Seattle, WA All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded in Seattle, from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 107.9°F (42°C) | June 28, 2021 |
| Record Low | 6.9°F (-14°C) | February 4, 1989 |
| Lowest High | 17.9°F (-8°C) | February 2, 1989 |
| Highest Low | 73°F (23°C) | June 27, 2021 |
| Highest Mean | 88.5°F (31°C) | June 27, 2021 |
| Lowest Mean | 14.4°F (-10°C) | February 2, 1989 |
| Precipitation | ||
| Max in One Calendar Day | 5.02" (127.5 mm) | October 20, 2003 |
| Max in One Month | 15.64" (397.3 mm) | November 2006 |
| Least in One Month | 0.00" (0.0 mm) | September 1991 |
| Max in One Year | 50.68" (1287.2 mm) | 1996 |
| Least in One Year | 25.15" (638.8 mm) | 1985 |
| Snowfall | ||
| Max in One Calendar Day | 8.9" (22.6 cm) | February 13, 2021 |
| Max in One Month | 20.2" (51.3 cm) | February 2019 |
| Max in One Season | 29.3" (74.4 cm) | 1971-72 |
| Max in One Year | 25.9" (65.7 cm) | 1971 |
| Earliest Snow | 2.0" (5.1 cm) | October 27, 1971 |
| Earliest Measurable Snow | 2.0" (5.1 cm) | October 27, 1971 |
| Latest Snow | 1.2" (3.0 cm) | April 17, 1972 |
| Latest Measurable Snow | 1.2" (3.0 cm) | April 17, 1972 |
| Period of Record | ||
| Temperature | January 1, 1970 – August 1, 2026 | |
| Precipitation | January 1, 1970 – August 1, 2026 | |
| Snowfall | January 1, 1970 – August 1, 2026 | |
Note: Records compiled from NOAA GHCN-Daily observations at SEATTLE TACOMA AP (12 mi from Seattle, WA). 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 Seattle, WA?
The all-time record high in Seattle, WA is 107.9°F (42°C), set on June 28, 2021.
What is the coldest temperature ever recorded in Seattle, WA?
The all-time record low in Seattle, WA is 6.9°F (-14°C), set on February 4, 1989.
What is the most rain Seattle, WA has ever had in one day?
The most precipitation recorded in one calendar day near Seattle, WA is 5.02 inches, on October 20, 2003.
What is the biggest snowfall ever recorded in Seattle, WA?
The most snow recorded in one calendar day near Seattle, WA is 8.9 inches, on February 13, 2021.
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