What is weather typically like in Denver during this month?
The normal high for the first half of September ranges between 80-85 degrees. The second half of the month sees a normal high of between 73-79 degrees.
Warmest September on record
Here is a look at the warmest Septembers on record for Denver, based on average temperature, according to the National Weather Service:
- 2015: 69.4 degrees
- 2019: 69.3 degrees
- 1948: 68.3 degrees
- 1981: 68.2 degrees
- 1931: 68.2 degrees
Coldest September on record
Here is a look at the coldest Septembers on record for Denver, based on average temperature:
- 1912: 54.7 degrees
- 1965: 55.6 degrees
- 1961: 56.3 degrees
- 1971: 57.5 degrees
- 1918: 58.1 degrees
Snowiest September on record
Here is a look at the snowiest Septembers on record:
- 1971: 17.2 inches
- 1936: 16.5 inches
- 1959: 12.9 inches
- 1895: 11.4 inches
- 1985: 8.7 inches
The Pinpoint Weather team said a rare triple-dip La Niña will dominate winter. The average date of the first snowfall in Denver is Oct. 18.
The first measurable snowfall of the 2021 season did not arrive until Dec. 10, which is the latest first snowfall on record.
The average date of the first freeze of the season in Denver is Oct. 7. The earliest first freeze on record was Sept. 8, 1962. The record for the latest first freeze was Nov. 15, 1944.
The first freeze of 2021 happened on Oct. 13.
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