October weather forecast and climate
Somerville, NJ

October, the same as September, is another comfortable autumn month in Somerville, New Jersey, with average temperature ranging between max 63.5°F (17.5°C) and min 48°F (8.9°C).

Temperature

In Somerville, the average high-temperature in October decreases, from a moderately hot 75.2°F (24°C) in September, to a comfortable 63.5°F (17.5°C). In October, in Somerville, the average low-temperature is 48°F (8.9°C).

Humidity

February, October and December, with an average relative humidity of 79%, are most humid months.

Rainfall

In Somerville, it is raining for 13.5 days, with typically 2.6" (66mm) of accumulated precipitation. Throughout the year, in Somerville, New Jersey, there are 157.9 rainfall days, and 28.19" (716mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. In Somerville, during the entire year, snow falls for 23.8 days, and aggregates up to 9.53" (242mm) of snow.

Daylight

In Somerville, the average length of the day is 11.1h.

Sunshine

In Somerville, New Jersey, the average sunshine is 5.6h.

UV index

The average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: In October, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in October in Somerville?

In October, in Somerville, New Jersey, the average high-temperature is 63.5°F (17.5°C), and the average low-temperature is 48°F (8.9°C).

What are the most humid months in Somerville?

February, October and December, with an average relative humidity of 79%, are most humid months in Somerville, New Jersey.

What is the average humidity in October in Somerville?

In Somerville, New Jersey, the average relative humidity in October is 79%.

How much does it rain in Somerville in October?

In October, in Somerville, New Jersey, the rain falls for 13.5 days. Throughout October, 2.6" (66mm) of precipitation is accumulated.

When does it start to snow in Somerville?

October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow.

What is the average length of the day in October in Somerville?

In October, the average length of the day in Somerville, New Jersey, is 11.1h.

How long on average sun shines in October in Somerville?

In Somerville, New Jersey, the average sunshine in October is 5.6h.

What is the UV index reading in October in Somerville?

In Somerville, New Jersey, the average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.
Average temperature in October - Somerville, NJ
  • Average high temperature in October: 17.5°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 October: 8.9°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 October - Somerville, NJ
  • Average pressure in October: 1016.8mbar

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 October - Somerville, NJ
  • Average wind speed in October: 11.1km/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 October - Somerville, NJ
  • Average humidity in October: 79%

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 October - Somerville, NJ
  • Average rainfall in October: 66mm

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

Average rainfall days in October - Somerville, NJ
  • Average rainfall days in October: 13.5 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 October - Somerville, NJ
  • Average snowfall in October: 2mm

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 October - Somerville, NJ
  • Average snowfall days in October: 0.1 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 October / Average sunshine in October - Somerville, NJ
  • Average daylight in October: 11.1h

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 October: 5.6h

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 October - Somerville, NJ
  • Average sunshine days in October: 16.2 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 October - Somerville, NJ
  • Average UV index in October: 3

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 October - Somerville, NJ
  • Average cloud cover in October: 43

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 October - Somerville, NJ
  • Average visibility in October: 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).