Monthly weather forecast and climate
Sterling, CT

Weather in January

January, like December, in Sterling, Connecticut, is another cold winter month, with average temperature varying between 34°F (1.1°C) and 22.3°F (-5.4°C). The coldest month is January, with an average high-temperature of 34°F (1.1°C) and an average low-temperature of 22.3°F (-5.4°C). Weather in January »

Weather in February

The last month of the winter, February, is another cold month in Sterling, Connecticut, with average temperature varying between 36.7°F (2.6°C) and 23.4°F (-4.8°C). In February, the average high-temperature is essentially the same as in January - a still cold 36.7°F (2.6°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Sterling, Connecticut, with average temperature ranging between max 43.7°F (6.5°C) and min 30.6°F (-0.8°C). In Sterling, the average high-temperature slightly increases, from a wintry 36.7°F (2.6°C) in February, to a chilly 43.7°F (6.5°C). Weather in March »

Weather in April

April in Sterling, Connecticut, is a moderate spring month, with average temperature ranging between min 40.1°F (4.5°C) and max 55.6°F (13.1°C). In Sterling, the average high-temperature rises, from a chilly 43.7°F (6.5°C) in March, to a mild 55.6°F (13.1°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Sterling, Connecticut, with average temperature ranging between min 49.5°F (9.7°C) and max 66.2°F (19°C). In May, the average high-temperature rises, from a moderate 55.6°F (13.1°C) in April, to an enjoyable 66.2°F (19°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Sterling, Connecticut, with temperature in the range of an average low of 56.5°F (13.6°C) and an average high of 73.9°F (23.3°C). In Sterling, the average high-temperature in June marginally rises, from a comfortable 66.2°F (19°C) in May, to a moderately hot 73.9°F (23.3°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Sterling, Connecticut, with average temperature ranging between min 63.3°F (17.4°C) and max 80.8°F (27.1°C). July is the warmest month, with an average high-temperature of 80.8°F (27.1°C) and an average low-temperature of 63.3°F (17.4°C). In July, the average heat index is evaluated at 85.8°F (29.9°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Sterling, Connecticut, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 79.7°F (26.5°C). In August, the average high-temperature is almost the same as in July - a still warm 79.7°F (26.5°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Sterling, Connecticut, with average temperature varying between 55.9°F (13.3°C) and 72.5°F (22.5°C). In September, the average high-temperature slightly decreases, from a moderately hot 79.7°F (26.5°C) in August, to a pleasant 72.5°F (22.5°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Sterling, Connecticut, with temperature in the range of an average low of 47.1°F (8.4°C) and an average high of 61°F (16.1°C). In October, the average high-temperature drops, from a pleasant 72.5°F (22.5°C) in September, to a comfortable 61°F (16.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Sterling, Connecticut, with average temperature ranging between max 49.1°F (9.5°C) and min 36.5°F (2.5°C). In November, the average high-temperature decreases, from a comfortable 61°F (16.1°C) in October, to a chilly 49.1°F (9.5°C). Weather in November »

Weather in December

December, the first month of the winter, in Sterling, is still a cold month, with average temperature varying between 29.3°F (-1.5°C) and 40.1°F (4.5°C). In Sterling, the average high-temperature drops, from a frosty 49.1°F (9.5°C) in November, to a wintry 40.1°F (4.5°C). Weather in December »
[Resources]

FAQ

What is the coldest month in Sterling?

January is the coldest month in Sterling, with an average high-temperature of 34°F (1.1°C) and an average low-temperature of 22.3°F (-5.4°C).

How many days does it rain in Sterling?

Throughout the year, there are 163.2 rainfall days, and 33.7" (856mm) of precipitation is accumulated.

When does it snow in Sterling?

Months with snowfall in Sterling are January through May, November and December.

How many days does it snow in Sterling?

In Sterling, during the entire year, snow falls for 29.7 days, and aggregates up to 12.99" (330mm) of snow.

What are the months with the lowest UV index in Sterling?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Sterling.

What is the most humid month in Sterling?

February, June, July and September, with an average relative humidity of 79%, are most humid months.

What is the month with the least sunshine in Sterling?

The month with the least sunshine in Sterling, Connecticut, is February, with an average of 4.8h of sunshine.

What is the snowiest month in Sterling?

The month with the most snowfall in Sterling is March when snow falls for 6.9 days and typically aggregates up to 3.62" (92mm) of snow.

What is the least humid month in Sterling?

The least humid month in Sterling, Connecticut, is April, with an average relative humidity of 72%.

When it does not snow in Sterling?

June through October are months without snowfall in Sterling.

When are the longest days in Sterling?

June has the longest days of the year in Sterling, Connecticut, with an average of 15.2h of daylight.

When is the highest UV index in Sterling?

Months with the highest UV index in Sterling are June through August, with an average maximum UV index of 6.

What is the warmest month in Sterling?

The warmest month in Sterling, Connecticut, is July, with an average high-temperature of 80.8°F (27.1°C) and an average low-temperature of 63.3°F (17.4°C).

What are the months with the most sunshine in Sterling?

July and August, with an average of 10.3h of sunshine, are months with the most sunshine in Sterling, Connecticut.

What is the driest month in Sterling?

September is the month with the least rainfall in Sterling, Connecticut. Rain falls for 13.4 days and accumulates 1.73" (44mm) of precipitation.

What is the rainiest month in Sterling?

The month with the most rainfall is December when the rain falls for 11.2 days and typically aggregates up to 3.39" (86mm) of precipitation.

What is the month with the shortest days in Sterling?

The month with the shortest days is December, with an average of 9.2h of daylight.

Average temperature
Sterling, CT

Average temperature - Sterling, CT

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (34°F).

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

[Resources]

Average pressure
Sterling, CT

Average pressure - Sterling, CT

The month with the highest atmospheric pressure is November (30.08").
The month with the lowest atmospheric pressure is June (29.93").

[Resources]

Average wind speed
Sterling, CT

Average wind speed - Sterling, CT

The windiest months (with the highest average wind speed) are January and March (9.4mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

[Resources]

Average humidity
Sterling, CT

Average humidity - Sterling, CT

Months with the highest relative humidity are February, June, July and September (79%).
The month with the lowest relative humidity is April (72%).

[Resources]

Average rainfall
Sterling, CT

Average rainfall - Sterling, CT

The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.73").

[Resources]

Average rainfall days
Sterling, CT

Average rainfall days - Sterling, CT

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (8.3 days).

[Resources]

Average snowfall
Sterling, CT

Average snowfall - Sterling, CT

The month with the highest snowfall is March (3.62").
Months with the least snowfall are June, July, August, September and October (0").

[Resources]

Average snowfall days
Sterling, CT

Average snowfall days - Sterling, CT

The month with the highest number of snowfall days is February (7.7 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

[Resources]

Average daylight / Average sunshine
Sterling, CT

Average daylight / Average sunshine - Sterling, CT

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

Months with the most sunshine are July and August (Average sunshine: 10.3h).
The month with the least sunshine is February (Average sunshine: 4.8h).

[Resources]

Average sunshine days
Sterling, CT

Average sunshine days - Sterling, CT

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.3 days).

[Resources]

Average UV index
Sterling, CT

Average UV index - Sterling, CT

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

[Resources]

Average visibility
Sterling, CT

Average visibility - Sterling, CT

Months with the highest visibility are January, February, March, April, September, October, November and December (6mi).
Months with the lowest visibility are May, June, July and August (5mi).

[Resources]