October weather forecastPeoria, IL

October
Weather in October
As Peoria moves further into fall, October brings a significant drop in temperatures and a discernible chill in the air. The change in weather from the preceding summer season is evident, with shorter days and longer nights. Concurrently, the city becomes a vibrant canvas of colors, with trees transitioning their wardrobe to shades of red, orange, and yellow. Despite the lowered temperatures, the increased wind speed, coupled with the reduced humidity, introduces a sharp, crisp feel to the air. The city comes alive with pumpkin patches, corn mazes, and Halloween festivities, ingraining October with its own unique charm.Temperature
In October, the average high-temperature decreases from a moderately hot 76.1°F (24.5°C) in September to a comfortable 62.1°F (16.7°C). Throughout October, Peoria registers a consistent average low-temperature of 46.4°F (8°C).Humidity
October is the least humid month, with an average relative humidity of 71%.Rainfall
In October, the rain falls for 10.3 days. Throughout October, 1.46" (37mm) of precipitation is accumulated. In Peoria, during the entire year, the rain falls for 129.2 days and collects up to 17.24" (438mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Peoria. October is the first month it typically snows in Peoria. Throughout October, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. In Peoria, during the entire year, snow falls for 26.7 days and aggregates up to 7.09" (180mm) 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 6:55 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 CDT.
Sunshine
In October, the average sunshine is 5.9h.UV index
In October, the average daily maximum UV index in Peoria is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The daily maximum UV index of 3 in October interprets into the following advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Around midday, solar radiation is most harmful; hence, exposure should be limited. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Peoria, IL
- Average high temperature in October: 62.1°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in October: 46.4°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in October
Peoria, IL
- Average pressure in October: 30.02"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in October
Peoria, IL
- Average wind speed in October: 9.3mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in October
Peoria, IL
- Average humidity in October: 71%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall in October
Peoria, IL
- Average rainfall in October: 1.46"
The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in October
Peoria, IL
- Average rainfall days in October: 10.3 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in October
Peoria, IL
- Average snowfall in October: 0.08"
The month with the highest snowfall is January (2.36").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Peoria, IL
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is January (9 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
Peoria, IL
- Average daylight in October: 11h and 6min
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 54min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in October
Peoria, IL
- Average sunshine days in October: 19.4 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in October
Peoria, IL
- 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, November and December (UV index 2).
Average cloud cover in October
Peoria, IL
- Average cloud cover in October: 36
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility in October
Peoria, IL
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).





