October weather forecast
Waterloo, IL

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Weather in October

October, like September, in Waterloo, Illinois, is another enjoyable autumn month, with an average temperature ranging between max 66.7°F (19.3°C) and min 48.9°F (9.4°C).

Temperature

The commencement of October indicates a shift in the average high-temperature, receding from September's moderately hot 79.5°F (26.4°C) to a refreshing 66.7°F (19.3°C). In October, the temperature in Waterloo drops to an average of 48.9°F (9.4°C) at night.

Humidity

With an average relative humidity of 71%, October is the least humid month in Waterloo.

Rainfall

In Waterloo, in October, during 9.5 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. Throughout the year, in Waterloo, there are 139.8 rainfall days, and 25.63" (651mm) of precipitation is accumulated.

Snowfall

April through August and October are months without snowfall.

Daylight

In October, the average length of the day in Waterloo is 11h and 11min.
On the first day of October in Waterloo, Illinois, sunrise is at 6:57 am and sunset at 6:42 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 6:01 pm CDT.

Sunshine

The average sunshine in October in Waterloo is 6.3h.

UV index

In Waterloo, the average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 3 during October translates into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average October temperature in Waterloo?

The high-temperature, in October, in Waterloo, is 66.7°F (19.3°C), while the low-temperature averages to 48.9°F (9.4°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is computed to be 95°F (35°C).

What is the least humid month in Waterloo?

October is the least humid month in Waterloo, with an average relative humidity of 71%.

What is the average humidity in October in Waterloo?

The average relative humidity in October in Waterloo, Illinois, is 71%.

How many days does it rain in October in Waterloo?

In Waterloo, Illinois, in October, during 9.5 rainfall days, 1.85" (47mm) of precipitation is typically accumulated.

When it does not snow in Waterloo?

April through August and October are months without snowfall in Waterloo, Illinois.

Does it snow in Waterloo in October?

In October, in Waterloo, Illinois, it doesn't snow. September is the latest month when it typically snows.

How many hours of daylight does Waterloo have in October?

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

When is the sunrise / sunset in October in Waterloo?

In October, on the first day of the month, sunrise is at 6:57 am and sunset at 6:42 pm. On the last day of the month, in Waterloo, Illinois, sunrise is at 7:26 am and sunset at 6:01 pm CDT.

How many hours of sunshine does Waterloo have in October?

The average sunshine duration in October in Waterloo, Illinois, is 6.3h.

How high is the UV index in October in Waterloo?

In October, the average daily maximum UV index in Waterloo, Illinois, is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
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
Waterloo, IL

Average temperature in October - Waterloo, IL
  • Average high temperature in October: 66.7°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (38.3°F).

  • Average low temperature in October: 48.9°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average pressure in October
Waterloo, IL

Average pressure in October - Waterloo, IL
  • Average pressure in October: 30.04"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in October
Waterloo, IL

Average wind speed in October - Waterloo, IL
  • Average wind speed in October: 7.7mph

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

Average humidity in October
Waterloo, IL

Average humidity in October - Waterloo, IL
  • Average humidity in October: 71%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in October
Waterloo, IL

Average rainfall in October - Waterloo, IL
  • Average rainfall in October: 1.85"

The wettest month (with the highest rainfall) is May (3.19").
The driest months (with the least rainfall) are February and November (1.34").

Average rainfall days in October
Waterloo, IL

Average rainfall days in October - Waterloo, IL
  • Average rainfall days in October: 9.5 days

The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in October
Waterloo, IL

Average snowfall in October - Waterloo, IL
  • Average snowfall in October: 0"

The month with the highest snowfall is January (1.89").
The months with the least snowfall are April, May, June, July, August and October (0").

Average snowfall days in October
Waterloo, IL

Average snowfall days in October - Waterloo, IL
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August and October (0 days).

Average daylight in October /
Average sunshine in October
Waterloo, IL

Average daylight in October / Average sunshine in October - Waterloo, IL
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in October: 6h and 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in October
Waterloo, IL

Average sunshine days in October - Waterloo, IL
  • Average sunshine days in October: 20 days

The month with the most sunshine days is January (20.6 days).
The month with the least sunshine days is July (12.5 days).

Average UV index in October
Waterloo, IL

Average UV index in October - Waterloo, IL
  • Average UV index in October: 3

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

Average cloud cover in October
Waterloo, IL

Average cloud cover in October - Waterloo, IL
  • Average cloud cover in October: 32

The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are June and August (Cloud cover 27).

Average visibility in October
Waterloo, IL

Average visibility in October - Waterloo, IL
  • 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).

Waterloo, Illinois, USA

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