Riverton Weather Records (USC00447254)

Record envelope, standing records and threshold days for Riverton (USC00447254), Virginia, United States, with 87 years of record.

Key Facts for Riverton

Riverton (USC00447254) is a weather station in Virginia, United States at 38.93 latitude and -78.20 longitude, 171 m (561 ft) above sea level.
The station reports from 1892 to 1978, 87 years of record.
1,024 records set at Riverton still stand.
Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.
Riverton set a daily record precipitation of 29.2 mm (1.1 in) on 9 July 1978.

About the Station

Location: Virginia, United States, 38.93 latitude, -78.20 longitude.
Elevation: 171 m (561 ft).
Period of record: 1892 to 1978, 87 years.
Eligible elements: prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Riverton. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Riverton, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	25.0 C (77.0 F)	-17.8 C (0.0 F)	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	27.8 C (82.0 F)	0.0 C (32.0 F)	n/a	n/a
Jun	35.0 C (95.0 F)	3.3 C (37.9 F)	n/a	n/a
Jul	36.7 C (98.1 F)	10.6 C (51.1 F)	n/a	n/a
Aug	35.6 C (96.1 F)	9.4 C (48.9 F)	n/a	n/a
Sep	32.2 C (90.0 F)	2.2 C (36.0 F)	n/a	n/a
Oct	24.4 C (75.9 F)	-3.9 C (25.0 F)	n/a	n/a
Nov	29.4 C (84.9 F)	-11.7 C (10.9 F)	n/a	n/a
Dec	19.4 C (66.9 F)	-12.2 C (10.0 F)	n/a	n/a

Which Years Hold Standing Records

1,024 standing records

1,024 records at Riverton still stand. 1975 holds the most, with 344.

All-Time Record Progression

3 new records

3 all-time records were set at Riverton between 26 April 1937 and 16 October 1942. Each dot is a new record.

When Riverton set new all-time records
Date	Kind	Detail
1937-04-26	Record daily precipitation	Record daily precipitation 130.0 mm (5.1 in)
1942-10-15	Record daily precipitation	Record daily precipitation 165.6 mm (6.5 in)
1942-10-16	Record daily precipitation	Record daily precipitation 189.5 mm (7.5 in)

Wettest Day of Each Month

Oct: 189.5 mm (7.5 in)

The wettest day on record for each calendar month at Riverton. The most was 189.5 mm (7.5 in) on 16 October 1942.

Record daily precipitation for each month at Riverton
Month	Record daily precipitation (mm)	Date
Jan	63.8 mm (2.5 in)	26 January 1933
Feb	57.9 mm (2.3 in)	22 February 1902
Mar	85.9 mm (3.4 in)	18 March 1936
Apr	130.0 mm (5.1 in)	26 April 1937
May	85.9 mm (3.4 in)	20 May 1894
Jun	110.2 mm (4.3 in)	10 June 1903
Jul	64.3 mm (2.5 in)	13 July 1964
Aug	101.6 mm (4.0 in)	13 August 1955
Sep	96.5 mm (3.8 in)	10 September 1968
Oct	189.5 mm (7.5 in)	16 October 1942
Nov	83.8 mm (3.3 in)	7 November 1963
Dec	66.8 mm (2.6 in)	15 December 1901

Period of Record Coverage

1967 to 1978

7 years of record at Riverton, 1967 to 1978. 7 years have data for under 90 percent of days and are left out of rankings: 1967, 1972, 1974, 1975, 1976, 1977, 1978.

Latest Records

Latest records at Riverton
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 July 1978	Riverton, US	daily rain	29.2 mm (1.1 in)	7.4 mm (0.29 in)	20 years	21 of 100 (Routine)
27 March 1978	Riverton, US	daily rain	43.7 mm (1.7 in)	20.3 mm (0.8 in)	64 years	50 of 100 (Notable)
26 March 1978	Riverton, US	daily rain	27.9 mm (1.1 in)	12.9 mm (0.5 in)	24 years	29 of 100 (Routine)
20 January 1978	Riverton, US	daily rain	37.3 mm (1.5 in)	18.5 mm (0.7 in)	16 years	33 of 100 (Routine)
18 January 1978	Riverton, US	daily snowfall (Tie)	5.1 cm (2.0 in)	tie	67 years	7 of 100 (Routine)
14 January 1978	Riverton, US	monthly snowfall	21.6 cm (8.5 in)	1.3 cm (0.5 in)	73 years	42 of 100 (Notable)
13 January 1978	Riverton, US	daily snowfall (Tie)	5.1 cm (2.0 in)	tie	30 years	4 of 100 (Routine)
9 January 1978	Riverton, US	daily rain	27.9 mm (1.1 in)	14.9 mm (0.6 in)	44 years	37 of 100 (Notable)
19 December 1977	Riverton, US	daily rain	9.7 mm (0.38 in)	2.6 mm (0.10 in)	32 years	19 of 100 (Routine)
18 December 1977	Riverton, US	daily rain	25.4 mm (1.0 in)	2.5 mm (0.10 in)	4 years	11 of 100 (Routine)
23 November 1977	Riverton, US	daily rain	25.7 mm (1.0 in)	2.3 mm (0.09 in)	24 years	16 of 100 (Routine)
11 November 1977	Riverton, US	daily rain	27.9 mm (1.1 in)	10.1 mm (0.4 in)	22 years	22 of 100 (Routine)
8 November 1977	Riverton, US	daily rain	47.2 mm (1.9 in)	23.3 mm (0.9 in)	4 years	28 of 100 (Routine)
6 November 1977	Riverton, US	daily rain	30.5 mm (1.2 in)	6.6 mm (0.26 in)	38 years	24 of 100 (Routine)
27 October 1977	Riverton, US	daily rain	43.7 mm (1.7 in)	21.6 mm (0.9 in)	20 years	25 of 100 (Routine)
12 March 1977	Riverton, US	daily rain	29.0 mm (1.1 in)	2.3 mm (0.09 in)	14 years	14 of 100 (Routine)
10 January 1977	Riverton, US	daily snowfall	5.1 cm (2.0 in)	2.6 cm (1.0 in)	21 years	18 of 100 (Routine)
6 January 1977	Riverton, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	75 years	49 of 100 (Notable)
3 October 1976	Riverton, US	daily rain	20.1 mm (0.8 in)	4.9 mm (0.19 in)	3 years	10 of 100 (Routine)
16 September 1976	Riverton, US	daily rain	53.3 mm (2.1 in)	23.6 mm (0.9 in)	43 years	35 of 100 (Notable)

Extremes by Year

1892 to 1978

Yearly extremes at Riverton: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.7 C (98.1 F)	1978	32.2 C (90.0 F)	7
Coldest night (TNn)	-17.8 C (0.0 F)	1975	0.0 C (32.0 F)	7
Wettest day (Rx1day)	189.5 mm (7.5 in)	1942	56.1 mm (2.2 in)	81
Wettest five days (Rx5day)	427.0 mm (16.8 in)	1942	87.7 mm (3.5 in)	81
Longest dry spell (CDD)	49 days	1922	24 days	81

Hottest day (TXx)

The hottest day of the year at Riverton, 1892 to 1978. The record is 36.7 C (98.1 F) in 1978, marked on the chart; the median year is 32.2 C (90.0 F).

Hottest day (TXx) at Riverton by year
Year	Hottest day (TXx)
1892	n/a
1893	n/a
1894	n/a
1901	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	32.2 C (90.0 F)
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	27.8 C (82.0 F)
1973	n/a
1974	29.4 C (84.9 F)
1975	35.6 C (96.1 F)
1976	24.4 C (75.9 F)
1977	35.0 C (95.0 F)
1978	36.7 C (98.1 F)

Coldest night (TNn)

The coldest night of the year at Riverton, 1892 to 1978. The record is -17.8 C (0.0 F) in 1975, marked on the chart; the median year is 0.0 C (32.0 F).

Coldest night (TNn) at Riverton by year
Year	Coldest night (TNn)
1892	n/a
1893	n/a
1894	n/a
1901	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	2.2 C (36.0 F)
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	0.0 C (32.0 F)
1973	n/a
1974	-10.0 C (14.0 F)
1975	-17.8 C (0.0 F)
1976	-11.7 C (10.9 F)
1977	3.3 C (37.9 F)
1978	10.6 C (51.1 F)

Wettest day (Rx1day)

The wettest day of the year at Riverton, 1892 to 1978. The record is 189.5 mm (7.5 in) in 1942, marked on the chart; the median year is 56.1 mm (2.2 in).

Wettest day (Rx1day) at Riverton by year
Year	Wettest day (Rx1day)
1892	42.7 mm (1.7 in)
1893	91.4 mm (3.6 in)
1894	85.9 mm (3.4 in)
1901	72.4 mm (2.9 in)
1902	57.9 mm (2.3 in)
1903	110.2 mm (4.3 in)
1904	61.0 mm (2.4 in)
1905	41.9 mm (1.6 in)
1906	76.2 mm (3.0 in)
1907	43.7 mm (1.7 in)
1908	68.6 mm (2.7 in)
1909	45.0 mm (1.8 in)
1910	41.1 mm (1.6 in)
1911	88.9 mm (3.5 in)
1912	50.8 mm (2.0 in)
1913	50.5 mm (2.0 in)
1914	52.1 mm (2.1 in)
1915	44.7 mm (1.8 in)
1916	24.6 mm (1.0 in)
1917	47.0 mm (1.9 in)
1918	56.9 mm (2.2 in)
1919	40.6 mm (1.6 in)
1920	40.6 mm (1.6 in)
1921	38.1 mm (1.5 in)
1922	24.9 mm (1.0 in)
1923	24.9 mm (1.0 in)
1924	55.6 mm (2.2 in)
1925	42.9 mm (1.7 in)
1926	53.8 mm (2.1 in)
1927	50.8 mm (2.0 in)
1928	43.2 mm (1.7 in)
1929	57.2 mm (2.3 in)
1930	42.4 mm (1.7 in)
1931	51.6 mm (2.0 in)
1932	61.0 mm (2.4 in)
1933	82.3 mm (3.2 in)
1934	56.1 mm (2.2 in)
1935	69.1 mm (2.7 in)
1936	85.9 mm (3.4 in)
1937	130.0 mm (5.1 in)
1938	56.1 mm (2.2 in)
1939	50.5 mm (2.0 in)
1940	37.8 mm (1.5 in)
1941	73.4 mm (2.9 in)
1942	189.5 mm (7.5 in)
1943	43.2 mm (1.7 in)
1944	69.6 mm (2.7 in)
1945	96.3 mm (3.8 in)
1946	51.1 mm (2.0 in)
1947	57.2 mm (2.3 in)
1948	81.8 mm (3.2 in)
1949	44.2 mm (1.7 in)
1950	64.0 mm (2.5 in)
1951	43.2 mm (1.7 in)
1952	72.1 mm (2.8 in)
1953	66.5 mm (2.6 in)
1954	111.8 mm (4.4 in)
1955	101.6 mm (4.0 in)
1956	52.3 mm (2.1 in)
1957	78.0 mm (3.1 in)
1958	40.1 mm (1.6 in)
1959	44.5 mm (1.8 in)
1960	52.8 mm (2.1 in)
1961	43.7 mm (1.7 in)
1962	69.1 mm (2.7 in)
1963	83.8 mm (3.3 in)
1964	64.3 mm (2.5 in)
1965	51.8 mm (2.0 in)
1966	62.5 mm (2.5 in)
1967	70.4 mm (2.8 in)
1968	96.5 mm (3.8 in)
1969	53.3 mm (2.1 in)
1970	74.4 mm (2.9 in)
1971	41.1 mm (1.6 in)
1972	88.9 mm (3.5 in)
1973	101.6 mm (4.0 in)
1974	85.1 mm (3.4 in)
1975	96.5 mm (3.8 in)
1976	53.3 mm (2.1 in)
1977	47.2 mm (1.9 in)
1978	43.7 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Riverton, 1892 to 1978. The record is 427.0 mm (16.8 in) in 1942, marked on the chart; the median year is 87.7 mm (3.5 in).

Wettest five days (Rx5day) at Riverton by year
Year	Wettest five days (Rx5day)
1892	47.8 mm (1.9 in)
1893	161.6 mm (6.4 in)
1894	124.0 mm (4.9 in)
1901	80.3 mm (3.2 in)
1902	106.9 mm (4.2 in)
1903	186.5 mm (7.3 in)
1904	87.7 mm (3.5 in)
1905	86.4 mm (3.4 in)
1906	186.7 mm (7.4 in)
1907	58.9 mm (2.3 in)
1908	73.4 mm (2.9 in)
1909	64.7 mm (2.5 in)
1910	87.6 mm (3.4 in)
1911	114.8 mm (4.5 in)
1912	104.6 mm (4.1 in)
1913	57.6 mm (2.3 in)
1914	59.0 mm (2.3 in)
1915	63.6 mm (2.5 in)
1916	58.7 mm (2.3 in)
1917	48.3 mm (1.9 in)
1918	125.0 mm (4.9 in)
1919	98.8 mm (3.9 in)
1920	63.5 mm (2.5 in)
1921	97.1 mm (3.8 in)
1922	41.4 mm (1.6 in)
1923	49.3 mm (1.9 in)
1924	163.6 mm (6.4 in)
1925	42.9 mm (1.7 in)
1926	99.2 mm (3.9 in)
1927	66.8 mm (2.6 in)
1928	67.8 mm (2.7 in)
1929	93.2 mm (3.7 in)
1930	44.4 mm (1.7 in)
1931	63.0 mm (2.5 in)
1932	95.5 mm (3.8 in)
1933	99.6 mm (3.9 in)
1934	83.5 mm (3.3 in)
1935	126.8 mm (5.0 in)
1936	133.4 mm (5.3 in)
1937	171.2 mm (6.7 in)
1938	46.2 mm (1.8 in)
1939	67.0 mm (2.6 in)
1940	57.9 mm (2.3 in)
1941	94.5 mm (3.7 in)
1942	427.0 mm (16.8 in)
1943	59.2 mm (2.3 in)
1944	69.6 mm (2.7 in)
1945	132.9 mm (5.2 in)
1946	77.7 mm (3.1 in)
1947	67.8 mm (2.7 in)
1948	100.3 mm (3.9 in)
1949	61.9 mm (2.4 in)
1950	90.7 mm (3.6 in)
1951	54.7 mm (2.2 in)
1952	124.3 mm (4.9 in)
1953	66.5 mm (2.6 in)
1954	118.9 mm (4.7 in)
1955	118.6 mm (4.7 in)
1956	127.2 mm (5.0 in)
1957	88.9 mm (3.5 in)
1958	68.6 mm (2.7 in)
1959	81.2 mm (3.2 in)
1960	110.2 mm (4.3 in)
1961	85.1 mm (3.4 in)
1962	87.7 mm (3.5 in)
1963	101.6 mm (4.0 in)
1964	71.2 mm (2.8 in)
1965	66.5 mm (2.6 in)
1966	123.2 mm (4.9 in)
1967	75.4 mm (3.0 in)
1968	104.4 mm (4.1 in)
1969	118.8 mm (4.7 in)
1970	155.0 mm (6.1 in)
1971	74.1 mm (2.9 in)
1972	148.5 mm (5.8 in)
1973	104.1 mm (4.1 in)
1974	89.1 mm (3.5 in)
1975	166.6 mm (6.6 in)
1976	83.1 mm (3.3 in)
1977	150.1 mm (5.9 in)
1978	74.1 mm (2.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Riverton, 1892 to 1978. The record is 49 days in 1922, marked on the chart; the median year is 24 days.

Longest dry spell (CDD) at Riverton by year
Year	Longest dry spell (CDD)
1892	11 days
1893	24 days
1894	21 days
1901	40 days
1902	21 days
1903	39 days
1904	22 days
1905	18 days
1906	23 days
1907	19 days
1908	31 days
1909	21 days
1910	36 days
1911	30 days
1912	32 days
1913	25 days
1914	29 days
1915	31 days
1916	25 days
1917	30 days
1918	21 days
1919	22 days
1920	33 days
1921	41 days
1922	49 days
1923	31 days
1924	33 days
1925	22 days
1926	33 days
1927	27 days
1928	28 days
1929	35 days
1930	41 days
1931	32 days
1932	22 days
1933	40 days
1934	19 days
1935	15 days
1936	26 days
1937	18 days
1938	15 days
1939	22 days
1940	16 days
1941	28 days
1942	17 days
1943	21 days
1944	19 days
1945	17 days
1946	24 days
1947	19 days
1948	12 days
1949	18 days
1950	27 days
1951	22 days
1952	29 days
1953	35 days
1954	14 days
1955	19 days
1956	17 days
1957	35 days
1958	23 days
1959	13 days
1960	19 days
1961	14 days
1962	23 days
1963	33 days
1964	29 days
1965	18 days
1966	28 days
1967	23 days
1968	29 days
1969	24 days
1970	19 days
1971	25 days
1972	12 days
1973	19 days
1974	30 days
1975	25 days
1976	33 days
1977	25 days
1978	13 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

56 years, 1893 to 1977

A day with at least 57.4 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 143.3 mm (5.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Riverton: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	57.4 mm (2.3 in)
5 years	78.2 mm (3.1 in)
10 years	92.8 mm (3.7 in)
25 years	112.3 mm (4.4 in)
50 years	127.5 mm (5.0 in)
100 years	143.3 mm (5.6 in)	Longer than the 56 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 56 years of values from 1893 to 1977.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 130.0 mm (5.1 in) in 1937; 111.8 mm (4.4 in) in 1954; 110.2 mm (4.3 in) in 1903.

Download the Data

Data for Riverton standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Riverton 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).