Flagstaff, AZ All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded near Flagstaff (86001), from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 98.9°F (37°C) | July 28, 1898 |
| Record Low | -29.9°F (-34°C) | January 22, 1937 |
| Lowest High | 5°F (-15°C) | January 12, 1963 |
| Highest Low | 71.9°F (22°C) | July 13, 1897 |
| Highest Mean | 80°F (27°C) | July 10, 2021 |
| Lowest Mean | -8.9°F (-23°C) | January 22, 1937 |
| Precipitation | ||
| Max in One Calendar Day | 3.93" (99.8 mm) | February 19, 1993 |
| Max in One Month | 12.20" (309.9 mm) | January 1895 |
| Least in One Month | 0.00" (0.0 mm) | June 1894 |
| Max in One Year | 36.61" (929.9 mm) | 1965 |
| Least in One Year | 9.63" (244.5 mm) | 2020 |
| Snowfall | ||
| Max in One Calendar Day | 35.9" (91.2 cm) | February 21, 2019 |
| Max in One Month | 126.0" (320.1 cm) | January 1895 |
| Max in One Season | 210.1" (533.7 cm) | 1972-73 |
| Max in One Year | 184.4" (468.4 cm) | 1965 |
| Earliest Snow | 2.0" (5.1 cm) | September 19, 1965 |
| Earliest Measurable Snow | 2.0" (5.1 cm) | September 19, 1965 |
| Latest Snow | 2.5" (6.4 cm) | May 29, 1971 |
| Latest Measurable Snow | 2.5" (6.4 cm) | May 29, 1971 |
| Period of Record | ||
| Temperature | November 1, 1893 – February 6, 2025 | |
| Precipitation | January 1, 1893 – February 6, 2025 | |
| Snowfall | January 1, 1893 – February 6, 2025 | |
Note: Records compiled from NOAA GHCN-Daily observations at FLAGSTAFF AP (3 mi from Flagstaff, AZ). 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 Flagstaff, AZ?
The all-time record high in Flagstaff, AZ is 98.9°F (37°C), set on July 28, 1898.
What is the coldest temperature ever recorded in Flagstaff, AZ?
The all-time record low in Flagstaff, AZ is -29.9°F (-34°C), set on January 22, 1937.
What is the most rain Flagstaff, AZ has ever had in one day?
The most precipitation recorded in one calendar day near Flagstaff, AZ is 3.93 inches, on February 19, 1993.
What is the biggest snowfall ever recorded in Flagstaff, AZ?
The most snow recorded in one calendar day near Flagstaff, AZ is 35.9 inches, on February 21, 2019.
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