July weather forecastSouth Lyme, CT
July
Weather in July
July is a warm summer month in South Lyme, Connecticut, with an average temperature varying between 79.5°F (26.4°C) and 66.4°F (19.1°C).Temperature
With its high average temperature of 79.5°F (26.4°C) and a low of 66.4°F (19.1°C), July is regarded as the warmest month.Humidity
June and July, with an average relative humidity of 79%, are the most humid months.Rainfall
In South Lyme, during July, the rain falls for 11.5 days and regularly aggregates up to 0.83" (21mm) of precipitation. Throughout the year, there are 110.7 rainfall days, and 8.58" (218mm) of precipitation is accumulated.Snowfall
In South Lyme, snow does not fall in April through October.Daylight
In South Lyme, the average length of the day in July is 14h and 49min.On the first day of the month, sunrise is at 5:20 am and sunset at 8:26 pm. On the last day of July, sunrise is at 5:44 am and sunset at 8:06 pm EDT.
Sunshine
July and August, with an average of 10.6h of sunshine, are months with the most sunshine.UV index
The months with the highest UV index in South Lyme are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 6 during July translates into the following directions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
South Lyme, CT
- Average high temperature in July: 79.5°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in July: 66.4°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in July
South Lyme, CT
- Average pressure in July: 29.95"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 in July
South Lyme, CT
- Average wind speed in July: 7.2mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in July
South Lyme, CT
- Average humidity in July: 79%
The months with the highest relative humidity are June and July (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in July
South Lyme, CT
- Average rainfall in July: 0.83"
The wettest month (with the highest rainfall) is December (0.94").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in July
South Lyme, CT
- Average rainfall days in July: 11.5 days
The month with the highest number of rainy days is July (11.5 days).
The months with the least rainy days are February and November (6.6 days).
Average snowfall in July
South Lyme, CT
- Average snowfall in July: 0"
The month with the highest snowfall is March (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in July
South Lyme, CT
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in July /
Average sunshine in July
South Lyme, CT
- Average daylight in July: 14h and 48min
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 July: 10h and 36min
The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in July
South Lyme, CT
- Average sunshine days in July: 15.8 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is July (15.8 days).
Average UV index in July
South Lyme, CT
- Average UV index in July: 6
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 in July
South Lyme, CT
- Average cloud cover in July: 31
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 28).
Average visibility in July
South Lyme, CT
- Average visibility in July: 6mi
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).
