October weather forecast
Arnold, IA

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Weather in October

October, like September, is a moderate autumn month in Arnold, Iowa, with temperature in the range of an average low of 43.5°F (6.4°C) and an average high of 58.1°F (14.5°C).

Temperature

Arnold's October weather is characterized by a distinct downswing in high-temperatures, falling from September's warm 74.1°F (23.4°C) to a mild 58.1°F (14.5°C). Throughout the month of October, Arnold expects an average low of 43.5°F (6.4°C).

Humidity

The least humid month is October, with an average relative humidity of 68%.

Rainfall

In Arnold, during October, the rain falls for 10.8 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, in Arnold, there are 130.6 rainfall days, and 25" (635mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 0.5 snowfall days, it receives 0.12" (3mm) of snow. In Arnold, during the entire year, snow falls for 41.2 days and aggregates up to 18.11" (460mm) of snow.

Daylight

In October, the average length of the day is 11h and 2min.
On the first day of October, sunrise is at 7:14 am and sunset at 6:57 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 6:10 pm CDT.

Sunshine

The average sunshine in October is 5.6h.

UV index

In Arnold, the average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A daily maximum UV index of 3 in October translates into the following instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are October temperatures?

The high-temperature during October is 58.1°F (14.5°C) and the low-temperature is 43.5°F (6.4°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is calculated to be 86°F (30°C).

What is the least humid month?

With an average relative humidity of 68%, October is the least humid month.

What is the average humidity in October?

The average relative humidity in October is 68%.

How many days does it rain in October?

In October, the rain falls for 10.8 days. Throughout October, 2.24" (57mm) of precipitation is accumulated.

When does it start to snow?

October is the first month it typically snows. Throughout October, in the average 0.5 snowfall days, it receives 0.12" (3mm) of snow.

How many hours of daylight does Arnold have in October?

In October, the average day length is 11h and 2min.

What time are sunrise and sunset in October?

In October, on the first day of the month, sunrise is at 7:14 am and sunset at 6:57 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 6:10 pm CDT.

How long on average sun shines in October in Arnold?

In Arnold, the average sunshine duration in October is 5.6h.

What is the UV index intensity in October?

In Arnold, the average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Arnold, IA

Average temperature in October - Arnold, IA
  • Average high temperature in October: 58.1°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in October: 43.5°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).

Average pressure in October
Arnold, IA

Average pressure in October - Arnold, IA
  • Average pressure in October: 30"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
Arnold, IA

Average wind speed in October - Arnold, IA
  • Average wind speed in October: 9.9mph

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).

Average humidity in October
Arnold, IA

Average humidity in October - Arnold, IA
  • Average humidity in October: 68%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (68%).

Average rainfall in October
Arnold, IA

Average rainfall in October - Arnold, IA
  • Average rainfall in October: 2.24"

The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.94").

Average rainfall days in October
Arnold, IA

Average rainfall days in October - Arnold, IA
  • Average rainfall days in October: 10.8 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.7 days).

Average snowfall in October
Arnold, IA

Average snowfall in October - Arnold, IA
  • Average snowfall in October: 0.12"

The month with the highest snowfall is February (5").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in October
Arnold, IA

Average snowfall days in October - Arnold, IA
  • Average snowfall days in October: 0.5 days

The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in October /
Average sunshine in October
Arnold, IA

Average daylight in October / Average sunshine in October - Arnold, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in October
Arnold, IA

Average sunshine days in October - Arnold, IA
  • Average sunshine days in October: 17.8 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is June (10.5 days).

Average UV index in October
Arnold, IA

Average UV index in October - Arnold, IA
  • Average UV index in October: 3

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in October
Arnold, IA

Average cloud cover in October - Arnold, IA
  • Average cloud cover in October: 37

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and September (Cloud cover 30).

Average visibility in October
Arnold, IA

Average visibility in October - Arnold, 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).

Arnold, Iowa, USA

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