August weather forecastManchester, CT
August
Weather in August
In August, the weather in Manchester is marked with a subtle shift towards cooler temperatures. The sky gets marginally cloudier than the previous month, thereby reducing the intensity of the heat. The frequency and intensity of thunderstorms dwindle, leading to pleasant weather overall. Towards the end of the month, the city begins to experience early signs of the upcoming fall season. The average high temperature dips slightly to 81°F (27.2°C), providing relief from July’s peak summer heat.Temperature
In August, Manchester's weather conditions record an average high-temperature of a still warm 81°F (27.2°C), demonstrating little divergence from the preceding month. Nightly temperatures drop to an average low of 62.2°F (16.8°C) in August.Heat index
August's average heat index is calculated to be a hot 86°F (30°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.Note that heat index values are valued for light wind and location in the shade. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humidity
In August, the average relative humidity is 75%.Rainfall
In August, the rain falls for 16.7 days. Throughout August, 2.6" (66mm) of precipitation is accumulated. Throughout the year, there are 164.8 rainfall days, and 31.77" (807mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Manchester, the average length of the day in August is 13h and 49min.On the first day of the month, sunrise is at 5:44 am and sunset at 8:07 pm. On the last day of August, sunrise is at 6:15 am and sunset at 7:24 pm EDT.
Sunshine
The months with the most sunshine are July and August, with an average of 10.4h of sunshine.UV index
The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 5 during August leads to these advisories:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Manchester, CT
- Average high temperature in August: 81°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in August: 62.2°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in August
Manchester, 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
Manchester, CT
- Average wind speed in August: 5.2mph
The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in August
Manchester, 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
Manchester, CT
- Average rainfall in August: 2.6"
The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in August
Manchester, CT
- Average rainfall days in August: 16.7 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (10 days).
Average snowfall in August
Manchester, CT
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Manchester, CT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Manchester, 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 24min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in August
Manchester, CT
- Average sunshine days in August: 12 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in August
Manchester, 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
Manchester, CT
- Average cloud cover in August: 33
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in August
Manchester, CT
- Average visibility in August: 6mi
The months with the highest visibility are January, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are February, May and September (5mi).
