Rapidan Threshold Days by Year (USC00447033)

6 fixed thresholds counted per year at Rapidan (USC00447033): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rapidan Thresholds

Rapidan: days with 10 mm (0.39 in) or more of precipitation in 33 years, most in 1972 with 48.
Rapidan: days with 25 mm (0.98 in) or more of precipitation in 33 years, most in 1971 with 18.
Rapidan: days with 50 mm (1.97 in) or more of precipitation in 25 years, most in 1971 with 6.
Rapidan: days with 10 cm (3.9 in) or more of snowfall in 25 years, most in 1961 with 6.
6 fixed thresholds have at least one qualifying day at Rapidan.

Days with 10 mm (0.39 in) or more of precipitation

33 years with a qualifying day

Days per year at Rapidan with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 48 in 1972.

Days with 10 mm (0.39 in) or more of precipitation per year at Rapidan
Year	Days	Decade average
1949	42	42
1950	32	33.2
1951	36	33.2
1952	39	33.2
1953	33	33.2
1954	27	33.2
1955	27	33.2
1956	32	33.2
1957	29	33.2
1958	45	33.2
1959	32	33.2
1960	31	33.5
1961	40	33.5
1962	42	33.5
1963	27	33.5
1964	38	33.5
1965	28	33.5
1966	38	33.5
1967	29	33.5
1968	29	33.5
1969	33	33.5
1970	30	38
1971	39	38
1972	48	38
1973	44	38
1974	35	38
1975	43	38
1976	29	38
1977	34	38
1978	34	38
1979	44	38
1980	31	33
1981	35	33

For each year, a bar from the first to the last day at Rapidan meeting 10 mm (0.39 in).

First to last qualifying date each year at Rapidan
Year	First date	Last date
1949	1949-01-05	1949-12-27
1950	1950-01-13	1950-12-11
1951	1951-01-15	1951-12-21
1952	1952-01-05	1952-12-11
1953	1953-01-01	1953-12-14
1954	1954-01-11	1954-12-30
1955	1955-02-02	1955-11-11
1956	1956-01-11	1956-12-23
1957	1957-02-02	1957-12-26
1958	1958-01-14	1958-12-30
1959	1959-01-02	1959-12-29
1960	1960-01-03	1960-12-12
1961	1961-01-01	1961-12-28
1962	1962-01-06	1962-12-30
1963	1963-01-12	1963-12-24
1964	1964-01-01	1964-12-28
1965	1965-01-10	1965-10-08
1966	1966-01-02	1966-12-29
1967	1967-01-28	1967-12-29
1968	1968-01-14	1968-12-23
1969	1969-01-21	1969-12-31
1970	1970-01-18	1970-12-22
1971	1971-01-01	1971-12-07
1972	1972-01-02	1972-12-31
1973	1973-01-04	1973-12-27
1974	1974-01-01	1974-12-16
1975	1975-01-11	1975-12-26
1976	1976-01-01	1976-12-07
1977	1977-01-06	1977-12-21
1978	1978-01-09	1978-11-27
1979	1979-01-02	1979-11-26
1980	1980-01-05	1980-11-28
1981	1981-02-02	1981-12-16

Every Fixed Threshold

Fixed thresholds at Rapidan
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	33	48	1972	35
25 mm (0.98 in): Days with 25 mm or more rain	33	18	1971	5
50 mm (1.97 in): Days with 50 mm or more rain	25	6	1971	2
100 mm (3.94 in): Days with 100 mm or more rain	5	1	1955	1
10 cm (3.9 in): Days with 10 cm or more snowfall	25	6	1961	1
25 cm (9.8 in): Days with 25 cm or more snowfall	9	1	1947	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

Data for Rapidan threshold days by year: CSV or JSON. Field meanings are on the data page.

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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Rapidan Threshold Days by Year (USC00447033)

Key Facts for Rapidan Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

Related