Portland, OR All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded in Portland, from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 116°F (47°C) | June 28, 2021 |
| Record Low | -2.9°F (-19°C) | February 2, 1950 |
| Lowest High | 14°F (-10°C) | December 30, 1968 |
| Highest Low | 75°F (24°C) | June 28, 2021 |
| Highest Mean | 95.5°F (35°C) | June 28, 2021 |
| Lowest Mean | 7.0°F (-14°C) | January 31, 1950 |
| Precipitation | ||
| Max in One Calendar Day | 2.69" (68.3 mm) | November 19, 1996 |
| Max in One Month | 15.24" (387.2 mm) | December 2015 |
| Least in One Month | 0.00" (0.0 mm) | July 1952 |
| Max in One Year | 63.23" (1606.0 mm) | 1996 |
| Least in One Year | 22.51" (571.7 mm) | 1985 |
| Snowfall | ||
| Max in One Calendar Day | 14.4" (36.6 cm) | January 21, 1943 |
| Max in One Month | 41.5" (105.3 cm) | January 1950 |
| Max in One Season | 44.6" (113.2 cm) | 1949-50 |
| Max in One Year | 44.6" (113.2 cm) | 1950 |
| Earliest Snow | 0.2" (0.5 cm) | October 5, 1950 |
| Earliest Measurable Snow | 0.2" (0.5 cm) | October 5, 1950 |
| Latest Snow | 0.5" (1.3 cm) | May 8, 1953 |
| Latest Measurable Snow | 0.5" (1.3 cm) | May 8, 1953 |
| Period of Record | ||
| Temperature | April 1, 1938 – February 6, 2025 | |
| Precipitation | April 1, 1938 – February 6, 2025 | |
| Snowfall | February 1, 1939 – February 6, 2025 | |
Note: Records compiled from NOAA GHCN-Daily observations at PORTLAND INTL AP (7 mi from Portland, OR). 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 Portland, OR?
The all-time record high in Portland, OR is 116°F (47°C), set on June 28, 2021.
What is the coldest temperature ever recorded in Portland, OR?
The all-time record low in Portland, OR is -2.9°F (-19°C), set on February 2, 1950.
What is the most rain Portland, OR has ever had in one day?
The most precipitation recorded in one calendar day near Portland, OR is 2.69 inches, on November 19, 1996.
What is the biggest snowfall ever recorded in Portland, OR?
The most snow recorded in one calendar day near Portland, OR is 14.4 inches, on January 21, 1943.
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Portland Weather History
Monthly averages, records, and climate data for Portland
Oregon Weather Extremes
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