Climate and monthly weather forecastKillingworth, CT
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in Killingworth, Connecticut, with an average temperature varying between 25.5°F (-3.6°C) and 35.2°F (1.8°C). The coldest time of the year is January, with temperatures averaging a high of 35.2°F (1.8°C) and a low of 25.5°F (-3.6°C). Weather in January »Weather in February
February, the last month of the winter in Killingworth, is also an icy month, with temperature in the range of an average low of 26.2°F (-3.2°C) and an average high of 37.9°F (3.3°C). As February unfolds, the average high-temperature reaches a still wintry 37.9°F (3.3°C), hinting at a slight fluctuation from the previous month. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Killingworth, Connecticut, with an average temperature ranging between max 43.7°F (6.5°C) and min 32.5°F (0.3°C). Killingworth's weather in March shows a minor rise in the average high-temperature, moving slightly up from February's icy 37.9°F (3.3°C) to a frosty 43.7°F (6.5°C). Weather in March »Weather in April
April in Killingworth, Connecticut, is a fresh spring month, with an average temperature varying between 54.3°F (12.4°C) and 41.7°F (5.4°C). Killingworth's April weather brings a rise in high-temperatures, moving from a chilly 43.7°F (6.5°C) in March to a fresh 54.3°F (12.4°C). Weather in April »Weather in May
May, the last month of the spring in Killingworth, is an enjoyable month, with temperature in the range of an average high of 64.9°F (18.3°C) and an average low of 50.7°F (10.4°C). Killingworth sees an increase in the average high-temperature with the arrival of May, moving from April's cool 54.3°F (12.4°C) to a comfortable 64.9°F (18.3°C). Weather in May »Weather in June
June, the first month of the summer in Killingworth, is an agreeable month, with temperature in the range of an average high of 73°F (22.8°C) and an average low of 58.8°F (14.9°C). June brings a slight elevation in the average high-temperature, transitioning from May's refreshing 64.9°F (18.3°C) to an agreeable 73°F (22.8°C). Weather in June »Weather in July
July in Killingworth, Connecticut, is a warm summer month, with temperature in the range of an average low of 66.6°F (19.2°C) and an average high of 79.7°F (26.5°C). Killingworth's warmest weather arrives in July, when temperatures average a high of 79.7°F (26.5°C) and a low of 66.6°F (19.2°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Killingworth, Connecticut, with temperature in the range of an average high of 78.6°F (25.9°C) and an average low of 65.7°F (18.7°C). The advent of August denotes an average high-temperature of a still moderately hot 78.6°F (25.9°C), subtly different from July's 79.7°F (26.5°C). Weather in August »Weather in September
September, the first month of the autumn in Killingworth, is also an agreeable month, with an average temperature fluctuating between 72.3°F (22.4°C) and 59.5°F (15.3°C). In the transition to September, Killingworth observes a minor drop in the average high-temperature, shifting from a warm 78.6°F (25.9°C) in August to an agreeable 72.3°F (22.4°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Killingworth, Connecticut, with an average temperature varying between 61.9°F (16.6°C) and 50.5°F (10.3°C). As September transitions to October, the average high-temperature falls from an agreeable 72.3°F (22.4°C) to an enjoyable 61.9°F (16.6°C). Weather in October »Weather in November
November, the last month of the autumn in Killingworth, is another cool month, with an average temperature fluctuating between 50.7°F (10.4°C) and 39.9°F (4.4°C). November indicates a shift in the average high-temperature, from October's comfortable 61.9°F (16.6°C) to a cool 50.7°F (10.4°C). Weather in November »Weather in December
December, the first month of the winter in Killingworth, is still a cold month, with an average temperature varying between 32.4°F (0.2°C) and 41.9°F (5.5°C). The arrival of December corresponds with a light shift in temperature, down from a cool 50.7°F (10.4°C) in November to a cold 41.9°F (5.5°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Killingworth, CT
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (35.2°F).
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).
Average pressure
Killingworth, CT
- Average pressure in January:
30.03"Hg - Average pressure in February:
30.01"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:
30.08"Hg - Average pressure in December:
30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Killingworth, CT
- Average wind speed in January:
10.9mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.6mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
7.1mph - Average wind speed in September:
8.1mph - Average wind speed in October:
9.6mph - Average wind speed in November:
10.1mph - Average wind speed in December:
10.6mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity
Killingworth, CT
The months with the highest relative humidity are May, June and July (78%).
The month with the lowest relative humidity is April (73%).
Average rainfall
Killingworth, CT
- Average rainfall in January:
2.52" - Average rainfall in February:
2.44" - Average rainfall in March:
2.8" - Average rainfall in April:
3.23" - Average rainfall in May:
2.76" - Average rainfall in June:
2.91"
- Average rainfall in July:
3.11" - Average rainfall in August:
2.91" - Average rainfall in September:
1.93" - Average rainfall in October:
3.46" - Average rainfall in November:
3.07" - Average rainfall in December:
3.66"
The wettest month (with the highest rainfall) is December (3.66").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days
Killingworth, CT
- Average rainfall days in January:
9 days - Average rainfall days in February:
10.4 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
15.2 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
16.5 days
- Average rainfall days in July:
17 days - Average rainfall days in August:
16.4 days - Average rainfall days in September:
13 days - Average rainfall days in October:
14.6 days - Average rainfall days in November:
11 days - Average rainfall days in December:
13 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9 days).
Average snowfall
Killingworth, CT
- Average snowfall in January:
2.17" - Average snowfall in February:
2.72" - Average snowfall in March:
2.76" - Average snowfall in April:
0.08" - Average snowfall in May:
0.28" - Average snowfall in June:
0"
The month with the highest snowfall is March (2.76").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Killingworth, CT
- Average snowfall days in January:
6.3 days - Average snowfall days in February:
7 days - Average snowfall days in March:
4.7 days - Average snowfall days in April:
0.7 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:
0.1 days - Average snowfall days in November:
0.9 days - Average snowfall days in December:
4.4 days
The month with the highest number of snowfall days is February (7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Killingworth, 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 48min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 24min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 36min - Average sunshine in September:
8h and 54min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 48min
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
Killingworth, CT
- Average sunshine days in January:
16 days - Average sunshine days in February:
12.5 days - Average sunshine days in March:
13.6 days - Average sunshine days in April:
12.7 days - Average sunshine days in May:
12.2 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
11.7 days - Average sunshine days in August:
11.9 days - Average sunshine days in September:
14.2 days - Average sunshine days in October:
14.1 days - Average sunshine days in November:
17.1 days - Average sunshine days in December:
14.8 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is July (11.7 days).
Average UV index
Killingworth, 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
Killingworth, CT
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility
Killingworth, CT
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).





