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
A subtle decrease in the average high-temperature marks October, falling from September's moderately hot 79.7°F (26.5°C) to a comfortable 67.1°F (19.5°C). Saint Johns's average low-temperature for the month of October records at a frosty 49.3°F (9.6°C).Humidity
October is the least humid month, with an average relative humidity of 71%.Rainfall
In Saint Johns, in October, it is raining for 9.9 days, with typically 2.36" (60mm) of accumulated precipitation. Throughout the year, there are 147.6 rainfall days, and 29.17" (741mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Saint Johns.Daylight
In Saint Johns, the average length of the day in October is 11h and 12min.On the first day of October, sunrise is at 6:53 am and sunset at 6:39 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:58 pm CDT.
Sunshine
The average sunshine in October is 6.4h.UV index
In October, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 3 in October transforms into this advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
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?
How many days does it rain in October?
When it does not snow?
Does it snow in October?
How many hours of daylight does Saint Johns have in October?
What time are sunrise and sunset in October?
How many hours of sunshine does Saint Johns have in October?
What is the UV index intensity in October?
Average temperature in October
Saint Johns, IL
- Average high temperature in October: 67.1°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 (38.8°F).
- Average low temperature in October: 49.3°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 (25.7°F).
Average pressure in October
Saint Johns, 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
Saint Johns, IL
- Average wind speed in October: 8mph
The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in October
Saint Johns, 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
Saint Johns, IL
- Average rainfall in October: 2.36"
The wettest month (with the highest rainfall) is April (3.58").
The driest month (with the least rainfall) is January (1.5").
Average rainfall days in October
Saint Johns, IL
- Average rainfall days in October: 9.9 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is December (8.2 days).
Average snowfall in October
Saint Johns, IL
- Average snowfall in October: 0"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in October
Saint Johns, IL
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is January (5.4 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
Saint Johns, 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 36min).
- Average sunshine in October: 6h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in October
Saint Johns, IL
- Average sunshine days in October: 19.5 days
The months with the most sunshine days are October and November (19.5 days).
The month with the least sunshine days is May (11.4 days).
Average UV index in October
Saint Johns, 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
Saint Johns, IL
- Average cloud cover in October: 33
The months with the most cloud cover are January and February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in October
Saint Johns, 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).
Saint Johns, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location