October weather forecast
Mendham, NJ

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Weather in October

October, the same as September, is another enjoyable autumn month in Mendham, New Jersey, with an average temperature varying between 47.1°F (8.4°C) and 62.2°F (16.8°C).

Temperature

October brings a minor decrease, with the average high-temperature reducing from a warm 74.5°F (23.6°C) in September to an enjoyable 62.2°F (16.8°C). Throughout October, Mendham witnesses a consistent average low-temperature of 47.1°F (8.4°C).

Humidity

February and October, with an average relative humidity of 80%, are the most humid months.

Rainfall

In Mendham, in October, during 13.9 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. Throughout the year, there are 162.6 rainfall days, and 33.11" (841mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 28.5 snowfall days, and 14.49" (368mm) of snow is accumulated.

Daylight

The average length of the day in October is 11h and 6min.
On the first day of the month, sunrise is at 6:55 am and sunset at 6:39 pm. On the last day of October, sunrise is at 7:28 am and sunset at 5:55 pm EDT.

Sunshine

In October, the average sunshine is 5.6h.

UV index

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 unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In October, a daily UV index of 3 turns into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average October temperature?

In Mendham, in October, the average high-temperature is 62.2°F (16.8°C), and the average low-temperature is 47.1°F (8.4°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is estimated at 86°F (30°C).

What is the most humid month in Mendham?

The months with the highest humidity are February and October, with an average relative humidity of 80%.

What is the average humidity in October?

In October, the average relative humidity is 80%.

How many days does it rain in October?

In Mendham, during October, the rain falls for 13.9 days and regularly aggregates up to 3.03" (77mm) of precipitation.

When does it start to snow?

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

How many hours of daylight does Mendham have in October?

In Mendham, the average day length in October is 11h and 6min.

What time are sunrise and sunset in October?

In October, on the first day of the month, sunrise is at 6:55 am and sunset at 6:39 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:55 pm EDT.

How long on average sun shines in October?

In October, the average sunshine duration in Mendham is 5.6h.

What is the UV index reading in October?

In October, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Mendham, NJ

Average temperature in October - Mendham, NJ
  • Average high temperature in October: 62.2°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in October: 47.1°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

Average pressure in October
Mendham, NJ

Average pressure in October - Mendham, NJ
  • Average pressure in October: 30.03"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).

Average wind speed in October
Mendham, NJ

Average wind speed in October - Mendham, NJ
  • Average wind speed in October: 6.7mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in October
Mendham, NJ

Average humidity in October - Mendham, NJ
  • Average humidity in October: 80%

The months with the highest relative humidity are February and October (80%).
The month with the lowest relative humidity is April (75%).

Average rainfall in October
Mendham, NJ

Average rainfall in October - Mendham, NJ
  • Average rainfall in October: 3.03"

The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in October
Mendham, NJ

Average rainfall days in October - Mendham, NJ
  • Average rainfall days in October: 13.9 days

The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is January (8.9 days).

Average snowfall in October
Mendham, NJ

Average snowfall in October - Mendham, NJ
  • Average snowfall in October: 0.08"

The month with the highest snowfall is March (4.49").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in October
Mendham, NJ

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

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

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

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

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

Average sunshine days in October
Mendham, NJ

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

The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (11.4 days).

Average UV index in October
Mendham, NJ

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

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

Average cloud cover in October
Mendham, NJ

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

The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in October
Mendham, NJ

Average visibility in October - Mendham, NJ
  • Average visibility in October: 5mi

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

Mendham, New Jersey, USA

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