Waterloo (IA) Temperatures: Monthly Averages and Year-Round Insights
On this page, we’ll explore Waterloo’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
In Waterloo, temperatures differ significantly between summer and winter months. Typically, maximum daytime temperatures range from a comfortable 29°C in July to a very cold -3°C in the coolest month, January. Nights are cooler, with temperatures generally dropping to -13°C, particularly during the colder months.
The chart below illustrates the average maximum day and minimum night temperatures in Waterloo by month:
The lowest temperatures typically occur between 4 AM and 6 AM, while the peak temperatures are generally observed around 3 PM, coinciding with the sun’s strongest heating effect.
The chart below shows the average temperature throughout the year:
January, the city’s coldest month, receives about 22 mm of rainfall spread over roughly 8 days. For more information, please visit our Waterloo 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
Waterloo Temperatures Compared World Wide
Waterloo’s average annual maximum temperature is 14°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.
In Toronto, Canada, the average annual temperature is 13°C, with snowy winters and warm summers.
In Seoul, South Korea, the average annual temperature is 18°C, featuring distinct seasons.
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.
Global Warming and Its Effects
Climate change is affecting worldwide temperatures, including in Waterloo. It has massive impacts on both local and global levels:
- Global Temperature Rise: The average global land and sea temperatures have risen by about 1.2°C since pre-industrial times.
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Local Impacts: Most regions of the world are witnessing warmer winters with fewer frost and snowfall days. The global frequency and severity of heatwaves have increased. For example, Europe's summers of 2018, 2019, and 2020 all broke records. Summers are also becoming drier; however, during winter, inland regions have experienced increased rainfall. This has caused elevated river levels and more cases of flooding.
Many countries are experiencing earlier springs and later autumns. This is why some bird species have shifted their migration dates.
For more detailed information about Waterloo’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Waterloo climate page.
Current temperature in Waterloo (IA)
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partly cloudy and no rain
4 m/s
overcast and no rain
3 m/s
overcast and chance of slight rain
