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
Glenallen's transition into April is marked by a temperature shift, moving from a fresh 52°F (11.1°C) in March to a refreshing 64.2°F (17.9°C). In Glenallen, the nighttime temperature averages to a frosty 46°F (7.8°C) during April.Humidity
The average relative humidity in April is 72%.Rainfall
In Glenallen, in April, it is raining for 16.3 days, with typically 2.87" (73mm) of accumulated precipitation. Throughout the year, there are 160.9 rainfall days, and 32.99" (838mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. April is the last month it regularly snows. During 0.2 snowfall days, in April, Glenallen aggregates 0.28" (7mm) of snow. In Glenallen, during the entire year, snow falls for 17.1 days and aggregates up to 10.2" (259mm) of snow.Daylight
The average length of the day in April is 13h and 15min.On the first day of April, sunrise is at 6:51 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 8:00 pm EDT.
Sunshine
In Glenallen, the average sunshine in April is 8.8h.UV index
In Glenallen, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index, 4 during April, leads to the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in April?
What is the average humidity in April?
How much does it rain in April?
What is the last month it snows?
What is the average length of the day in April?
What time are sunrise and sunset in April?
How many hours of sunshine does Glenallen have in April?
What is the UV index reading in April in Glenallen?
Average temperature in April
Glenallen, MD
- Average high temperature in April: 64.2°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in April: 46°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in April
Glenallen, 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
Glenallen, 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 (5.1mph).
Average humidity in April
Glenallen, MD
- Average humidity in April: 72%
The months with the highest relative humidity are May, October and December (76%).
The month with the lowest relative humidity is July (70%).
Average rainfall in April
Glenallen, MD
- Average rainfall in April: 2.87"
The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (2.17").
Average rainfall days in April
Glenallen, MD
- Average rainfall days in April: 16.3 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in April
Glenallen, MD
- Average snowfall in April: 0.28"
The months with the highest snowfall are January and March (3.03").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Glenallen, MD
- Average snowfall days in April: 0.2 days
The months with the highest number of snowfall days are January and February (5.1 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
Glenallen, 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in April
Glenallen, MD
- Average sunshine days in April: 11.9 days
The month with the most sunshine days is November (19.4 days).
The months with the least sunshine days are May and July (11 days).
Average UV index in April
Glenallen, 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
Glenallen, 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 31).
Average visibility in April
Glenallen, 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).
Glenallen, Maryland, USA
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