August weather forecastOld Lyme, CT
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Old Lyme, Connecticut, with temperature in the range of an average low of 65.7°F (18.7°C) and an average high of 78.4°F (25.8°C).Temperature
Transitioning into August, Old Lyme experiences an average high-temperature of a still warm 78.4°F (25.8°C), marking a minor shift from the preceding month. In Old Lyme, the August nights cool down to an average low of 65.7°F (18.7°C).Humidity
In August, the average relative humidity in Old Lyme, Connecticut, is 77%.Rainfall
In Old Lyme, in August, it is raining for 11.1 days, with typically 0.71" (18mm) of accumulated precipitation. In Old Lyme, during the entire year, the rain falls for 110.7 days and collects up to 8.58" (218mm) of precipitation.Snowfall
In Old Lyme, snow does not fall in April through October.Daylight
The average length of the day in August is 13h and 47min.On the first day of August in Old Lyme, sunrise is at 5:45 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:23 pm EDT.
Sunshine
July and August, with an average of 10.6h of sunshine, are months with the most sunshine.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in Old Lyme. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.Note: The average daily UV index of 6 in August transforms into the following instructions:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Old Lyme, CT
- Average high temperature in August: 78.4°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 August: 65.7°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 August
Old Lyme, CT
- Average pressure in August: 29.98"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 August
Old Lyme, CT
- Average wind speed in August: 7.3mph
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 August
Old Lyme, CT
- Average humidity in August: 77%
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 August
Old Lyme, CT
- Average rainfall in August: 0.71"
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 August
Old Lyme, CT
- Average rainfall days in August: 11.1 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 August
Old Lyme, CT
- Average snowfall in August: 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 August
Old Lyme, CT
- Average snowfall days in August: 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 August /
Average sunshine in August
Old Lyme, CT
- Average daylight in August: 13h 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 August: 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 August
Old Lyme, CT
- Average sunshine days in August: 16.8 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 August
Old Lyme, CT
- Average UV index in August: 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 August
Old Lyme, CT
- Average cloud cover in August: 28
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 August
Old Lyme, CT
- Average visibility in August: 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).
