Ottumwa (IA) Temperatures: Monthly Averages and Year-Round Insights
On this page, we’ll explore Ottumwa’s temperature statistics in detail, including day and night variations and monthly averages. We’ll also compare the annual temperature to other cities in the United States of America.
Monthly Temperature Averages
The climate in Ottumwa is dynamic, ranging widely from very cold in winter to comfortable in summer. Average maximum daytime temperatures range from a comfortable 30°C in July, the warmest time of the year, to a very cold 0°C during cooler months like January. At night, minimum temperatures typically average around -10°C during these months.
The chart below illustrates the average maximum day and minimum night temperatures in Ottumwa by month:
The coldest temperatures are usually recorded between 4 AM and 6 AM, while the hottest temperatures occur near 3 PM, at the peak of the sun's warmth.
The chart below shows the average temperature throughout the year:
January, the city’s coldest month, receives about 24 mm of rainfall spread over roughly 8 days. For more information, please visit our Ottumwa Precipitation page.
Annual Temperatures in the United States of America Compared
The map below shows the annual temperature across the United States of America. You can also select the different months in case you are interested in a specific month.
very warm
warm
pleasant
moderate
cold
very cold
Ottumwa Temperatures Compared World Wide
Ottumwa’s average annual maximum temperature is 16°C. Let’s compare this with some popular tourist destinations:
In Lisbon, Portugal, the average annual temperature is 21°C, offering warm summers and mild, rainy winters.
Glasgow, Scotland, the average annual temperature is significantly lower at 13°C, with mild summers and cold winters.
Osaka, Japan, offers a similar climate to Tokyo, with an average annual temperature of 22°C.
In Brisbane, Australia, the average annual temperature is 26°C, making it warmer than Sydney.
How are these Temperatures Measured?
Generally, temperature data depicting climate is usually given over a 30-year average in order to reduce short-term fluctuations and reveal better long-term trends in climate conditions.
This temperature data is taken from land-based thermometers, ocean buoys, ships, and satellites. These measurements are transmitted to weather stations and climate centers around the globe where they are processed, averaged, and analyzed in order to monitor the trends and create climate models.
Sea vs. Land Temperatures
The influence of nearby oceans or large water bodies significantly affects local temperatures:
- Ocean Influence: Coastal regions tend to have more stable temperatures, as large bodies of water absorb and release heat slowly. This often results in milder winters and cooler summers compared to inland areas.
- Continental Climates: Landmasses well away from large bodies of water tend to show greater extremes in temperature, having hotter summers and colder winters because of the absence of water as a moderating influence.
For more detailed information about Ottumwa’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Ottumwa climate page.
Current temperature in Ottumwa (IA)
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