October weather forecast
Ottumwa, IA

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Weather in October

October brings noticeable changes in Ottumwa, with foliage-rich trees turning into vibrant hues of red and orange. The temperature takes a significant dip, with the warmest day not exceeding 61.7°F (16.5°C). As the days shorten and the air turns crisper, the clear October skies often make for spectacular stargazing nights. Similarly, nature walks and pumpkin patches become popular weekend activities. October presents a picturesque scenery, making it a favorite for anyone with an appreciation for the changing seasons.

Temperature

October in Ottumwa brings a decrease in the average high-temperature, falling from September's warm 75.7°F (24.3°C) to an enjoyable 61.7°F (16.5°C). During the month of October, an average low-temperature of 44.8°F (7.1°C) is recorded.

Humidity

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

Rainfall

In October, in Ottumwa, Iowa, the rain falls for 10.9 days. Throughout October, 2.2" (56mm) of precipitation is accumulated. Throughout the year, there are 134.5 rainfall days, and 27.17" (690mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Ottumwa 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 0.63" (16mm) of snow. In Ottumwa, during the entire year, snow falls for 33.5 days and aggregates up to 14.17" (360mm) of snow.

Daylight

In Ottumwa, the average length of the day in October is 11h and 5min.
On the first day of October, sunrise is at 7:07 am and sunset at 6:51 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 6:06 pm CDT.

Sunshine

In October, the average sunshine is 5.6h.

UV index

The average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In October, the maximum UV index of 3 transforms into these recommendations:
Heed the precautions - It is counselled to guard against solar damage. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average October temperature in Ottumwa?

The high-temperature, in October, in Ottumwa, is 61.7°F (16.5°C), while the low-temperature averages to 44.8°F (7.1°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 87.8°F (31°C).

What is the least humid month in Ottumwa?

The least humid month in Ottumwa is October, with an average relative humidity of 72%.

What is the average humidity in October in Ottumwa?

In October, the average relative humidity is 72%.

How much does it rain in Ottumwa in October?

In Ottumwa, in October, it is raining for 10.9 days, with typically 2.2" (56mm) of accumulated precipitation.

When does it start to snow in Ottumwa?

October is the first month it typically snows. Throughout October, in the average 0.5 snowfall days, it receives 0.63" (16mm) of snow.

How many hours of daylight does Ottumwa have in October?

In October, the average day length in Ottumwa, Iowa, is 11h and 5min.

When are sunrise and sunset in October in Ottumwa?

On the first day of October in Ottumwa, sunrise is at 7:07 am and sunset at 6:51 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 6:06 pm CDT.

How many hours of sunshine does Ottumwa have in October?

The average sunshine duration in October is 5.6h.

How high is the UV index in October in Ottumwa?

The average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health 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
Ottumwa, IA

Average temperature in October - Ottumwa, IA
  • Average high temperature in October: 61.7°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in October: 44.8°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

Average pressure in October
Ottumwa, IA

Average pressure in October - Ottumwa, IA
  • Average pressure in October: 30.01"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
Ottumwa, IA

Average wind speed in October - Ottumwa, IA
  • Average wind speed in October: 9.6mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

Average humidity in October
Ottumwa, IA

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

The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).

Average rainfall in October
Ottumwa, IA

Average rainfall in October - Ottumwa, IA
  • Average rainfall in October: 2.2"

The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is January (1.06").

Average rainfall days in October
Ottumwa, IA

Average rainfall days in October - Ottumwa, IA
  • Average rainfall days in October: 10.9 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (5.2 days).

Average snowfall in October
Ottumwa, IA

Average snowfall in October - Ottumwa, IA
  • Average snowfall in October: 0.63"

The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in October
Ottumwa, IA

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

The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in October / Average sunshine in October - Ottumwa, IA
  • Average daylight in October: 11h and 1min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in October: 5h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in October
Ottumwa, IA

Average sunshine days in October - Ottumwa, IA
  • Average sunshine days in October: 18.2 days

The month with the most sunshine days is December (18.9 days).
The month with the least sunshine days is May (11.6 days).

Average UV index in October
Ottumwa, IA

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

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

Average cloud cover in October
Ottumwa, IA

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

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are August and September (Cloud cover 29).

Average visibility in October
Ottumwa, IA

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

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

Ottumwa, Iowa, USA

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