August weather forecast
Old Mystic, CT

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Weather in August

The last month of the summer, August, is also a moderately hot month in Old Mystic, Connecticut, with an average temperature ranging between max 79.2°F (26.2°C) and min 64.4°F (18°C).

Temperature

During August, Old Mystic records an average high-temperature of a still moderately hot 79.2°F (26.2°C), marking a slight divergence from July's 80.2°F (26.8°C). Old Mystic's nights in August cool down to an average low-temperature of 64.4°F (18°C).

Humidity

In Old Mystic, Connecticut, the average relative humidity in August is 78%.

Rainfall

In August, in Old Mystic, the rain falls for 15.1 days. Throughout August, 2.56" (65mm) of precipitation is accumulated. Throughout the year, there are 162.1 rainfall days, and 33.66" (855mm) of precipitation is accumulated.

Snowfall

June through October are months without snowfall in Old Mystic.

Daylight

In Old Mystic, the average length of the day in August is 13h and 47min.
On the first day of August in Old Mystic, sunrise is at 5:43 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 7:22 pm EDT.

Sunshine

August has the most sunshine of the year in Old Mystic, with an average of 10.4h of sunshine.

UV index

The months with the highest UV index in Old Mystic are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 6 suggests these recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What is the temperature in August in Old Mystic?

In Old Mystic, in August, the average high-temperature is 79.2°F (26.2°C), and the average low-temperature is 64.4°F (18°C).

What is the average humidity in August in Old Mystic?

In August, the average relative humidity in Old Mystic, Connecticut, is 78%.

How much does it rain in Old Mystic in August?

In Old Mystic, in August, during 15.1 rainfall days, 2.56" (65mm) of precipitation is typically accumulated.

When it does not snow in Old Mystic?

June through October are months without snowfall in Old Mystic, Connecticut.

How many hours of daylight does Old Mystic have in August?

The average day length in August in Old Mystic, Connecticut, is 13h and 47min.

What time are sunrise and sunset in August in Old Mystic?

On the first day of August in Old Mystic, sunrise is at 5:43 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 7:22 pm EDT.

What month has the most sunshine in Old Mystic?

August has the most sunshine of the year, with an average of 10.4h of sunshine.

How many hours of sunshine does Old Mystic have in August?

In August, the average sunshine duration in Old Mystic is 10.4h.

What are the months with the highest UV index in Old Mystic?

The months with the highest UV index in Old Mystic, Connecticut, are June through August, with an average maximum UV index of 6.

What is the UV index intensity in August in Old Mystic?

The average daily maximum UV index in August in Old Mystic is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Old Mystic, CT

Average temperature in August - Old Mystic, CT
  • Average high temperature in August: 79.2°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in August: 64.4°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

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Average pressure in August
Old Mystic, CT

Average pressure in August - Old Mystic, 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).

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Average wind speed in August
Old Mystic, CT

Average wind speed in August - Old Mystic, CT
  • Average wind speed in August: 6.8mph

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).

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Average humidity in August
Old Mystic, CT

Average humidity in August - Old Mystic, CT
  • Average humidity in August: 78%

The months with the highest relative humidity are June and July (79%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in August
Old Mystic, CT

Average rainfall in August - Old Mystic, CT
  • Average rainfall in August: 2.56"

The wettest month (with the highest rainfall) is December (3.78").
The driest month (with the least rainfall) is September (1.61").

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Average rainfall days in August
Old Mystic, CT

Average rainfall days in August - Old Mystic, CT
  • Average rainfall days in August: 15.1 days

The month with the highest number of rainy days is June (16.6 days).
The month with the least rainy days is January (10 days).

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Average snowfall in August
Old Mystic, CT

Average snowfall in August - Old Mystic, CT
  • Average snowfall in August: 0"

The month with the highest snowfall is March (2.56").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in August
Old Mystic, CT

Average snowfall days in August - Old Mystic, CT
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Old Mystic, CT

Average daylight in August / Average sunshine in August - Old Mystic, CT
  • Average daylight in August: 13h and 5min

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 12min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

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Average sunshine days in August
Old Mystic, CT

Average sunshine days in August - Old Mystic, CT
  • Average sunshine days in August: 12.6 days

The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is July (11.5 days).

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Average UV index in August
Old Mystic, CT

Average UV index in August - Old Mystic, 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).

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Average cloud cover in August
Old Mystic, CT

Average cloud cover in August - Old Mystic, CT
  • Average cloud cover in August: 31

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in August
Old Mystic, CT

Average visibility in August - Old Mystic, 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).

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Old Mystic, Connecticut, USA

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