August weather forecast
Norwich, CT

Share

Weather in August

In Norwich, August presents a continuation of July's typical summer weather, but begins its gradual transition towards fall. The temperatures exhibit a slight decline compared to July, however, still remain quite high. The rainfall also sees a decrease from the previous month. Nature begins to don an autumnal hue towards the end of the month, hinting at the upcoming fall season. Despite the high humidity, cool breezes occasionally blow, offering respite from the heat.

Temperature

As Norwich steps into August, the average high-temperature is measured at a still warm 80.2°F (26.8°C), displaying minor differences from July's 81.7°F (27.6°C). Norwich's average low-temperature is measured at a comfortable 63.1°F (17.3°C) during August.

Humidity

In Norwich, the average relative humidity in August is 77%.

Rainfall

In Norwich, during August, the rain falls for 14.8 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, there are 156.4 rainfall days, and 33.54" (852mm) of precipitation is accumulated.

Snowfall

In Norwich, snow does not fall in June through October.

Daylight

The average length of the day in August is 13h and 47min.
On the first day of August, sunrise is at 5:43 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 7:22 pm EDT.

Sunshine

The months with the most sunshine are July and August, with an average of 10.2h of sunshine.

UV index

The months with the highest UV index in Norwich are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The daily high UV index of 6 during August translates into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. 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. 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.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in August?

During August, Norwich experiences an average high-temperature of 80.2°F (26.8°C) and a low-temperature of 63.1°F (17.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in July is calculated to be 87.8°F (31°C).

What is the average humidity in August?

In Norwich, the average relative humidity in August is 77%.

How many days does it rain in August?

In Norwich, Connecticut, in August, it is raining for 14.8 days, with typically 2.6" (66mm) of accumulated precipitation.

When it does not snow?

In Norwich, snow does not fall in June through October.

How many hours of daylight does Norwich have in August?

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

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 5:43 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 7:22 pm EDT.

What is the month with the most sunshine?

July and August, with an average of 10.2h of sunshine, are months with the most sunshine.

How many hours of sunshine does Norwich have in August?

In August, the average sunshine duration is 10.2h.

When is the highest UV index?

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

How high is the UV index in August?

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.
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
Norwich, CT

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

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (34.9°F).

  • Average low temperature in August: 63.1°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in August
Norwich, CT

Average pressure in August - Norwich, 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).

Average wind speed in August
Norwich, CT

Average wind speed in August - Norwich, CT
  • Average wind speed in August: 6.1mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

Average humidity in August
Norwich, CT

Average humidity in August - Norwich, CT
  • Average humidity in August: 77%

The months with the highest relative humidity are February, June, July and September (78%).
The month with the lowest relative humidity is April (72%).

Average rainfall in August
Norwich, CT

Average rainfall in August - Norwich, CT
  • Average rainfall in August: 2.6"

The wettest month (with the highest rainfall) is December (3.7").
The driest month (with the least rainfall) is September (1.61").

Average rainfall days in August
Norwich, CT

Average rainfall days in August - Norwich, CT
  • Average rainfall days in August: 14.8 days

The months with the highest number of rainy days are May and July (16.3 days).
The month with the least rainy days is January (9 days).

Average snowfall in August
Norwich, CT

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

The month with the highest snowfall is March (3.43").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in August
Norwich, CT

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

The month with the highest number of snowfall days is February (7.3 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
Norwich, CT

Average daylight in August / Average sunshine in August - Norwich, 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 1min

The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).

Average sunshine days in August
Norwich, CT

Average sunshine days in August - Norwich, CT
  • Average sunshine days in August: 12.3 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (11.6 days).

Average UV index in August
Norwich, CT

Average UV index in August - Norwich, 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
Norwich, CT

Average cloud cover in August - Norwich, CT
  • Average cloud cover in August: 34

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in August
Norwich, CT

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

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

Norwich, Connecticut, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location