Grizzly Threshold Days by Year (USC00353542)
17 fixed thresholds counted per year at Grizzly (USC00353542): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Grizzly Thresholds
- Grizzly: days with 10 mm (0.39 in) or more of precipitation in 69 years, most in 1942 with 16.
- Grizzly: days with a maximum temperature at or above 30 C (86 F) in 51 years, most in 2021 with 58.
- Grizzly: days with a maximum temperature at or below 0 C (32 F) in 51 years, most in 1949 with 33.
- Grizzly: nights with a minimum temperature at or below 0 C (32 F) in 51 years, most in 1999 with 216.
- 17 fixed thresholds have at least one qualifying day at Grizzly.
Days at or above 30 C (86 F)
51 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1946 | 19 | 16.5 |
| 1947 | 14 | 16.5 |
| 1948 | 13 | 16.5 |
| 1949 | 20 | 16.5 |
| 1950 | 34 | 23.6 |
| 1951 | 31 | 23.6 |
| 1952 | 25 | 23.6 |
| 1953 | 21 | 23.6 |
| 1954 | 13 | 23.6 |
| 1955 | 26 | 23.6 |
| 1956 | 21 | 23.6 |
| 1957 | 10 | 23.6 |
| 1958 | 34 | 23.6 |
| 1959 | 21 | 23.6 |
| 1960 | 35 | 31.1 |
| 1961 | 48 | 31.1 |
| 1962 | 13 | 31.1 |
| 1963 | 28 | 31.1 |
| 1966 | 16 | 31.1 |
| 1967 | 52 | 31.1 |
| 1968 | 37 | 31.1 |
| 1969 | 20 | 31.1 |
| 1970 | 45 | 30.9 |
| 1971 | 41 | 30.9 |
| 1972 | 24 | 30.9 |
| 1973 | 37 | 30.9 |
| 1974 | 34 | 30.9 |
| 1975 | 17 | 30.9 |
| 1976 | 18 | 30.9 |
| 1988 | 35 | 26 |
| 1989 | 17 | 26 |
| 1995 | 17 | 26.5 |
| 1997 | 19 | 26.5 |
| 1998 | 41 | 26.5 |
| 1999 | 29 | 26.5 |
| 2000 | 29 | 41.7 |
| 2003 | 50 | 41.7 |
| 2006 | 46 | 41.7 |
| 2010 | 25 | 26.1 |
| 2011 | 33 | 26.1 |
| 2012 | 23 | 26.1 |
| 2013 | 19 | 26.1 |
| 2014 | 21 | 26.1 |
| 2018 | 34 | 26.1 |
| 2019 | 28 | 26.1 |
| 2020 | 43 | 48.5 |
| 2021 | 58 | 48.5 |
| 2022 | 53 | 48.5 |
| 2023 | 41 | 48.5 |
| 2024 | 50 | 48.5 |
| 2026 | 46 | 48.5 |
| Year | First date | Last date |
|---|---|---|
| 1946 | 1946-06-20 | 1946-08-24 |
| 1947 | 1947-05-26 | 1947-09-23 |
| 1948 | 1948-06-28 | 1948-09-13 |
| 1949 | 1949-06-06 | 1949-09-01 |
| 1950 | 1950-06-04 | 1950-09-03 |
| 1951 | 1951-06-30 | 1951-09-19 |
| 1952 | 1952-07-03 | 1952-09-25 |
| 1953 | 1953-07-06 | 1953-09-14 |
| 1954 | 1954-05-17 | 1954-08-01 |
| 1955 | 1955-06-11 | 1955-09-06 |
| 1956 | 1956-05-17 | 1956-08-22 |
| 1957 | 1957-06-04 | 1957-09-24 |
| 1958 | 1958-05-21 | 1958-10-03 |
| 1959 | 1959-06-19 | 1959-09-12 |
| 1960 | 1960-06-28 | 1960-10-03 |
| 1961 | 1961-06-14 | 1961-10-16 |
| 1962 | 1962-07-21 | 1962-09-06 |
| 1963 | 1963-06-15 | 1963-09-30 |
| 1966 | 1966-06-16 | 1966-09-22 |
| 1967 | 1967-06-16 | 1967-09-28 |
| 1968 | 1968-06-16 | 1968-09-26 |
| 1969 | 1969-06-03 | 1969-09-11 |
| 1970 | 1970-06-01 | 1970-10-03 |
| 1971 | 1971-07-13 | 1971-10-05 |
| 1972 | 1972-06-29 | 1972-09-05 |
| 1973 | 1973-05-15 | 1973-09-12 |
| 1974 | 1974-06-13 | 1974-09-26 |
| 1975 | 1975-06-01 | 1975-09-06 |
| 1976 | 1976-06-18 | 1976-09-01 |
| 1988 | 1988-05-12 | 1988-09-14 |
| 1989 | 1989-06-03 | 1989-09-24 |
| 1995 | 1995-07-19 | 1995-09-16 |
| 1997 | 1997-05-14 | 1997-09-25 |
| 1998 | 1998-06-30 | 1998-09-16 |
| 1999 | 1999-06-14 | 1999-09-22 |
| 2000 | 2000-06-27 | 2000-09-14 |
| 2003 | 2003-06-06 | 2003-09-27 |
| 2006 | 2006-05-16 | 2006-09-30 |
| 2010 | 2010-07-07 | 2010-09-25 |
| 2011 | 2011-06-23 | 2011-09-30 |
| 2012 | 2012-07-07 | 2012-09-20 |
| 2013 | 2013-06-06 | 2013-09-15 |
| 2014 | 2014-05-15 | 2014-08-27 |
| 2018 | 2018-06-21 | 2018-09-08 |
| 2019 | 2019-05-12 | 2019-09-04 |
| 2020 | 2020-05-29 | 2020-10-06 |
| 2021 | 2021-06-03 | 2021-09-08 |
| 2022 | 2022-06-27 | 2022-10-05 |
| 2023 | 2023-06-29 | 2023-09-16 |
| 2024 | 2024-06-21 | 2024-09-28 |
| 2026 | 2026-06-15 | 2026-09-09 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 51 | 58 | 2021 | 46 |
| 35 C (95 F): Days | 37 | 22 | 2021 | 3 |
| 40 C (104 F): Days | 4 | 4 | 2022 | 4 |
| 90 F (32.2 C): Days | 50 | 40 | 2021 | 17 |
| 100 F (37.8 C): Days | 14 | 8 | 2022 | 4 |
| 110 F (43.3 C): Days | 2 | 1 | 2003 | 1 |
| 0 C (32 F): Ice days (max | 51 | 33 | 1949 | 6 |
| 0 C (32 F): Frost days (min | 51 | 216 | 1999 | 112 |
| -10 C (14 F): Days with min | 51 | 48 | 1949 | 4 |
| -20 C (-4 F): Days with min | 31 | 11 | 1972 | 3 |
| -30 C (-22 F): Days with min | 5 | 2 | 1957 | 1 |
| 20 C (68 F): Tropical nights (min | 3 | 1 | 1949 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 69 | 16 | 1942 | 3 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 39 | 3 | 1950 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 1 | 0 | n/a | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 51 | 8 | 1950 | 3 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 3 | 2 | 1973 | 2 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1946.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-17).