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
In Duncan, the average high-temperature in October significantly decreases from an agreeable 72.7°F (22.6°C) in September to a moderate 57.7°F (14.3°C). During October, Duncan's temperature falls to a steady low-temperature average of 42.6°F (5.9°C).Humidity
With an average relative humidity of 69%, October is the least humid month.Rainfall
In Duncan, in October, it is raining for 10.7 days, with typically 2.2" (56mm) of accumulated precipitation. In Duncan, during the entire year, the rain falls for 127.1 days and collects up to 24.8" (630mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 1.5 snowfall days, it receives 0.16" (4mm) of snow. In Duncan, during the entire year, snow falls for 51.2 days and aggregates up to 20.91" (531mm) of snow.Daylight
In Duncan, the average length of the day in October is 11h and 1min.On the first day of October, sunrise is at 7:13 am and sunset at 6:55 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 6:07 pm CDT.
Sunshine
In Duncan, the average sunshine in October is 5.4h.UV index
In Duncan, the average daily maximum UV index in October is 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In October, an average UV index of 2 transforms into the following instructions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. When the Sun is at its strongest around midday, find shade and limit exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in October?
What is the least humid month?
What is the average humidity in October?
How much does it rain in October?
When does it start snowing?
What is the average length of the day in October?
When are sunrise and sunset in October?
How long on average sun shines in October?
What is the UV index intensity in October?
Average temperature in October
Duncan, IA
- Average high temperature in October: 57.7°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in October: 42.6°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (10.4°F).
Average pressure in October
Duncan, IA
- Average pressure in October: 29.99"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in October
Duncan, IA
- Average wind speed in October: 10.1mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in October
Duncan, IA
- Average humidity in October: 69%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (69%).
Average rainfall in October
Duncan, IA
- Average rainfall in October: 2.2"
The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in October
Duncan, IA
- Average rainfall days in October: 10.7 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in October
Duncan, IA
- Average snowfall in October: 0.16"
The month with the highest snowfall is February (5.71").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Duncan, IA
- Average snowfall days in October: 1.5 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Duncan, IA
- Average daylight in October: 11h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in October: 5h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in October
Duncan, IA
- Average sunshine days in October: 17.5 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in October
Duncan, 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
Duncan, IA
- Average cloud cover in October: 39
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in October
Duncan, 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).
Duncan, Iowa, USA
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