Colo Threshold Days by Year (USC00131710)
18 fixed thresholds counted per year at Colo (USC00131710): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Colo Thresholds
- Colo: days with a maximum temperature at or above 30 C (86 F) in 43 years, most in 1988 with 66.
- Colo: days with a maximum temperature at or below 0 C (32 F) in 43 years, most in 1975 with 88.
- Colo: nights with a minimum temperature at or below 0 C (32 F) in 43 years, most in 1989 with 174.
- Colo: nights with a minimum temperature at or below -10 C (14 F) in 43 years, most in 1978 with 81.
- 18 fixed thresholds have at least one qualifying day at Colo.
Days at or above 30 C (86 F)
43 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1965 | 32 | 34 |
| 1966 | 44 | 34 |
| 1967 | 24 | 34 |
| 1968 | 38 | 34 |
| 1969 | 32 | 34 |
| 1971 | 34 | 32.2 |
| 1972 | 29 | 32.2 |
| 1973 | 22 | 32.2 |
| 1974 | 24 | 32.2 |
| 1975 | 39 | 32.2 |
| 1976 | 29 | 32.2 |
| 1977 | 46 | 32.2 |
| 1978 | 35 | 32.2 |
| 1979 | 32 | 32.2 |
| 1980 | 49 | 35.7 |
| 1981 | 20 | 35.7 |
| 1982 | 13 | 35.7 |
| 1983 | 56 | 35.7 |
| 1984 | 28 | 35.7 |
| 1985 | 30 | 35.7 |
| 1986 | 26 | 35.7 |
| 1987 | 43 | 35.7 |
| 1988 | 66 | 35.7 |
| 1989 | 26 | 35.7 |
| 1990 | 30 | 28.1 |
| 1991 | 44 | 28.1 |
| 1992 | 11 | 28.1 |
| 1993 | 13 | 28.1 |
| 1994 | 27 | 28.1 |
| 1995 | 40 | 28.1 |
| 1996 | 18 | 28.1 |
| 1997 | 32 | 28.1 |
| 1998 | 31 | 28.1 |
| 1999 | 35 | 28.1 |
| 2000 | 30 | 32.7 |
| 2001 | 37 | 32.7 |
| 2002 | 45 | 32.7 |
| 2003 | 30 | 32.7 |
| 2004 | 12 | 32.7 |
| 2005 | 42 | 32.7 |
| 2006 | 37 | 32.7 |
| 2007 | 44 | 32.7 |
| 2008 | 17 | 32.7 |
| Year | First date | Last date |
|---|---|---|
| 1965 | 1965-04-30 | 1965-09-09 |
| 1966 | 1966-05-05 | 1966-09-12 |
| 1967 | 1967-05-18 | 1967-10-02 |
| 1968 | 1968-05-02 | 1968-08-24 |
| 1969 | 1969-05-27 | 1969-08-30 |
| 1971 | 1971-06-04 | 1971-10-02 |
| 1972 | 1972-05-21 | 1972-09-20 |
| 1973 | 1973-06-08 | 1973-09-01 |
| 1974 | 1974-06-15 | 1974-08-27 |
| 1975 | 1975-05-19 | 1975-10-14 |
| 1976 | 1976-05-21 | 1976-10-02 |
| 1977 | 1977-04-28 | 1977-08-28 |
| 1978 | 1978-05-26 | 1978-09-13 |
| 1979 | 1979-05-30 | 1979-09-11 |
| 1980 | 1980-04-22 | 1980-09-21 |
| 1981 | 1981-04-28 | 1981-09-30 |
| 1982 | 1982-06-25 | 1982-08-04 |
| 1983 | 1983-06-10 | 1983-09-10 |
| 1984 | 1984-06-23 | 1984-09-25 |
| 1985 | 1985-04-19 | 1985-09-20 |
| 1986 | 1986-03-30 | 1986-09-27 |
| 1987 | 1987-04-21 | 1987-08-22 |
| 1988 | 1988-05-15 | 1988-09-27 |
| 1989 | 1989-05-30 | 1989-09-01 |
| 1990 | 1990-06-13 | 1990-10-06 |
| 1991 | 1991-04-07 | 1991-09-14 |
| 1992 | 1992-05-01 | 1992-08-10 |
| 1993 | 1993-06-18 | 1993-09-13 |
| 1994 | 1994-04-19 | 1994-09-15 |
| 1995 | 1995-06-17 | 1995-09-14 |
| 1996 | 1996-05-18 | 1996-08-22 |
| 1997 | 1997-05-19 | 1997-10-07 |
| 1998 | 1998-05-18 | 1998-09-27 |
| 1999 | 1999-05-29 | 1999-09-08 |
| 2000 | 2000-05-12 | 2000-10-15 |
| 2001 | 2001-04-27 | 2001-09-04 |
| 2002 | 2002-04-16 | 2002-10-01 |
| 2003 | 2003-04-02 | 2003-10-21 |
| 2004 | 2004-04-17 | 2004-09-02 |
| 2005 | 2005-06-07 | 2005-10-05 |
| 2006 | 2006-04-14 | 2006-10-04 |
| 2007 | 2007-04-30 | 2007-09-22 |
| 2008 | 2008-06-15 | 2008-09-03 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 43 | 66 | 1988 | 17 |
| 35 C (95 F): Days | 29 | 24 | 1988 | 2 |
| 40 C (104 F): Days | 1 | 1 | 1988 | 1 |
| 90 F (32.2 C): Days | 42 | 43 | 1988 | 3 |
| 100 F (37.8 C): Days | 5 | 9 | 1988 | 1 |
| 0 C (32 F): Ice days (max | 43 | 88 | 1975 | 81 |
| 0 C (32 F): Frost days (min | 43 | 174 | 1989 | 161 |
| -10 C (14 F): Days with min | 43 | 81 | 1978 | 72 |
| -20 C (-4 F): Days with min | 43 | 32 | 1977 | 21 |
| -30 C (-22 F): Days with min | 8 | 5 | 1982 | 3 |
| 20 C (68 F): Tropical nights (min | 43 | 35 | 1983 | 12 |
| 25 C (77 F): Days with min | 3 | 1 | 1966 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 43 | 48 | 1993 | 40 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 43 | 19 | 2007 | 15 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 33 | 6 | 1993 | 5 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 8 | 1 | 1975 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 38 | 6 | 2000 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 2 | 1 | 1985 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1965.
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 (2025-12-31).