Climate and monthly weather forecastNorth Haven, CT
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in North Haven, Connecticut, with an average temperature fluctuating between 34.5°F (1.4°C) and 23.4°F (-4.8°C). With average high and low temperatures of 34.5°F (1.4°C) and 23.4°F (-4.8°C) respectively, January is North Haven's coldest month. Weather in January »Weather in February
February, the last month of the winter in North Haven, is also a wintry month, with an average temperature fluctuating between 24.3°F (-4.3°C) and 37°F (2.8°C). February experiences an average high-temperature of a still cold 37°F (2.8°C), barely different from January's 34.5°F (1.4°C). Weather in February »Weather in March
The first month of the spring, March, is a frosty month in North Haven, Connecticut, with an average temperature ranging between min 31.5°F (-0.3°C) and max 44.2°F (6.8°C). In March, the meteorological conditions subtly change with the average high-temperature edging from a wintry 37°F (2.8°C) in February to a frosty 44.2°F (6.8°C). Weather in March »Weather in April
April is a moderate spring month in North Haven, Connecticut, with an average temperature fluctuating between 41.4°F (5.2°C) and 55.9°F (13.3°C). With the beginning of April, North Haven's average high-temperature sees an increase, transitioning from a frosty 44.2°F (6.8°C) in March to a mild 55.9°F (13.3°C). Weather in April »Weather in May
May, the last month of the spring in North Haven, is a refreshing month, with an average temperature fluctuating between 50.5°F (10.3°C) and 66.9°F (19.4°C). North Haven's weather in May shows a rise in the average high-temperature, moving up from April's mild 55.9°F (13.3°C) to a still refreshing 66.9°F (19.4°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in North Haven, Connecticut, with an average temperature fluctuating between 58.6°F (14.8°C) and 75.4°F (24.1°C). The shift from May to June is marked by a slight increase in the average high-temperature, moving from a comfortable 66.9°F (19.4°C) to a warm 75.4°F (24.1°C). Weather in June »Weather in July
July, like June, in North Haven, Connecticut, is another warm summer month, with temperature in the range of an average low of 65.5°F (18.6°C) and an average high of 81.7°F (27.6°C). North Haven experiences its highest average temperatures in July, reaching a peak of 81.7°F (27.6°C) and a minimum of 65.5°F (18.6°C). In July, the average heat index is evaluated at a tropical 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in North Haven, is also a moderately hot month, with an average temperature ranging between min 64.4°F (18°C) and max 80.1°F (26.7°C). North Haven greets August with an average high-temperature of a still warm 80.1°F (26.7°C), marking a slight deviation from the preceding month. Weather in August »Weather in September
The first month of the autumn, September, is also an agreeable month in North Haven, Connecticut, with an average temperature varying between 73.2°F (22.9°C) and 58.1°F (14.5°C). In the transition to September, North Haven observes a minor drop in the average high-temperature, shifting from a moderately hot 80.1°F (26.7°C) in August to an agreeable 73.2°F (22.9°C). Weather in September »Weather in October
October, like September, in North Haven, Connecticut, is another enjoyable autumn month, with an average temperature fluctuating between 61.7°F (16.5°C) and 48.6°F (9.2°C). October's onset brings a reduction in the average high-temperature, from an agreeable 73.2°F (22.9°C) in September to a comfortable 61.7°F (16.5°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in North Haven, Connecticut, with an average temperature ranging between max 49.5°F (9.7°C) and min 37.9°F (3.3°C). The shift to November brings a decrease in the average high-temperature, falling from a comfortable 61.7°F (16.5°C) in October to a chilly 49.5°F (9.7°C). Weather in November »Weather in December
December, the first month of the winter in North Haven, is also a wintry month, with an average temperature varying between 30.4°F (-0.9°C) and 40.3°F (4.6°C). Setting in of December comes with a decrease in the average high-temperature, moving from a frosty 49.5°F (9.7°C) in November to a cold 40.3°F (4.6°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
North Haven, CT
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (34.5°F).
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure
North Haven, CT
- Average pressure in January:
30.04"Hg - Average pressure in February:
30.02"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.06"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
North Haven, CT
- Average wind speed in January:
9.2mph - Average wind speed in February:
8.9mph - Average wind speed in March:
9.1mph - Average wind speed in April:
8.5mph - Average wind speed in May:
7.1mph - Average wind speed in June:
6.4mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity
North Haven, CT
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall
North Haven, CT
- Average rainfall in January:
0.87" - Average rainfall in February:
0.79" - Average rainfall in March:
0.98" - Average rainfall in April:
1.26" - Average rainfall in May:
1.22" - Average rainfall in June:
1.42"
- Average rainfall in July:
1.69" - Average rainfall in August:
1.46" - Average rainfall in September:
1.02" - Average rainfall in October:
1.65" - Average rainfall in November:
1.3" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is July (1.69").
The driest month (with the least rainfall) is February (0.79").
Average rainfall days
North Haven, CT
- Average rainfall days in January:
7.2 days - Average rainfall days in February:
7.9 days - Average rainfall days in March:
9.8 days - Average rainfall days in April:
12.2 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
14 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
14.5 days - Average rainfall days in September:
10.8 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
7.3 days - Average rainfall days in December:
9.4 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is January (7.2 days).
Average snowfall
North Haven, CT
- Average snowfall in January:
0.71" - Average snowfall in February:
1.14" - Average snowfall in March:
0.87" - Average snowfall in April:
0.08" - Average snowfall in May:
0.2" - Average snowfall in June:
0"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
North Haven, CT
- Average snowfall days in January:
4.7 days - Average snowfall days in February:
6.7 days - Average snowfall days in March:
4.3 days - Average snowfall days in April:
0.5 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.9 days - Average snowfall days in December:
3.3 days
The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
North Haven, CT
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 12min
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 12min).
- Average sunshine in January:
5h and 6min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 18min - Average sunshine in May:
8h and 30min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 24min - Average sunshine in September:
8h and 48min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 42min - Average sunshine in December:
4h and 48min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
North Haven, CT
- Average sunshine days in January:
20.8 days - Average sunshine days in February:
16.3 days - Average sunshine days in March:
17.5 days - Average sunshine days in April:
15.7 days - Average sunshine days in May:
14.7 days - Average sunshine days in June:
13.2 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
13.5 days - Average sunshine days in September:
17.3 days - Average sunshine days in October:
17.7 days - Average sunshine days in November:
20.5 days - Average sunshine days in December:
18.4 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is June (13.2 days).
Average UV index
North Haven, CT
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
North Haven, CT
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility
North Haven, CT
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).





