April weather forecastNewcastle, ME
April
Weather in April
April in Newcastle, Maine, is a chilly spring month, with temperature in the range of an average high of 47.8°F (8.8°C) and an average low of 36°F (2.2°C).Temperature
The start of April brings a rise in the average high-temperature, moving from a wintry 37.6°F (3.1°C) in March to a chilly 47.8°F (8.8°C). Throughout the nights in April, an average low-temperature of 36°F (2.2°C) is noted.Humidity
In Newcastle, the average relative humidity in April is 78%.Rainfall
In Newcastle, during April, the rain falls for 15.3 days and regularly aggregates up to 2.99" (76mm) of precipitation. Throughout the year, there are 144.1 rainfall days, and 29.29" (744mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. April is the last month it regularly snows in Newcastle. During 2.6 snowfall days, in April, Newcastle aggregates 1.93" (49mm) of snow. In Newcastle, during the entire year, snow falls for 40 days and aggregates up to 18.27" (464mm) of snow.Daylight
In Newcastle, the average length of the day in April is 13h and 29min.On the first day of April, sunrise is at 6:17 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 5:29 am and sunset at 7:40 pm EDT.
Sunshine
In Newcastle, the average sunshine in April is 7.5h.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 exposure to the Sun's UV rays for ordinary individuals.Note: In April, the UV index of 3 transforms into the following advice:
Ensure safety - Recommendations to avert sunburn are presented. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Newcastle, ME
- Average high temperature in April: 47.8°F
The warmest month (with the highest average high temperature) is August (72.7°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in April: 36°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in April
Newcastle, ME
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in April
Newcastle, ME
- Average wind speed in April: 10.1mph
The windiest month (with the highest average wind speed) is January (11.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in April
Newcastle, ME
- Average humidity in April: 78%
The months with the highest relative humidity are June and July (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall in April
Newcastle, ME
- Average rainfall in April: 2.99"
The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is July (1.57").
Average rainfall days in April
Newcastle, ME
- Average rainfall days in April: 15.3 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in April
Newcastle, ME
- Average snowfall in April: 1.93"
The month with the highest snowfall is January (4.37").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Newcastle, ME
- Average snowfall days in April: 2.6 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Newcastle, ME
- Average daylight in April: 13h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in April: 7h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in April
Newcastle, ME
- Average sunshine days in April: 11.4 days
The month with the most sunshine days is September (18.3 days).
The month with the least sunshine days is April (11.4 days).
Average UV index in April
Newcastle, ME
- Average UV index in April: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in April
Newcastle, ME
- Average cloud cover in April: 51
The months with the most cloud cover are February, March, April and December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in April
Newcastle, ME
- 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).





