Wateree Dam Weather Records (USC00388979)

Record envelope, standing records and threshold days for Wateree Dam (USC00388979), South Carolina, United States, with 134 years of record.

Key Facts for Wateree Dam

Wateree Dam (USC00388979) is a weather station in South Carolina, United States at 34.33 latitude and -80.70 longitude, 70 m (230 ft) above sea level.
The station reports from 1893 to 2026, 134 years of record.
1,464 records set at Wateree Dam still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Wateree Dam set a daily record precipitation of 37.1 mm (1.5 in) on 2 August 2026.

About the Station

Location: South Carolina, United States, 34.33 latitude, -80.70 longitude.
Elevation: 70 m (230 ft).
Period of record: 1893 to 2026, 134 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

55 days at or beyond a record

The band shows the record high and record low for each calendar day at Wateree Dam. The lines show the 2026 daily maximum and minimum. 55 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Wateree Dam, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	26.1 C (79.0 F)	-18.3 C (-0.9 F)	17.8 C (64.0 F)	-18.3 C (-0.9 F)
Feb	27.8 C (82.0 F)	-12.8 C (9.0 F)	n/a	n/a
Mar	31.7 C (89.1 F)	-5.0 C (23.0 F)	31.7 C (89.1 F)	3.9 C (39.0 F)
Apr	34.4 C (93.9 F)	-1.7 C (28.9 F)	33.9 C (93.0 F)	5.6 C (42.1 F)
May	37.8 C (100.0 F)	3.9 C (39.0 F)	35.6 C (96.1 F)	6.1 C (43.0 F)
Jun	40.6 C (105.1 F)	10.6 C (51.1 F)	38.9 C (102.0 F)	10.6 C (51.1 F)
Jul	40.6 C (105.1 F)	15.0 C (59.0 F)	n/a	n/a
Aug	40.0 C (104.0 F)	13.3 C (55.9 F)	n/a	n/a
Sep	38.3 C (100.9 F)	7.2 C (45.0 F)	40.0 C (104.0 F)	8.9 C (48.0 F)
Oct	38.9 C (102.0 F)	-0.6 C (30.9 F)	33.9 C (93.0 F)	11.7 C (53.1 F)
Nov	30.0 C (86.0 F)	-6.7 C (19.9 F)	n/a	n/a
Dec	26.1 C (79.0 F)	-10.6 C (12.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Wateree Dam still stand. 2011 holds the most, with 131.

Standing records at Wateree Dam by the year they were set
Year set	Standing records
1970	22
1975	4
1978	10
1980	12
2011	131
2012	121
2013	109
2014	92
2015	123
2016	88
2017	111
2018	100
2019	108
2020	126
2021	81
2022	77
2023	83
2024	9
2026	57

All-Time Record Progression

1 new records

1 all-time records were set at Wateree Dam between 10 October 1990 and 10 October 1990. Each dot is a new record.

Wettest Day of Each Month

Oct: 148.8 mm (5.9 in)

The wettest day on record for each calendar month at Wateree Dam. The most was 148.8 mm (5.9 in) on 10 October 1990.

Record daily precipitation for each month at Wateree Dam
Month	Record daily precipitation (mm)	Date
Jan	62.0 mm (2.4 in)	10 January 1968
Feb	87.1 mm (3.4 in)	24 February 1979
Mar	82.3 mm (3.2 in)	17 March 1983
Apr	97.8 mm (3.9 in)	25 April 1937
May	109.5 mm (4.3 in)	26 May 1996
Jun	117.3 mm (4.6 in)	25 June 1999
Jul	101.6 mm (4.0 in)	27 July 1991
Aug	127.0 mm (5.0 in)	28 August 1893
Sep	127.8 mm (5.0 in)	6 September 1928
Oct	148.8 mm (5.9 in)	10 October 1990
Nov	86.6 mm (3.4 in)	12 November 1992
Dec	75.4 mm (3.0 in)	22 December 1994

Period of Record Coverage

1970 to 2026

19 years of record at Wateree Dam, 1970 to 2026. 6 years have data for under 90 percent of days and are left out of rankings: 1970, 1975, 1978, 1980, 2024, 2026.

Days with data per year at Wateree Dam
Year	Days with data	Share of year	Complete
1970	30	8%	No
1975	24	7%	No
1978	31	8%	No
1980	30	8%	No
2011	355	97%	Yes
2012	360	98%	Yes
2013	357	98%	Yes
2014	338	93%	Yes
2015	347	95%	Yes
2016	350	96%	Yes
2017	355	97%	Yes
2018	360	99%	Yes
2019	362	99%	Yes
2020	354	97%	Yes
2021	365	100%	Yes
2022	365	100%	Yes
2023	364	100%	Yes
2024	43	12%	No
2026	172	47%	No

Latest Records

Latest records at Wateree Dam
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
2 August 2026	Wateree Dam, US	daily rain	37.1 mm (1.5 in)	11.7 mm (0.5 in)	132 years	47 of 100 (Notable)
28 October 2025	Wateree Dam, US	daily rain	40.6 mm (1.6 in)	8.1 mm (0.32 in)	84 years	39 of 100 (Notable)
5 August 2025	Wateree Dam, US	daily rain	66.3 mm (2.6 in)	13.7 mm (0.5 in)	51 years	33 of 100 (Routine)
12 May 2025	Wateree Dam, US	daily rain	64.0 mm (2.5 in)	21.8 mm (0.9 in)	51 years	43 of 100 (Notable)
5 May 2025	Wateree Dam, US	daily rain	35.8 mm (1.4 in)	9.9 mm (0.39 in)	36 years	28 of 100 (Routine)
7 November 2024	Wateree Dam, US	daily rain	33.5 mm (1.3 in)	11.4 mm (0.4 in)	92 years	45 of 100 (Notable)
7 May 2024	Wateree Dam, US	daily rain	50.8 mm (2.0 in)	11.9 mm (0.5 in)	82 years	43 of 100 (Notable)
8 April 2024	Wateree Dam, US	daily rain	41.7 mm (1.6 in)	3.1 mm (0.12 in)	86 years	37 of 100 (Notable)
26 January 2023	Wateree Dam, US	daily rain	26.2 mm (1.0 in)	4.9 mm (0.19 in)	89 years	40 of 100 (Notable)
4 January 2022	Wateree Dam, US	daily rain	37.6 mm (1.5 in)	1.3 mm (0.05 in)	78 years	34 of 100 (Routine)
10 July 2021	Wateree Dam, US	daily rain	21.8 mm (0.9 in)	2.2 mm (0.09 in)	40 years	20 of 100 (Routine)
7 August 2020	Wateree Dam, US	daily rain	47.2 mm (1.9 in)	0.2 mm (0.01 in)	22 years	16 of 100 (Routine)
4 August 2020	Wateree Dam, US	daily rain (Tie)	36.3 mm (1.4 in)	tie	17 years	3 of 100 (Routine)
17 December 2019	Wateree Dam, US	daily rain	66.5 mm (2.6 in)	30.4 mm (1.2 in)	12 years	39 of 100 (Notable)
27 October 2018	Wateree Dam, US	daily rain	35.8 mm (1.4 in)	5.1 mm (0.20 in)	31 years	21 of 100 (Routine)
12 October 2018	Wateree Dam, US	daily rain	60.5 mm (2.4 in)	47.3 mm (1.9 in)	7 years	37 of 100 (Notable)
29 May 2018	Wateree Dam, US	daily rain	34.3 mm (1.4 in)	6.4 mm (0.25 in)	84 years	40 of 100 (Notable)
29 January 2018	Wateree Dam, US	daily rain	32.5 mm (1.3 in)	1.5 mm (0.06 in)	80 years	35 of 100 (Notable)
24 October 2017	Wateree Dam, US	daily rain	17.8 mm (0.7 in)	1.3 mm (0.05 in)	79 years	20 of 100 (Routine)
12 September 2017	Wateree Dam, US	daily rain	33.0 mm (1.3 in)	8.9 mm (0.35 in)	52 years	30 of 100 (Routine)

Climate Trend

12 complete years, 2011 to 2023

One stripe for each of 12 complete years at Wateree Dam, 2011 to 2023. Blue stripes are years cooler than the station's own mean of 17.8 C (64.0 F); red stripes are warmer. The coolest year was 2013, at 16.8 C (62.2 F), and the warmest was 2019, at 18.3 C (64.9 F). The strongest colour marks a difference of 1.1 C (2.0 F).

Annual mean temperature at Wateree Dam as warming stripes, 2011 to 2023
Year	Annual mean temperature	Difference from the station mean
2011	17.5 C	-0.28 C
2012	18.1 C	+0.33 C
2013	16.8 C	-1.03 C
2015	17.9 C	+0.12 C
2016	18.1 C	+0.27 C
2017	18.0 C	+0.22 C
2018	17.7 C	-0.05 C
2019	18.3 C	+0.46 C
2020	18.1 C	+0.35 C
2021	17.7 C	-0.09 C
2022	17.5 C	-0.31 C
2023	17.8 C	+0.01 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1893 to 2026

Yearly extremes at Wateree Dam: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.6 C (105.1 F)	2011	37.8 C (100.0 F)	19
Coldest night (TNn)	-18.3 C (-0.9 F)	2026	-7.2 C (19.0 F)	19
Wettest day (Rx1day)	148.8 mm (5.9 in)	1990	61.8 mm (2.4 in)	104
Wettest five days (Rx5day)	228.1 mm (9.0 in)	1945	95.2 mm (3.7 in)	98
Longest dry spell (CDD)	47 days	1943	20 days	104

Hottest day (TXx)

The hottest day of the year at Wateree Dam, 1893 to 2026. The record is 40.6 C (105.1 F) in 2011, marked on the chart; the median year is 37.8 C (100.0 F).

Hottest day (TXx) at Wateree Dam by year
Year	Hottest day (TXx)
1893	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	n/a
1968	n/a
1969	n/a
1970	37.8 C (100.0 F)
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	20.0 C (68.0 F)
1976	n/a
1977	n/a
1978	27.8 C (82.0 F)
1979	n/a
1980	30.6 C (87.1 F)
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	40.6 C (105.1 F)
2012	40.6 C (105.1 F)
2013	36.1 C (97.0 F)
2014	37.2 C (99.0 F)
2015	39.4 C (102.9 F)
2016	37.8 C (100.0 F)
2017	37.2 C (99.0 F)
2018	38.3 C (100.9 F)
2019	38.9 C (102.0 F)
2020	36.7 C (98.1 F)
2021	37.2 C (99.0 F)
2022	37.8 C (100.0 F)
2023	37.8 C (100.0 F)
2024	25.0 C (77.0 F)
2025	n/a
2026	40.0 C (104.0 F)

Coldest night (TNn)

The coldest night of the year at Wateree Dam, 1893 to 2026. The record is -18.3 C (-0.9 F) in 2026, marked on the chart; the median year is -7.2 C (19.0 F).

Coldest night (TNn) at Wateree Dam by year
Year	Coldest night (TNn)
1893	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	n/a
1968	n/a
1969	n/a
1970	21.1 C (70.0 F)
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	-5.0 C (23.0 F)
1976	n/a
1977	n/a
1978	0.0 C (32.0 F)
1979	n/a
1980	11.1 C (52.0 F)
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	-10.0 C (14.0 F)
2012	-8.3 C (17.1 F)
2013	-6.1 C (21.0 F)
2014	-12.2 C (10.0 F)
2015	-12.8 C (9.0 F)
2016	-8.3 C (17.1 F)
2017	-7.2 C (19.0 F)
2018	-11.7 C (10.9 F)
2019	-5.6 C (21.9 F)
2020	-5.6 C (21.9 F)
2021	-5.0 C (23.0 F)
2022	-10.6 C (12.9 F)
2023	-5.0 C (23.0 F)
2024	-7.8 C (18.0 F)
2025	n/a
2026	-18.3 C (-0.9 F)

Wettest day (Rx1day)

The wettest day of the year at Wateree Dam, 1893 to 2026. The record is 148.8 mm (5.9 in) in 1990, marked on the chart; the median year is 61.8 mm (2.4 in).

Wettest day (Rx1day) at Wateree Dam by year
Year	Wettest day (Rx1day)
1893	127.0 mm (5.0 in)
1924	62.0 mm (2.4 in)
1925	52.3 mm (2.1 in)
1926	59.2 mm (2.3 in)
1927	76.2 mm (3.0 in)
1928	127.8 mm (5.0 in)
1929	104.4 mm (4.1 in)
1930	35.6 mm (1.4 in)
1931	46.2 mm (1.8 in)
1932	89.7 mm (3.5 in)
1933	47.8 mm (1.9 in)
1934	73.2 mm (2.9 in)
1935	93.0 mm (3.7 in)
1936	73.2 mm (2.9 in)
1937	97.8 mm (3.9 in)
1938	52.8 mm (2.1 in)
1939	86.4 mm (3.4 in)
1940	55.1 mm (2.2 in)
1941	56.6 mm (2.2 in)
1942	94.2 mm (3.7 in)
1943	78.5 mm (3.1 in)
1944	94.0 mm (3.7 in)
1945	95.3 mm (3.8 in)
1946	91.2 mm (3.6 in)
1947	53.1 mm (2.1 in)
1948	91.4 mm (3.6 in)
1949	78.7 mm (3.1 in)
1950	36.1 mm (1.4 in)
1951	50.5 mm (2.0 in)
1952	98.8 mm (3.9 in)
1953	55.1 mm (2.2 in)
1954	47.0 mm (1.9 in)
1955	77.0 mm (3.0 in)
1956	35.3 mm (1.4 in)
1957	84.6 mm (3.3 in)
1958	50.3 mm (2.0 in)
1959	75.7 mm (3.0 in)
1960	65.8 mm (2.6 in)
1961	51.6 mm (2.0 in)
1962	61.0 mm (2.4 in)
1963	59.4 mm (2.3 in)
1964	82.8 mm (3.3 in)
1965	84.1 mm (3.3 in)
1966	50.5 mm (2.0 in)
1967	96.5 mm (3.8 in)
1968	62.0 mm (2.4 in)
1969	78.7 mm (3.1 in)
1970	54.6 mm (2.1 in)
1971	63.5 mm (2.5 in)
1972	33.5 mm (1.3 in)
1973	51.8 mm (2.0 in)
1974	52.6 mm (2.1 in)
1975	59.2 mm (2.3 in)
1976	85.9 mm (3.4 in)
1977	59.4 mm (2.3 in)
1978	61.5 mm (2.4 in)
1979	87.1 mm (3.4 in)
1980	50.5 mm (2.0 in)
1981	47.5 mm (1.9 in)
1982	52.6 mm (2.1 in)
1983	82.3 mm (3.2 in)
1984	61.2 mm (2.4 in)
1985	65.3 mm (2.6 in)
1986	53.8 mm (2.1 in)
1987	48.3 mm (1.9 in)
1988	59.7 mm (2.4 in)
1989	66.0 mm (2.6 in)
1990	148.8 mm (5.9 in)
1991	101.6 mm (4.0 in)
1992	86.6 mm (3.4 in)
1993	57.7 mm (2.3 in)
1994	75.4 mm (3.0 in)
1995	113.5 mm (4.5 in)
1996	109.5 mm (4.3 in)
1997	79.0 mm (3.1 in)
1998	109.2 mm (4.3 in)
1999	117.3 mm (4.6 in)
2000	47.8 mm (1.9 in)
2001	35.1 mm (1.4 in)
2002	51.3 mm (2.0 in)
2003	70.6 mm (2.8 in)
2004	63.5 mm (2.5 in)
2005	52.6 mm (2.1 in)
2006	76.2 mm (3.0 in)
2007	52.3 mm (2.1 in)
2008	51.6 mm (2.0 in)
2009	51.6 mm (2.0 in)
2010	53.3 mm (2.1 in)
2011	41.9 mm (1.6 in)
2012	48.3 mm (1.9 in)
2013	49.8 mm (2.0 in)
2014	68.6 mm (2.7 in)
2015	146.1 mm (5.8 in)
2016	89.4 mm (3.5 in)
2017	87.6 mm (3.4 in)
2018	60.5 mm (2.4 in)
2019	66.5 mm (2.6 in)
2020	55.6 mm (2.2 in)
2021	61.0 mm (2.4 in)
2022	42.7 mm (1.7 in)
2023	33.8 mm (1.3 in)
2024	60.2 mm (2.4 in)
2025	66.3 mm (2.6 in)
2026	37.1 mm (1.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Wateree Dam, 1893 to 2026. The record is 228.1 mm (9.0 in) in 1945, marked on the chart; the median year is 95.2 mm (3.7 in).

Wettest five days (Rx5day) at Wateree Dam by year
Year	Wettest five days (Rx5day)
1893	214.6 mm (8.4 in)
1924	94.3 mm (3.7 in)
1925	144.5 mm (5.7 in)
1926	n/a
1927	108.2 mm (4.3 in)
1928	n/a
1929	62.9 mm (2.5 in)
1930	66.9 mm (2.6 in)
1931	81.9 mm (3.2 in)
1932	20.1 mm (0.8 in)
1933	77.8 mm (3.1 in)
1934	n/a
1935	n/a
1936	46.8 mm (1.8 in)
1937	64.6 mm (2.5 in)
1938	n/a
1939	n/a
1940	116.8 mm (4.6 in)
1941	111.2 mm (4.4 in)
1942	106.4 mm (4.2 in)
1943	92.5 mm (3.6 in)
1944	133.4 mm (5.3 in)
1945	228.1 mm (9.0 in)
1946	108.2 mm (4.3 in)
1947	84.3 mm (3.3 in)
1948	140.5 mm (5.5 in)
1949	176.7 mm (7.0 in)
1950	115.1 mm (4.5 in)
1951	81.3 mm (3.2 in)
1952	145.3 mm (5.7 in)
1953	74.9 mm (2.9 in)
1954	68.8 mm (2.7 in)
1955	88.2 mm (3.5 in)
1956	65.3 mm (2.6 in)
1957	133.6 mm (5.3 in)
1958	80.7 mm (3.2 in)
1959	136.1 mm (5.4 in)
1960	85.1 mm (3.4 in)
1961	71.3 mm (2.8 in)
1962	74.2 mm (2.9 in)
1963	116.3 mm (4.6 in)
1964	145.0 mm (5.7 in)
1965	107.4 mm (4.2 in)
1966	78.0 mm (3.1 in)
1967	170.5 mm (6.7 in)
1968	100.2 mm (3.9 in)
1969	136.8 mm (5.4 in)
1970	82.0 mm (3.2 in)
1971	101.5 mm (4.0 in)
1972	89.4 mm (3.5 in)
1973	107.2 mm (4.2 in)
1974	111.5 mm (4.4 in)
1975	129.8 mm (5.1 in)
1976	176.8 mm (7.0 in)
1977	77.9 mm (3.1 in)
1978	80.6 mm (3.2 in)
1979	127.8 mm (5.0 in)
1980	129.3 mm (5.1 in)
1981	82.6 mm (3.3 in)
1982	113.8 mm (4.5 in)
1983	107.7 mm (4.2 in)
1984	96.5 mm (3.8 in)
1985	82.3 mm (3.2 in)
1986	104.6 mm (4.1 in)
1987	105.9 mm (4.2 in)
1988	71.1 mm (2.8 in)
1989	107.0 mm (4.2 in)
1990	199.7 mm (7.9 in)
1991	178.8 mm (7.0 in)
1992	96.1 mm (3.8 in)
1993	92.7 mm (3.6 in)
1994	121.4 mm (4.8 in)
1995	145.6 mm (5.7 in)
1996	134.9 mm (5.3 in)
1997	145.5 mm (5.7 in)
1998	139.7 mm (5.5 in)
1999	174.7 mm (6.9 in)
2000	76.7 mm (3.0 in)
2001	54.7 mm (2.2 in)
2002	63.3 mm (2.5 in)
2003	120.6 mm (4.7 in)
2004	64.8 mm (2.6 in)
2005	68.3 mm (2.7 in)
2006	113.5 mm (4.5 in)
2007	62.2 mm (2.4 in)
2008	62.5 mm (2.5 in)
2009	38.1 mm (1.5 in)
2010	54.8 mm (2.2 in)
2011	62.8 mm (2.5 in)
2012	80.9 mm (3.2 in)
2013	73.1 mm (2.9 in)
2014	74.9 mm (2.9 in)
2015	219.1 mm (8.6 in)
2016	89.4 mm (3.5 in)
2017	102.1 mm (4.0 in)
2018	70.0 mm (2.8 in)
2019	36.6 mm (1.4 in)
2020	83.5 mm (3.3 in)
2021	99.8 mm (3.9 in)
2022	39.4 mm (1.6 in)
2023	52.0 mm (2.0 in)
2024	62.0 mm (2.4 in)
2025	106.5 mm (4.2 in)
2026	73.2 mm (2.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Wateree Dam, 1893 to 2026. The record is 47 days in 1943, marked on the chart; the median year is 20 days.

Longest dry spell (CDD) at Wateree Dam by year
Year	Longest dry spell (CDD)
1893	22 days
1924	7 days
1925	1 day
1926	1 day
1927	1 day
1928	1 day
1929	1 day
1930	2 days
1931	1 day
1932	1 day
1933	1 day
1934	1 day
1935	1 day
1936	1 day
1937	1 day
1938	1 day
1939	1 day
1940	15 days
1941	30 days
1942	25 days
1943	47 days
1944	21 days
1945	26 days
1946	15 days
1947	30 days
1948	19 days
1949	12 days
1950	19 days
1951	23 days
1952	32 days
1953	20 days
1954	38 days
1955	28 days
1956	24 days
1957	19 days
1958	24 days
1959	18 days
1960	17 days
1961	28 days
1962	32 days
1963	20 days
1964	34 days
1965	20 days
1966	22 days
1967	24 days
1968	26 days
1969	23 days
1970	21 days
1971	17 days
1972	18 days
1973	25 days
1974	43 days
1975	20 days
1976	19 days
1977	19 days
1978	36 days
1979	15 days
1980	32 days
1981	22 days
1982	19 days
1983	19 days
1984	41 days
1985	22 days
1986	18 days
1987	26 days
1988	32 days
1989	20 days
1990	20 days
1991	26 days
1992	18 days
1993	21 days
1994	16 days
1995	28 days
1996	25 days
1997	23 days
1998	24 days
1999	38 days
2000	41 days
2001	39 days
2002	18 days
2003	20 days
2004	18 days
2005	26 days
2006	19 days
2007	18 days
2008	24 days
2009	7 days
2010	26 days
2011	16 days
2012	20 days
2013	30 days
2014	23 days
2015	20 days
2016	34 days
2017	16 days
2018	15 days
2019	18 days
2020	6 days
2021	18 days
2022	17 days
2023	21 days
2024	12 days
2025	20 days
2026	10 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

69 years, 1893 to 2015

A day with at least 66.3 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 159.7 mm (6.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Wateree Dam: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	66.3 mm (2.6 in)
5 years	88.6 mm (3.5 in)
10 years	104.4 mm (4.1 in)
25 years	125.6 mm (4.9 in)
50 years	142.3 mm (5.6 in)
100 years	159.7 mm (6.3 in)	Longer than the 69 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, 69 years of values from 1893 to 2015.

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: 148.8 mm (5.9 in) in 1990; 146.1 mm (5.8 in) in 2015; 127.0 mm (5.0 in) in 1893.

Download the Data

Data for Wateree Dam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Wateree Dam 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).