July weather forecast
Lowell, MA

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Weather in July

July is the height of summer in Lowell, Massachusetts, characterized by soaring temperatures and high UV index levels. The highest temperature of the year is being recorded in July, with an average peak of 82.2°F (27.9°C). Amid the brilliance of summer, conditions veer towards the warmer end of the scale affecting the overall climate of the region. Longer sunshine hours combined with substantial daylight hours make July a typical summer month.

Temperature

July is the month when Lowell experiences its warmest temperatures, averaging a high of 82.2°F (27.9°C) and a low of 63.1°F (17.3°C).

Heat index

The heat index value for July is calculated to be a tropical 87.8°F (31°C). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 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 is 73%.

Rainfall

In July, the rain falls for 15.4 days. Throughout July, 2.05" (52mm) of precipitation is accumulated. Throughout the year, there are 145.9 rainfall days, and 27.48" (698mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in July is 14h and 57min.
On the first day of the month, sunrise is at 5:11 am and sunset at 8:26 pm. On the last day of July, sunrise is at 5:36 am and sunset at 8:06 pm EDT.

Sunshine

In July, the average sunshine is 10.3h.

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 health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: During July, 6 as the daily maximum UV index converts into the following advice:
Shun overexposure. Protection from sun ravages is indispensable. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

July stands out as Lowell's warmest month, with temperatures ranging between an average high of 82.2°F (27.9°C) and a low of 63.1°F (17.3°C).

What are the temperatures in July?

Lowell in July has an average high-temperature of 82.2°F (27.9°C) and an average low-temperature of 63.1°F (17.3°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, in July is calculated to be 87.8°F (31°C).

What is the average humidity in July?

In July, the average relative humidity in Lowell is 73%.

How many days does it rain in July in Lowell?

In Lowell, in July, during 15.4 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.

When it does not snow?

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

How many hours of daylight does Lowell have in July?

In Lowell, the average day length in July is 14h and 57min.

When is the sunrise / sunset in July?

On the first day of July, sunrise is at 5:11 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 8:06 pm EDT.

How many hours of sunshine does Lowell have in July?

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

What is the month with the highest UV index?

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

What is the UV index intensity in July?

In Lowell, the average daily maximum UV index in July 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 July
Lowell, MA

Average temperature in July - Lowell, MA
  • Average high temperature in July: 82.2°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in July: 63.1°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).

Average pressure in July
Lowell, MA

Average pressure in July - Lowell, 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).

Average wind speed in July
Lowell, MA

Average wind speed in July - Lowell, MA
  • Average wind speed in July: 5.5mph

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

Average humidity in July
Lowell, MA

Average humidity in July - Lowell, MA
  • Average humidity in July: 73%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (70%).

Average rainfall in July
Lowell, MA

Average rainfall in July - Lowell, MA
  • Average rainfall in July: 2.05"

The wettest month (with the highest rainfall) is December (2.87").
The driest month (with the least rainfall) is September (1.46").

Average rainfall days in July
Lowell, MA

Average rainfall days in July - Lowell, MA
  • Average rainfall days in July: 15.4 days

The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (6.9 days).

Average snowfall in July
Lowell, MA

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

The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in July
Lowell, MA

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

The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in July / Average sunshine in July - Lowell, MA
  • Average daylight in July: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in July: 10h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in July
Lowell, MA

Average sunshine days in July - Lowell, MA
  • Average sunshine days in July: 14.2 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (13.6 days).

Average UV index in July
Lowell, MA

Average UV index in July - Lowell, MA
  • Average UV index in July: 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 July
Lowell, MA

Average cloud cover in July - Lowell, MA
  • Average cloud cover in July: 34

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in July
Lowell, MA

Average visibility in July - Lowell, MA
  • Average visibility in July: 6mi

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

Lowell, Massachusetts, USA

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