August weather forecast
Hopkinton, RI

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Weather in August

As August arrives, Hopkinton starts to witness a subtle transition from peak summer towards cooler fall temperatures. Despite being the second warmest month of the year, it marks a subtle decrease in average temperatures from July. Days begin to grow shorter, indicating the slow approach of autumn. Despite the transition, high humidity levels persist, potentially keeping discomfort in check in Hopkinton during summer afternoons. The noteworthy trait of August's weather is the annual peak temperature only slightly lower than July, at 77.5°F (25.3°C).

Temperature

With the advent of August, Hopkinton's high-temperatures adjust to a still warm 77.5°F (25.3°C), closely aligning with the preceding month. Nighttime temperature dips to a mean of 66.4°F (19.1°C) during August.

Humidity

The average relative humidity in August is 78%.

Rainfall

In Hopkinton, Rhode Island, during August, the rain falls for 16.1 days and regularly aggregates up to 2.56" (65mm) of precipitation. In Hopkinton, during the entire year, the rain falls for 154.5 days and collects up to 31.46" (799mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In Hopkinton, the average length of the day in August is 13h and 47min.
On the first day of the month, sunrise is at 5:42 am and sunset at 8:04 pm. On the last day of August, sunrise is at 6:13 am and sunset at 7:21 pm EDT.

Sunshine

With an average of 10.6h of sunshine, August has the most sunshine of the year.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In August, the average maximum UV index of 6 translates into the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Updated: Jul 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature?

The high-temperature, in August, in Hopkinton, is 77.5°F (25.3°C), while the low-temperature averages to 66.4°F (19.1°C).

What is the average humidity in August?

In August, the average relative humidity is 78%.

How many days does it rain in August in Hopkinton?

In August, the rain falls for 16.1 days. Throughout August, 2.56" (65mm) of precipitation is accumulated.

When it does not snow?

May through October are months without snowfall.

How many hours of daylight does Hopkinton have in August?

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

When is the sunrise / sunset in August in Hopkinton?

On the first day of August, sunrise is at 5:42 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 7:21 pm EDT.

What month has the most sunshine?

With an average of 10.6h of sunshine, August has the most sunshine of the year.

How many hours of sunshine does Hopkinton have in August?

In Hopkinton, the average sunshine duration in August is 10.6h.

What are the months with the highest UV index?

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 August, the average daily maximum UV index is 6. A UV Index estimate 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
Hopkinton, RI

Average temperature in August - Hopkinton, RI
  • Average high temperature in August: 77.5°F

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in August: 66.4°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (27°F).

Average pressure in August
Hopkinton, RI

Average pressure in August - Hopkinton, RI
  • 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
Hopkinton, RI

Average wind speed in August - Hopkinton, RI
  • Average wind speed in August: 8.3mph

The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest months (with the lowest average wind speed) are July and August (8.3mph).

Average humidity in August
Hopkinton, RI

Average humidity in August - Hopkinton, RI
  • Average humidity in August: 78%

The months with the highest relative humidity are June and July (81%).
The months with the lowest relative humidity are March and November (74%).

Average rainfall in August
Hopkinton, RI

Average rainfall in August - Hopkinton, RI
  • Average rainfall in August: 2.56"

The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.73").

Average rainfall days in August
Hopkinton, RI

Average rainfall days in August - Hopkinton, RI
  • Average rainfall days in August: 16.1 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.6 days).

Average snowfall in August
Hopkinton, RI

Average snowfall in August - Hopkinton, RI
  • Average snowfall in August: 0"

The month with the highest snowfall is March (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Hopkinton, RI

Average snowfall days in August - Hopkinton, RI
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Hopkinton, RI

Average daylight in August / Average sunshine in August - Hopkinton, RI
  • 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 4min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).

Average sunshine days in August
Hopkinton, RI

Average sunshine days in August - Hopkinton, RI
  • Average sunshine days in August: 12.3 days

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is July (11 days).

Average UV index in August
Hopkinton, RI

Average UV index in August - Hopkinton, RI
  • 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 and December (UV index 2).

Average cloud cover in August
Hopkinton, RI

Average cloud cover in August - Hopkinton, RI
  • Average cloud cover in August: 28

The months with the most cloud cover are March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in August
Hopkinton, RI

Average visibility in August - Hopkinton, RI
  • 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).

Hopkinton, Rhode Island, USA

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