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
Witnessing a clear downswing, the average high-temperature during October drops from September's warm 74.3°F (23.5°C) to a moderate 58.1°F (14.5°C). Throughout October, Rock Valley encounters an average temperature drop to a wintry 41.9°F (5.5°C).Humidity
With an average relative humidity of 67%, October is the least humid month in Rock Valley.Rainfall
In Rock Valley, Iowa, in October, during 10.5 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. Throughout the year, there are 130 rainfall days, and 24.09" (612mm) of precipitation is accumulated.Snowfall
Months with snowfall in Rock Valley are January through May, October through December. October is the first month it typically snows in Rock Valley, Iowa. Throughout October, in the average 1.5 snowfall days, it receives 0.43" (11mm) of snow. In Rock Valley, during the entire year, snow falls for 49.2 days and aggregates up to 19.41" (493mm) of snow.Daylight
The average length of the day in October is 11h and 1min.On the first day of the month, sunrise is at 7:23 am and sunset at 7:05 pm. On the last day of October, in Rock Valley, sunrise is at 7:59 am and sunset at 6:17 pm CDT.
Sunshine
In Rock Valley, the average sunshine in October is 6.1h.UV index
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 2 in October leads to these guidelines:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in October in Rock Valley?
What is the least humid month in Rock Valley?
What is the average humidity in October in Rock Valley?
How many days does it rain in October in Rock Valley?
When does it start snowing in Rock Valley?
How many hours of daylight does Rock Valley have in October?
When are sunrise and sunset in October in Rock Valley?
How many hours of sunshine does Rock Valley have in October?
When is the lowest UV index in Rock Valley?
How high is the UV index in October in Rock Valley?
Average temperature in October
Rock Valley, IA
- Average high temperature in October: 58.1°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (24.1°F).
- Average low temperature in October: 41.9°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in October
Rock Valley, IA
- Average pressure in October: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in October
Rock Valley, IA
- Average wind speed in October: 10.3mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in October
Rock Valley, IA
- Average humidity in October: 67%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (67%).
Average rainfall in October
Rock Valley, IA
- Average rainfall in October: 2.13"
The wettest month (with the highest rainfall) is June (3.78").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in October
Rock Valley, IA
- Average rainfall days in October: 10.5 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in October
Rock Valley, IA
- Average snowfall in October: 0.43"
The month with the highest snowfall is February (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Rock Valley, IA
- Average snowfall days in October: 1.5 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Rock Valley, 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: 6h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in October
Rock Valley, IA
- Average sunshine days in October: 17.9 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in October
Rock Valley, 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, February, October, November and December (UV index 2).
Average cloud cover in October
Rock Valley, IA
- Average cloud cover in October: 34
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in October
Rock Valley, IA
- Average visibility in October: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Rock Valley, Iowa, USA
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