NOAA's National Centers for Environmental Information
Existing Records
| Temperature | Record | Date | Location |
|---|---|---|---|
| Maximum | 134°F (56.7°C) | July 10, 1913 | Greenland Ranch, CA |
| Minimum | -80°F (-62.2°C) | January 23, 1971 | Prospect Creek, AK |
| Max 24-hr Change | 103°F (57.2°C) | January 14-15, 1972 | Loma, MT |
| Snow | Record | Date | Location |
| Max 24-hr Snowfall | 75.8 in (1925.3 mm) | April 14-15, 1921 | Silver Lake, CO |
| Max Seasonal Snowfall (July-June) | 1140 in (28,956 mm) | 1998-1999 | Mt. Baker Ski Area, WA |
| Max Snow Depth | 451 in (11,455 mm) | March 11, 1911 | Tamarack, CA |
| Rain | Record | Date | Location |
| Maximum 24-Hour | 49.69 in (1262 mm) | April 14-15, 2018 | Waipā Garden, Kauai, HI |
| Least Annual | 0.00 in (0.00 mm) | 1929 | Death Valley, CA** |
| Maximum Annual | 704.83 in (17,902.7 mm) | 1982 | Kukui, HI |
| Longest Dry Period | 767 days | Oct 3, 1912-Nov 8,1914 | Bagdad, CA |
| Wind | Record | Date | Location |
| Maximum Gust | 231 mph (372 km/hr) | April 12, 1934 | Mt. Washington, NH |
| Hail | Record | Date | Location |
| Largest (diameter) | 8 in (203.2 mm) | July 23, 2010 | Vivian, SD |
| Largest (circumference) | 18.75 in (476.25 mm) | June 22, 2003 | Aurora, NE |
| Heaviest | 1.938 lb (0.879 kg) | July 23, 2010 | Vivian, SD |
| Pressure | Record | Date | Location |
| Lowest | 26.35 in of Hg (892.3 mb) | September 2, 1935 | Matecumbe Key, FL |
| Highest | 31.85 in of Hg (1078.6 mb) | January 31, 1989 | Northway, AK |
**Denotes that record has occurred at an earlier date at other location(s)
Please note: a summer 1995 dewpoint observation of 90 degrees F, recorded in Appleton Wisconsin, although never recognized by the National Climate Extremes Committee, has been widely reported as the extreme dewpoint temperature for the United States. Local National Weather Service officials have determined this observation to be erroneous, and it has been flagged as such in the relevant NOAA archives. To date, there remains no official NOAA value for extreme dewpoint temperature evaluated by the National Climate Extremes Committee.
