October weather forecast
Marshalltown, IA

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Weather in October

October greets Marshalltown with definitive signs of autumn. A consistent drop in temperatures from the previous months of September marks the beginning of cooler days. The trees adorn varied hues, creating a colorful and beautiful cityscape. The cooler breeze signifies the change from late summer to early autumn. Despite the change, the weather remains pleasant and inviting, making October a favorite amongst locals and tourists for exploring the city.

Temperature

The transition from September to October in Marshalltown brings a clear temperature drop, with average high-temperatures decreasing from a warm 74.5°F (23.6°C) to a moderate 59.4°F (15.2°C). Marshalltown reports an average low-temperature of 43.9°F (6.6°C) during the nights of October.

Humidity

With an average relative humidity of 72%, October is the least humid month.

Rainfall

In Marshalltown, in October, it is raining for 8.7 days, with typically 1.26" (32mm) of accumulated precipitation. Throughout the year, there are 118.2 rainfall days, and 16.18" (411mm) 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 0.6 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, in Marshalltown, Iowa, there are 34.6 snowfall days, and 6.97" (177mm) of snow is accumulated.

Daylight

In October, the average length of the day in Marshalltown is 11h and 4min.
On the first day of October in Marshalltown, sunrise is at 7:09 am and sunset at 6:52 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 6:06 pm CDT.

Sunshine

In October, the average sunshine is 5.5h.

UV index

January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Marshalltown, Iowa. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 2 in October translates into this advice:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Marshalltown in October?

In Marshalltown, 59.4°F (15.2°C) is the average high-temperature and 43.9°F (6.6°C) is the average low-temperature during October. The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in July is estimated at 86°F (30°C).

What is the least humid month in Marshalltown?

With an average relative humidity of 72%, October is the least humid month.

What is the average humidity in October in Marshalltown?

The average relative humidity in October in Marshalltown, Iowa, is 72%.

How much does it rain in Marshalltown in October?

In Marshalltown, Iowa, in October, during 8.7 rainfall days, 1.26" (32mm) of precipitation is typically accumulated.

When does it start snowing in Marshalltown?

October is the first month it typically snows in Marshalltown. Throughout October, in the average 0.6 snowfall days, it receives 0.12" (3mm) of snow.

What is the average length of the day in October in Marshalltown?

The average day length in October is 11h and 4min.

When is the sunrise / sunset in October in Marshalltown?

On the first day of October, sunrise is at 7:09 am and sunset at 6:52 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 6:06 pm CDT.

How long on average sun shines in October in Marshalltown?

In Marshalltown, Iowa, the average sunshine duration in October is 5.5h.

What are the months with the lowest UV index in Marshalltown?

The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2.

What is the UV index intensity in October in Marshalltown?

The average daily maximum UV index in October is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.
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
Marshalltown, IA

Average temperature in October - Marshalltown, IA
  • Average high temperature in October: 59.4°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 (25.7°F).

  • Average low temperature in October: 43.9°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (12.7°F).

Average pressure in October
Marshalltown, IA

Average pressure in October - Marshalltown, 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 (29.89"Hg).

Average wind speed in October
Marshalltown, IA

Average wind speed in October - Marshalltown, IA
  • Average wind speed in October: 9.8mph

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

Average humidity in October
Marshalltown, IA

Average humidity in October - Marshalltown, IA
  • Average humidity in October: 72%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (72%).

Average rainfall in October
Marshalltown, IA

Average rainfall in October - Marshalltown, IA
  • Average rainfall in October: 1.26"

The wettest month (with the highest rainfall) is June (2.56").
The driest month (with the least rainfall) is January (0.43").

Average rainfall days in October
Marshalltown, IA

Average rainfall days in October - Marshalltown, IA
  • Average rainfall days in October: 8.7 days

The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is February (2.8 days).

Average snowfall in October
Marshalltown, IA

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

The month with the highest snowfall is January (1.93").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in October
Marshalltown, IA

Average snowfall days in October - Marshalltown, IA
  • Average snowfall days in October: 0.6 days

The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in October / Average sunshine in October - Marshalltown, 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 3min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in October
Marshalltown, IA

Average sunshine days in October - Marshalltown, IA
  • Average sunshine days in October: 20.5 days

The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is June (12.2 days).

Average UV index in October
Marshalltown, IA

Average UV index in October - Marshalltown, 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
Marshalltown, IA

Average cloud cover in October - Marshalltown, IA
  • Average cloud cover in October: 38

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

Average visibility in October
Marshalltown, IA

Average visibility in October - Marshalltown, IA
  • Average visibility in October: 6mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

Marshalltown, Iowa, USA

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