Union 3 SSE Weather Records (USC00469011)

Record envelope, standing records and threshold days for Union 3 SSE (USC00469011), West Virginia, United States, with 119 years of record.

Key Facts for Union 3 SSE

Union 3 SSE (USC00469011) is a weather station in West Virginia, United States at 37.54 latitude and -80.53 longitude, 643 m (2,110 ft) above sea level.
The station reports from 1894 to 2012, 119 years of record.
1,464 records set at Union 3 SSE still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Union 3 SSE set a daily record high maximum temperature of 28.3 C (82.9 F) on 24 March 2012.

About the Station

Location: West Virginia, United States, 37.54 latitude, -80.53 longitude.
Elevation: 643 m (2,110 ft).
Period of record: 1894 to 2012, 119 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

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 Union 3 SSE. 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 Union 3 SSE, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	24.4 C (75.9 F)	-30.6 C (-23.1 F)	n/a	n/a
Feb	25.0 C (77.0 F)	-32.2 C (-26.0 F)	n/a	n/a
Mar	31.7 C (89.1 F)	-23.9 C (-11.0 F)	n/a	n/a
Apr	34.4 C (93.9 F)	-12.8 C (9.0 F)	n/a	n/a
May	35.0 C (95.0 F)	-6.1 C (21.0 F)	n/a	n/a
Jun	37.2 C (99.0 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	38.9 C (102.0 F)	2.2 C (36.0 F)	n/a	n/a
Aug	37.8 C (100.0 F)	1.7 C (35.1 F)	n/a	n/a
Sep	37.8 C (100.0 F)	-4.4 C (24.1 F)	n/a	n/a
Oct	34.4 C (93.9 F)	-13.3 C (8.1 F)	n/a	n/a
Nov	30.6 C (87.1 F)	-18.3 C (-0.9 F)	n/a	n/a
Dec	23.3 C (73.9 F)	-37.2 C (-35.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Union 3 SSE still stand. 1925 holds the most, with 36.

Standing records at Union 3 SSE by the year they were set
Year set	Standing records
1902	2
1903	25
1904	8
1905	2
1906	26
1907	8
1908	9
1909	15
1910	8
1911	11
1912	9
1913	29
1914	26
1915	9
1916	7
1917	31
1918	17
1919	11
1920	10
1921	13
1922	7
1923	12
1924	11
1925	36
1926	23
1927	14
1928	17
1929	17
1930	31
1931	15
1932	16
1933	15
1934	23
1936	21
1937	14
1938	19
1939	21
1940	13
1941	17
1942	18
1943	20
1944	12
1945	10
1946	11
1947	15
1948	12
1949	18
1950	21
1951	10
1952	11
1953	22
1954	16
1955	11
1956	8
1957	15
1958	9
1959	9
1960	18
1961	10
1962	17
1963	20
1964	12
1965	10
1966	10
1967	16
1968	8
1969	6
1970	15
1971	12
1972	17
1973	6
1974	16
1975	4
1976	21
1977	14
1978	2
1979	17
1980	12
1981	9
1982	18
1983	10
1984	15
1985	13
1986	9
1987	5
1988	11
1989	22
1990	16
1991	16
1992	9
1993	10
1994	12
1995	9
1996	18
1997	14
1998	10
1999	11
2000	8
2001	13
2002	12
2003	9
2004	15
2005	14
2006	10
2007	4
2011	9
2012	4

All-Time Record Progression

7 new records

7 all-time records were set at Union 3 SSE between 19 July 1954 and 29 July 1999. Each dot is a new record.

When Union 3 SSE set new all-time records
Date	Kind	Detail
1954-07-19	Record daily precipitation	Record daily precipitation 104.1 mm (4.1 in)
1970-01-09	Record low maximum temperature	Record low maximum temperature -13.3 C (8.1 F)
1970-01-10	Record low maximum temperature	Record low maximum temperature -14.4 C (6.1 F)
1983-12-25	Record low maximum temperature	Record low maximum temperature -15.0 C (5.0 F)
1985-01-21	Record low maximum temperature	Record low maximum temperature -16.7 C (1.9 F)
1990-07-10	Record high minimum temperature	Record high minimum temperature 22.8 C (73.0 F)
1999-07-29	Record high minimum temperature	Record high minimum temperature 23.3 C (73.9 F)

Wettest Day of Each Month

Jul: 104.1 mm (4.1 in)

The wettest day on record for each calendar month at Union 3 SSE. The most was 104.1 mm (4.1 in) on 19 July 1954.

Record daily precipitation for each month at Union 3 SSE
Month	Record daily precipitation (mm)	Date
Jan	56.1 mm (2.2 in)	28 January 1998
Feb	46.0 mm (1.8 in)	16 February 1903
Mar	74.2 mm (2.9 in)	12 March 1963
Apr	69.9 mm (2.8 in)	7 April 1895
May	59.4 mm (2.3 in)	25 May 1996
Jun	61.2 mm (2.4 in)	28 June 1951
Jul	104.1 mm (4.1 in)	19 July 1954
Aug	76.2 mm (3.0 in)	12 August 1923
Sep	72.4 mm (2.9 in)	14 September 1966
Oct	93.0 mm (3.7 in)	2 October 1929
Nov	78.7 mm (3.1 in)	23 November 1929
Dec	50.0 mm (2.0 in)	1 December 2010

Period of Record Coverage

1902 to 2012

107 years of record at Union 3 SSE, 1902 to 2012. 27 years have data for under 90 percent of days and are left out of rankings: 1902, 1903, 1904, 1905, 1906, 1913, 1918, 1922 and others.

Days with data per year at Union 3 SSE
Year	Days with data	Share of year	Complete
1902	31	8%	No
1903	313	86%	No
1904	256	70%	No
1905	58	16%	No
1906	327	90%	No
1907	364	100%	Yes
1908	340	93%	Yes
1909	334	92%	Yes
1910	359	98%	Yes
1911	329	90%	Yes
1912	363	99%	Yes
1913	290	79%	No
1914	361	99%	Yes
1915	349	96%	Yes
1916	353	96%	Yes
1917	351	96%	Yes
1918	276	76%	No
1919	358	98%	Yes
1920	366	100%	Yes
1921	356	98%	Yes
1922	310	85%	No
1923	312	85%	No
1924	310	85%	No
1925	312	85%	No
1926	311	85%	No
1927	313	86%	No
1928	315	86%	No
1929	284	78%	No
1930	307	84%	No
1931	311	85%	No
1932	311	85%	No
1933	288	79%	No
1934	282	77%	No
1936	268	73%	No
1937	297	81%	No
1938	354	97%	Yes
1939	355	97%	Yes
1940	192	52%	No
1941	337	92%	Yes
1942	360	99%	Yes
1943	355	97%	Yes
1944	361	99%	Yes
1945	347	95%	Yes
1946	345	95%	Yes
1947	329	90%	Yes
1948	347	95%	Yes
1949	363	99%	Yes
1950	364	100%	Yes
1951	365	100%	Yes
1952	335	92%	Yes
1953	365	100%	Yes
1954	364	100%	Yes
1955	365	100%	Yes
1956	365	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	363	99%	Yes
1960	366	100%	Yes
1961	360	99%	Yes
1962	363	99%	Yes
1963	364	100%	Yes
1964	364	99%	Yes
1965	365	100%	Yes
1966	364	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	364	100%	Yes
1972	366	100%	Yes
1973	304	83%	No
1974	365	100%	Yes
1975	362	99%	Yes
1976	365	100%	Yes
1977	359	98%	Yes
1978	246	67%	No
1979	364	100%	Yes
1980	366	100%	Yes
1981	364	100%	Yes
1982	332	91%	Yes
1983	362	99%	Yes
1984	364	99%	Yes
1985	363	99%	Yes
1986	362	99%	Yes
1987	361	99%	Yes
1988	361	99%	Yes
1989	361	99%	Yes
1990	358	98%	Yes
1991	364	100%	Yes
1992	360	98%	Yes
1993	359	98%	Yes
1994	360	99%	Yes
1995	361	99%	Yes
1996	361	99%	Yes
1997	363	99%	Yes
1998	365	100%	Yes
1999	348	95%	Yes
2000	351	96%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	362	99%	Yes
2004	359	98%	Yes
2005	365	100%	Yes
2006	363	99%	Yes
2007	150	41%	No
2011	359	98%	Yes
2012	91	25%	No

Latest Records

Latest records at Union 3 SSE
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 March 2012	Union 3 SSE, US	daily high max	28.3 C (82.9 F)	1.1 C (2.0 F)	92 years	38 of 100 (Notable)
23 March 2012	Union 3 SSE, US	daily high max	28.3 C (82.9 F)	1.1 C (2.0 F)	105 years	41 of 100 (Notable)
21 March 2012	Union 3 SSE, US	daily high max	29.4 C (84.9 F)	1.1 C (2.0 F)	91 years	38 of 100 (Notable)
19 March 2012	Union 3 SSE, US	daily high min	11.1 C (52.0 F)	1.1 C (2.0 F)	9 years	13 of 100 (Routine)
18 March 2012	Union 3 SSE, US	daily high min (Tie)	10.0 C (50.0 F)	tie	9 years	3 of 100 (Routine)
20 February 2012	Union 3 SSE, US	daily snowfall	18.3 cm (7.2 in)	0.5 cm (0.2 in)	64 years	29 of 100 (Routine)
20 February 2012	Union 3 SSE, US	daily snow depth (Tie)	17.8 cm (7.0 in)	tie	64 years	7 of 100 (Routine)
8 December 2011	Union 3 SSE, US	daily rain	42.9 mm (1.7 in)	22.1 mm (0.9 in)	60 years	55 of 100 (Notable)
7 December 2011	Union 3 SSE, US	daily high min	8.9 C (48.0 F)	1.1 C (2.0 F)	54 years	27 of 100 (Routine)
28 November 2011	Union 3 SSE, US	daily high min (Tie)	13.3 C (55.9 F)	tie	20 years	4 of 100 (Routine)
2 October 2011	Union 3 SSE, US	daily low max	8.3 C (46.9 F)	0.6 C (1.1 F)	44 years	24 of 100 (Routine)
7 September 2011	Union 3 SSE, US	daily low max	16.7 C (62.1 F)	2.2 C (4.0 F)	36 years	26 of 100 (Routine)
22 August 2011	Union 3 SSE, US	daily high min (Tie)	18.3 C (64.9 F)	tie	56 years	6 of 100 (Routine)
16 August 2011	Union 3 SSE, US	daily low max	20.6 C (69.1 F)	1.1 C (2.0 F)	65 years	32 of 100 (Routine)
6 August 2011	Union 3 SSE, US	daily high min (Tie)	21.7 C (71.1 F)	tie	93 years	9 of 100 (Routine)
23 July 2011	Union 3 SSE, US	daily high min	21.1 C (70.0 F)	0.5 C (0.9 F)	12 years	14 of 100 (Routine)
20 July 2011	Union 3 SSE, US	daily high min (Tie)	20.0 C (68.0 F)	tie	76 years	8 of 100 (Routine)
17 July 2011	Union 3 SSE, US	daily low max	22.2 C (72.0 F)	0.6 C (1.1 F)	37 years	22 of 100 (Routine)
9 July 2011	Union 3 SSE, US	daily rain	58.4 mm (2.3 in)	36.3 mm (1.4 in)	2 years	44 of 100 (Notable)
5 July 2011	Union 3 SSE, US	daily high min (Tie)	19.4 C (66.9 F)	tie	82 years	8 of 100 (Routine)

Climate Trend

85 complete years, 1907 to 2011

One stripe for each of 85 complete years at Union 3 SSE, 1907 to 2011. Blue stripes are years cooler than the station's own mean of 11.0 C (51.7 F); red stripes are warmer. The coolest year was 1963, at 9.3 C (48.8 F), and the warmest was 1927, at 12.8 C (55.1 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at Union 3 SSE as warming stripes, 1907 to 2011
Year	Annual mean temperature	Difference from the station mean
1907	10.4 C	-0.59 C
1910	10.0 C	-0.94 C
1914	11.0 C	+0.02 C
1915	11.1 C	+0.10 C
1916	10.8 C	-0.16 C
1917	9.8 C	-1.21 C
1919	12.4 C	+1.39 C
1920	10.9 C	-0.10 C
1921	12.8 C	+1.84 C
1922	12.5 C	+1.57 C
1923	12.1 C	+1.14 C
1924	11.1 C	+0.14 C
1925	12.1 C	+1.09 C
1926	11.4 C	+0.47 C
1927	12.8 C	+1.88 C
1928	11.8 C	+0.88 C
1930	12.4 C	+1.42 C
1931	12.3 C	+1.37 C
1932	12.2 C	+1.27 C
1933	11.9 C	+0.97 C
1937	10.8 C	-0.18 C
1938	12.0 C	+1.04 C
1939	12.6 C	+1.59 C
1942	10.6 C	-0.35 C
1943	10.6 C	-0.32 C
1944	10.6 C	-0.33 C
1945	10.9 C	-0.06 C
1946	11.6 C	+0.66 C
1947	10.4 C	-0.60 C
1948	10.8 C	-0.19 C
1949	11.9 C	+0.92 C
1950	10.9 C	-0.10 C
1951	10.6 C	-0.33 C
1953	11.5 C	+0.58 C
1954	11.1 C	+0.14 C
1955	11.1 C	+0.10 C
1956	11.0 C	+0.01 C
1957	11.4 C	+0.40 C
1958	9.9 C	-1.07 C
1959	11.2 C	+0.26 C
1960	9.6 C	-1.37 C
1961	10.0 C	-0.96 C
1962	9.6 C	-1.38 C
1963	9.3 C	-1.62 C
1964	10.4 C	-0.54 C
1965	10.5 C	-0.44 C
1966	9.9 C	-1.09 C
1967	9.9 C	-1.11 C
1968	9.6 C	-1.40 C
1969	9.6 C	-1.33 C
1970	10.6 C	-0.39 C
1971	10.6 C	-0.37 C
1972	10.3 C	-0.64 C
1974	10.8 C	-0.19 C
1975	10.8 C	-0.19 C
1976	9.7 C	-1.26 C
1977	10.4 C	-0.53 C
1979	10.7 C	-0.29 C
1980	10.8 C	-0.19 C
1981	10.3 C	-0.69 C
1983	10.8 C	-0.14 C
1984	11.3 C	+0.34 C
1985	11.3 C	+0.32 C
1986	11.5 C	+0.49 C
1987	11.4 C	+0.43 C
1988	10.6 C	-0.33 C
1989	10.9 C	-0.05 C
1990	12.6 C	+1.65 C
1991	12.2 C	+1.23 C
1992	11.1 C	+0.12 C
1993	10.3 C	-0.62 C
1994	10.3 C	-0.70 C
1995	10.1 C	-0.90 C
1996	9.7 C	-1.24 C
1997	9.7 C	-1.27 C
1998	11.3 C	+0.30 C
1999	10.7 C	-0.25 C
2000	10.5 C	-0.45 C
2001	11.0 C	+0.02 C
2002	11.3 C	+0.29 C
2003	10.6 C	-0.37 C
2004	11.0 C	+0.06 C
2005	11.7 C	+0.78 C
2006	11.5 C	+0.56 C
2011	12.3 C	+1.35 C

The annual mean temperature here has fallen by 0.07 C (0.01 to 0.14) per decade over 1907 to 2011. In Fahrenheit: 0.13 F (0.01 to 0.24) per decade. The slope is a straight line fitted to 85 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Union 3 SSE
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.07 C (-0.14 to -0.01) per decade	-0.13 F (-0.24 to -0.01) per decade	1907 to 2011	85	Fall
Mean daily maximum	-0.2 C (-0.3 to -0.1) per decade	-0.3 F (-0.5 to -0.2) per decade	1907 to 2011	85	Fall
Mean daily minimum	0.04 C (-0.03 to 0.10) per decade	0.07 F (-0.05 to 0.18) per decade	1907 to 2011	85	Not clearly different from zero

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

1894 to 2012

Yearly extremes at Union 3 SSE: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.9 C (102.0 F)	1926	33.3 C (91.9 F)	107
Coldest night (TNn)	-37.2 C (-35.0 F)	1917	-19.4 C (-2.9 F)	107
Wettest day (Rx1day)	104.1 mm (4.1 in)	1954	49.7 mm (2.0 in)	112
Wettest five days (Rx5day)	171.9 mm (6.8 in)	1954	75.1 mm (3.0 in)	112
Longest dry spell (CDD)	35 days	1953	18 days	112

Hottest day (TXx)

The hottest day of the year at Union 3 SSE, 1894 to 2012. The record is 38.9 C (102.0 F) in 1926, marked on the chart; the median year is 33.3 C (91.9 F).

Hottest day (TXx) at Union 3 SSE by year
Year	Hottest day (TXx)
1894	n/a
1895	n/a
1902	16.7 C (62.1 F)
1903	36.1 C (97.0 F)
1904	33.3 C (91.9 F)
1905	27.8 C (82.0 F)
1906	33.9 C (93.0 F)
1907	32.8 C (91.0 F)
1908	31.7 C (89.1 F)
1909	32.8 C (91.0 F)
1910	35.0 C (95.0 F)
1911	35.0 C (95.0 F)
1912	32.8 C (91.0 F)
1913	36.7 C (98.1 F)
1914	35.6 C (96.1 F)
1915	32.2 C (90.0 F)
1916	32.2 C (90.0 F)
1917	33.9 C (93.0 F)
1918	33.9 C (93.0 F)
1919	37.8 C (100.0 F)
1920	32.2 C (90.0 F)
1921	33.3 C (91.9 F)
1922	33.3 C (91.9 F)
1923	33.9 C (93.0 F)
1924	33.9 C (93.0 F)
1925	36.1 C (97.0 F)
1926	38.9 C (102.0 F)
1927	33.9 C (93.0 F)
1928	34.4 C (93.9 F)
1929	33.3 C (91.9 F)
1930	37.8 C (100.0 F)
1931	35.0 C (95.0 F)
1932	37.2 C (99.0 F)
1933	36.7 C (98.1 F)
1934	35.6 C (96.1 F)
1936	36.7 C (98.1 F)
1937	33.3 C (91.9 F)
1938	32.2 C (90.0 F)
1939	34.4 C (93.9 F)
1940	34.4 C (93.9 F)
1941	35.6 C (96.1 F)
1942	34.4 C (93.9 F)
1943	35.6 C (96.1 F)
1944	35.6 C (96.1 F)
1945	33.9 C (93.0 F)
1946	34.4 C (93.9 F)
1947	34.4 C (93.9 F)
1948	34.4 C (93.9 F)
1949	33.3 C (91.9 F)
1950	31.1 C (88.0 F)
1951	33.3 C (91.9 F)
1952	36.1 C (97.0 F)
1953	37.8 C (100.0 F)
1954	38.3 C (100.9 F)
1955	35.0 C (95.0 F)
1956	32.2 C (90.0 F)
1957	33.9 C (93.0 F)
1958	32.2 C (90.0 F)
1959	34.4 C (93.9 F)
1960	33.3 C (91.9 F)
1961	31.1 C (88.0 F)
1962	32.8 C (91.0 F)
1963	32.8 C (91.0 F)
1964	33.9 C (93.0 F)
1965	34.4 C (93.9 F)
1966	33.9 C (93.0 F)
1967	31.1 C (88.0 F)
1968	33.9 C (93.0 F)
1969	32.2 C (90.0 F)
1970	33.3 C (91.9 F)
1971	31.1 C (88.0 F)
1972	31.7 C (89.1 F)
1973	32.8 C (91.0 F)
1974	30.6 C (87.1 F)
1975	30.6 C (87.1 F)
1976	31.1 C (88.0 F)
1977	32.8 C (91.0 F)
1978	32.2 C (90.0 F)
1979	32.2 C (90.0 F)
1980	33.9 C (93.0 F)
1981	31.1 C (88.0 F)
1982	31.1 C (88.0 F)
1983	35.0 C (95.0 F)
1984	31.7 C (89.1 F)
1985	31.7 C (89.1 F)
1986	32.2 C (90.0 F)
1987	34.4 C (93.9 F)
1988	35.6 C (96.1 F)
1989	32.2 C (90.0 F)
1990	32.2 C (90.0 F)
1991	33.3 C (91.9 F)
1992	31.7 C (89.1 F)
1993	35.0 C (95.0 F)
1994	33.3 C (91.9 F)
1995	32.8 C (91.0 F)
1996	32.2 C (90.0 F)
1997	32.2 C (90.0 F)
1998	33.3 C (91.9 F)
1999	34.4 C (93.9 F)
2000	32.2 C (90.0 F)
2001	32.2 C (90.0 F)
2002	33.3 C (91.9 F)
2003	32.8 C (91.0 F)
2004	31.1 C (88.0 F)
2005	32.8 C (91.0 F)
2006	33.3 C (91.9 F)
2007	30.0 C (86.0 F)
2008	n/a
2009	n/a
2010	n/a
2011	35.0 C (95.0 F)
2012	29.4 C (84.9 F)

Coldest night (TNn)

The coldest night of the year at Union 3 SSE, 1894 to 2012. The record is -37.2 C (-35.0 F) in 1917, marked on the chart; the median year is -19.4 C (-2.9 F).

Coldest night (TNn) at Union 3 SSE by year
Year	Coldest night (TNn)
1894	n/a
1895	n/a
1902	-11.7 C (10.9 F)
1903	-19.4 C (-2.9 F)
1904	-18.3 C (-0.9 F)
1905	-11.1 C (12.0 F)
1906	-16.7 C (1.9 F)
1907	-15.6 C (3.9 F)
1908	-23.3 C (-9.9 F)
1909	-18.3 C (-0.9 F)
1910	-16.7 C (1.9 F)
1911	-13.9 C (7.0 F)
1912	-24.4 C (-11.9 F)
1913	-16.7 C (1.9 F)
1914	-22.8 C (-9.0 F)
1915	-14.4 C (6.1 F)
1916	-16.7 C (1.9 F)
1917	-37.2 C (-35.0 F)
1918	-26.7 C (-16.1 F)
1919	-16.7 C (1.9 F)
1920	-17.2 C (1.0 F)
1921	-16.7 C (1.9 F)
1922	-19.4 C (-2.9 F)
1923	-16.1 C (3.0 F)
1924	-22.8 C (-9.0 F)
1925	-21.1 C (-6.0 F)
1926	-18.3 C (-0.9 F)
1927	-20.0 C (-4.0 F)
1928	-20.0 C (-4.0 F)
1929	-18.3 C (-0.9 F)
1930	-20.6 C (-5.1 F)
1931	-12.8 C (9.0 F)
1932	-21.1 C (-6.0 F)
1933	-20.0 C (-4.0 F)
1934	-21.7 C (-7.1 F)
1936	-22.2 C (-8.0 F)
1937	-18.3 C (-0.9 F)
1938	-15.6 C (3.9 F)
1939	-16.1 C (3.0 F)
1940	-17.8 C (0.0 F)
1941	-16.1 C (3.0 F)
1942	-25.0 C (-13.0 F)
1943	-20.0 C (-4.0 F)
1944	-16.7 C (1.9 F)
1945	-16.7 C (1.9 F)
1946	-18.9 C (-2.0 F)
1947	-18.9 C (-2.0 F)
1948	-24.4 C (-11.9 F)
1949	-14.4 C (6.1 F)
1950	-17.2 C (1.0 F)
1951	-19.4 C (-2.9 F)
1952	-15.6 C (3.9 F)
1953	-14.4 C (6.1 F)
1954	-15.6 C (3.9 F)
1955	-18.3 C (-0.9 F)
1956	-15.0 C (5.0 F)
1957	-21.1 C (-6.0 F)
1958	-20.0 C (-4.0 F)
1959	-22.2 C (-8.0 F)
1960	-22.8 C (-9.0 F)
1961	-21.7 C (-7.1 F)
1962	-26.1 C (-15.0 F)
1963	-26.7 C (-16.1 F)
1964	-22.2 C (-8.0 F)
1965	-23.3 C (-9.9 F)
1966	-20.0 C (-4.0 F)
1967	-19.4 C (-2.9 F)
1968	-20.6 C (-5.1 F)
1969	-20.0 C (-4.0 F)
1970	-22.2 C (-8.0 F)
1971	-18.3 C (-0.9 F)
1972	-23.9 C (-11.0 F)
1973	-17.8 C (0.0 F)
1974	-17.8 C (0.0 F)
1975	-15.0 C (5.0 F)
1976	-18.3 C (-0.9 F)
1977	-26.1 C (-15.0 F)
1978	-20.6 C (-5.1 F)
1979	-20.6 C (-5.1 F)
1980	-20.6 C (-5.1 F)
1981	-19.4 C (-2.9 F)
1982	-26.1 C (-15.0 F)
1983	-24.4 C (-11.9 F)
1984	-22.2 C (-8.0 F)
1985	-28.9 C (-20.0 F)
1986	-20.6 C (-5.1 F)
1987	-30.6 C (-23.1 F)
1988	-26.1 C (-15.0 F)
1989	-30.0 C (-22.0 F)
1990	-17.2 C (1.0 F)
1991	-16.7 C (1.9 F)
1992	-15.6 C (3.9 F)
1993	-23.9 C (-11.0 F)
1994	-27.2 C (-17.0 F)
1995	-19.4 C (-2.9 F)
1996	-32.2 C (-26.0 F)
1997	-18.9 C (-2.0 F)
1998	-13.9 C (7.0 F)
1999	-17.8 C (0.0 F)
2000	-18.3 C (-0.9 F)
2001	-12.2 C (10.0 F)
2002	-16.1 C (3.0 F)
2003	-22.8 C (-9.0 F)
2004	-21.1 C (-6.0 F)
2005	-20.6 C (-5.1 F)
2006	-16.1 C (3.0 F)
2007	-20.6 C (-5.1 F)
2008	n/a
2009	n/a
2010	n/a
2011	-15.0 C (5.0 F)
2012	-13.3 C (8.1 F)

Wettest day (Rx1day)

The wettest day of the year at Union 3 SSE, 1894 to 2012. The record is 104.1 mm (4.1 in) in 1954, marked on the chart; the median year is 49.7 mm (2.0 in).

Wettest day (Rx1day) at Union 3 SSE by year
Year	Wettest day (Rx1day)
1894	55.9 mm (2.2 in)
1895	69.9 mm (2.8 in)
1902	15.5 mm (0.6 in)
1903	46.0 mm (1.8 in)
1904	49.8 mm (2.0 in)
1905	50.8 mm (2.0 in)
1906	35.3 mm (1.4 in)
1907	39.1 mm (1.5 in)
1908	50.8 mm (2.0 in)
1909	49.5 mm (1.9 in)
1910	50.8 mm (2.0 in)
1911	39.4 mm (1.6 in)
1912	47.0 mm (1.9 in)
1913	67.3 mm (2.6 in)
1914	52.6 mm (2.1 in)
1915	57.2 mm (2.3 in)
1916	53.3 mm (2.1 in)
1917	50.8 mm (2.0 in)
1918	61.0 mm (2.4 in)
1919	57.2 mm (2.3 in)
1920	50.8 mm (2.0 in)
1921	91.4 mm (3.6 in)
1922	45.7 mm (1.8 in)
1923	76.2 mm (3.0 in)
1924	58.2 mm (2.3 in)
1925	36.8 mm (1.4 in)
1926	43.2 mm (1.7 in)
1927	40.9 mm (1.6 in)
1928	51.3 mm (2.0 in)
1929	93.0 mm (3.7 in)
1930	25.4 mm (1.0 in)
1931	54.6 mm (2.1 in)
1932	53.1 mm (2.1 in)
1933	45.5 mm (1.8 in)
1934	52.1 mm (2.1 in)
1936	61.0 mm (2.4 in)
1937	61.7 mm (2.4 in)
1938	39.4 mm (1.6 in)
1939	46.0 mm (1.8 in)
1940	76.2 mm (3.0 in)
1941	35.6 mm (1.4 in)
1942	38.1 mm (1.5 in)
1943	41.1 mm (1.6 in)
1944	47.0 mm (1.9 in)
1945	38.1 mm (1.5 in)
1946	42.2 mm (1.7 in)
1947	32.3 mm (1.3 in)
1948	37.1 mm (1.5 in)
1949	35.1 mm (1.4 in)
1950	52.1 mm (2.1 in)
1951	61.2 mm (2.4 in)
1952	52.1 mm (2.1 in)
1953	57.2 mm (2.3 in)
1954	104.1 mm (4.1 in)
1955	37.8 mm (1.5 in)
1956	37.1 mm (1.5 in)
1957	36.8 mm (1.4 in)
1958	49.0 mm (1.9 in)
1959	63.0 mm (2.5 in)
1960	39.6 mm (1.6 in)
1961	69.9 mm (2.8 in)
1962	44.7 mm (1.8 in)
1963	74.2 mm (2.9 in)
1964	39.1 mm (1.5 in)
1965	35.6 mm (1.4 in)
1966	72.4 mm (2.9 in)
1967	30.5 mm (1.2 in)
1968	59.9 mm (2.4 in)
1969	54.6 mm (2.1 in)
1970	38.1 mm (1.5 in)
1971	50.8 mm (2.0 in)
1972	50.8 mm (2.0 in)
1973	36.1 mm (1.4 in)
1974	45.7 mm (1.8 in)
1975	34.5 mm (1.4 in)
1976	50.8 mm (2.0 in)
1977	45.7 mm (1.8 in)
1978	45.5 mm (1.8 in)
1979	41.1 mm (1.6 in)
1980	57.9 mm (2.3 in)
1981	61.0 mm (2.4 in)
1982	59.9 mm (2.4 in)
1983	47.5 mm (1.9 in)
1984	44.7 mm (1.8 in)
1985	77.5 mm (3.1 in)
1986	39.9 mm (1.6 in)
1987	65.0 mm (2.6 in)
1988	61.2 mm (2.4 in)
1989	54.4 mm (2.1 in)
1990	48.8 mm (1.9 in)
1991	31.8 mm (1.3 in)
1992	42.2 mm (1.7 in)
1993	43.4 mm (1.7 in)
1994	36.6 mm (1.4 in)
1995	45.2 mm (1.8 in)
1996	59.4 mm (2.3 in)
1997	27.4 mm (1.1 in)
1998	74.9 mm (2.9 in)
1999	51.3 mm (2.0 in)
2000	42.9 mm (1.7 in)
2001	53.8 mm (2.1 in)
2002	52.3 mm (2.1 in)
2003	46.0 mm (1.8 in)
2004	64.3 mm (2.5 in)
2005	41.4 mm (1.6 in)
2006	46.2 mm (1.8 in)
2007	67.8 mm (2.7 in)
2008	40.6 mm (1.6 in)
2009	54.6 mm (2.1 in)
2010	50.0 mm (2.0 in)
2011	58.4 mm (2.3 in)
2012	44.7 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Union 3 SSE, 1894 to 2012. The record is 171.9 mm (6.8 in) in 1954, marked on the chart; the median year is 75.1 mm (3.0 in).

Wettest five days (Rx5day) at Union 3 SSE by year
Year	Wettest five days (Rx5day)
1894	87.4 mm (3.4 in)
1895	82.6 mm (3.3 in)
1902	34.7 mm (1.4 in)
1903	71.9 mm (2.8 in)
1904	62.5 mm (2.5 in)
1905	41.4 mm (1.6 in)
1906	48.6 mm (1.9 in)
1907	71.1 mm (2.8 in)
1908	78.7 mm (3.1 in)
1909	91.4 mm (3.6 in)
1910	66.8 mm (2.6 in)
1911	71.6 mm (2.8 in)
1912	97.9 mm (3.9 in)
1913	87.6 mm (3.4 in)
1914	76.5 mm (3.0 in)
1915	83.9 mm (3.3 in)
1916	72.9 mm (2.9 in)
1917	90.2 mm (3.6 in)
1918	90.3 mm (3.6 in)
1919	85.6 mm (3.4 in)
1920	97.9 mm (3.9 in)
1921	110.7 mm (4.4 in)
1922	60.4 mm (2.4 in)
1923	89.6 mm (3.5 in)
1924	62.5 mm (2.5 in)
1925	69.3 mm (2.7 in)
1926	68.8 mm (2.7 in)
1927	61.3 mm (2.4 in)
1928	62.9 mm (2.5 in)
1929	97.3 mm (3.8 in)
1930	34.0 mm (1.3 in)
1931	76.2 mm (3.0 in)
1932	58.1 mm (2.3 in)
1933	88.6 mm (3.5 in)
1934	76.7 mm (3.0 in)
1936	86.4 mm (3.4 in)
1937	80.5 mm (3.2 in)
1938	89.8 mm (3.5 in)
1939	54.1 mm (2.1 in)
1940	92.5 mm (3.6 in)
1941	33.1 mm (1.3 in)
1942	72.0 mm (2.8 in)
1943	65.3 mm (2.6 in)
1944	50.8 mm (2.0 in)
1945	92.7 mm (3.6 in)
1946	60.7 mm (2.4 in)
1947	72.0 mm (2.8 in)
1948	90.2 mm (3.6 in)
1949	70.6 mm (2.8 in)
1950	75.9 mm (3.0 in)
1951	80.1 mm (3.2 in)
1952	69.8 mm (2.7 in)
1953	63.3 mm (2.5 in)
1954	171.9 mm (6.8 in)
1955	69.9 mm (2.8 in)
1956	58.4 mm (2.3 in)
1957	96.5 mm (3.8 in)
1958	74.4 mm (2.9 in)
1959	75.4 mm (3.0 in)
1960	47.6 mm (1.9 in)
1961	132.1 mm (5.2 in)
1962	59.6 mm (2.3 in)
1963	74.7 mm (2.9 in)
1964	73.5 mm (2.9 in)
1965	69.8 mm (2.7 in)
1966	83.0 mm (3.3 in)
1967	71.6 mm (2.8 in)
1968	62.7 mm (2.5 in)
1969	72.6 mm (2.9 in)
1970	67.3 mm (2.6 in)
1971	76.0 mm (3.0 in)
1972	117.9 mm (4.6 in)
1973	70.4 mm (2.8 in)
1974	62.7 mm (2.5 in)
1975	60.0 mm (2.4 in)
1976	61.0 mm (2.4 in)
1977	93.7 mm (3.7 in)
1978	66.4 mm (2.6 in)
1979	67.9 mm (2.7 in)
1980	102.6 mm (4.0 in)
1981	81.1 mm (3.2 in)
1982	98.3 mm (3.9 in)
1983	95.5 mm (3.8 in)
1984	78.0 mm (3.1 in)
1985	105.9 mm (4.2 in)
1986	104.2 mm (4.1 in)
1987	103.9 mm (4.1 in)
1988	77.2 mm (3.0 in)
1989	92.0 mm (3.6 in)
1990	67.0 mm (2.6 in)
1991	65.5 mm (2.6 in)
1992	70.4 mm (2.8 in)
1993	50.8 mm (2.0 in)
1994	64.3 mm (2.5 in)
1995	74.7 mm (2.9 in)
1996	82.8 mm (3.3 in)
1997	48.3 mm (1.9 in)
1998	93.2 mm (3.7 in)
1999	88.9 mm (3.5 in)
2000	76.9 mm (3.0 in)
2001	98.7 mm (3.9 in)
2002	89.9 mm (3.5 in)
2003	89.2 mm (3.5 in)
2004	126.8 mm (5.0 in)
2005	44.3 mm (1.7 in)
2006	118.0 mm (4.6 in)
2007	108.5 mm (4.3 in)
2008	72.4 mm (2.9 in)
2009	83.1 mm (3.3 in)
2010	68.8 mm (2.7 in)
2011	81.6 mm (3.2 in)
2012	71.4 mm (2.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Union 3 SSE, 1894 to 2012. The record is 35 days in 1953, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Union 3 SSE by year
Year	Longest dry spell (CDD)
1894	21 days
1895	13 days
1902	7 days
1903	17 days
1904	16 days
1905	8 days
1906	20 days
1907	19 days
1908	23 days
1909	18 days
1910	25 days
1911	17 days
1912	19 days
1913	20 days
1914	25 days
1915	22 days
1916	13 days
1917	30 days
1918	28 days
1919	19 days
1920	27 days
1921	31 days
1922	24 days
1923	27 days
1924	26 days
1925	14 days
1926	16 days
1927	13 days
1928	17 days
1929	18 days
1930	17 days
1931	28 days
1932	15 days
1933	19 days
1934	21 days
1936	25 days
1937	11 days
1938	19 days
1939	24 days
1940	13 days
1941	22 days
1942	21 days
1943	23 days
1944	18 days
1945	13 days
1946	15 days
1947	15 days
1948	12 days
1949	15 days
1950	17 days
1951	27 days
1952	24 days
1953	35 days
1954	23 days
1955	24 days
1956	24 days
1957	15 days
1958	22 days
1959	27 days
1960	16 days
1961	13 days
1962	11 days
1963	29 days
1964	12 days
1965	18 days
1966	19 days
1967	15 days
1968	21 days
1969	14 days
1970	18 days
1971	16 days
1972	15 days
1973	18 days
1974	16 days
1975	17 days
1976	16 days
1977	25 days
1978	21 days
1979	16 days
1980	14 days
1981	15 days
1982	12 days
1983	16 days
1984	14 days
1985	17 days
1986	17 days
1987	19 days
1988	16 days
1989	15 days
1990	18 days
1991	24 days
1992	19 days
1993	17 days
1994	14 days
1995	20 days
1996	11 days
1997	15 days
1998	21 days
1999	21 days
2000	28 days
2001	29 days
2002	19 days
2003	13 days
2004	24 days
2005	26 days
2006	19 days
2007	15 days
2008	15 days
2009	15 days
2010	14 days
2011	14 days
2012	7 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

85 years with a frost

Across 85 years with a frost, the median last spring frost at Union 3 SSE falls on 8 May and the median first autumn frost on 2 October, which leaves a median of 146 days between them.

In 1976 to 2011 the median growing season was 146 days. That is 2 days more than in 1907 to 1948.

Fitted over all years, the growing season changes by +0.6 days per decade at this station.

Frost dates and growing season at Union 3 SSE
Measure	Median, all years	Earliest period (1907 to 1948)	Recent period (1976 to 2011)	Recent against earliest	Fitted trend
Last spring frost	8 May	9 May	9 May	no change	-0.6 days per decade
First autumn frost	2 October	3 October	2 October	1 day earlier	0.0 days per decade
Growing days	146 days	144 days	146 days	2 days more	+0.6 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

96 years, 1906 to 2011

A day with at least 48.1 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 94.5 mm (3.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Union 3 SSE: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	48.1 mm (1.9 in)
5 years	60.2 mm (2.4 in)
10 years	68.4 mm (2.7 in)
25 years	78.8 mm (3.1 in)
50 years	86.7 mm (3.4 in)
100 years	94.5 mm (3.7 in)	Longer than the 96 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, 96 years of values from 1906 to 2011.

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: 104.1 mm (4.1 in) in 1954; 93.0 mm (3.7 in) in 1929; 91.4 mm (3.6 in) in 1921.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of Union 3 SSE, at 1979. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1979 ran 0.3 C (0.5 F) higher than in the years before (possible change).

Suspected changes in the annual mean temperature at Union 3 SSE, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1979	+0.3	+0.5	possible	5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Download the Data

Data for Union 3 SSE standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Union 3 SSE 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). Records are computed by this site and are not official.

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