August weather forecast
Derby, CT

Weather in August

The last month of the summer, August, is also a moderately hot month in Derby, Connecticut, with an average temperature varying between 65.5°F (18.6°C) and 80.2°F (26.8°C).

Temperature

In August, the average high-temperature is essentially the same as in July - a still moderately hot 80.2°F (26.8°C). In Derby, in August, the average low-temperature is 65.5°F (18.6°C).

Humidity

In Derby, Connecticut, the average relative humidity in August is 74%.

Rainfall

In Derby, Connecticut, during August, the rain falls for 16.8 days and regularly aggregates up to 3.03" (77mm) of precipitation. In Derby, during the entire year, the rain falls for 169.1 days and collects up to 36.26" (921mm) of precipitation.

Snowfall

May through October are months without snowfall in Derby.

Daylight

The average length of the day in August is 13h and 47min.
On the first day of the month, sunrise is at 5:47 am and sunset at 8:09 pm. On the last day of August, sunrise is at 6:17 am and sunset at 7:27 pm EDT.

Sunshine

The months with the most sunshine in Derby are July and August, with an average of 10.5h of sunshine.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 6 in August transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in August in Derby?

In August, the average high-temperature is 80.2°F (26.8°C), and the average low-temperature is 65.5°F (18.6°C). in July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 87.8°F (31°C).

What is the average humidity in August in Derby?

In August, the average relative humidity in Derby, Connecticut, is 74%.

How much does it rain in Derby in August?

In Derby, in August, it is raining for 16.8 days, with typically 3.03" (77mm) of accumulated precipitation.

When it does not snow in Derby?

In Derby, Connecticut, snow does not fall in May through October.

How many hours of daylight does Derby have in August?

In August, the average day length is 13h and 47min.

When are sunrise and sunset in August in Derby?

On the first day of August in Derby, Connecticut, sunrise is at 5:47 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:27 pm EDT.

What is the month with the most sunshine in Derby?

The months with the most sunshine in Derby, Connecticut, are July and August, with an average of 10.5h of sunshine.

How long on average sun shines in August in Derby?

In Derby, Connecticut, the average sunshine duration in August is 10.5h.

What is the month with the highest UV index in Derby?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Derby.

What is the UV index reading in August in Derby?

In Derby, Connecticut, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Derby, CT

Average temperature in August - Derby, CT
  • Average high temperature in August: 80.2°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (34.7°F).

  • Average low temperature in August: 65.5°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).

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Average pressure in August
Derby, CT

Average pressure in August - Derby, 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).

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Average wind speed in August
Derby, CT

Average wind speed in August - Derby, CT
  • Average wind speed in August: 6.2mph

The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

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Average humidity in August
Derby, CT

Average humidity in August - Derby, CT
  • Average humidity in August: 74%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in August
Derby, CT

Average rainfall in August - Derby, CT
  • Average rainfall in August: 3.03"

The wettest month (with the highest rainfall) is December (4.06").
The driest month (with the least rainfall) is September (2.24").

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Average rainfall days in August
Derby, CT

Average rainfall days in August - Derby, CT
  • Average rainfall days in August: 16.8 days

The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is January (9.4 days).

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Average snowfall in August
Derby, CT

Average snowfall in August - Derby, CT
  • Average snowfall in August: 0"

The month with the highest snowfall is February (3.23").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Derby, CT

Average snowfall days in August - Derby, CT
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (7.8 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
Derby, CT

Average daylight in August / Average sunshine in August - Derby, CT
  • Average daylight in August: 13h and 47min

The month with the longest days is June (Average daylight: 15h and 7min).
The month with the shortest days is December (Average daylight: 9h and 15min).

  • Average sunshine in August: 10h and 30min

The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in August
Derby, CT

Average sunshine days in August - Derby, CT
  • Average sunshine days in August: 11.4 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in August
Derby, CT

Average UV index in August - Derby, 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
Derby, CT

Average cloud cover in August - Derby, CT
  • Average cloud cover in August: 30

The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in August
Derby, CT

Average visibility in August - Derby, 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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