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 sea temperature 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
An increase in the average high-temperature marks April, moving from March's cold 40.5°F (4.7°C) to a fresh 51.1°F (10.6°C). New Castle sees an average low-temperature of 38.8°F (3.8°C) during April.Humidity
April and November, with an average relative humidity of 75%, are the least humid months.Rainfall
In New Castle, during April, the rain falls for 13.8 days and regularly aggregates up to 2.48" (63mm) of precipitation. Throughout the year, there are 144.2 rainfall days, and 27.48" (698mm) of precipitation is accumulated.Snowfall
Months with snowfall in New Castle, New Hampshire, are January through April, October through December. April is the last month it regularly snows. During 1.4 snowfall days, in April, New Castle aggregates 1.22" (31mm) of snow. In New Castle, during the entire year, snow falls for 35.2 days and aggregates up to 16.97" (431mm) of snow.Ocean temperature
In New Castle, in April, the average water temperature is 42.4°F (5.8°C).Note: Unprotected swimming in 42.4°F (5.8°C) is dangerous due to potential cold shock. Especially when temperatures go below 50°F (10°C), leading to hyperventilation.
Daylight
In New Castle, the average length of the day in April is 13h and 26min.On the first day of April in New Castle, sunrise is at 6:23 am and sunset at 7:09 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 7:43 pm EDT.
Sunshine
The average sunshine in April is 8.1h.UV index
In April, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: During April, 3 as the daily maximum UV index converts into the following advice:
Heed the precautions - Suggestions to avoid sunburn are made. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures?
What are the least humid months?
What is the average humidity in April?
How many days does it rain in April?
What is the last month it snows?
What is the ocean temperature in April in New Castle?
How many hours of daylight does New Castle have in April?
When are sunrise and sunset in April?
How long on average sun shines in April?
What is the UV index intensity in April in New Castle?
Average temperature in April
New Castle, NH
- Average high temperature in April: 51.1°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in April: 38.8°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 (21.2°F).
Average pressure in April
New Castle, NH
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
New Castle, NH
- Average wind speed in April: 9.6mph
The windiest month (with the highest average wind speed) is January (11.7mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in April
New Castle, NH
- Average humidity in April: 75%
The month with the highest relative humidity is June (80%).
The months with the lowest relative humidity are April and November (75%).
Average rainfall in April
New Castle, NH
- Average rainfall in April: 2.48"
The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in April
New Castle, NH
- Average rainfall days in April: 13.8 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in April
New Castle, NH
- Average snowfall in April: 1.22"
The month with the highest snowfall is January (4.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
New Castle, NH
- Average snowfall days in April: 1.4 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in April
New Castle, NH
- Average sea temperature in April: 42.4°F
The best month for swimming (with the highest average sea temperature) is August (65.6°F).
The coldest month (with the lowest average sea temperature) is March (38.5°F).
Average daylight in April /
Average sunshine in April
New Castle, 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 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in April
New Castle, NH
- Average sunshine days in April: 13.2 days
The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in April
New Castle, NH
- Average UV index in April: 3
The months with the highest UV index are 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
New Castle, NH
- 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 29).
Average visibility in April
New Castle, NH
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
New Castle, New Hampshire, USA
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