- Average rainfall in April: 2.72"
The wettest month (with the highest rainfall) is August (3.58").
The driest month (with the least rainfall) is January (2.01").
Average rainfall days in April
Riverdale Heights, MD
- Average rainfall days in April: 15.9 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is November (9 days).
Average snowfall in April
Riverdale Heights, MD
- Average snowfall in April: 0.08"
The month with the highest snowfall is January (2.6").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days in April
Riverdale Heights, MD
- Average snowfall days in April: 0.2 days
The month with the highest number of snowfall days is January (4.1 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
Riverdale Heights, MD
- Average daylight in April: 13h and 1min
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 5min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in April
Riverdale Heights, MD
- Average sunshine days in April: 12.5 days
The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in April
Riverdale Heights, 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 and December (UV index 2).
Average cloud cover in April
Riverdale Heights, MD
- Average cloud cover in April: 41
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in April
Riverdale Heights, MD
- 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).
Riverdale Heights, Maryland, USA
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