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
October ushers in a slight temperature change, with average high-temperatures reducing from September's warm 78.3°F (25.7°C) to a comfortable 66°F (18.9°C). During the nights in October, the temperature in Salem averages to a chilly 49.1°F (9.5°C).Humidity
October is the least humid month, with an average relative humidity of 71%.Rainfall
In Salem, in October, it is raining for 8.5 days, with typically 1.38" (35mm) of accumulated precipitation. Throughout the year, in Salem, there are 123.2 rainfall days, and 15.08" (383mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In October, the average length of the day is 11h and 11min.On the first day of October, sunrise is at 6:52 am and sunset at 6:38 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:56 pm CDT.
Sunshine
The average sunshine in October is 6.3h.UV index
In Salem, the average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high UV index of 3 in October translates into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are October temperatures?
What is the least humid month?
What is the average humidity in October in Salem?
How much does it rain in October?
When it does not snow in Salem?
Does it snow in October?
How many hours of daylight does Salem have in October?
When is the sunrise / sunset in October?
How long on average sun shines in October in Salem?
What is the UV index reading in October?
Average temperature in October
Salem, IL
- Average high temperature in October: 66°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in October: 49.1°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in October
Salem, 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 (29.93"Hg).
Average wind speed in October
Salem, IL
- Average wind speed in October: 8.5mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in October
Salem, IL
- Average humidity in October: 71%
The months with the highest relative humidity are May, July and August (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in October
Salem, IL
- Average rainfall in October: 1.38"
The wettest month (with the highest rainfall) is April (2.01").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in October
Salem, IL
- Average rainfall days in October: 8.5 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in October
Salem, IL
- Average snowfall in October: 0"
The month with the highest snowfall is January (0.63").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
Salem, IL
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is January (5.1 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
Salem, 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 24min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in October
Salem, IL
- Average sunshine days in October: 20.8 days
The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in October
Salem, 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, November and December (UV index 2).
Average cloud cover in October
Salem, IL
- Average cloud cover in October: 34
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in October
Salem, 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).
Salem, Illinois, USA
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