August weather forecastCollinsville, CT
August
Weather in August
August, the last month of the summer in Collinsville, is also a moderately hot month, with an average temperature varying between 61.5°F (16.4°C) and 80.2°F (26.8°C).Temperature
Collinsville records an average high-temperature of a still warm 80.2°F (26.8°C) as August arrives, nearly mirroring the previous month's climate. Collinsville records an average low-temperature of 61.5°F (16.4°C) throughout the month of August.Humidity
The average relative humidity in August is 75%.Rainfall
In Collinsville, during August, the rain falls for 14.9 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, there are 159.6 rainfall days, and 31.97" (812mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Collinsville.Daylight
In August, the average length of the day in Collinsville is 13h and 49min.On the first day of the month, sunrise is at 5:46 am and sunset at 8:09 pm. On the last day of August, sunrise is at 6:17 am and sunset at 7:26 pm EDT.
Sunshine
The months with the most sunshine are July and August, with an average of 10.3h of sunshine.UV index
The average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 in August interprets into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Collinsville, CT
- Average high temperature in August: 80.2°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in August: 61.5°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in August
Collinsville, CT
- Average pressure in August: 29.98"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 in August
Collinsville, CT
- Average wind speed in August: 5.2mph
The windiest months (with the highest average wind speed) are January and March (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in August
Collinsville, CT
- Average humidity in August: 75%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).
Average rainfall in August
Collinsville, CT
- Average rainfall in August: 2.52"
The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in August
Collinsville, CT
- Average rainfall days in August: 14.9 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in August
Collinsville, CT
- Average snowfall in August: 0"
The month with the highest snowfall is February (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Collinsville, CT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Collinsville, CT
- Average daylight in August: 13h and 48min
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 August: 10h and 18min
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 36min).
Average sunshine days in August
Collinsville, CT
- Average sunshine days in August: 14.2 days
The month with the most sunshine days is January (17.1 days).
The month with the least sunshine days is June (11.6 days).
Average UV index in August
Collinsville, CT
- Average UV index in August: 5
The months with the highest UV index are June and July (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
Collinsville, CT
- Average cloud cover in August: 34
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in August
Collinsville, CT
- Average visibility in August: 5mi
The months with the highest visibility are April, October, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August and September (5mi).





