Climate and monthly weather forecastColchester, CT
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Colchester, Connecticut, with temperature in the range of an average high of 34.3°F (1.3°C) and an average low of 22.8°F (-5.1°C). Colchester experiences its lowest average temperatures in January, reaching a peak of 34.3°F (1.3°C) and a minimum of 22.8°F (-5.1°C). Weather in January »Weather in February
The last month of the winter, February, is also a wintry month in Colchester, Connecticut, with an average temperature ranging between max 37°F (2.8°C) and min 23.4°F (-4.8°C). Colchester records a slight change with February's average high-temperatures adjusting to a still wintry 37°F (2.8°C) from January's 34.3°F (1.3°C). Weather in February »Weather in March
March, the first month of the spring in Colchester, is a frosty month, with an average temperature ranging between min 30.4°F (-0.9°C) and max 44.4°F (6.9°C). A minor escalation in the average high-temperature is seen with the onset of March, moving from an icy 37°F (2.8°C) in February to a chilly 44.4°F (6.9°C). Weather in March »Weather in April
April in Colchester, Connecticut, is a moderate spring month, with temperature in the range of an average low of 40.3°F (4.6°C) and an average high of 56.5°F (13.6°C). The start of April signals an increase in the average high-temperature, moving from a chilly 44.4°F (6.9°C) in March to a mild 56.5°F (13.6°C). Weather in April »Weather in May
The last month of the spring, May, is an enjoyable month in Colchester, Connecticut, with an average temperature ranging between max 67.6°F (19.8°C) and min 49.6°F (9.8°C). May's onset brings a rise in the average high-temperature, moving from a moderate 56.5°F (13.6°C) in April to a comfortable 67.6°F (19.8°C). Weather in May »Weather in June
June, the first month of the summer in Colchester, is a warm month, with temperature in the range of an average low of 57.4°F (14.1°C) and an average high of 75.7°F (24.3°C). The onset of June brings a minor temperature shift, with the average high-temperature moving from a comfortable 67.6°F (19.8°C) in May to a moderately hot 75.7°F (24.3°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Colchester, Connecticut, with an average temperature ranging between min 64°F (17.8°C) and max 82.2°F (27.9°C). July is the warmest month, exhibiting average temperatures of 82.2°F (27.9°C) at the peak and 64°F (17.8°C) at the base. July's heat index is appraised at a tropical 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Colchester, is also a moderately hot month, with temperature in the range of an average high of 80.2°F (26.8°C) and an average low of 63°F (17.2°C). On the advent of August, Colchester's average high-temperature exhibits a minor adjustment to a still warm 80.2°F (26.8°C) from July's 82.2°F (27.9°C). Weather in August »Weather in September
September, the first month of the autumn in Colchester, is still a warm month, with an average temperature ranging between min 56.7°F (13.7°C) and max 73.4°F (23°C). The arrival of September suggests a slight decrease in the average high-temperature, moving from 80.2°F (26.8°C) in August to a still moderately hot 73.4°F (23°C). Weather in September »Weather in October
October, like September, in Colchester, Connecticut, is another refreshing autumn month, with an average temperature varying between 61.5°F (16.4°C) and 47.7°F (8.7°C). October's onset brings a slight change in high-temperatures, falling from a warm 73.4°F (23°C) in September to an enjoyable 61.5°F (16.4°C). Weather in October »Weather in November
November, the last month of the autumn in Colchester, is also a frosty month, with an average temperature ranging between min 36.9°F (2.7°C) and max 49.6°F (9.8°C). The decrease of average high-temperatures is mild in November, with a decline from an enjoyable 61.5°F (16.4°C) in October to a frosty 49.6°F (9.8°C). Weather in November »Weather in December
December, the first month of the winter in Colchester, is also a wintry month, with temperature in the range of an average high of 40.3°F (4.6°C) and an average low of 29.7°F (-1.3°C). Onset of December witnesses a reduction in the average high-temperature, falling from a frosty 49.6°F (9.8°C) in November to a wintry 40.3°F (4.6°C). Weather in December »Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Colchester, the lowest temperatures are generally noted in January, averaging a high of 34.3°F (1.3°C) and a low of 22.8°F (-5.1°C).
In Colchester, during the entire year, the rain falls for 99.9 days and collects up to 9.41" (239mm) of precipitation.
Months with snowfall are January through May, November and December.
In Colchester, during the entire year, snow falls for 22.3 days and aggregates up to 3.82" (97mm) of snow.
The most humid month is February, with an average relative humidity of 79%.
The months with the least sunshine are February and December, with an average of 4.6h of sunshine.
The month with the most snowfall is March, when snow falls for 5.3 days and typically aggregates up to 1.26" (32mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
The least humid month is April, with an average relative humidity of 71%.
In Colchester, snow does not fall in June through October.
With an average of 15h and 6min of daylight, June has the longest days of the year.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
Colchester reaches its average highest temperatures in July, measuring 82.2°F (27.9°C) at the peak and 64°F (17.8°C) at the lowest.
With an average of 10.3h of sunshine, August has the most sunshine of the year.
September is the month with the least rainfall. Rain falls for 7.5 days and accumulates 0.35" (9mm) of precipitation.
The month with the most rainfall is December, when the rain falls for 6.8 days and typically aggregates up to 1.02" (26mm) of precipitation.
The month with the shortest days is December, with an average of 9h and 12min of daylight.
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
Colchester, CT
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (34.3°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure
Colchester, 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
Colchester, CT
- Average wind speed in January:
8.6mph - Average wind speed in February:
8.4mph - Average wind speed in March:
8.6mph - Average wind speed in April:
8.1mph - Average wind speed in May:
6.8mph - Average wind speed in June:
6.1mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.6mph - Average wind speed in September:
6.2mph - Average wind speed in October:
7.4mph - Average wind speed in November:
7.8mph - Average wind speed in December:
8.3mph
The windiest months (with the highest average wind speed) are January and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity
Colchester, CT
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).
Average rainfall
Colchester, CT
- Average rainfall in January:
0.59" - Average rainfall in February:
0.55" - Average rainfall in March:
0.67" - Average rainfall in April:
0.91" - Average rainfall in May:
0.75" - Average rainfall in June:
0.87"
- Average rainfall in July:
0.91" - Average rainfall in August:
0.87" - Average rainfall in September:
0.35" - Average rainfall in October:
0.98" - Average rainfall in November:
0.94" - Average rainfall in December:
1.02"
The wettest month (with the highest rainfall) is December (1.02").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days
Colchester, CT
- Average rainfall days in January:
5.1 days - Average rainfall days in February:
5.8 days - Average rainfall days in March:
8.4 days - Average rainfall days in April:
9.1 days - Average rainfall days in May:
10 days - Average rainfall days in June:
9.6 days
- Average rainfall days in July:
11.8 days - Average rainfall days in August:
11.2 days - Average rainfall days in September:
7.5 days - Average rainfall days in October:
8.4 days - Average rainfall days in November:
6.2 days - Average rainfall days in December:
6.8 days
The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is January (5.1 days).
Average snowfall
Colchester, CT
- Average snowfall in January:
0.59" - Average snowfall in February:
0.63" - Average snowfall in March:
1.26" - Average snowfall in April:
0.08" - Average snowfall in May:
0.2" - Average snowfall in June:
0"
The month with the highest snowfall is March (1.26").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Colchester, CT
- Average snowfall days in January:
4.9 days - Average snowfall days in February:
6.4 days - Average snowfall days in March:
5.3 days - Average snowfall days in April:
0.8 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:
0.7 days - Average snowfall days in December:
4.1 days
The month with the highest number of snowfall days is February (6.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
Colchester, 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 0min - Average sunshine in February:
4h and 36min - Average sunshine in March:
5h and 54min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 6min - Average sunshine in June:
9h and 6min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 24min - Average sunshine in October:
5h and 48min - Average sunshine in November:
5h and 24min - Average sunshine in December:
4h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days
Colchester, CT
- Average sunshine days in January:
21.8 days - Average sunshine days in February:
18.3 days - Average sunshine days in March:
18.2 days - Average sunshine days in April:
18.6 days - Average sunshine days in May:
18.8 days - Average sunshine days in June:
18.3 days
- Average sunshine days in July:
17.1 days - Average sunshine days in August:
17.8 days - Average sunshine days in September:
20.5 days - Average sunshine days in October:
20.8 days - Average sunshine days in November:
21.3 days - Average sunshine days in December:
20.2 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (17.1 days).
Average UV index
Colchester, CT
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Colchester, CT
The months with the most cloud cover are February and March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility
Colchester, CT
The months with the highest visibility are January, March, April, September, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July and August (5mi).
