July weather forecast
Williamsburg, MA

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Weather in July

July, like June, in Williamsburg, Massachusetts, is another warm summer month, with an average temperature varying between 60.8°F (16°C) and 81.7°F (27.6°C).

Temperature

The warmest period tends to be July, when average temperatures fluctuate between a high of 81.7°F (27.6°C) and a low of 60.8°F (16°C).

Heat index

The heat index in July is computed to be a tropical 87.8°F (31°C). Continuing activity during long-lasting exposure might induce tiredness and result in heat cramps.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.

Humidity

In July, the average relative humidity in Williamsburg is 76%.

Rainfall

In July, the rain falls for 13.7 days. Throughout July, 1.46" (37mm) of precipitation is accumulated. Throughout the year, there are 134.1 rainfall days, and 14.84" (377mm) of precipitation is accumulated.

Snowfall

June through October are months without snowfall.

Daylight

In July, the average length of the day in Williamsburg is 14h and 55min.
On the first day of July in Williamsburg, sunrise is at 5:18 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:11 pm EDT.

Sunshine

The months with the most sunshine are July and August, with an average of 10.3h of sunshine.

UV index

June and July, with an average maximum UV index of 6, are months with the highest UV index in Williamsburg. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 6 in July translates into these instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

What is the hottest time of year in Williamsburg?

July, having an average high-temperature of 81.7°F (27.6°C) and an average low-temperature of 60.8°F (16°C), is the warmest month in Williamsburg.

What are the temperatures in Williamsburg in July?

The high-temperature, in July, in Williamsburg, records 81.7°F (27.6°C), while the low-temperature is 60.8°F (16°C). The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in July is computed to be 87.8°F (31°C).

What is the average humidity in July in Williamsburg?

In Williamsburg, the average relative humidity in July is 76%.

How much does it rain in Williamsburg in July?

In Williamsburg, Massachusetts, in July, during 13.7 rainfall days, 1.46" (37mm) of precipitation is typically accumulated.

When it does not snow in Williamsburg?

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

What is the average length of the day in July in Williamsburg?

In July, the average day length in Williamsburg, Massachusetts, is 14h and 55min.

When are sunrise and sunset in July in Williamsburg?

On the first day of July, sunrise is at 5:18 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:11 pm EDT.

What is the month with the most sunshine in Williamsburg?

The months with the most sunshine are July and August, with an average of 10.3h of sunshine.

How many hours of sunshine does Williamsburg have in July?

In Williamsburg, the average sunshine duration in July is 10.3h.

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

June and July, with an average maximum UV index of 6, are months with the highest UV index in Williamsburg, Massachusetts.

What is the UV index reading in July in Williamsburg?

In July, the average daily maximum UV index in Williamsburg is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to 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 July
Williamsburg, MA

Average temperature in July - Williamsburg, MA
  • Average high temperature in July: 81.7°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 (30.4°F).

  • Average low temperature in July: 60.8°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (18°F).

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Average pressure in July
Williamsburg, MA

Average pressure in July - Williamsburg, MA
  • Average pressure in July: 29.95"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).

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Average wind speed in July
Williamsburg, MA

Average wind speed in July - Williamsburg, MA
  • Average wind speed in July: 5.1mph

The windiest months (with the highest average wind speed) are January, February and March (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in July
Williamsburg, MA

Average humidity in July - Williamsburg, MA
  • Average humidity in July: 76%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in July
Williamsburg, MA

Average rainfall in July - Williamsburg, MA
  • Average rainfall in July: 1.46"

The wettest month (with the highest rainfall) is October (1.61").
The driest month (with the least rainfall) is February (0.91").

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Average rainfall days in July
Williamsburg, MA

Average rainfall days in July - Williamsburg, MA
  • Average rainfall days in July: 13.7 days

The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (8.5 days).

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Average snowfall in July
Williamsburg, MA

Average snowfall in July - Williamsburg, MA
  • Average snowfall in July: 0"

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

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Average snowfall days in July
Williamsburg, MA

Average snowfall days in July - Williamsburg, MA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Williamsburg, MA

Average daylight in July / Average sunshine in July - Williamsburg, MA
  • Average daylight in July: 14h 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 6min).

  • Average sunshine in July: 10h and 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in July
Williamsburg, MA

Average sunshine days in July - Williamsburg, MA
  • Average sunshine days in July: 14.9 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (13.7 days).

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Average UV index in July
Williamsburg, MA

Average UV index in July - Williamsburg, MA
  • Average UV index in July: 6

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in July
Williamsburg, MA

Average cloud cover in July - Williamsburg, MA
  • Average cloud cover in July: 35

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in July
Williamsburg, MA

Average visibility in July - Williamsburg, MA
  • Average visibility in July: 5mi

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

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Williamsburg, Massachusetts, USA

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