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 clear reduction in the average high-temperature is witnessed in Decorah with the onset of October, reducing from an agreeable 70.7°F (21.5°C) in September to a refreshing 56.3°F (13.5°C). Throughout the month of October, the nighttime temperature in Decorah, Iowa, dips to an average of 41.2°F (5.1°C).Humidity
The least humid month is October, with an average relative humidity of 76%.Rainfall
In Decorah, during October, the rain falls for 11.7 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, there are 149 rainfall days, and 30.59" (777mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 1.8 snowfall days, it receives 0.43" (11mm) of snow. In Decorah, during the entire year, snow falls for 60.9 days and aggregates up to 24.37" (619mm) of snow.Daylight
In October, the average length of the day in Decorah is 11h and 1min.On the first day of the month, sunrise is at 7:05 am and sunset at 6:47 pm. On the last day of October, in Decorah, sunrise is at 7:41 am and sunset at 5:59 pm CDT.
Sunshine
The average sunshine in October is 5.2h.UV index
In October, the average daily maximum UV index in Decorah, Iowa, is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: The UV index of 2 during October leads to these advisories:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. 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 are the temperatures in Decorah in October?
What is the least humid month in Decorah?
What is the average humidity in October in Decorah?
How much does it rain in Decorah in October?
When does it start snowing in Decorah?
How many hours of daylight does Decorah have in October?
What time are sunrise and sunset in October in Decorah?
How long on average sun shines in October in Decorah?
What is the UV index intensity in October in Decorah?
Average temperature in October
Decorah, IA
- Average high temperature in October: 56.3°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in October: 41.2°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in October
Decorah, IA
- Average pressure in October: 29.99"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in October
Decorah, IA
- Average wind speed in October: 9.4mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in October
Decorah, IA
- Average humidity in October: 76%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is October (76%).
Average rainfall in October
Decorah, IA
- Average rainfall in October: 2.6"
The wettest month (with the highest rainfall) is June (5.04").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in October
Decorah, IA
- Average rainfall days in October: 11.7 days
The months with the highest number of rainy days are May and June (20.3 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in October
Decorah, IA
- Average snowfall in October: 0.43"
The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Decorah, IA
- Average snowfall days in October: 1.8 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Decorah, 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 0min).
- Average sunshine in October: 5h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in October
Decorah, IA
- Average sunshine days in October: 15.6 days
The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (7.1 days).
Average UV index in October
Decorah, IA
- Average UV index in October: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in October
Decorah, IA
- Average cloud cover in October: 41
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in October
Decorah, IA
- Average visibility in October: 6mi
The months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, July and December (5mi).
Decorah, Iowa, USA
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