July weather forecast and climate
Somerville, NJ

July, the same as June, is another warm summer month in Somerville, New Jersey, with average temperature fluctuating between 84.2°F (29°C) and 66°F (18.9°C).

Temperature

With an average high-temperature of 84.2°F (29°C) and an average low-temperature of 66°F (18.9°C), July is the warmest month.

Heat index

In July, the average heat index is estimated at a hot 92.7°F (33.7°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, clothing, differences in body mass, height, and shape, and metabolic differences affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In July, the average relative humidity is 75%.

Rainfall

In Somerville, in July, it is raining for 16.8 days, with typically 2.87" (73mm) of accumulated precipitation. Throughout the year, there are 157.9 rainfall days, and 28.19" (716mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Somerville.

Daylight

In July, the average length of the day in Somerville, New Jersey, is 14.7h.

Sunshine

July has the most sunshine of the year in Somerville, with an average of 10.4h of sunshine.

UV index

Months with the highest UV index in Somerville are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 6 in July interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the warmest month in Somerville?

With an average high-temperature of 84.2°F (29°C) and an average low-temperature of 66°F (18.9°C), July is the warmest month.

What is the temperature in July in Somerville?

In July, in Somerville, the average high-temperature is 84.2°F (29°C), and the average low-temperature is 66°F (18.9°C). The average heat index (a.k.a. 'feels like', 'real feel'), that takes the relative humidity and factores it into the air temperature reading, in July is appraised at 92.7°F (33.7°C).

What is the average humidity in July in Somerville?

In July, the average relative humidity in Somerville is 75%.

How much does it rain in Somerville in July?

In Somerville, in July, it is raining for 16.8 days, with typically 2.87" (73mm) of accumulated precipitation.

When it does not snow in Somerville?

In Somerville, New Jersey, snow does not fall in June through September.

How many hours of daylight does Somerville have in July?

In July, the average length of the day in Somerville is 14.7h.

What month has the most sunshine in Somerville?

With an average of 10.4h of sunshine, July has the most sunshine of the year in Somerville, New Jersey.

How long on average sun shines in July in Somerville?

In July, the average sunshine in Somerville, New Jersey, is 10.4h.

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

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

What is the UV index intensity in July in Somerville?

The average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays.
Average temperature in July - Somerville, NJ
  • Average high temperature in July: 29°C

The warmest month (with the highest average high temperature) is July (29°C).
The month with the lowest average high temperature is January (2°C).

  • Average low temperature in July: 18.9°C

The month with the highest average low temperature is July (18.9°C).
The coldest month (with the lowest average low temperature) is January (-4.9°C).

Average pressure in July - Somerville, NJ
  • Average pressure in July: 1014.5mbar

The month with the highest atmospheric pressure is November (1019.7mbar).
The month with the lowest atmospheric pressure is June (1013.7mbar).

Average wind speed in July - Somerville, NJ
  • Average wind speed in July: 8.7km/h

The windiest month (with the highest average wind speed) is March (13.9km/h).
The calmest month (with the lowest average wind speed) is August (8.6km/h).

Average humidity in July - Somerville, NJ
  • Average humidity in July: 75%

Months with the highest relative humidity are February, October and December (79%).
The month with the lowest relative humidity is April (74%).

Average rainfall in July - Somerville, NJ
  • Average rainfall in July: 73mm

The wettest month (with the highest rainfall) is December (74mm).
The driest month (with the least rainfall) is September (39mm).

Average rainfall days in July - Somerville, NJ
  • Average rainfall days in July: 16.8 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (9 days).

Average snowfall in July - Somerville, NJ
  • Average snowfall in July: 0mm

The month with the highest snowfall is March (72mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in July - Somerville, NJ
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (6.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in July / Average sunshine in July - Somerville, NJ
  • Average daylight in July: 14.7h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in July: 10.4h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.6h).

Average sunshine days in July - Somerville, NJ
  • Average sunshine days in July: 12.4 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is June (11.7 days).

Average UV index in July - Somerville, NJ
  • Average UV index in July: 6

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

Average cloud cover in July - Somerville, NJ
  • Average cloud cover in July: 34

Months with the most cloud cover are February and December (Cloud cover 49).
Months with the least cloud cover are July and August (Cloud cover 34).

Average visibility in July - Somerville, NJ
  • Average visibility in July: 9km

Months with the highest visibility are January, February, March, April, June, July, August, October, November and December (9km).
Months with the lowest visibility are May and September (8km).