July weather forecast
Princeton, MA

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Weather in July

July, like June, in Princeton, Massachusetts, is a moderately hot summer month, with temperature in the range of an average low of 61.3°F (16.3°C) and an average high of 80.4°F (26.9°C).

Temperature

Princeton's temperatures peak on average in July, reaching 80.4°F (26.9°C) at their highest and 61.3°F (16.3°C) at their lowest.

Humidity

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

Rainfall

The wettest months are June and July, with an average 1.3" (33mm) of rainfall.

Snowfall

June through September are months without snowfall in Princeton.

Daylight

The average length of the day in July in Princeton is 14h and 56min.
On the first day of the month, sunrise is at 5:14 am and sunset at 8:28 pm. On the last day of July, sunrise is at 5:39 am and sunset at 8:08 pm EDT.

Sunshine

The months with the most sunshine are July and August, with an average of 9.8h of sunshine.

UV index

With an average maximum UV index of 6, July is the month with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 6 during July translates into the following directions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete 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.
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Frequently asked questions

What are the warmest months in Princeton?

July, having an average high-temperature of 80.4°F (26.9°C) and an average low-temperature of 61.3°F (16.3°C), is the warmest month in Princeton.

What are the temperatures in Princeton in July?

In Princeton, 80.4°F (26.9°C) is the average high-temperature and 61.3°F (16.3°C) is the average low-temperature during July.

What is the average humidity in July in Princeton?

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

What is the wettest month in Princeton?

The months with the most rainfall are June and July, with an average 1.3" (33mm) of precipitation.

How much does it rain in Princeton in July?

In Princeton, in July, during 14 rainfall days, 1.3" (33mm) of precipitation is typically accumulated.

When it does not snow in Princeton?

In Princeton, snow does not fall in June through September.

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

The average day length in July in Princeton, Massachusetts, is 14h and 56min.

When is the sunrise / sunset in July in Princeton?

On the first day of July, sunrise is at 5:14 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:08 pm EDT.

What is the month with the most sunshine in Princeton?

The months with the most sunshine in Princeton, Massachusetts, are July and August, with an average of 9.8h of sunshine.

How many hours of sunshine does Princeton have in July?

In July, the average sunshine duration in Princeton is 9.8h.

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

With an average maximum UV index of 6, July is the month with the highest UV index.

What is the UV index intensity in July in Princeton?

In July, the average daily maximum UV index in Princeton, Massachusetts, is 6. A UV Index reading of 6 to 7 represents 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 July
Princeton, MA

Average temperature in July - Princeton, MA
  • Average high temperature in July: 80.4°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in July: 61.3°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 (17.6°F).

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Average pressure in July
Princeton, MA

Average pressure in July - Princeton, MA
  • Average pressure in July: 29.94"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in July
Princeton, MA

Average wind speed in July - Princeton, MA
  • Average wind speed in July: 5.7mph

The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in July
Princeton, MA

Average humidity in July - Princeton, 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 (73%).

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Average rainfall in July
Princeton, MA

Average rainfall in July - Princeton, MA
  • Average rainfall in July: 1.3"

The wettest months (with the highest rainfall) are June and July (1.3").
The driest month (with the least rainfall) is February (0.71").

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Average rainfall days in July
Princeton, MA

Average rainfall days in July - Princeton, MA
  • Average rainfall days in July: 14 days

The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is February (4.4 days).

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Average snowfall in July
Princeton, MA

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

The month with the highest snowfall is March (2.87").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Princeton, MA

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

The month with the highest number of snowfall days is January (9.2 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
Princeton, MA

Average daylight in July / Average sunshine in July - Princeton, 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: 9h and 5min

The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

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Average sunshine days in July
Princeton, MA

Average sunshine days in July - Princeton, MA
  • Average sunshine days in July: 14.7 days

The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is April (14.3 days).

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Average UV index in July
Princeton, MA

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

The month with the highest UV index is 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
Princeton, MA

Average cloud cover in July - Princeton, MA
  • Average cloud cover in July: 39

The month with the most cloud cover is March (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 38).

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Average visibility in July
Princeton, MA

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

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

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Princeton, Massachusetts, USA

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