Climate and monthly weather forecastSterling, CT
Climate and monthly weather forecast
Weather in January
January, like December, in Sterling, Connecticut, is another cold winter month, with temperature in the range of an average high of 34°F (1.1°C) and an average low of 22.3°F (-5.4°C). January tends to be the coldest month, with temperatures averaging a daily high of 34°F (1.1°C) and a low of 22.3°F (-5.4°C). Weather in January »Weather in February
The last month of the winter, February, is also an icy month in Sterling, Connecticut, with temperature in the range of an average high of 36.7°F (2.6°C) and an average low of 23.4°F (-4.8°C). In Sterling, February's average high-temperature stands at a still wintry 36.7°F (2.6°C), closely related to the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Sterling, Connecticut, with temperature in the range of an average high of 43.7°F (6.5°C) and an average low of 30.6°F (-0.8°C). A slight uplift in the average high-temperature marks March, adjusting from February's cold 36.7°F (2.6°C) to a frosty 43.7°F (6.5°C). Weather in March »Weather in April
April in Sterling, Connecticut, is a moderate spring month, with an average temperature varying between 40.1°F (4.5°C) and 55.6°F (13.1°C). As Sterling, Connecticut, welcomes April, the average high-temperature sees a rise, transitioning from a frosty 43.7°F (6.5°C) in March to a refreshing 55.6°F (13.1°C). Weather in April »Weather in May
The last month of the spring, May, is a comfortable month in Sterling, Connecticut, with an average temperature fluctuating between 49.5°F (9.7°C) and 66.2°F (19°C). The shift from April to May sees an increase in the average high-temperature, transitioning from a refreshing 55.6°F (13.1°C) 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 an average temperature ranging between min 56.5°F (13.6°C) and max 73.9°F (23.3°C). Sterling's June weather indicates a minor increase in high-temperatures, edging from May's refreshing 66.2°F (19°C) to a warm 73.9°F (23.3°C). Weather in June »Weather in July
July, like June, in Sterling, Connecticut, is another warm summer month, with an average temperature ranging between min 63.3°F (17.4°C) and max 80.8°F (27.1°C). In Sterling, the peak temperatures are generally noted in July, averaging a high of 80.8°F (27.1°C) and a low of 63.3°F (17.4°C). In July, the heat index is computed to be a tropical 86°F (30°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Sterling, Connecticut, with an average temperature ranging between min 62.2°F (16.8°C) and max 79.7°F (26.5°C). Sterling, Connecticut, records an average high-temperature of a still moderately hot 79.7°F (26.5°C) in August, maintaining a close correlation with July's 80.8°F (27.1°C). Weather in August »Weather in September
September, the first month of the autumn in Sterling, is still a pleasant month, with an average temperature ranging between max 72.5°F (22.5°C) and min 55.9°F (13.3°C). With the arrival of September, Sterling experiences a modest decline in average high-temperatures, transitioning from a warm 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 refreshing autumn month in Sterling, Connecticut, with an average temperature fluctuating between 61°F (16.1°C) and 47.1°F (8.4°C). Start of October brings a shift in the average high-temperature, falling from September's agreeable 72.5°F (22.5°C) 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 an average temperature varying between 36.5°F (2.5°C) and 49.1°F (9.5°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
The first month of the winter, December, is also an icy month in Sterling, Connecticut, with temperature in the range of an average low of 29.3°F (-1.5°C) and an average high of 40.1°F (4.5°C). The arrival of December signals a shift in temperature, down from a chilly 49.1°F (9.5°C) in November to an icy 40.1°F (4.5°C). Weather in December »Updated: Feb 10, 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 Sterling, January is known for its average lowest temperatures, reaching a high of 34°F (1.1°C) and a low of 22.3°F (-5.4°C).
Throughout the year, there are 163.2 rainfall days, and 33.7" (856mm) of precipitation is accumulated.
Months with snowfall in Sterling are January through May, November and December.
In Sterling, during the entire year, snow falls for 29.7 days and aggregates up to 12.99" (330mm) of snow.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The months with the highest humidity are February, June, July and September, with an average relative humidity of 79%.
The month with the least sunshine in Sterling, Connecticut, is February, with an average of 4.8h of sunshine.
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.
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 in Sterling is April, with an average relative humidity of 72%.
June through October are months without snowfall in Sterling.
The month with the longest days is June, with an average of 15h and 12min of daylight.
The months with the highest UV index in Sterling, Connecticut, are June through August, with an average maximum UV index of 6.
July, noted for its average high-temperature of 80.8°F (27.1°C) and an average low-temperature of 63.3°F (17.4°C), is considered the warmest month.
The months with the most sunshine are July and August, with an average of 10.3h of sunshine.
The month with the least rainfall is September, when the rain falls for 13.4 days and typically collects 1.73" (44mm) of precipitation.
December is the month with the most rainfall. Rain falls for 11.2 days and accumulates 3.39" (86mm) of precipitation.
With an average of 9h and 12min of daylight, December has the shortest days of the year.
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).
Average pressure
Sterling, CT
- Average pressure in January:
30.02"Hg - Average pressure in February:
30"Hg - Average pressure in March:
30.03"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:
30.04"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
Sterling, CT
- Average wind speed in January:
9.4mph - Average wind speed in February:
9.3mph - Average wind speed in March:
9.4mph - Average wind speed in April:
8.8mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
6.1mph - Average wind speed in September:
6.8mph - Average wind speed in October:
8mph - Average wind speed in November:
8.5mph - Average wind speed in December:
9mph
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).
Average humidity
Sterling, CT
The months with the highest relative humidity are February, June, July and September (79%).
The month with the lowest relative humidity is April (72%).
Average rainfall
Sterling, CT
- Average rainfall in January:
2.56" - Average rainfall in February:
2.36" - Average rainfall in March:
2.72" - Average rainfall in April:
3.23" - Average rainfall in May:
2.76" - Average rainfall in June:
3.03"
- Average rainfall in July:
3.19" - Average rainfall in August:
2.76" - Average rainfall in September:
1.73" - Average rainfall in October:
3.11" - Average rainfall in November:
2.87" - Average rainfall in December:
3.39"
The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days
Sterling, CT
- Average rainfall days in January:
8.3 days - Average rainfall days in February:
9.1 days - Average rainfall days in March:
12 days - Average rainfall days in April:
15.6 days - Average rainfall days in May:
16.6 days - Average rainfall days in June:
17.2 days
- Average rainfall days in July:
17.7 days - Average rainfall days in August:
16.8 days - Average rainfall days in September:
13.4 days - Average rainfall days in October:
14.3 days - Average rainfall days in November:
11 days - Average rainfall days in December:
11.2 days
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).
Average snowfall
Sterling, CT
- Average snowfall in January:
2.48" - Average snowfall in February:
3.43" - Average snowfall in March:
3.62" - Average snowfall in April:
0.43" - Average snowfall in May:
0.28" - Average snowfall in June:
0"
The month with the highest snowfall is March (3.62").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Sterling, CT
- Average snowfall days in January:
7.6 days - Average snowfall days in February:
7.7 days - Average snowfall days in March:
6.9 days - Average snowfall days in April:
1.3 days - Average snowfall days in May:
0.2 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:
1.1 days - Average snowfall days in December:
4.9 days
The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
Sterling, 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 36min - Average daylight in June:
15h and 12min
- 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 48min - Average daylight in December:
9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
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 0min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 18min - Average sunshine in June:
9h and 6min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 30min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 54min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days
Sterling, CT
- Average sunshine days in January:
16.9 days - Average sunshine days in February:
13.6 days - Average sunshine days in March:
13.7 days - Average sunshine days in April:
12.4 days - Average sunshine days in May:
12 days - Average sunshine days in June:
10.3 days
- Average sunshine days in July:
11 days - Average sunshine days in August:
11.4 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
14.5 days - Average sunshine days in November:
17.2 days - Average sunshine days in December:
15.6 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.3 days).
Average UV index
Sterling, 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
Sterling, CT
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
Sterling, CT
The months with the highest visibility are January, February, March, April, September, October, November and December (6mi).
The months with the lowest visibility are May, June, July and August (5mi).
