Ottumwa, IA Climate


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United States / Iowa / Ottumwa Metro Area / Wapello County / Ottumwa / Zip Codes
Ottumwa, IA is located in the Central Iowa region and has a humid continental climate. Summers are hot and humid in Ottumwa with average temperatures ranging from 70 to 80 degrees Fahrenheit. Winters are cold and snowy with temperatures dropping to an average low of 20 degrees Fahrenheit. Precipitation is fairly evenly distributed throughout the year, averaging around 35 inches per year.

Ottumwa, Iowa gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Ottumwa averages 25 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 200 sunny days per year in Ottumwa. The US average is 205 sunny days.

Ottumwa gets some kind of precipitation, on average, 107 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 85 degrees
Winter Low: the January low is 14
Rain: averages 39 inches of rain a year
Snow: averages 25 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Ottumwa is 7.0 (10=best), which means it is more comfortable than most places in Iowa.

8.6 Summer - 4.9 Winter
June, September and May are the most pleasant months in Ottumwa, while January and December are the least comfortable months.

  ClimateOttumwa, IowaUnited States
  38.7 in.38.1 in.
  24.8 in.27.8 in.
  106.7 days106.2 days
  200 days205 days
  85.2°85.8°
  13.6°21.7°
  77
  3.94.3
  673 ft.2443 ft.
Climate
YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Ottumwa with an average high temperature of 85.2°, which ranks it as warmer than most places in Iowa. In Ottumwa, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Ottumwa are September, June and August.
In Ottumwa, there are 15.8 days annually when the high temperature is over 90°, which is hotter than most places in Iowa.
January has the coldest nighttime temperatures for Ottumwa with an average of 13.6°. This is warmer than most places in Iowa.
In Ottumwa, there are 132.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Iowa.
In Ottumwa, there are 12.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Iowa.
The humidity is usually comfortable in Ottumwa but some summer months can be unpleasant. July is the most humid month, though humidity is low for most of the year. The most humid months in Ottumwa are July, August and June.
June is the wettest month in Ottumwa with 5.0 inches of rain, and the driest month is February with 1.3 inches. The wettest season is Autumn with 37% of yearly precipitation and 11% occurs in Spring, which is the driest season. The annual rainfall of 38.7 inches in Ottumwa means that it is one of the wettest places in Iowa.
May is the rainiest month in Ottumwa with 12.2 days of rain, and January is the driest month with only 6.0 rainy days. There are 106.7 rainy days annually in Ottumwa, which is rainier than most places in Iowa. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 19% chance of a rainy day.
An annual snowfall of 24.8 inches in Ottumwa means that it is less snowy than most places in Iowa. December is the snowiest month in Ottumwa with 6.3 inches of snow, and 6 months of the year have significant snowfall.
Reviews for Ottumwa
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Morgan · Ottumwa, IA
Drug & Theft
Over 11 years ago

Ottumwa has a seemingly high rate of theft-related crimes as well as drug use which I'm sure correlates to the incidences of assault. For a community of 20-30,000, the  More

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amanda · Ottumwa, IA
No Culture.....
Over 15 years ago

ottumwa, Iowa has no diverse culture. It is not very open especially when it comes to branching out to new ideas of others culture...The idea of culture here is the pro  More

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Clint · Barry, IL
Ottumwa - Pros/Cons
Over 16 years ago

Pros: 1. Extremely low cost of living and housing 2. Affordable place to live Cons: 1. High crime rate 2. Very poor school system 3. Economically depressed 4.  More

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