Wanship Dam Weather Records (USC00429165)

Record envelope, standing records and threshold days for Wanship Dam (USC00429165), Utah, United States, with 72 years of record.

Key Facts for Wanship Dam

Wanship Dam (USC00429165) is a weather station in Utah, United States at 40.79 latitude and -111.41 longitude, 1,811 m (5,940 ft) above sea level.
The station reports from 1955 to 2026, 72 years of record.
1,464 records set at Wanship Dam still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Wanship Dam set a daily record high minimum temperature of 15.6 C (60.1 F) on 13 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: Utah, United States, 40.79 latitude, -111.41 longitude.
Elevation: 1,811 m (5,940 ft).
Period of record: 1955 to 2026, 72 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

23 days at or beyond a record

The band shows the record high and record low for each calendar day at Wanship Dam. The lines show the 2026 daily maximum and minimum. 23 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Wanship Dam, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	15.0 C (59.0 F)	-37.2 C (-35.0 F)	11.7 C (53.1 F)	-13.9 C (7.0 F)
Feb	18.9 C (66.0 F)	-38.3 C (-36.9 F)	15.0 C (59.0 F)	-15.6 C (3.9 F)
Mar	26.7 C (80.1 F)	-31.7 C (-25.1 F)	26.7 C (80.1 F)	-8.9 C (16.0 F)
Apr	29.4 C (84.9 F)	-17.2 C (1.0 F)	23.3 C (73.9 F)	-11.1 C (12.0 F)
May	34.4 C (93.9 F)	-9.4 C (15.1 F)	30.6 C (87.1 F)	-4.4 C (24.1 F)
Jun	37.2 C (99.0 F)	-6.1 C (21.0 F)	32.8 C (91.0 F)	-2.8 C (27.0 F)
Jul	38.3 C (100.9 F)	-3.3 C (26.1 F)	38.3 C (100.9 F)	1.7 C (35.1 F)
Aug	37.2 C (99.0 F)	-5.6 C (21.9 F)	36.1 C (97.0 F)	5.0 C (41.0 F)
Sep	36.1 C (97.0 F)	-11.1 C (12.0 F)	30.6 C (87.1 F)	5.0 C (41.0 F)
Oct	30.6 C (87.1 F)	-21.7 C (-7.1 F)	n/a	n/a
Nov	22.2 C (72.0 F)	-26.7 C (-16.1 F)	n/a	n/a
Dec	18.3 C (64.9 F)	-33.3 C (-27.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Wanship Dam still stand. 1962 holds the most, with 41.

Standing records at Wanship Dam by the year they were set
Year set	Standing records
1955	7
1956	24
1957	17
1958	13
1959	17
1960	19
1961	19
1962	41
1963	23
1964	35
1965	27
1966	26
1967	15
1968	7
1969	31
1970	24
1971	27
1972	24
1973	16
1974	19
1975	27
1976	18
1977	12
1978	19
1979	25
1980	19
1981	23
1982	34
1983	11
1984	26
1985	13
1986	22
1987	13
1988	16
1989	25
1990	27
1991	17
1992	15
1993	17
1994	15
1995	20
1996	24
1997	16
1998	9
1999	19
2000	21
2001	12
2002	23
2003	39
2004	21
2005	18
2006	26
2007	24
2008	12
2009	23
2010	23
2011	13
2012	38
2013	34
2014	15
2015	25
2016	16
2017	15
2018	10
2019	20
2020	16
2021	21
2022	19
2023	18
2024	8
2025	22
2026	19

All-Time Record Progression

7 new records

7 all-time records were set at Wanship Dam between 26 July 1987 and 27 July 2026. Each dot is a new record.

When Wanship Dam set new all-time records
Date	Kind	Detail
1987-07-26	Record high minimum temperature	Record high minimum temperature 20.0 C (68.0 F)
1993-01-11	Record snow depth	Record snow depth 83.8 cm (33.0 in)
2000-07-31	Record high maximum temperature	Record high maximum temperature 37.2 C (99.0 F)
2002-07-12	Record high maximum temperature	Record high maximum temperature 38.3 C (100.9 F)
2011-07-18	Record high minimum temperature	Record high minimum temperature 20.6 C (69.1 F)
2019-08-04	Record daily precipitation	Record daily precipitation 45.7 mm (1.8 in)
2026-07-27	Record high minimum temperature	Record high minimum temperature 21.7 C (71.1 F)

Wettest Day of Each Month

Aug: 45.7 mm (1.8 in)

The wettest day on record for each calendar month at Wanship Dam. The most was 45.7 mm (1.8 in) on 4 August 2019.

Record daily precipitation for each month at Wanship Dam
Month	Record daily precipitation (mm)	Date
Jan	22.9 mm (0.9 in)	1 January 2023
Feb	24.1 mm (0.9 in)	22 February 1977
Mar	25.1 mm (1.0 in)	3 March 1972
Apr	27.9 mm (1.1 in)	2 April 2013
May	37.3 mm (1.5 in)	10 May 1985
Jun	27.7 mm (1.1 in)	4 June 1998
Jul	44.7 mm (1.8 in)	26 July 1982
Aug	45.7 mm (1.8 in)	4 August 2019
Sep	44.7 mm (1.8 in)	1 September 2008
Oct	37.3 mm (1.5 in)	7 October 1985
Nov	33.0 mm (1.3 in)	12 November 1985
Dec	44.5 mm (1.8 in)	6 December 1956

Period of Record Coverage

1955 to 2026

72 years of record at Wanship Dam, 1955 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 1955, 1992, 2001, 2004, 2026.

Days with data per year at Wanship Dam
Year	Days with data	Share of year	Complete
1955	151	41%	No
1956	354	97%	Yes
1957	359	98%	Yes
1958	358	98%	Yes
1959	364	100%	Yes
1960	365	100%	Yes
1961	365	100%	Yes
1962	363	99%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	364	100%	Yes
1968	366	100%	Yes
1969	363	99%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	362	99%	Yes
1973	364	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	364	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	364	99%	Yes
1981	363	99%	Yes
1982	336	92%	Yes
1983	345	95%	Yes
1984	355	97%	Yes
1985	355	97%	Yes
1986	355	97%	Yes
1987	355	97%	Yes
1988	341	93%	Yes
1989	335	92%	Yes
1990	347	95%	Yes
1991	337	92%	Yes
1992	287	78%	No
1993	333	91%	Yes
1994	342	94%	Yes
1995	360	99%	Yes
1996	360	98%	Yes
1997	354	97%	Yes
1998	359	98%	Yes
1999	358	98%	Yes
2000	363	99%	Yes
2001	324	89%	No
2002	364	100%	Yes
2003	363	99%	Yes
2004	329	90%	No
2005	329	90%	Yes
2006	363	99%	Yes
2007	360	99%	Yes
2008	360	98%	Yes
2009	362	99%	Yes
2010	363	99%	Yes
2011	364	100%	Yes
2012	366	100%	Yes
2013	365	100%	Yes
2014	365	100%	Yes
2015	364	100%	Yes
2016	366	100%	Yes
2017	362	99%	Yes
2018	361	99%	Yes
2019	362	99%	Yes
2020	365	100%	Yes
2021	365	100%	Yes
2022	357	98%	Yes
2023	355	97%	Yes
2024	358	98%	Yes
2025	346	95%	Yes
2026	245	67%	No

Latest Records

Latest records at Wanship Dam
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
13 September 2026	Wanship Dam, US	daily high min (Provisional)	15.6 C (60.1 F)	4.5 C (8.1 F)	4 years	17 of 100 (Routine)
30 August 2026	Wanship Dam, US	daily rain (Provisional)	13.7 mm (0.5 in)	4.0 mm (0.16 in)	68 years	20 of 100 (Routine)
22 August 2026	Wanship Dam, US	daily high min (Tie, Provisional)	15.6 C (60.1 F)	tie	20 years	3 of 100 (Routine)
21 August 2026	Wanship Dam, US	daily high max (Tie, Provisional)	35.0 C (95.0 F)	tie	16 years	3 of 100 (Routine)
11 August 2026	Wanship Dam, US	daily high min	18.3 C (64.9 F)	1.6 C (2.9 F)	44 years	24 of 100 (Routine)
10 August 2026	Wanship Dam, US	daily high min (Tie)	15.0 C (59.0 F)	tie	52 years	5 of 100 (Routine)
7 August 2026	Wanship Dam, US	daily high max	35.6 C (96.1 F)	0.6 C (1.1 F)	36 years	18 of 100 (Routine)
3 August 2026	Wanship Dam, US	daily high max	35.6 C (96.1 F)	0.6 C (1.1 F)	33 years	18 of 100 (Routine)
2 August 2026	Wanship Dam, US	daily high max (Tie)	36.1 C (97.0 F)	tie	33 years	4 of 100 (Routine)
27 July 2026	Wanship Dam, US	all-time high min	21.7 C (71.1 F)	1.1 C (2.0 F)	15 years	33 of 100 (Routine)
27 July 2026	Wanship Dam, US	daily high max	36.1 C (97.0 F)	1.1 C (2.0 F)	17 years	15 of 100 (Routine)
26 July 2026	Wanship Dam, US	daily high max	36.1 C (97.0 F)	0.5 C (0.9 F)	25 years	15 of 100 (Routine)
12 July 2026	Wanship Dam, US	all-time high max (Tie)	38.3 C (100.9 F)	tie	24 years	8 of 100 (Routine)
11 July 2026	Wanship Dam, US	daily high max (Tie)	36.1 C (97.0 F)	tie	24 years	3 of 100 (Routine)
29 June 2026	Wanship Dam, US	daily low max (Tie)	18.3 C (64.9 F)	tie	67 years	6 of 100 (Routine)
11 June 2026	Wanship Dam, US	daily low min (Tie)	-2.8 C (27.0 F)	tie	4 years	2 of 100 (Routine)
13 May 2026	Wanship Dam, US	daily high max (Tie)	29.4 C (84.9 F)	tie	29 years	3 of 100 (Routine)
12 May 2026	Wanship Dam, US	daily high max	30.6 C (87.1 F)	1.2 C (2.2 F)	19 years	14 of 100 (Routine)
11 May 2026	Wanship Dam, US	daily high max (Tie)	28.9 C (84.0 F)	tie	19 years	3 of 100 (Routine)
17 April 2026	Wanship Dam, US	daily low min (Tie)	-11.1 C (12.0 F)	tie	65 years	6 of 100 (Routine)

Climate Trend

61 complete years, 1956 to 2024

One stripe for each of 61 complete years at Wanship Dam, 1956 to 2024. Blue stripes are years cooler than the station's own mean of 7.2 C (44.9 F); red stripes are warmer. The coolest year was 1964, at 5.0 C (40.9 F), and the warmest was 2012, at 9.8 C (49.6 F). The strongest colour marks a difference of 2.6 C (4.7 F).

Annual mean temperature at Wanship Dam as warming stripes, 1956 to 2024
Year	Annual mean temperature	Difference from the station mean
1956	6.1 C	-1.14 C
1957	6.2 C	-0.97 C
1958	7.1 C	-0.07 C
1959	7.1 C	-0.14 C
1960	6.6 C	-0.55 C
1961	6.8 C	-0.37 C
1962	6.3 C	-0.87 C
1963	6.7 C	-0.48 C
1964	5.0 C	-2.22 C
1965	6.3 C	-0.88 C
1966	6.5 C	-0.72 C
1967	6.7 C	-0.47 C
1968	6.2 C	-0.95 C
1969	6.7 C	-0.45 C
1970	6.6 C	-0.64 C
1971	6.3 C	-0.88 C
1972	7.0 C	-0.15 C
1973	6.2 C	-1.04 C
1974	6.7 C	-0.48 C
1975	5.6 C	-1.59 C
1976	6.3 C	-0.94 C
1977	7.2 C	-0.03 C
1978	6.7 C	-0.48 C
1979	6.7 C	-0.50 C
1980	7.4 C	+0.19 C
1981	8.2 C	+1.00 C
1982	5.9 C	-1.26 C
1984	5.5 C	-1.68 C
1985	6.0 C	-1.16 C
1986	7.7 C	+0.53 C
1987	7.4 C	+0.18 C
1988	7.8 C	+0.60 C
1989	7.0 C	-0.19 C
1990	7.3 C	+0.06 C
1991	6.6 C	-0.63 C
1995	7.0 C	-0.19 C
1996	8.0 C	+0.77 C
1997	7.3 C	+0.15 C
1998	7.5 C	+0.27 C
1999	7.5 C	+0.30 C
2000	7.6 C	+0.45 C
2002	8.0 C	+0.83 C
2003	8.8 C	+1.61 C
2006	8.4 C	+1.21 C
2007	8.8 C	+1.65 C
2008	7.4 C	+0.22 C
2009	7.6 C	+0.44 C
2010	8.1 C	+0.94 C
2011	7.6 C	+0.43 C
2012	9.8 C	+2.59 C
2013	7.9 C	+0.66 C
2014	8.2 C	+1.04 C
2015	8.6 C	+1.41 C
2016	8.0 C	+0.80 C
2017	8.1 C	+0.88 C
2018	8.0 C	+0.80 C
2019	6.5 C	-0.73 C
2020	7.7 C	+0.53 C
2021	8.5 C	+1.26 C
2022	7.2 C	+0.05 C
2024	8.0 C	+0.84 C

The annual mean temperature here has risen by 0.3 C (0.2 to 0.4) per decade over 1956 to 2024. In Fahrenheit: 0.6 F (0.4 to 0.7) per decade. The slope is a straight line fitted to 61 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Wanship Dam
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.3 C (0.2 to 0.4) per decade	0.6 F (0.4 to 0.7) per decade	1956 to 2024	61	Rise
Mean daily maximum	0.3 C (0.1 to 0.4) per decade	0.5 F (0.3 to 0.6) per decade	1956 to 2024	61	Rise
Mean daily minimum	0.4 C (0.3 to 0.5) per decade	0.7 F (0.5 to 0.8) per decade	1956 to 2024	61	Rise

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

1955 to 2026

Yearly extremes at Wanship Dam: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.3 C (100.9 F)	2002	35.0 C (95.0 F)	72
Coldest night (TNn)	-38.3 C (-36.9 F)	1982	-26.9 C (-16.5 F)	72
Wettest day (Rx1day)	45.7 mm (1.8 in)	2019	24.7 mm (1.0 in)	72
Wettest five days (Rx5day)	109.2 mm (4.3 in)	1964	42.5 mm (1.7 in)	72
Longest dry spell (CDD)	103 days	2020	30 days	72

Hottest day (TXx)

The hottest day of the year at Wanship Dam, 1955 to 2026. The record is 38.3 C (100.9 F) in 2002, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at Wanship Dam by year
Year	Hottest day (TXx)
1955	32.8 C (91.0 F)
1956	32.2 C (90.0 F)
1957	32.8 C (91.0 F)
1958	33.3 C (91.9 F)
1959	33.9 C (93.0 F)
1960	34.4 C (93.9 F)
1961	32.2 C (90.0 F)
1962	32.2 C (90.0 F)
1963	31.7 C (89.1 F)
1964	32.2 C (90.0 F)
1965	30.6 C (87.1 F)
1966	32.8 C (91.0 F)
1967	33.3 C (91.9 F)
1968	32.8 C (91.0 F)
1969	33.3 C (91.9 F)
1970	33.9 C (93.0 F)
1971	35.0 C (95.0 F)
1972	35.0 C (95.0 F)
1973	33.9 C (93.0 F)
1974	34.4 C (93.9 F)
1975	33.3 C (91.9 F)
1976	35.0 C (95.0 F)
1977	34.4 C (93.9 F)
1978	35.0 C (95.0 F)
1979	35.6 C (96.1 F)
1980	33.9 C (93.0 F)
1981	36.1 C (97.0 F)
1982	33.9 C (93.0 F)
1983	33.9 C (93.0 F)
1984	33.3 C (91.9 F)
1985	36.7 C (98.1 F)
1986	36.1 C (97.0 F)
1987	33.9 C (93.0 F)
1988	36.1 C (97.0 F)
1989	36.1 C (97.0 F)
1990	35.0 C (95.0 F)
1991	34.4 C (93.9 F)
1992	36.1 C (97.0 F)
1993	32.2 C (90.0 F)
1994	36.1 C (97.0 F)
1995	34.4 C (93.9 F)
1996	35.6 C (96.1 F)
1997	34.4 C (93.9 F)
1998	36.7 C (98.1 F)
1999	35.6 C (96.1 F)
2000	37.2 C (99.0 F)
2001	37.2 C (99.0 F)
2002	38.3 C (100.9 F)
2003	36.7 C (98.1 F)
2004	34.4 C (93.9 F)
2005	37.2 C (99.0 F)
2006	37.8 C (100.0 F)
2007	37.8 C (100.0 F)
2008	35.6 C (96.1 F)
2009	35.6 C (96.1 F)
2010	35.6 C (96.1 F)
2011	35.0 C (95.0 F)
2012	36.7 C (98.1 F)
2013	37.2 C (99.0 F)
2014	35.0 C (95.0 F)
2015	35.0 C (95.0 F)
2016	34.4 C (93.9 F)
2017	35.0 C (95.0 F)
2018	35.6 C (96.1 F)
2019	34.4 C (93.9 F)
2020	36.7 C (98.1 F)
2021	37.2 C (99.0 F)
2022	36.1 C (97.0 F)
2023	35.0 C (95.0 F)
2024	36.1 C (97.0 F)
2025	35.6 C (96.1 F)
2026	38.3 C (100.9 F)

Coldest night (TNn)

The coldest night of the year at Wanship Dam, 1955 to 2026. The record is -38.3 C (-36.9 F) in 1982, marked on the chart; the median year is -26.9 C (-16.5 F).

Coldest night (TNn) at Wanship Dam by year
Year	Coldest night (TNn)
1955	-26.1 C (-15.0 F)
1956	-28.9 C (-20.0 F)
1957	-30.6 C (-23.1 F)
1958	-25.6 C (-14.1 F)
1959	-26.7 C (-16.1 F)
1960	-30.6 C (-23.1 F)
1961	-31.1 C (-24.0 F)
1962	-28.9 C (-20.0 F)
1963	-37.2 C (-35.0 F)
1964	-31.7 C (-25.1 F)
1965	-24.4 C (-11.9 F)
1966	-28.3 C (-18.9 F)
1967	-22.8 C (-9.0 F)
1968	-26.1 C (-15.0 F)
1969	-27.2 C (-17.0 F)
1970	-26.7 C (-16.1 F)
1971	-28.9 C (-20.0 F)
1972	-31.7 C (-25.1 F)
1973	-28.9 C (-20.0 F)
1974	-31.7 C (-25.1 F)
1975	-28.9 C (-20.0 F)
1976	-25.6 C (-14.1 F)
1977	-27.2 C (-17.0 F)
1978	-30.0 C (-22.0 F)
1979	-30.6 C (-23.1 F)
1980	-29.4 C (-20.9 F)
1981	-21.1 C (-6.0 F)
1982	-38.3 C (-36.9 F)
1983	-23.3 C (-9.9 F)
1984	-31.7 C (-25.1 F)
1985	-32.2 C (-26.0 F)
1986	-21.1 C (-6.0 F)
1987	-26.1 C (-15.0 F)
1988	-26.1 C (-15.0 F)
1989	-37.2 C (-35.0 F)
1990	-33.3 C (-27.9 F)
1991	-27.2 C (-17.0 F)
1992	-23.3 C (-9.9 F)
1993	-26.1 C (-15.0 F)
1994	-26.1 C (-15.0 F)
1995	-26.7 C (-16.1 F)
1996	-27.8 C (-18.0 F)
1997	-23.9 C (-11.0 F)
1998	-25.6 C (-14.1 F)
1999	-20.0 C (-4.0 F)
2000	-22.2 C (-8.0 F)
2001	-27.2 C (-17.0 F)
2002	-32.8 C (-27.0 F)
2003	-25.6 C (-14.1 F)
2004	-24.4 C (-11.9 F)
2005	-25.0 C (-13.0 F)
2006	-22.2 C (-8.0 F)
2007	-28.3 C (-18.9 F)
2008	-27.2 C (-17.0 F)
2009	-26.1 C (-15.0 F)
2010	-21.1 C (-6.0 F)
2011	-27.8 C (-18.0 F)
2012	-20.0 C (-4.0 F)
2013	-27.8 C (-18.0 F)
2014	-29.4 C (-20.9 F)
2015	-27.8 C (-18.0 F)
2016	-28.3 C (-18.9 F)
2017	-31.1 C (-24.0 F)
2018	-25.0 C (-13.0 F)
2019	-25.6 C (-14.1 F)
2020	-22.2 C (-8.0 F)
2021	-20.0 C (-4.0 F)
2022	-26.1 C (-15.0 F)
2023	-31.7 C (-25.1 F)
2024	-22.2 C (-8.0 F)
2025	-18.9 C (-2.0 F)
2026	-15.6 C (3.9 F)

Wettest day (Rx1day)

The wettest day of the year at Wanship Dam, 1955 to 2026. The record is 45.7 mm (1.8 in) in 2019, marked on the chart; the median year is 24.7 mm (1.0 in).

Wettest day (Rx1day) at Wanship Dam by year
Year	Wettest day (Rx1day)
1955	27.4 mm (1.1 in)
1956	44.5 mm (1.8 in)
1957	27.2 mm (1.1 in)
1958	28.7 mm (1.1 in)
1959	18.8 mm (0.7 in)
1960	19.8 mm (0.8 in)
1961	16.0 mm (0.6 in)
1962	18.3 mm (0.7 in)
1963	32.5 mm (1.3 in)
1964	39.4 mm (1.6 in)
1965	33.0 mm (1.3 in)
1966	26.7 mm (1.1 in)
1967	20.3 mm (0.8 in)
1968	35.6 mm (1.4 in)
1969	30.0 mm (1.2 in)
1970	31.2 mm (1.2 in)
1971	20.1 mm (0.8 in)
1972	25.1 mm (1.0 in)
1973	27.9 mm (1.1 in)
1974	19.1 mm (0.8 in)
1975	24.4 mm (1.0 in)
1976	11.9 mm (0.5 in)
1977	24.1 mm (0.9 in)
1978	36.6 mm (1.4 in)
1979	29.0 mm (1.1 in)
1980	22.4 mm (0.9 in)
1981	29.5 mm (1.2 in)
1982	44.7 mm (1.8 in)
1983	22.9 mm (0.9 in)
1984	24.4 mm (1.0 in)
1985	37.3 mm (1.5 in)
1986	36.3 mm (1.4 in)
1987	17.5 mm (0.7 in)
1988	18.0 mm (0.7 in)
1989	21.1 mm (0.8 in)
1990	30.5 mm (1.2 in)
1991	23.4 mm (0.9 in)
1992	16.0 mm (0.6 in)
1993	24.9 mm (1.0 in)
1994	27.9 mm (1.1 in)
1995	22.6 mm (0.9 in)
1996	43.2 mm (1.7 in)
1997	18.3 mm (0.7 in)
1998	27.7 mm (1.1 in)
1999	20.6 mm (0.8 in)
2000	23.9 mm (0.9 in)
2001	34.3 mm (1.4 in)
2002	19.1 mm (0.8 in)
2003	23.4 mm (0.9 in)
2004	24.9 mm (1.0 in)
2005	19.1 mm (0.8 in)
2006	27.9 mm (1.1 in)
2007	30.7 mm (1.2 in)
2008	44.7 mm (1.8 in)
2009	22.9 mm (0.9 in)
2010	23.6 mm (0.9 in)
2011	22.1 mm (0.9 in)
2012	24.9 mm (1.0 in)
2013	27.9 mm (1.1 in)
2014	33.5 mm (1.3 in)
2015	15.2 mm (0.6 in)
2016	28.4 mm (1.1 in)
2017	30.5 mm (1.2 in)
2018	17.8 mm (0.7 in)
2019	45.7 mm (1.8 in)
2020	15.2 mm (0.6 in)
2021	30.7 mm (1.2 in)
2022	22.6 mm (0.9 in)
2023	22.9 mm (0.9 in)
2024	18.8 mm (0.7 in)
2025	19.6 mm (0.8 in)
2026	16.3 mm (0.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Wanship Dam, 1955 to 2026. The record is 109.2 mm (4.3 in) in 1964, marked on the chart; the median year is 42.5 mm (1.7 in).

Wettest five days (Rx5day) at Wanship Dam by year
Year	Wettest five days (Rx5day)
1955	27.9 mm (1.1 in)
1956	44.5 mm (1.8 in)
1957	48.0 mm (1.9 in)
1958	39.1 mm (1.5 in)
1959	40.4 mm (1.6 in)
1960	41.0 mm (1.6 in)
1961	24.5 mm (1.0 in)
1962	32.8 mm (1.3 in)
1963	42.9 mm (1.7 in)
1964	109.2 mm (4.3 in)
1965	45.2 mm (1.8 in)
1966	45.7 mm (1.8 in)
1967	28.7 mm (1.1 in)
1968	48.3 mm (1.9 in)
1969	50.0 mm (2.0 in)
1970	47.2 mm (1.9 in)
1971	27.3 mm (1.1 in)
1972	32.6 mm (1.3 in)
1973	42.4 mm (1.7 in)
1974	38.1 mm (1.5 in)
1975	37.7 mm (1.5 in)
1976	20.6 mm (0.8 in)
1977	42.0 mm (1.7 in)
1978	44.5 mm (1.8 in)
1979	45.0 mm (1.8 in)
1980	52.7 mm (2.1 in)
1981	40.9 mm (1.6 in)
1982	95.5 mm (3.8 in)
1983	37.1 mm (1.5 in)
1984	54.4 mm (2.1 in)
1985	54.5 mm (2.1 in)
1986	50.5 mm (2.0 in)
1987	27.2 mm (1.1 in)
1988	33.5 mm (1.3 in)
1989	41.4 mm (1.6 in)
1990	32.3 mm (1.3 in)
1991	40.1 mm (1.6 in)
1992	18.2 mm (0.7 in)
1993	66.5 mm (2.6 in)
1994	64.3 mm (2.5 in)
1995	54.3 mm (2.1 in)
1996	58.4 mm (2.3 in)
1997	36.3 mm (1.4 in)
1998	54.4 mm (2.1 in)
1999	44.0 mm (1.7 in)
2000	31.8 mm (1.3 in)
2001	48.3 mm (1.9 in)
2002	33.8 mm (1.3 in)
2003	52.6 mm (2.1 in)
2004	68.6 mm (2.7 in)
2005	37.7 mm (1.5 in)
2006	44.9 mm (1.8 in)
2007	43.1 mm (1.7 in)
2008	44.7 mm (1.8 in)
2009	47.0 mm (1.9 in)
2010	75.2 mm (3.0 in)
2011	47.5 mm (1.9 in)
2012	41.9 mm (1.6 in)
2013	41.6 mm (1.6 in)
2014	70.9 mm (2.8 in)
2015	39.6 mm (1.6 in)
2016	46.2 mm (1.8 in)
2017	40.7 mm (1.6 in)
2018	28.4 mm (1.1 in)
2019	86.3 mm (3.4 in)
2020	27.8 mm (1.1 in)
2021	67.2 mm (2.6 in)
2022	30.5 mm (1.2 in)
2023	31.8 mm (1.3 in)
2024	42.6 mm (1.7 in)
2025	29.3 mm (1.2 in)
2026	30.5 mm (1.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Wanship Dam, 1955 to 2026. The record is 103 days in 2020, marked on the chart; the median year is 30 days.

Longest dry spell (CDD) at Wanship Dam by year
Year	Longest dry spell (CDD)
1955	24 days
1956	35 days
1957	25 days
1958	54 days
1959	22 days
1960	29 days
1961	33 days
1962	30 days
1963	40 days
1964	38 days
1965	26 days
1966	26 days
1967	22 days
1968	27 days
1969	28 days
1970	25 days
1971	22 days
1972	26 days
1973	22 days
1974	36 days
1975	23 days
1976	39 days
1977	35 days
1978	44 days
1979	59 days
1980	30 days
1981	23 days
1982	15 days
1983	26 days
1984	25 days
1985	33 days
1986	25 days
1987	28 days
1988	36 days
1989	30 days
1990	22 days
1991	38 days
1992	40 days
1993	30 days
1994	52 days
1995	18 days
1996	49 days
1997	23 days
1998	25 days
1999	21 days
2000	23 days
2001	34 days
2002	44 days
2003	39 days
2004	19 days
2005	34 days
2006	26 days
2007	37 days
2008	40 days
2009	21 days
2010	34 days
2011	16 days
2012	38 days
2013	35 days
2014	22 days
2015	23 days
2016	54 days
2017	34 days
2018	40 days
2019	32 days
2020	103 days
2021	30 days
2022	45 days
2023	23 days
2024	33 days
2025	51 days
2026	37 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.

Frost Dates and Growing Season

61 years with a frost

Across 61 years with a frost, the median last spring frost at Wanship Dam falls on 17 June and the median first autumn frost on 5 September, which leaves a median of 85 days between them.

In 1988 to 2024 the median growing season was 90 days. That is 25 days more than in 1956 to 1986.

Fitted over all years, the growing season changes by +7.5 days per decade at this station.

Frost dates and growing season at Wanship Dam
Measure	Median, all years	Earliest period (1956 to 1986)	Recent period (1988 to 2024)	Recent against earliest	Fitted trend
Last spring frost	17 June	21 June	16 June	5 days earlier	-1.4 days per decade
First autumn frost	5 September	26 August	12 September	17 days later	+6.1 days per decade
Growing days	85 days	65 days	90 days	25 days more	+7.5 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

69 years, 1956 to 2025

A day with at least 25.1 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 51.4 mm (2.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Wanship 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	25.1 mm (1.0 in)
5 years	32.3 mm (1.3 in)
10 years	36.9 mm (1.5 in)
25 years	42.8 mm (1.7 in)
50 years	47.1 mm (1.9 in)
100 years	51.4 mm (2.0 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 1956 to 2025.

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: 45.7 mm (1.8 in) in 2019; 44.7 mm (1.8 in) in 1982; 44.7 mm (1.8 in) in 2008.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2009 to 2024 against 1961 to 1990

Over 2009 to 2024, Wanship Dam had a mean temperature of 8.0 C (46.4 F) and 416.8 mm (16.4 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Park Valley (United States, 197 km away), Cedar Pt (United States, 396 km away) and Malad (United States, 172 km away).

Climate twins of Wanship Dam: stations whose 1961 to 1990 climate is closest to its 2009 to 2024 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Park Valley	United States	197 km (122 mi)	7.8 C (46.0 F)	320.1 mm (12.6 in)	0.63
Cedar Pt	United States	396 km (246 mi)	8.1 C (46.7 F)	367.6 mm (14.5 in)	0.65
Malad	United States	172 km (107 mi)	7.9 C (46.1 F)	389.2 mm (15.3 in)	0.70

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

Data for Wanship Dam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Wanship 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-14. Last revised 14 October 2026 (2026-10-14).