April weather forecastGreat Falls, VA
April
Weather in April
April is an enjoyable spring month in Great Falls, Virginia, with an average temperature varying between 45.9°F (7.7°C) and 64.9°F (18.3°C).Temperature
The start of April brings a shift in the average high-temperature, increasing from March's fresh 52.5°F (11.4°C) to a comfortable 64.9°F (18.3°C). In Great Falls, the April nights cool down to an average low of 45.9°F (7.7°C).Humidity
The average relative humidity in April is 71%.Rainfall
In Great Falls, during April, the rain falls for 14.8 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, there are 152.8 rainfall days, and 27.64" (702mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall in Great Falls. April is the last month it regularly snows. During 0.1 snowfall days, in April, Great Falls aggregates 0.04" (1mm) of snow. In Great Falls, during the entire year, snow falls for 13.9 days and aggregates up to 7.2" (183mm) of snow.Daylight
In April, the average length of the day is 13h and 15min.On the first day of April, sunrise is at 6:52 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 8:01 pm EDT.
Sunshine
The average sunshine in April is 8.8h.UV index
The average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 4 during April translates into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. To guard against the harmful effects of the Sun, minimize exposure during midday. Always opt for UVA and UVB-resistant sunglasses on radiant days. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Great Falls, VA
- Average high temperature in April: 64.9°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in April: 45.9°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in April
Great Falls, VA
- 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
Great Falls, VA
- Average wind speed in April: 7.6mph
The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in April
Great Falls, VA
- Average humidity in April: 71%
The months with the highest relative humidity are October and December (76%).
The month with the lowest relative humidity is July (69%).
Average rainfall in April
Great Falls, VA
- Average rainfall in April: 2.24"
The wettest month (with the highest rainfall) is August (3.39").
The driest month (with the least rainfall) is January (1.77").
Average rainfall days in April
Great Falls, VA
- Average rainfall days in April: 14.8 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in April
Great Falls, VA
- Average snowfall in April: 0.04"
The month with the highest snowfall is January (2.28").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Great Falls, VA
- 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
Great Falls, VA
- Average daylight in April: 13h and 18min
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 48min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 0min).
Average sunshine days in April
Great Falls, VA
- Average sunshine days in April: 13.3 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in April
Great Falls, VA
- 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
Great Falls, VA
- 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 31).
Average visibility in April
Great Falls, VA
- 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).
