Hottest Septembers in Washington since 1895
In 2022, the continental United States experienced its , according to data from the National Oceanic and Atmospheric Administration, while 20 states saw one of their in the same month. The year prior, July marked the .
Climate change is driving rising temperatures and more record heat. The has climbed each decade since 1880 by about .14 degrees Fahrenheit, or roughly 2 degrees Fahrenheit total.
compiled a ranking of the hottest Septembers in Washington since 1895 using data from the . Rankings are based on the highest average temperature in each month. For each of the hottest months listed below, we've included the average state temperature, state-wide highs and lows for the month, and the total precipitation.
#10. September 2011
- Average temperature: 61掳F
- Monthly high temperature: 74.5掳F
- Monthly low temperature: 47.6掳F
- Total precipitation: 1.29"
#8. September 2020 (tie)
- Average temperature: 61.2掳F
- Monthly high temperature: 73.3掳F
- Monthly low temperature: 49.1掳F
- Total precipitation: 2.42"
#8. September 1994 (tie)
- Average temperature: 61.2掳F
- Monthly high temperature: 74.4掳F
- Monthly low temperature: 48掳F
- Total precipitation: 1.37"
#7. September 1963
- Average temperature: 61.6掳F
- Monthly high temperature: 74.6掳F
- Monthly low temperature: 48.6掳F
- Total precipitation: 1.45"
#6. September 2022
- Average temperature: 61.7掳F
- Monthly high temperature: 74.7掳F
- Monthly low temperature: 48.6掳F
- Total precipitation: 0.42"
#5. September 2024
- Average temperature: 61.8掳F
- Monthly high temperature: 74.1掳F
- Monthly low temperature: 49.5掳F
- Total precipitation: 0.99"
#4. September 1938
- Average temperature: 62掳F
- Monthly high temperature: 75.8掳F
- Monthly low temperature: 48.2掳F
- Total precipitation: 0.96"
#2. September 1998 (tie)
- Average temperature: 62.2掳F
- Monthly high temperature: 76掳F
- Monthly low temperature: 48.4掳F
- Total precipitation: 0.66"
#2. September 1990 (tie)
- Average temperature: 62.2掳F
- Monthly high temperature: 75.9掳F
- Monthly low temperature: 48.5掳F
- Total precipitation: 0.21"
#1. September 1967
- Average temperature: 62.3掳F
- Monthly high temperature: 76.8掳F
- Monthly low temperature: 47.8掳F
- Total precipitation: 1.21"
