Ashburn 3 ENE Threshold Days by Year (USC00090406)
13 fixed thresholds counted per year at Ashburn 3 ENE (USC00090406): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Ashburn 3 ENE Thresholds
- Ashburn 3 ENE: days with a maximum temperature at or above 30 C (86 F) in 36 years, most in 1986 with 152.
- Ashburn 3 ENE: days with a maximum temperature at or above 90 F (32.2 C) in 36 years, most in 1959 with 111.
- Ashburn 3 ENE: days with a maximum temperature at or above 35 C (95 F) in 34 years, most in 1986 with 42.
- Ashburn 3 ENE: nights with a minimum temperature at or below 0 C (32 F) in 33 years, most in 1968 with 63.
- 13 fixed thresholds have at least one qualifying day at Ashburn 3 ENE.
Days at or above 30 C (86 F)
36 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1958 | 140 | 144 |
| 1959 | 148 | 144 |
| 1960 | 140 | 120.3 |
| 1962 | 145 | 120.3 |
| 1965 | 124 | 120.3 |
| 1966 | 102 | 120.3 |
| 1967 | 112 | 120.3 |
| 1968 | 122 | 120.3 |
| 1969 | 97 | 120.3 |
| 1970 | 126 | 111.4 |
| 1971 | 124 | 111.4 |
| 1972 | 111 | 111.4 |
| 1974 | 107 | 111.4 |
| 1975 | 102 | 111.4 |
| 1976 | 90 | 111.4 |
| 1977 | 126 | 111.4 |
| 1978 | 128 | 111.4 |
| 1979 | 89 | 111.4 |
| 1980 | 111 | 126 |
| 1983 | 117 | 126 |
| 1984 | 122 | 126 |
| 1985 | 135 | 126 |
| 1986 | 152 | 126 |
| 1987 | 133 | 126 |
| 1988 | 114 | 126 |
| 1989 | 124 | 126 |
| 1991 | 108 | 111.3 |
| 1992 | 96 | 111.3 |
| 1993 | 121 | 111.3 |
| 1996 | 115 | 111.3 |
| 1997 | 97 | 111.3 |
| 1998 | 124 | 111.3 |
| 1999 | 118 | 111.3 |
| 2000 | 114 | 120.7 |
| 2001 | 116 | 120.7 |
| 2002 | 132 | 120.7 |
| Year | First date | Last date |
|---|---|---|
| 1958 | 1958-04-23 | 1958-11-16 |
| 1959 | 1959-04-07 | 1959-11-05 |
| 1960 | 1960-04-14 | 1960-10-17 |
| 1962 | 1962-04-28 | 1962-10-17 |
| 1965 | 1965-04-07 | 1965-10-03 |
| 1966 | 1966-04-14 | 1966-10-06 |
| 1967 | 1967-03-13 | 1967-10-08 |
| 1968 | 1968-04-10 | 1968-10-05 |
| 1969 | 1969-04-06 | 1969-10-05 |
| 1970 | 1970-04-20 | 1970-10-16 |
| 1971 | 1971-04-19 | 1971-10-09 |
| 1972 | 1972-04-14 | 1972-10-19 |
| 1974 | 1974-03-11 | 1974-09-30 |
| 1975 | 1975-04-27 | 1975-10-15 |
| 1976 | 1976-04-20 | 1976-09-29 |
| 1977 | 1977-02-27 | 1977-10-10 |
| 1978 | 1978-04-06 | 1978-10-06 |
| 1979 | 1979-04-12 | 1979-10-03 |
| 1980 | 1980-04-24 | 1980-10-20 |
| 1983 | 1983-05-14 | 1983-10-06 |
| 1984 | 1984-04-22 | 1984-10-31 |
| 1985 | 1985-04-22 | 1985-10-21 |
| 1986 | 1986-03-15 | 1986-11-09 |
| 1987 | 1987-04-22 | 1987-09-30 |
| 1988 | 1988-05-16 | 1988-10-04 |
| 1989 | 1989-03-31 | 1989-10-18 |
| 1991 | 1991-04-28 | 1991-09-24 |
| 1992 | 1992-04-24 | 1992-09-24 |
| 1993 | 1993-05-06 | 1993-10-09 |
| 1996 | 1996-04-19 | 1996-10-29 |
| 1997 | 1997-05-18 | 1997-10-13 |
| 1998 | 1998-05-09 | 1998-10-08 |
| 1999 | 1999-04-06 | 1999-10-03 |
| 2000 | 2000-04-21 | 2000-10-06 |
| 2001 | 2001-04-11 | 2001-09-22 |
| 2002 | 2002-04-19 | 2002-10-08 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 36 | 152 | 1986 | 132 |
| 35 C (95 F): Days | 34 | 42 | 1986 | 12 |
| 90 F (32.2 C): Days | 36 | 111 | 1959 | 75 |
| 100 F (37.8 C): Days | 8 | 7 | 1986 | 5 |
| 0 C (32 F): Ice days (max | 13 | 2 | 1968 | 1 |
| 0 C (32 F): Frost days (min | 33 | 63 | 1968 | 35 |
| -10 C (14 F): Days with min | 6 | 2 | 1966 | 1 |
| 20 C (68 F): Tropical nights (min | 33 | 117 | 1998 | 96 |
| 25 C (77 F): Days with min | 8 | 3 | 1987 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 33 | 48 | 1959 | 39 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 33 | 25 | 1987 | 21 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 32 | 8 | 1998 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 8 | 1 | 1966 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.
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).