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
April shows a rise in the average high-temperature, moving from March's cold 42.3°F (5.7°C) to a refreshing 55.6°F (13.1°C). Groton observes an average nighttime low-temperature of 38.1°F (3.4°C) during the month of April.Humidity
April is the least humid month, with an average relative humidity of 71%.Rainfall
In Groton, in April, during 14.5 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. Throughout the year, there are 142.2 rainfall days, and 26.97" (685mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Groton, in April, during 1.6 snowfall days, 1.69" (43mm) of snow is typically accumulated. In Groton, Massachusetts, during the entire year, snow falls for 32.6 days and aggregates up to 22.99" (584mm) of snow.Daylight
In Groton, the average length of the day in April is 13h and 25min.On the first day of April, sunrise is at 6:27 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 7:45 pm EDT.
Sunshine
In April, the average sunshine is 8.1h.UV index
In April, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In April, a regular UV index of 3 translates into these guidelines:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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 in Groton?
What is the average humidity in April?
How many days does it rain in April?
How much does it snow in April?
How many hours of daylight does Groton have in April?
When is the sunrise / sunset in April?
How many hours of sunshine does Groton have in April?
What is the UV index reading in April?
Average temperature in April
Groton, MA
- Average high temperature in April: 55.6°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in April: 38.1°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in April
Groton, MA
- Average pressure in April: 29.97"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Groton, MA
- Average wind speed in April: 7.8mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in April
Groton, MA
- Average humidity in April: 71%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (71%).
Average rainfall in April
Groton, MA
- Average rainfall in April: 2.64"
The wettest month (with the highest rainfall) is December (2.8").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days in April
Groton, MA
- Average rainfall days in April: 14.5 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is February (7.7 days).
Average snowfall in April
Groton, MA
- Average snowfall in April: 1.69"
The month with the highest snowfall is February (6.3").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Groton, MA
- Average snowfall days in April: 1.6 days
The month with the highest number of snowfall days is January (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Groton, MA
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in April: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in April
Groton, MA
- Average sunshine days in April: 13.6 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (13.5 days).
Average UV index in April
Groton, MA
- Average UV index in April: 3
The months with the highest UV index are June, July and August (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
Groton, MA
- Average cloud cover in April: 47
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in April
Groton, MA
- Average visibility in April: 6mi
The months with the highest visibility are April, October, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August and September (5mi).
Groton, Massachusetts, USA
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