August weather forecastSimsbury, CT

August
Weather in August
Maintaining the warmth of July, August in Simsbury offers a high temperature of around 80.2°F (26.8°C). Relatively cooler nights offer a soothing contrast to the day's warmth, making this month an enjoyable experience. Although the heat is persistent, an occasional cloud cover provides brief respites. August is the culmination of the summer heat, marked by clear skies, sunny days, and the occasional need for shade. This month wraps up the summer season, bracing the city for a gradual, subtle transition into autumn.Temperature
August's advent denotes a minor fluctuation in the average high-temperature to a still warm 80.2°F (26.8°C) from July's 82.2°F (27.9°C). Throughout the month of August, Simsbury reports a steady low-temperature average of 61.5°F (16.4°C).Humidity
The average relative humidity in August is 75%.Rainfall
In August, in Simsbury, the rain falls for 14.9 days. Throughout August, 2.52" (64mm) of precipitation is accumulated. Throughout the year, in Simsbury, Connecticut, there are 159.6 rainfall days, and 31.97" (812mm) of precipitation is accumulated.Snowfall
In Simsbury, snow does not fall in June through September.Daylight
In Simsbury, the average length of the day in August is 13h and 49min.On the first day of the month, sunrise is at 5:45 am and sunset at 8:09 pm. On the last day of August, in Simsbury, sunrise is at 6:16 am and sunset at 7:26 pm EDT.
Sunshine
The months with the most sunshine in Simsbury are July and August, with an average of 10.3h of sunshine.UV index
The average daily maximum UV index in August in Simsbury is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In August, an average UV index of 5 transforms into the following instructions:
Exercise prevention - Precautions against solar damage are endorsed. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Simsbury, 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
Simsbury, 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
Simsbury, 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
Simsbury, 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
Simsbury, 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
Simsbury, 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
Simsbury, 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
Simsbury, 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
Simsbury, 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
Simsbury, 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
Simsbury, 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
Simsbury, 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
Simsbury, 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).





