Fort Collins, CO All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded in Fort Collins, from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 102.9°F (39°C) | July 21, 2005 |
| Record Low | -41°F (-41°C) | February 1, 1951 |
| Lowest High | -9.9°F (-23°C) | February 4, 1989 |
| Highest Low | 75.9°F (24°C) | July 31, 2006 |
| Highest Mean | 84.5°F (29°C) | July 10, 2025 |
| Lowest Mean | -20.9°F (-29°C) | December 9, 1919 |
| Precipitation | ||
| Max in One Calendar Day | 4.63" (117.6 mm) | July 29, 1997 |
| Max in One Month | 10.55" (268.0 mm) | April 1900 |
| Least in One Month | 0.00" (0.0 mm) | November 1904 |
| Max in One Year | 28.19" (716.0 mm) | 1961 |
| Least in One Year | 7.36" (186.9 mm) | 1966 |
| Snowfall | ||
| Max in One Calendar Day | 21.1" (53.6 cm) | November 20, 1979 |
| Max in One Month | 39.6" (100.7 cm) | March 1988 |
| Max in One Season | 114.1" (289.8 cm) | 1979-80 |
| Max in One Year | 105.8" (268.7 cm) | 1979 |
| Earliest Snow | 2.3" (5.8 cm) | September 8, 2020 |
| Earliest Measurable Snow | 2.3" (5.8 cm) | September 8, 2020 |
| Latest Snow | 0.5" (1.3 cm) | June 12, 1947 |
| Latest Measurable Snow | 0.5" (1.3 cm) | June 12, 1947 |
| Period of Record | ||
| Temperature | January 1, 1893 – August 2, 2026 | |
| Precipitation | January 1, 1893 – August 2, 2026 | |
| Snowfall | January 1, 1893 – August 2, 2026 | |
Note: Records compiled from NOAA GHCN-Daily observations at FT COLLINS (1 mi from Fort Collins, CO). Quality-flagged readings are excluded. Monthly and annual totals require substantially complete reporting for “least” records.
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Frequently Asked Questions
What is the hottest temperature ever recorded in Fort Collins, CO?
The all-time record high in Fort Collins, CO is 102.9°F (39°C), set on July 21, 2005.
What is the coldest temperature ever recorded in Fort Collins, CO?
The all-time record low in Fort Collins, CO is -41°F (-41°C), set on February 1, 1951.
What is the most rain Fort Collins, CO has ever had in one day?
The most precipitation recorded in one calendar day near Fort Collins, CO is 4.63 inches, on July 29, 1997.
What is the biggest snowfall ever recorded in Fort Collins, CO?
The most snow recorded in one calendar day near Fort Collins, CO is 21.1 inches, on November 20, 1979.
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