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
As March gives way to April, the average high-temperature displays an increase, moving from a chilly 48°F (8.9°C) to a mild 60.4°F (15.8°C). In Grantham, the average nighttime temperature during April is a cold 42.3°F (5.7°C).Humidity
April is the least humid month, with an average relative humidity of 75%.Rainfall
In Grantham, during April, the rain falls for 14.3 days and regularly aggregates up to 1.46" (37mm) of precipitation. In Grantham, during the entire year, the rain falls for 137.7 days and collects up to 18.43" (468mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows in Grantham. During 0.6 snowfall days, in April, Grantham aggregates 0.16" (4mm) of snow. Throughout the year, in Grantham, there are 23.7 snowfall days, and 8.62" (219mm) of snow is accumulated.Daylight
The average length of the day in April is 13h and 18min.On the first day of the month, sunrise is at 6:50 am and sunset at 7:32 pm. On the last day of April, sunrise is at 6:07 am and sunset at 8:02 pm EDT.
Sunshine
In April, the average sunshine is 8.4h.UV index
In Grantham, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index, 3 in April, converts into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Always opt for UVA and UVB-resistant sunglasses on radiant days. Heads up! The UV radiation from the Sun can almost be 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 least humid month?
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 Grantham have in April?
When is the sunrise / sunset in April?
How many hours of sunshine does Grantham have in April?
What is the UV index intensity in April?
Average temperature in April
Grantham, PA
- Average high temperature in April: 60.4°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in April: 42.3°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in April
Grantham, PA
- 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
Grantham, PA
- Average wind speed in April: 8.4mph
The windiest months (with the highest average wind speed) are February, March and April (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in April
Grantham, PA
- Average humidity in April: 75%
The months with the highest relative humidity are February and May (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in April
Grantham, PA
- Average rainfall in April: 1.46"
The wettest months (with the highest rainfall) are May and July (2.05").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in April
Grantham, PA
- Average rainfall days in April: 14.3 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in April
Grantham, PA
- Average snowfall in April: 0.16"
The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Grantham, PA
- Average snowfall days in April: 0.6 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Grantham, PA
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in April: 8h and 2min
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 36min).
Average sunshine days in April
Grantham, PA
- Average sunshine days in April: 13.3 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (12.2 days).
Average UV index in April
Grantham, PA
- Average UV index in April: 3
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in April
Grantham, PA
- Average cloud cover in April: 44
The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in April
Grantham, PA
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Grantham, Pennsylvania, USA
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