Sumner (WA) Temperatures: Monthly Averages and Year-Round Insights
On this page, we’ll explore Sumner’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 weather in Sumner experiences significant differences between warm and cold seasons, with big shifts in temperature. Typically, maximum daytime temperatures range from a comfortable 25°C in August to a chilly 8°C in the coolest month, December. Nights are cooler, with temperatures generally dropping to 1°C, particularly during the colder months.
The chart below illustrates the average maximum day and minimum night temperatures in Sumner 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. August, the city’s warmest month, enjoys 277 hours of sunshine.
The chart below shows the average temperature throughout the year:
December, the city’s coldest month, receives about 153 mm of rainfall spread over roughly 21 days. For more information, please visit our Sumner 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
Sumner Temperatures Compared World Wide
Sumner’s average annual maximum temperature is 16°C. Let’s compare this with some popular tourist destinations:
Seville, Spain, stands out with its warm Mediterranean climate and an average annual temperature of 23°C.
Interlaken, Switzerland, the average annual temperature is significantly lower at 8°C, with mild summers and very cold winters.
Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with an average annual temperature of 23°C, featuring hot summers and mild winters.
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.
Temperatures in the Mountains
Although not all regions have mountains, elevated areas exhibit distinct temperature variations.
- Sun Exposure: Sunlit slopes tend to be warmer, while shaded areas remain cooler.
- Altitude Effects: Temperatures drop by approximately 6°C for every 1,000 meters of elevation, creating distinct microclimates.
For more detailed information about Sumner’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Sumner climate page.
Current temperature in Sumner (WA)
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