July weather forecast
Plymouth, NH

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Weather in July

July sets a summer crescendo in Plymouth, with the highest average monthly temperature of the year, reaching a warm 77°F (25°C). Days are noticeably longer, and the sky boasts less cloud cover than other months. Lower wind speeds accompanied by high temperatures render July suitable for all types of summer activities. With the end of July, temperature begins a gradual descent, though great outdoor weather conditions persist.

Temperature

In Plymouth, temperatures reach their average annual highs in July, measuring 77°F (25°C) and a minimum average of 56.5°F (13.6°C).

Humidity

In July, the average relative humidity in Plymouth is 78%.

Rainfall

In July, in Plymouth, New Hampshire, the rain falls for 14.2 days. Throughout July, 1.42" (36mm) of precipitation is accumulated. Throughout the year, there are 136.5 rainfall days, and 13.54" (344mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in July is 15h and 4min.
On the first day of July, sunrise is at 5:09 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:10 pm EDT.

Sunshine

In July, the average sunshine is 9.7h.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 5 in July translates into this advice:
Be vigilant - A duty to shield skin and eyes from injury exists. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest in Plymouth?

July proves to be the warmest month in Plymouth, recording an average peak temperature of 77°F (25°C) and a minimum temperature of 56.5°F (13.6°C).

What are July temperatures in Plymouth?

An average high-temperature, in July, in Plymouth, is 77°F (25°C) and the average low-temperature is 56.5°F (13.6°C).

What is the average humidity in July in Plymouth?

In July, the average relative humidity in Plymouth, New Hampshire, is 78%.

How much does it rain in Plymouth in July?

In Plymouth, New Hampshire, in July, it is raining for 14.2 days, with typically 1.42" (36mm) of accumulated precipitation.

When it does not snow in Plymouth?

June through September are months without snowfall in Plymouth, New Hampshire.

How many hours of daylight does Plymouth have in July?

The average day length in July in Plymouth, New Hampshire, is 15h and 4min.

When is the sunrise / sunset in July in Plymouth?

On the first day of July in Plymouth, New Hampshire, sunrise is at 5:09 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:10 pm EDT.

How many hours of sunshine does Plymouth have in July?

In July, the average sunshine duration in Plymouth, New Hampshire, is 9.7h.

When is the highest UV index in Plymouth?

The months with the highest UV index in Plymouth, New Hampshire, are May through August, with an average maximum UV index of 5.

How high is the UV index in July in Plymouth?

The average daily maximum UV index in July in Plymouth, New Hampshire, is 5. A UV Index reading of 3 to 5 represents a medium health risk from 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
Plymouth, NH

Average temperature in July - Plymouth, NH
  • Average high temperature in July: 77°F

The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (23.9°F).

  • Average low temperature in July: 56.5°F

The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).

Average pressure in July
Plymouth, NH

Average pressure in July - Plymouth, NH
  • Average pressure in July: 29.93"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in July
Plymouth, NH

Average wind speed in July - Plymouth, NH
  • Average wind speed in July: 4.8mph

The windiest months (with the highest average wind speed) are January, February and April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

Average humidity in July
Plymouth, NH

Average humidity in July - Plymouth, NH
  • Average humidity in July: 78%

The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is May (76%).

Average rainfall in July
Plymouth, NH

Average rainfall in July - Plymouth, NH
  • Average rainfall in July: 1.42"

The wettest month (with the highest rainfall) is October (1.5").
The driest month (with the least rainfall) is January (0.79").

Average rainfall days in July
Plymouth, NH

Average rainfall days in July - Plymouth, NH
  • Average rainfall days in July: 14.2 days

The month with the highest number of rainy days is July (14.2 days).
The month with the least rainy days is November (8.2 days).

Average snowfall in July
Plymouth, NH

Average snowfall in July - Plymouth, NH
  • Average snowfall in July: 0"

The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in July
Plymouth, NH

Average snowfall days in July - Plymouth, NH
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in July /
Average sunshine in July
Plymouth, NH

Average daylight in July / Average sunshine in July - Plymouth, NH
  • Average daylight in July: 15h and 1min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in July: 9h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).

Average sunshine days in July
Plymouth, NH

Average sunshine days in July - Plymouth, NH
  • Average sunshine days in July: 12.7 days

The month with the most sunshine days is September (17 days).
The month with the least sunshine days is February (10.8 days).

Average UV index in July
Plymouth, NH

Average UV index in July - Plymouth, NH
  • Average UV index in July: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 1).

Average cloud cover in July
Plymouth, NH

Average cloud cover in July - Plymouth, NH
  • Average cloud cover in July: 39

The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 38).

Average visibility in July
Plymouth, NH

Average visibility in July - Plymouth, NH
  • Average visibility in July: 5mi

The months with the highest visibility are April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February, March and September (4mi).

Plymouth, New Hampshire, USA

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