Richmond Threshold Days by Year (USC00156805)

18 fixed thresholds counted per year at Richmond (USC00156805): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Richmond Thresholds

Richmond: nights with a minimum temperature at or below 0 C (32 F) in 72 years, most in 1960 with 127.
Richmond: nights with a minimum temperature at or above 20 C (68 F) in 72 years, most in 1941 with 81.
Richmond: days with 10 mm (0.39 in) or more of precipitation in 72 years, most in 1950 with 66.
Richmond: days with 25 mm (0.98 in) or more of precipitation in 72 years, most in 1935 with 20.
18 fixed thresholds have at least one qualifying day at Richmond.

Days at or above 30 C (86 F)

71 years with a qualifying day

Days per year at Richmond with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 100 in 1921.

Days at or above 30 C (86 F) per year at Richmond
Year	Days	Decade average
1897	83	84.7
1898	90	84.7
1899	81	84.7
1905	67	66.5
1906	67	66.5
1907	58	66.5
1908	74	66.5
1910	52	69.8
1911	91	69.8
1912	64	69.8
1913	94	69.8
1914	85	69.8
1915	50	69.8
1916	71	69.8
1917	31	69.8
1918	69	69.8
1919	91	69.8
1920	57	73.7
1921	100	73.7
1922	89	73.7
1923	72	73.7
1924	65	73.7
1925	95	73.7
1926	65	73.7
1927	54	73.7
1928	68	73.7
1929	72	73.7
1930	81	67.9
1931	61	67.9
1932	54	67.9
1933	68	67.9
1934	73	67.9
1935	52	67.9
1936	93	67.9
1937	64	67.9
1938	63	67.9
1939	70	67.9
1940	52	57
1941	81	57
1942	36	57
1943	54	57
1947	57	57
1948	55	57
1949	64	57
1950	22	67.1
1951	62	67.1
1952	76	67.1
1953	81	67.1
1954	95	67.1
1955	82	67.1
1956	58	67.1
1957	69	67.1
1958	50	67.1
1959	76	67.1
1960	46	53.6
1961	51	53.6
1962	57	53.6
1963	37	53.6
1964	73	53.6
1965	60	53.6
1966	54	53.6
1967	30	53.6
1968	60	53.6
1969	68	53.6
1970	72	55.1
1971	52	55.1
1972	53	55.1
1973	66	55.1
1974	37	55.1
1975	65	55.1
1976	41	55.1

For each year, a bar from the first to the last day at Richmond meeting 30 C (86 F).

First to last qualifying date each year at Richmond
Year	First date	Last date
1897	1897-04-28	1897-10-16
1898	1898-05-01	1898-10-02
1899	1899-04-29	1899-10-14
1905	1905-05-03	1905-09-29
1906	1906-04-14	1906-09-19
1907	1907-03-22	1907-09-22
1908	1908-04-27	1908-10-06
1910	1910-03-28	1910-10-20
1911	1911-05-11	1911-10-07
1912	1912-05-04	1912-10-12
1913	1913-05-03	1913-10-11
1914	1914-04-29	1914-10-08
1915	1915-04-21	1915-09-21
1916	1916-05-11	1916-10-09
1917	1917-04-19	1917-09-16
1918	1918-05-23	1918-10-06
1919	1919-04-09	1919-10-04
1920	1920-05-23	1920-10-23
1921	1921-04-24	1921-09-29
1922	1922-05-09	1922-10-30
1923	1923-05-19	1923-10-12
1924	1924-05-05	1924-09-12
1925	1925-04-23	1925-09-26
1926	1926-05-01	1926-10-03
1927	1927-05-09	1927-10-29
1928	1928-05-03	1928-10-15
1929	1929-03-24	1929-09-29
1930	1930-04-11	1930-10-12
1931	1931-05-28	1931-09-24
1932	1932-05-07	1932-09-20
1933	1933-05-02	1933-10-01
1934	1934-04-05	1934-09-26
1935	1935-04-27	1935-10-17
1936	1936-05-08	1936-09-22
1937	1937-05-22	1937-10-07
1938	1938-05-03	1938-10-18
1939	1939-05-24	1939-10-10
1940	1940-05-07	1940-09-22
1941	1941-05-20	1941-10-09
1942	1942-04-29	1942-09-14
1943	1943-05-06	1943-09-06
1947	1947-06-05	1947-09-21
1948	1948-05-11	1948-09-21
1949	1949-05-05	1949-10-11
1950	1950-05-05	1950-08-29
1951	1951-05-02	1951-10-06
1952	1952-05-06	1952-10-02
1953	1953-05-23	1953-10-05
1954	1954-06-01	1954-10-06
1955	1955-04-19	1955-09-24
1956	1956-04-28	1956-09-23
1957	1957-04-27	1957-09-21
1958	1958-06-05	1958-09-27
1959	1959-05-03	1959-10-06
1960	1960-04-25	1960-09-09
1961	1961-06-03	1961-09-26
1962	1962-05-01	1962-09-14
1963	1963-05-10	1963-10-12
1964	1964-05-20	1964-09-22
1965	1965-05-16	1965-09-23
1966	1966-05-09	1966-09-04
1967	1967-05-26	1967-09-21
1968	1968-06-06	1968-09-25
1969	1969-05-06	1969-10-14
1970	1970-04-30	1970-09-25
1971	1971-05-25	1971-10-04
1972	1972-05-26	1972-09-24
1973	1973-06-04	1973-10-05
1974	1974-05-12	1974-09-12
1975	1975-05-22	1975-09-11
1976	1976-04-19	1976-09-10

Every Fixed Threshold

Fixed thresholds at Richmond
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	71	100	1921	41
35 C (95 F): Days	52	30	1936	2
40 C (104 F): Days	3	1	1914	1
90 F (32.2 C): Days	71	72	1925	16
100 F (37.8 C): Days	14	14	1936	6
0 C (32 F): Ice days (max	71	38	1963	14
0 C (32 F): Frost days (min	72	127	1960	114
-10 C (14 F): Days with min	71	39	1963	18
-20 C (-4 F): Days with min	29	8	1970	1
-30 C (-22 F): Days with min	1	1	1899	1
20 C (68 F): Tropical nights (min	72	81	1941	13
25 C (77 F): Days with min	9	3	1930	1
10 mm (0.39 in): Days with 10 mm or more rain	72	66	1950	44
25 mm (0.98 in): Days with 25 mm or more rain	72	20	1935	8
50 mm (1.97 in): Days with 50 mm or more rain	60	7	1972	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1932	1
10 cm (3.9 in): Days with 10 cm or more snowfall	12	5	1960	1
25 cm (9.8 in): Days with 25 cm or more snowfall	1	1	1960	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1897.

Download the Data

Data for Richmond 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).

Richmond Threshold Days by Year (USC00156805)

Key Facts for Richmond Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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