Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
Onset of October witnesses a reduction in the average high-temperature, falling from a warm 74.5°F (23.6°C) in September to a comfortable 61.7°F (16.5°C). The nighttime temperature, during October, averages of 45.7°F (7.6°C).Humidity
With an average relative humidity of 72%, October is the least humid month.Rainfall
In Peru, in October, during 12.5 rainfall days, 2.83" (72mm) of precipitation is typically accumulated. Throughout the year, there are 151.4 rainfall days, and 30.67" (779mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. October is the first month it typically snows in Peru, Illinois. Throughout October, in the average 0.4 snowfall days, it receives 0.43" (11mm) of snow. Throughout the year, in Peru, there are 40.5 snowfall days, and 15.16" (385mm) of snow is accumulated.Daylight
The average length of the day in October is 11h and 5min.On the first day of October, sunrise is at 6:54 am and sunset at 6:37 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:52 pm CDT.
Sunshine
In October, the average sunshine is 5.7h.UV index
In Peru, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum UV index of 3 in October translates into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in October?
What is the least humid month?
What is the average humidity in October?
How many days does it rain in October in Peru?
When does it start to snow?
What is the average length of the day in October?
What time are sunrise and sunset in October in Peru?
How long on average sun shines in October in Peru?
How high is the UV index in October?
Average temperature in October
Peru, IL
- Average high temperature in October: 61.7°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in October: 45.7°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 (16.9°F).
Average pressure in October
Peru, IL
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in October
Peru, IL
- Average wind speed in October: 9.2mph
The windiest months (with the highest average wind speed) are January and April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in October
Peru, IL
- Average humidity in October: 72%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in October
Peru, IL
- Average rainfall in October: 2.83"
The wettest month (with the highest rainfall) is May (4.65").
The driest month (with the least rainfall) is February (1.57").
Average rainfall days in October
Peru, IL
- Average rainfall days in October: 12.5 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (5.5 days).
Average snowfall in October
Peru, IL
- Average snowfall in October: 0.43"
The month with the highest snowfall is January (4.37").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Peru, IL
- Average snowfall days in October: 0.4 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Peru, IL
- 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 June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in October
Peru, IL
- Average sunshine days in October: 16.1 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in October
Peru, IL
- 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 and December (UV index 1).
Average cloud cover in October
Peru, IL
- Average cloud cover in October: 40
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in October
Peru, IL
- Average visibility in October: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Peru, Illinois, USA
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