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's onset witnesses a marked shift in the average high-temperature, moving from a pleasant 73°F (22.8°C) in September to a mild 58.6°F (14.8°C). During the month of October, Downers Grove's nighttime temperature lowers to an average of 43.2°F (6.2°C).Humidity
The least humid month is October, with an average relative humidity of 74%.Rainfall
In Downers Grove, during October, the rain falls for 11.9 days and regularly aggregates up to 2.52" (64mm) of precipitation. In Downers Grove, during the entire year, the rain falls for 142.5 days and collects up to 28.27" (718mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. October is the first month it typically snows in Downers Grove. Throughout October, in the average 0.6 snowfall days, it receives 0.35" (9mm) of snow. In Downers Grove, during the entire year, snow falls for 43.2 days and aggregates up to 17.17" (436mm) of snow.Daylight
In Downers Grove, the average length of the day in October is 11h and 3min.On the first day of October, sunrise is at 7:02 am and sunset at 6:46 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:59 pm CDT.
Sunshine
In Downers Grove, the average sunshine in October is 5.3h.UV index
The average daily maximum UV index in October is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A daily high UV index of 2 in October leads to these guidelines:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Frequently asked questions
What are the temperatures in Downers Grove in October?
What is the least humid month in Downers Grove?
What is the average humidity in October in Downers Grove?
How many days does it rain in October in Downers Grove?
When does it start to snow in Downers Grove?
What is the average length of the day in October in Downers Grove?
What time are sunrise and sunset in October in Downers Grove?
How long on average sun shines in October in Downers Grove?
How high is the UV index in October in Downers Grove?
Average temperature in October
Downers Grove, IA
- Average high temperature in October: 58.6°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 (25.2°F).
- Average low temperature in October: 43.2°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in October
Downers Grove, IA
- Average pressure in October: 30"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in October
Downers Grove, IA
- Average wind speed in October: 9.5mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in October
Downers Grove, IA
- Average humidity in October: 74%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall in October
Downers Grove, IA
- Average rainfall in October: 2.52"
The wettest month (with the highest rainfall) is May (4.25").
The driest months (with the least rainfall) are January and February (1.26").
Average rainfall days in October
Downers Grove, IA
- Average rainfall days in October: 11.9 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in October
Downers Grove, IA
- Average snowfall in October: 0.35"
The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Downers Grove, IA
- Average snowfall days in October: 0.6 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
Downers Grove, IA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in October: 5h and 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in October
Downers Grove, IA
- Average sunshine days in October: 16.9 days
The month with the most sunshine days is September (17 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in October
Downers Grove, IA
- Average UV index in October: 2
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
Downers Grove, IA
- Average cloud cover in October: 39
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in October
Downers Grove, IA
- Average visibility in October: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Downers Grove, Iowa, USA
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