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
The onset of October coincides with a reduction in the average high-temperature, falling from a moderately hot 73.8°F (23.2°C) in September to a mild 60.3°F (15.7°C). In October, Riverdale encounters an average low-temperature of 47.7°F (8.7°C) during the night.Humidity
With an average relative humidity of 72%, October is the least humid month.Rainfall
In Riverdale, in October, during 9 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. Throughout the year, in Riverdale, there are 110.3 rainfall days, and 10.31" (262mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. October is the first month it typically snows in Riverdale. Throughout October, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow. In Riverdale, during the entire year, snow falls for 34.1 days and aggregates up to 4.13" (105mm) of snow.Daylight
In October, the average length of the day in Riverdale, Illinois, is 11h and 4min.On the first day of the month, sunrise is at 6:48 am and sunset at 6:31 pm. On the last day of October, in Riverdale, sunrise is at 7:22 am and sunset at 5:46 pm CDT.
Sunshine
In Riverdale, Illinois, the average sunshine in October is 5.9h.UV index
The average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: In October, a regular UV index of 3 translates into these guidelines:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
What is the temperature in October in Riverdale?
What is the least humid month in Riverdale?
What is the average humidity in October in Riverdale?
How much does it rain in Riverdale in October?
When does it start to snow in Riverdale?
How many hours of daylight does Riverdale have in October?
What time are sunrise and sunset in October in Riverdale?
How long on average sun shines in October in Riverdale?
What is the UV index reading in October in Riverdale?
Average temperature in October
Riverdale, IL
- Average high temperature in October: 60.3°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in October: 47.7°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in October
Riverdale, IL
- Average pressure in October: 30.01"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in October
Riverdale, IL
- Average wind speed in October: 9.8mph
The windiest month (with the highest average wind speed) is January (11mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in October
Riverdale, IL
- Average humidity in October: 72%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in October
Riverdale, IL
- Average rainfall in October: 0.87"
The wettest months (with the highest rainfall) are May and June (1.38").
The driest months (with the least rainfall) are February and December (0.47").
Average rainfall days in October
Riverdale, IL
- Average rainfall days in October: 9 days
The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in October
Riverdale, IL
- Average snowfall in October: 0.04"
The month with the highest snowfall is January (1.1").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Riverdale, IL
- Average snowfall days in October: 0.3 days
The month with the highest number of snowfall days is January (9.3 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
Riverdale, 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 12min).
- Average sunshine in October: 5h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in October
Riverdale, IL
- Average sunshine days in October: 18.1 days
The month with the most sunshine days is December (19.8 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in October
Riverdale, IL
- Average UV index in October: 3
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in October
Riverdale, IL
- Average cloud cover in October: 41
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in October
Riverdale, 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).
Riverdale, Illinois, USA
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