NOAA's National Centers for Environmental Information
Regional Rankings
Northwest
December 1999 Average Temperature Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Coolest/Warmest Since | Record |
|---|---|---|---|---|---|---|
| December 1999 1-Month | 31.6°F (-0.2°C) | 28.8°F (-1.8°C) | 2.8°F | 103rd Coolest | Coolest since: | 1990 |
| 28th Warmest | Warmest since: | 1917 | ||||
| Ties: 1940, 1941 | ||||||
| Nov– 2-Month | 36.4°F (2.4°C) | 32.1°F (0.1°C) | 4.3°F | 127th Coolest | Coolest since: | 1985 |
| 4th Warmest | Warmest since: | 1917 | ||||
| Oct– 3-Month | 40.2°F (4.6°C) | 36.9°F (2.7°C) | 3.3°F | 128th Coolest | Coolest since: | 1985 |
| 3rd Warmest | Warmest since: | 1917 | ||||
| Sep– 4-Month | 44.3°F (6.8°C) | 41.8°F (5.4°C) | 2.5°F | 123rd Coolest | Coolest since: | 1985 |
| 8th Warmest | Warmest since: | 1917 | ||||
| Aug– 5-Month | 48.5°F (9.2°C) | 46.1°F (7.8°C) | 2.4°F | 124th Coolest | Coolest since: | 1985 |
| 7th Warmest | Warmest since: | 2024 | ||||
| Jul– 6-Month | 51.0°F (10.6°C) | 49.2°F (9.6°C) | 1.8°F | 113th Coolest | Coolest since: | 1985 |
| 18th Warmest | Warmest since: | 2024 | ||||
| Ties: 1933, 1953 | ||||||
| Jun– 7-Month | 51.7°F (10.9°C) | 50.4°F (10.2°C) | 1.3°F | 107th Coolest | Coolest since: | 1916 |
| 24th Warmest | Warmest since: | 2024 | ||||
| May– 8-Month | 51.2°F (10.7°C) | 50.4°F (10.2°C) | 0.8°F | 95th Coolest | Coolest since: | 1916 |
| 36th Warmest | Warmest since: | 2023 | ||||
| Ties: 1904, 1963, 1994 | ||||||
| Apr– 9-Month | 50.1°F (10.1°C) | 49.6°F (9.8°C) | 0.5°F | 79th Coolest | Coolest since: | 1916 |
| 52nd Warmest | Warmest since: | 2021 | ||||
| Ties: 1941, 1973, 1981, 1986, 1995 | ||||||
| Mar– 10-Month | 48.7°F (9.3°C) | 48.3°F (9.1°C) | 0.4°F | 79th Coolest | Coolest since: | 1916 |
| 52nd Warmest | Warmest since: | 2015 | ||||
| Feb– 11-Month | 47.2°F (8.4°C) | 46.7°F (8.2°C) | 0.5°F | 79th Coolest | Coolest since: | 1955 |
| 52nd Warmest | Warmest since: | 2015 | ||||
| Ties: 1910, 1953 | ||||||
| Jan– 12-Month | 45.9°F (7.7°C) | 45.1°F (7.3°C) | 0.8°F | 90th Coolest | Coolest since: | 1916 |
| 41st Warmest | Warmest since: | 2015 | ||||
| Jul 1998– 18-Month | 47.7°F (8.7°C) | 46.5°F (8.1°C) | 1.2°F | 110th Coolest | Coolest since: | 1985 |
| 20th Warmest | Warmest since: | 2015 | ||||
| Jan 1998– 24-Month | 46.4°F (8.0°C) | 45.1°F (7.3°C) | 1.3°F | 105th Coolest | Coolest since: | 1917 |
| 25th Warmest | Warmest since: | 2015 | ||||
| Jan 1997– 36-Month | 46.3°F (7.9°C) | 45.1°F (7.3°C) | 1.2°F | 109th Coolest | Coolest since: | 1913 |
| 20th Warmest | Warmest since: | 2016 | ||||
| Jan 1996– 48-Month | 46.1°F (7.8°C) | 45.1°F (7.3°C) | 1.0°F | 101st Coolest | Coolest since: | 1913, 1914 |
| 27th Warmest | Warmest since: | 2016, 2017 | ||||
| Jan 1995– 60-Month | 46.2°F (7.9°C) | 45.0°F (7.2°C) | 1.2°F | 106th Coolest | Coolest since: | 1913 |
| 21st Warmest | Warmest since: | 2018 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published March 2025, retrieved on March 26, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings
