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 Merrimack, New Hampshire, transitions into April, the average high-temperature is observed to rise from a cold 41.2°F (5.1°C) in March to a cool 55°F (12.8°C). Merrimack experiences an average temperature drop to a cold 37.4°F (3°C) during April nights.Humidity
April is the least humid month, with an average relative humidity of 72%.Rainfall
In Merrimack, in April, it is raining for 9.8 days, with typically 1.06" (27mm) of accumulated precipitation. Throughout the year, in Merrimack, there are 104.4 rainfall days, and 12.95" (329mm) of precipitation is accumulated.Snowfall
Months with snowfall in Merrimack are January through May, October through December. In Merrimack, during April, snow falls for 1.1 days and regularly aggregates up to 0.91" (23mm) of snow. In Merrimack, New Hampshire, during the entire year, snow falls for 26.1 days and aggregates up to 11.54" (293mm) of snow.Daylight
The average length of the day in April is 13h and 25min.On the first day of April in Merrimack, sunrise is at 6:26 am and sunset at 7:12 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 7:45 pm EDT.
Sunshine
In Merrimack, the average sunshine in April is 8.1h.UV index
In Merrimack, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In April, the maximum UV index of 3 suggests these recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Merrimack?
What is the least humid month in Merrimack?
What is the average humidity in April in Merrimack?
How much does it rain in Merrimack in April?
How many days does it snow in April in Merrimack?
What is the average length of the day in April in Merrimack?
When is the sunrise / sunset in April in Merrimack?
How long on average sun shines in April in Merrimack?
What is the UV index reading in April in Merrimack?
Average temperature in April
Merrimack, NH
- Average high temperature in April: 55°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 (30.6°F).
- Average low temperature in April: 37.4°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in April
Merrimack, NH
- Average pressure in April: 29.96"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
Merrimack, NH
- Average wind speed in April: 7.6mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in April
Merrimack, NH
- Average humidity in April: 72%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).
Average rainfall in April
Merrimack, NH
- Average rainfall in April: 1.06"
The wettest month (with the highest rainfall) is October (1.38").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in April
Merrimack, NH
- Average rainfall days in April: 9.8 days
The month with the highest number of rainy days is June (12.1 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in April
Merrimack, NH
- Average snowfall in April: 0.91"
The month with the highest snowfall is December (2.99").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Merrimack, NH
- Average snowfall days in April: 1.1 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Merrimack, NH
- 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in April
Merrimack, NH
- Average sunshine days in April: 18.3 days
The months with the most sunshine days are January and December (21.3 days).
The month with the least sunshine days is June (16.7 days).
Average UV index in April
Merrimack, NH
- 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
Merrimack, NH
- Average cloud cover in April: 47
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in April
Merrimack, NH
- Average visibility in April: 6mi
The months with the highest visibility are January, April, November and December (6mi).
The months with the lowest visibility are February, March, May, June, July, August, September and October (5mi).
Merrimack, New Hampshire, USA
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