July weather forecastNewton, MA

July
Weather in July
The peak of summer, July, also marks the hottest month in Newton. High temperatures stretch to a sweltering 81.9°F (27.7°C) while the lows reflect a warm 64°F (17.8°C). Despite the generous daylight hours, the town does not fully escape the cloud cover, resulting in a mix of sun-soaked and shadowy periods. The rainfall fails to provide any significant relief from the searing temperatures, remaining at average levels. Even winds slow their pace during July, resulting in a typical New England summer experience.Temperature
Newton experiences its highest temperatures in July, with an average peak of 81.9°F (27.7°C) and a low of 64°F (17.8°C).Heat index
July's heat index is appraised at a tropical 87.8°F (31°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.Know that the heat index computations account for shaded terrains and slight winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Humidity
In Newton, the average relative humidity in July is 74%.Rainfall
In Newton, Massachusetts, during July, the rain falls for 10.2 days and regularly aggregates up to 0.51" (13mm) of precipitation. Throughout the year, there are 85.9 rainfall days, and 5.87" (149mm) of precipitation is accumulated.Snowfall
June through October are months without snowfall.Daylight
The average length of the day in July is 14h and 55min.On the first day of July, sunrise is at 5:12 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:05 pm EDT.
Sunshine
In Newton, the average sunshine in July is 10.3h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 6 in July translates into the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Newton, MA
- Average high temperature in July: 81.9°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in July: 64°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in July
Newton, 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
Newton, MA
- Average wind speed in July: 5.9mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in July
Newton, MA
- Average humidity in July: 74%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).
Average rainfall in July
Newton, MA
- Average rainfall in July: 0.51"
The wettest month (with the highest rainfall) is November (0.67").
The driest month (with the least rainfall) is September (0.24").
Average rainfall days in July
Newton, MA
- Average rainfall days in July: 10.2 days
The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in July
Newton, MA
- Average snowfall in July: 0"
The month with the highest snowfall is December (0.91").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in July
Newton, MA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Newton, MA
- Average daylight in July: 14h and 54min
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 18min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in July
Newton, MA
- Average sunshine days in July: 17.8 days
The months with the most sunshine days are January and November (22.5 days).
The month with the least sunshine days is June (17.5 days).
Average UV index in July
Newton, 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
Newton, MA
- Average cloud cover in July: 35
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in July
Newton, MA
- Average visibility in July: 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).





