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
The rise of average high-temperatures is seen in April, with an increase from a frosty 45°F (7.2°C) in March to a refreshing 55.4°F (13°C). During the nights in April, an average low-temperature of 43.5°F (6.4°C) is observed.Humidity
In April, the average relative humidity is 72%.Rainfall
In Old Greenwich, during April, the rain falls for 15.9 days and regularly aggregates up to 3.15" (80mm) of precipitation. Throughout the year, there are 166.6 rainfall days, and 38.07" (967mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. April is the last month it regularly snows in Old Greenwich. During 0.3 snowfall days, in April, Old Greenwich aggregates 0.08" (2mm) of snow. In Old Greenwich, during the entire year, snow falls for 24.8 days and aggregates up to 9.33" (237mm) of snow.Ocean temperature
In Old Greenwich, Connecticut, in April, the average water temperature is 44.2°F (6.8°C).Note: Dipping into 44.2°F (6.8°C) below 50°F (10°C) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 55.4°F (13°C) can be jarring.
Daylight
The average length of the day in April in Old Greenwich is 13h and 20min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:19 pm. On the last day of April, sunrise is at 5:52 am and sunset at 7:50 pm EDT.
Sunshine
In April, the average sunshine is 8.2h.UV index
In Old Greenwich, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In April, the maximum UV index of 3 transforms into these recommendations:
Make use of precautions - It is urged to ward off sun damage. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature?
What is the average humidity in April?
How much does it rain in April?
What is the last month it snows?
What is the ocean temperature in April?
What is the average length of the day in April?
When is the sunrise / sunset in April in Old Greenwich?
How many hours of sunshine does Old Greenwich have in April?
What is the UV index reading in April?
Average temperature in April
Old Greenwich, CT
- Average high temperature in April: 55.4°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in April: 43.5°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in April
Old Greenwich, CT
- Average pressure in April: 29.98"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in April
Old Greenwich, CT
- Average wind speed in April: 9.1mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in April
Old Greenwich, CT
- Average humidity in April: 72%
The months with the highest relative humidity are February, May, June and December (75%).
The month with the lowest relative humidity is August (71%).
Average rainfall in April
Old Greenwich, CT
- Average rainfall in April: 3.15"
The wettest month (with the highest rainfall) is July (4.13").
The driest month (with the least rainfall) is January (2.44").
Average rainfall days in April
Old Greenwich, CT
- Average rainfall days in April: 15.9 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in April
Old Greenwich, CT
- Average snowfall in April: 0.08"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in April
Old Greenwich, CT
- Average snowfall days in April: 0.3 days
The month with the highest number of snowfall days is February (7.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in April
Old Greenwich, CT
- Average sea temperature in April: 44.3°F
The best month for swimming (with the highest average sea temperature) is August (73.1°F).
The coldest month (with the lowest average sea temperature) is February (39.5°F).
Average daylight in April /
Average sunshine in April
Old Greenwich, CT
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in April: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).
Average sunshine days in April
Old Greenwich, CT
- Average sunshine days in April: 12.2 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in April
Old Greenwich, CT
- 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
Old Greenwich, CT
- Average cloud cover in April: 45
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in April
Old Greenwich, CT
- 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).
Old Greenwich, Connecticut, USA
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