August weather forecastGlastonbury, CT
August
Weather in August
In August, as compared to July, Glastonbury experiences a minor drop in temperature and daylight hours. The city still resonates with summer fervor, aided by the persistent warmth. The humidity begins to decline gradually, making way for more tolerable heat levels. Despite it being summer, frequent showers persist. Overall, temperatures remain relatively high, making it a perfect month for outdoor gatherings.Temperature
The advent of August observes an average high-temperature of a still moderately hot 81°F (27.2°C), nearly identical to July's 83.1°F (28.4°C). Throughout August, Glastonbury's nights cool down to an average of 62.2°F (16.8°C).Heat index
August's average heat index is calculated to be a hot 86°F (30°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.In the scope of the heat index, its values resonate with shade and light wind conditions. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Humidity
In Glastonbury, the average relative humidity in August is 75%.Rainfall
In Glastonbury, in August, during 17 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. Throughout the year, there are 164.5 rainfall days, and 32.09" (815mm) of precipitation is accumulated.Snowfall
June through October are months without snowfall.Daylight
In August, the average length of the day is 13h and 48min.On the first day of the month, sunrise is at 5:45 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
In Glastonbury, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In August, the maximum UV index of 5 transforms into these recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. 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
Glastonbury, 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 (33.4°F).
- Average low temperature in August: 62.2°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in August
Glastonbury, 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
Glastonbury, CT
- Average wind speed in August: 5.3mph
The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in August
Glastonbury, CT
- Average humidity in August: 75%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).
Average rainfall in August
Glastonbury, CT
- Average rainfall in August: 2.72"
The wettest month (with the highest rainfall) is December (3.19").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in August
Glastonbury, CT
- Average rainfall days in August: 17 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in August
Glastonbury, CT
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in August
Glastonbury, CT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Glastonbury, 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
Glastonbury, CT
- Average sunshine days in August: 11.4 days
The month with the most sunshine days is January (17.6 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in August
Glastonbury, CT
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Glastonbury, 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
Glastonbury, 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).
