Climate and monthly weather forecastWilton, CT
Climate and monthly weather forecast
Weather in January
January, like December, in Wilton, Connecticut, is another cold winter month, with an average temperature fluctuating between 25°F (-3.9°C) and 35.1°F (1.7°C). Wilton's coldest temperatures are experienced in January, with average high temperatures of 35.1°F (1.7°C) and lows of 25°F (-3.9°C). Weather in January »Weather in February
The last month of the winter, February, is another cold month in Wilton, Connecticut, with an average temperature ranging between min 26.1°F (-3.3°C) and max 37.6°F (3.1°C). Wilton experiences a minor change to a still wintry 37.6°F (3.1°C) in average high-temperature during February, closely reflecting January. Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Wilton, Connecticut, with an average temperature varying between 44.2°F (6.8°C) and 32.9°F (0.5°C). March witnesses a subtle temperature ascent, adjusting from a cold 37.6°F (3.1°C) in February to a chilly 44.2°F (6.8°C). Weather in March »Weather in April
April is a cool spring month in Wilton, Connecticut, with an average temperature varying between 55.2°F (12.9°C) and 42.3°F (5.7°C). The transition from March to April brings a temperature rise, with average high-temperatures increasing from a chilly 44.2°F (6.8°C) to a fresh 55.2°F (12.9°C). Weather in April »Weather in May
The last month of the spring, May, is a refreshing month in Wilton, Connecticut, with temperature in the range of an average low of 51.8°F (11°C) and an average high of 66°F (18.9°C). May's onset brings a temperature rise, moving from a fresh 55.2°F (12.9°C) in April to a refreshing 66°F (18.9°C). Weather in May »Weather in June
June, the first month of the summer in Wilton, is a warm month, with an average temperature varying between 60.4°F (15.8°C) and 74.5°F (23.6°C). Observing a minor shift, the average high-temperature during June adjusts from May's refreshing 66°F (18.9°C) to a warm 74.5°F (23.6°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Wilton, Connecticut, with an average temperature fluctuating between 81.7°F (27.6°C) and 67.6°F (19.8°C). July, with its high-temperature average of 81.7°F (27.6°C) and a low-temperature average of 67.6°F (19.8°C), is the warmest month. Throughout July, the heat index is computed to be a tropical 86°F (30°C). Weather in July »Weather in August
August, the last month of the summer in Wilton, is also a moderately hot month, with an average temperature ranging between min 66.7°F (19.3°C) and max 80.2°F (26.8°C). With the arrival of August, Wilton's average high-temperature registers at a still warm 80.2°F (26.8°C), indicating a subtle variation from the previous month. Weather in August »Weather in September
The first month of the autumn, September, is still a pleasant month in Wilton, Connecticut, with an average temperature fluctuating between 60.1°F (15.6°C) and 72.9°F (22.7°C). September sees a slight reduction in average high-temperature, with a shift from a warm 80.2°F (26.8°C) in August to a pleasant 72.9°F (22.7°C). Weather in September »Weather in October
October, like September, in Wilton, Connecticut, is another refreshing autumn month, with an average temperature fluctuating between 50.7°F (10.4°C) and 61.7°F (16.5°C). With the onset of October, Wilton's average high-temperature adjusts, receding from September's agreeable 72.9°F (22.7°C) to an enjoyable 61.7°F (16.5°C). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Wilton, Connecticut, with an average temperature varying between 50°F (10°C) and 39.7°F (4.3°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 cool 50°F (10°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Wilton, Connecticut, with an average temperature varying between 31.8°F (-0.1°C) and 40.8°F (4.9°C). As December commences, the average high-temperature shows a reduction, transitioning from a cool 50°F (10°C) in November to an icy 40.8°F (4.9°C). Weather in December »Updated: Jul 27, 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
With an average high-temperature of 35.1°F (1.7°C) and an average low-temperature of 25°F (-3.9°C), January is the coldest month.
January is the month with the least rainfall. Rain falls for 8.6 days and accumulates 2.44" (62mm) of precipitation.
In Wilton, during the entire year, the rain falls for 170.2 days and collects up to 38.62" (981mm) of precipitation.
January through April, November and December are months with snowfall in Wilton.
Throughout the year, there are 28.5 snowfall days, and 11.65" (296mm) of snow is accumulated.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
February, May, June, October and December, with an average relative humidity of 76%, are most humid months.
February is the month with the most snowfall. Snow falls for 8.3 days and accumulates 3.46" (88mm) of snow.
With an average of 4.7h of sunshine, February has the least sunshine of the year.
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 72%.
May through October are months without snowfall.
June has the longest days of the year, with an average of 15h and 6min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
Wilton's July weather, with an average high temperature of 81.7°F (27.6°C) and an average low temperature of 67.6°F (19.8°C), tends to be the warmest of the year.
July has the most sunshine of the year in Wilton, with an average of 10.5h of sunshine.
December is the month with the most rainfall. Rain falls for 12.3 days and accumulates 4.17" (106mm) of precipitation.
With an average of 9h and 18min of daylight, December has the shortest days of the year.
Average temperature
Wilton, 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 (35.1°F).
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure
Wilton, CT
- Average pressure in January:
30.05"Hg - Average pressure in February:
30.02"Hg - Average pressure in March:
30.05"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:
29.96"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.02"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
Wilton, CT
- Average wind speed in January:
9.5mph - Average wind speed in February:
9.3mph - Average wind speed in March:
9.3mph - Average wind speed in April:
8.7mph - Average wind speed in May:
7.1mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
6.1mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.4mph - Average wind speed in November:
8.9mph - Average wind speed in December:
9.2mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity
Wilton, CT
The months with the highest relative humidity are February, May, June, October and December (76%).
The month with the lowest relative humidity is April (72%).
Average rainfall
Wilton, CT
- Average rainfall in January:
2.44" - Average rainfall in February:
2.52" - Average rainfall in March:
2.87" - Average rainfall in April:
3.19" - Average rainfall in May:
3.23" - Average rainfall in June:
3.35"
- Average rainfall in July:
4.09" - Average rainfall in August:
3.5" - Average rainfall in September:
2.72" - Average rainfall in October:
3.54" - Average rainfall in November:
2.99" - Average rainfall in December:
4.17"
The wettest month (with the highest rainfall) is December (4.17").
The driest month (with the least rainfall) is January (2.44").
Average rainfall days
Wilton, CT
- Average rainfall days in January:
8.6 days - Average rainfall days in February:
10.4 days - Average rainfall days in March:
13.5 days - Average rainfall days in April:
16.2 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
18.1 days - Average rainfall days in August:
16.8 days - Average rainfall days in September:
14 days - Average rainfall days in October:
14.5 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
12.3 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (8.6 days).
Average snowfall
Wilton, CT
The month with the highest snowfall is February (3.46").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Wilton, CT
- Average snowfall days in January:
7.8 days - Average snowfall days in February:
8.3 days - Average snowfall days in March:
5.4 days - Average snowfall days in April:
0.7 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 days - Average snowfall days in December:
5.1 days
The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
Wilton, CT
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - 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 18min
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 18min).
- Average sunshine in January:
5h and 6min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 24min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 24min - Average sunshine in September:
8h and 54min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 42min - Average sunshine in December:
4h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Wilton, CT
- Average sunshine days in January:
17.3 days - Average sunshine days in February:
12.6 days - Average sunshine days in March:
13.2 days - Average sunshine days in April:
11.8 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
10.1 days
- Average sunshine days in July:
10.9 days - Average sunshine days in August:
11.3 days - Average sunshine days in September:
13.6 days - Average sunshine days in October:
14.4 days - Average sunshine days in November:
17.1 days - Average sunshine days in December:
14.5 days
The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is June (10.1 days).
Average UV index
Wilton, 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
Wilton, CT
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Wilton, 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).
