October weather forecast
West Allis, WI

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Weather in October

October in West Allis becomes noticeably colder as it transitions from 70.5°F (21.4°C) in September to a lower average of 57.6°F (14.2°C). The fall colors reach their zenith, creating a spectacular canvas of reds, yellows, and oranges. This month experiences a considerable decrease in daylight hours, signaling shorter days and the impending arrival of winter. Despite the chilly weather creeping in, the stunning displays of autumn foliage and the fewer rainfall make for picture-worthy vistas throughout the city. October is ideal for enjoying warm coffees outdoor while wrapped up in a cozy sweater admiring the fall colors.

Temperature

With the onset of October, West Allis experiences a modest temperature adjustment, with the average high-temperature receding from an agreeable 70.5°F (21.4°C) in September to a refreshing 57.6°F (14.2°C). Nighttime temperature dips to a mean of 45.5°F (7.5°C) during October.

Humidity

The least humid month in West Allis, Wisconsin, is October, with an average relative humidity of 75%.

Rainfall

In West Allis, in October, it is raining for 12.2 days, with typically 1.93" (49mm) of accumulated precipitation. Throughout the year, in West Allis, there are 126 rainfall days, and 19.37" (492mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.6 snowfall days, it receives 0.79" (20mm) of snow. Throughout the year, there are 43.6 snowfall days, and 11.22" (285mm) of snow is accumulated.

Daylight

The average length of the day in October is 11h and 1min.
On the first day of the month, sunrise is at 6:50 am and sunset at 6:32 pm. On the last day of October, sunrise is at 7:26 am and sunset at 5:44 pm CDT.

Sunshine

In October, the average sunshine in West Allis is 5.3h.

UV index

In West Allis, Wisconsin, the average daily maximum UV index in October is 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 2 during October translates into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
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Frequently asked questions

What are October temperatures in West Allis?

West Allis in October has an average high-temperature of 57.6°F (14.2°C) and an average low-temperature of 45.5°F (7.5°C).

What is the least humid month in West Allis?

With an average relative humidity of 75%, October is the least humid month in West Allis, Wisconsin.

What is the average humidity in October in West Allis?

In West Allis, Wisconsin, the average relative humidity in October is 75%.

How many days does it rain in October in West Allis?

In West Allis, during October, the rain falls for 12.2 days and regularly aggregates up to 1.93" (49mm) of precipitation.

When does it start to snow in West Allis?

October is the first month it typically snows in West Allis. Throughout October, in the average 0.6 snowfall days, it receives 0.79" (20mm) of snow.

How many hours of daylight does West Allis have in October?

In West Allis, the average day length in October is 11h and 1min.

What time are sunrise and sunset in October in West Allis?

On the first day of October in West Allis, Wisconsin, sunrise is at 6:50 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 5:44 pm CDT.

How long on average sun shines in October in West Allis?

In October, the average sunshine duration in West Allis is 5.3h.

What is the UV index reading in October in West Allis?

The average daily maximum UV index in October is 2. A UV Index reading of 2, and below, represents a low 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
West Allis, WI

Average temperature in October - West Allis, WI
  • Average high temperature in October: 57.6°F

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (26.1°F).

  • Average low temperature in October: 45.5°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

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Average pressure in October
West Allis, WI

Average pressure in October - West Allis, WI
  • Average pressure in October: 29.99"Hg

The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in October
West Allis, WI

Average wind speed in October - West Allis, WI
  • Average wind speed in October: 10.1mph

The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

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Average humidity in October
West Allis, WI

Average humidity in October - West Allis, WI
  • Average humidity in October: 75%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (75%).

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Average rainfall in October
West Allis, WI

Average rainfall in October - West Allis, WI
  • Average rainfall in October: 1.93"

The wettest month (with the highest rainfall) is July (2.56").
The driest months (with the least rainfall) are February and December (0.83").

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Average rainfall days in October
West Allis, WI

Average rainfall days in October - West Allis, WI
  • Average rainfall days in October: 12.2 days

The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (3.3 days).

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Average snowfall in October
West Allis, WI

Average snowfall in October - West Allis, WI
  • Average snowfall in October: 0.79"

The month with the highest snowfall is January (3.03").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in October
West Allis, WI

Average snowfall days in October - West Allis, WI
  • Average snowfall days in October: 0.6 days

The month with the highest number of snowfall days is January (11.6 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
West Allis, WI

Average daylight in October / Average sunshine in October - West Allis, WI
  • Average daylight in October: 11h and 0min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in October: 5h and 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in October
West Allis, WI

Average sunshine days in October - West Allis, WI
  • Average sunshine days in October: 15.5 days

The month with the most sunshine days is November (17.4 days).
The months with the least sunshine days are July and August (12.7 days).

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Average UV index in October
West Allis, WI

Average UV index in October - West Allis, WI
  • Average UV index in October: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in October
West Allis, WI

Average cloud cover in October - West Allis, WI
  • Average cloud cover in October: 46

The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 29).

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Average visibility in October
West Allis, WI

Average visibility in October - West Allis, WI
  • Average visibility in October: 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).

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West Allis, Wisconsin, USA

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