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, Grafton's average high-temperature experiences a rise, moving from March's frosty 43.3°F (6.3°C) to a refreshing 55.9°F (13.3°C). An average low-temperature of 39°F (3.9°C) marks the month of April in Grafton, Massachusetts.Humidity
April is the least humid month in Grafton, with an average relative humidity of 71%.Rainfall
In April, the rain falls for 14.5 days. Throughout April, 2.83" (72mm) of precipitation is accumulated. In Grafton, during the entire year, the rain falls for 152.2 days and collects up to 30.67" (779mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Grafton, in April, snow falls for 1.4 days, with typically accumulated 1.18" (30mm) of snow. Throughout the year, there are 32.5 snowfall days, and 18.78" (477mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 23min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:12 pm. On the last day of April, in Grafton, sunrise is at 5:42 am and sunset at 7:45 pm EDT.
Sunshine
In April, the average sunshine in Grafton is 8.1h.UV index
The average daily maximum UV index in April is 3. 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 UV index of 3 during April translates into the following guidance:
Prioritize safety - Suggestions to prevent sun damage are offered. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
What are the temperatures in Grafton in April?
What is the least humid month in Grafton?
What is the average humidity in April in Grafton?
How much does it rain in Grafton in April?
How much does it snow in Grafton in April?
How many hours of daylight does Grafton have in April?
When is the sunrise / sunset in April in Grafton?
How long on average sun shines in April in Grafton?
How high is the UV index in April in Grafton?
Average temperature in April
Grafton, MA
- Average high temperature in April: 55.9°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in April: 39°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in April
Grafton, 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 (29.93"Hg).
Average wind speed in April
Grafton, MA
- Average wind speed in April: 8.4mph
The windiest months (with the highest average wind speed) are January, February and March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in April
Grafton, MA
- Average humidity in April: 71%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).
Average rainfall in April
Grafton, MA
- Average rainfall in April: 2.83"
The wettest month (with the highest rainfall) is December (3.15").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in April
Grafton, MA
- Average rainfall days in April: 14.5 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in April
Grafton, MA
- Average snowfall in April: 1.18"
The month with the highest snowfall is March (4.92").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in April
Grafton, MA
- Average snowfall days in April: 1.4 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in April /
Average sunshine in April
Grafton, MA
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in April: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in April
Grafton, MA
- Average sunshine days in April: 13.5 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in April
Grafton, 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
Grafton, 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 36).
Average visibility in April
Grafton, MA
- Average visibility in April: 6mi
The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).
Grafton, Massachusetts, USA
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