August weather forecast
Granby, CT

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Weather in August

August, the last month of the summer in Granby, is another warm month, with an average temperature ranging between min 59.7°F (15.4°C) and max 80.2°F (26.8°C).

Temperature

Granby, Connecticut, starts August with an average high-temperature of a still warm 80.2°F (26.8°C), hinting at a minimal fluctuation from July. Throughout the month of August, Granby expects an average low of 59.7°F (15.4°C).

Humidity

In Granby, Connecticut, the average relative humidity in August is 76%.

Rainfall

In Granby, during August, the rain falls for 12.7 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Granby, during the entire year, the rain falls for 130.2 days and collects up to 19.25" (489mm) of precipitation.

Snowfall

June through October are months without snowfall in Granby.

Daylight

The average length of the day in August is 13h and 49min.
On the first day of August, sunrise is at 5:45 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:25 pm EDT.

Sunshine

The months with the most sunshine in Granby are July and August, with an average of 10.4h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.
Note: In August, the maximum UV index of 6 suggests this advice:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Boost your sun resistance with garments that are densely woven yet spacious.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August in Granby?

The high-temperature in Granby during August is 80.2°F (26.8°C) and the low-temperature is 59.7°F (15.4°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is appraised at 89.6°F (32°C).

What is the average humidity in August in Granby?

In Granby, the average relative humidity in August is 76%.

How much does it rain in Granby in August?

In August, in Granby, Connecticut, the rain falls for 12.7 days. Throughout August, 1.73" (44mm) of precipitation is accumulated.

When it does not snow in Granby?

In Granby, Connecticut, snow does not fall in June through October.

How many hours of daylight does Granby have in August?

In Granby, the average day length in August is 13h and 49min.

When is the sunrise / sunset in August in Granby?

In August, on the first day of the month, sunrise is at 5:45 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:25 pm EDT.

What is the month with the most sunshine in Granby?

The months with the most sunshine in Granby, Connecticut, are July and August, with an average of 10.4h of sunshine.

How many hours of sunshine does Granby have in August?

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

What are the months with the highest UV index in Granby?

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

How high is the UV index in August in Granby?

The average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe 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
Granby, CT

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

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in August: 59.7°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in August
Granby, CT

Average pressure in August - Granby, 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 (29.92"Hg).

Average wind speed in August
Granby, CT

Average wind speed in August - Granby, CT
  • Average wind speed in August: 5mph

The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in August
Granby, CT

Average humidity in August - Granby, CT
  • Average humidity in August: 76%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (71%).

Average rainfall in August
Granby, CT

Average rainfall in August - Granby, CT
  • Average rainfall in August: 1.73"

The wettest month (with the highest rainfall) is July (2.01").
The driest month (with the least rainfall) is January (1.14").

Average rainfall days in August
Granby, CT

Average rainfall days in August - Granby, CT
  • Average rainfall days in August: 12.7 days

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in August
Granby, CT

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

The month with the highest snowfall is February (2.48").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in August
Granby, CT

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

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

Average daylight in August /
Average sunshine in August
Granby, CT

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

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 2min

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
Granby, CT

Average sunshine days in August - Granby, CT
  • Average sunshine days in August: 15.1 days

The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is July (14.1 days).

Average UV index in August
Granby, CT

Average UV index in August - Granby, 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).

Average cloud cover in August
Granby, CT

Average cloud cover in August - Granby, CT
  • Average cloud cover in August: 33

The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in August
Granby, CT

Average visibility in August - Granby, CT
  • Average visibility in August: 5mi

The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).

Granby, Connecticut, USA

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