October weather forecast
Mountainside, NJ

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Weather in October

October, the same as September, is another enjoyable autumn month in Mountainside, New Jersey, with temperature in the range of an average high of 63.1°F (17.3°C) and an average low of 49.1°F (9.5°C).

Temperature

October brings a minor decrease, with the average high-temperature reducing from a warm 75.4°F (24.1°C) in September to an enjoyable 63.1°F (17.3°C). An average minimum temperature of 49.1°F (9.5°C) is recorded in Mountainside during the month of October.

Humidity

February, October and December, with an average relative humidity of 78%, are the most humid months.

Rainfall

In October, in Mountainside, the rain falls for 13.4 days. Throughout October, 2.83" (72mm) of precipitation is accumulated. In Mountainside, New Jersey, during the entire year, the rain falls for 160.7 days and collects up to 30.12" (765mm) of precipitation.

Snowfall

Months with snowfall in Mountainside, New Jersey, are January through May, October through December. October is the first month it typically snows in Mountainside. Throughout October, in the average 0.1 snowfall days, it receives 0.12" (3mm) of snow. In Mountainside, during the entire year, snow falls for 25.4 days and aggregates up to 10.31" (262mm) of snow.

Daylight

In October, the average length of the day is 11h and 7min.
On the first day of the month, sunrise is at 6:54 am and sunset at 6:39 pm. On the last day of October, in Mountainside, New Jersey, sunrise is at 7:27 am and sunset at 5:54 pm EDT.

Sunshine

In October, the average sunshine is 5.7h.

UV index

In Mountainside, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 3 in October translates into this advice:
Heed the precautions - It is counselled to guard against solar damage. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What is the usual temperature for Mountainside in October?

An average high-temperature, in October, in Mountainside, is 63.1°F (17.3°C) and the average low-temperature is 49.1°F (9.5°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 87.8°F (31°C).

What is the most humid month in Mountainside?

February, October and December, with an average relative humidity of 78%, are most humid months in Mountainside.

What is the average humidity in October in Mountainside?

In Mountainside, New Jersey, the average relative humidity in October is 78%.

How much does it rain in Mountainside in October?

In Mountainside, New Jersey, in October, during 13.4 rainfall days, 2.83" (72mm) of precipitation is typically accumulated.

When does it start snowing in Mountainside?

October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.12" (3mm) of snow.

How many hours of daylight does Mountainside have in October?

In October, the average day length is 11h and 7min.

When is the sunrise / sunset in October in Mountainside?

In October, on the first day of the month, sunrise is at 6:54 am and sunset at 6:39 pm. On the last day of the month, in Mountainside, sunrise is at 7:27 am and sunset at 5:54 pm EDT.

How many hours of sunshine does Mountainside have in October?

The average sunshine duration in October in Mountainside, New Jersey, is 5.7h.

How high is the UV index in October in Mountainside?

In Mountainside, New Jersey, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a moderate 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 October
Mountainside, NJ

Average temperature in October - Mountainside, NJ
  • Average high temperature in October: 63.1°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in October: 49.1°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

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Average pressure in October
Mountainside, NJ

Average pressure in October - Mountainside, NJ
  • Average pressure in October: 30.02"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in October
Mountainside, NJ

Average wind speed in October - Mountainside, NJ
  • Average wind speed in October: 7.3mph

The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

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Average humidity in October
Mountainside, NJ

Average humidity in October - Mountainside, NJ
  • Average humidity in October: 78%

The months with the highest relative humidity are February, October and December (78%).
The months with the lowest relative humidity are April and August (73%).

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Average rainfall in October
Mountainside, NJ

Average rainfall in October - Mountainside, NJ
  • Average rainfall in October: 2.83"

The wettest month (with the highest rainfall) is December (3.19").
The driest month (with the least rainfall) is September (1.69").

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Average rainfall days in October
Mountainside, NJ

Average rainfall days in October - Mountainside, NJ
  • Average rainfall days in October: 13.4 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (9.5 days).

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Average snowfall in October
Mountainside, NJ

Average snowfall in October - Mountainside, NJ
  • Average snowfall in October: 0.12"

The month with the highest snowfall is March (3.23").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in October
Mountainside, NJ

Average snowfall days in October - Mountainside, NJ
  • Average snowfall days in October: 0.1 days

The months with the highest number of snowfall days are January and February (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in October /
Average sunshine in October
Mountainside, NJ

Average daylight in October / Average sunshine in October - Mountainside, NJ
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in October: 5h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in October
Mountainside, NJ

Average sunshine days in October - Mountainside, NJ
  • Average sunshine days in October: 15.5 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is June (11.4 days).

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Average UV index in October
Mountainside, NJ

Average UV index in October - Mountainside, NJ
  • Average UV index in October: 3

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).

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Average cloud cover in October
Mountainside, NJ

Average cloud cover in October - Mountainside, NJ
  • Average cloud cover in October: 42

The months with the most cloud cover are February, March and December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 32).

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Average visibility in October
Mountainside, NJ

Average visibility in October - Mountainside, NJ
  • Average visibility in October: 6mi

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

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Mountainside, New Jersey, USA

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