Sidney 1SSE Weather Records (USC00137669)

Record envelope, standing records and threshold days for Sidney 1SSE (USC00137669), Iowa, United States, with 124 years of record.

Key Facts for Sidney 1SSE

Sidney 1SSE (USC00137669) is a weather station in Iowa, United States at 40.74 latitude and -95.64 longitude, 348 m (1,140 ft) above sea level.
The station reports from 1895 to 2018, 124 years of record.
1,464 records set at Sidney 1SSE still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Sidney 1SSE set a daily record low minimum temperature of -5.6 C (21.9 F) on 17 April 2018.

About the Station

Location: Iowa, United States, 40.74 latitude, -95.64 longitude.
Elevation: 348 m (1,140 ft).
Period of record: 1895 to 2018, 124 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 Sidney 1SSE. 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 Sidney 1SSE, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	20.6 C (69.1 F)	-30.0 C (-22.0 F)	n/a	n/a
Feb	27.8 C (82.0 F)	-33.3 C (-27.9 F)	n/a	n/a
Mar	32.8 C (91.0 F)	-27.2 C (-17.0 F)	n/a	n/a
Apr	35.6 C (96.1 F)	-13.3 C (8.1 F)	n/a	n/a
May	37.8 C (100.0 F)	-2.2 C (28.0 F)	n/a	n/a
Jun	40.6 C (105.1 F)	5.0 C (41.0 F)	n/a	n/a
Jul	42.8 C (109.0 F)	6.7 C (44.1 F)	n/a	n/a
Aug	39.4 C (102.9 F)	5.6 C (42.1 F)	n/a	n/a
Sep	38.9 C (102.0 F)	-2.2 C (28.0 F)	n/a	n/a
Oct	34.4 C (93.9 F)	-10.0 C (14.0 F)	n/a	n/a
Nov	28.9 C (84.0 F)	-22.8 C (-9.0 F)	n/a	n/a
Dec	22.2 C (72.0 F)	-31.7 C (-25.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Sidney 1SSE still stand. 1989 holds the most, with 46.

Standing records at Sidney 1SSE by the year they were set
Year set	Standing records
1895	45
1896	21
1897	24
1898	24
1899	14
1905	11
1906	2
1949	9
1950	27
1951	16
1952	21
1953	9
1954	24
1955	26
1956	22
1957	11
1958	16
1959	24
1960	23
1961	5
1962	31
1963	22
1964	24
1965	23
1966	28
1967	24
1968	16
1969	13
1970	22
1971	16
1972	19
1973	9
1974	24
1975	26
1976	16
1977	22
1978	9
1979	10
1980	20
1981	21
1982	9
1983	23
1984	19
1985	17
1986	20
1987	25
1988	16
1989	46
1990	21
1991	30
1992	26
1993	14
1994	15
1995	14
1996	21
1997	25
1998	29
1999	17
2000	30
2001	15
2002	17
2003	15
2004	14
2005	17
2006	14
2007	8
2008	8
2009	17
2010	8
2011	12
2012	23
2013	13
2014	36
2015	7
2016	12
2017	24
2018	18

All-Time Record Progression

5 new records

5 all-time records were set at Sidney 1SSE between 21 July 1974 and 7 January 2010. Each dot is a new record.

When Sidney 1SSE set new all-time records
Date	Kind	Detail
1974-07-21	Record high maximum temperature	Record high maximum temperature 42.8 C (109.0 F)
1983-12-19	Record low maximum temperature	Record low maximum temperature -20.6 C (-5.1 F)
1983-12-22	Record low maximum temperature	Record low maximum temperature -21.7 C (-7.1 F)
1983-12-24	Record low maximum temperature	Record low maximum temperature -22.8 C (-9.0 F)
2010-01-07	Record snow depth	Record snow depth 40.6 cm (16.0 in)

Wettest Day of Each Month

Jul: 222.3 mm (8.8 in)

The wettest day on record for each calendar month at Sidney 1SSE. The most was 222.3 mm (8.8 in) on 19 July 1965.

Record daily precipitation for each month at Sidney 1SSE
Month	Record daily precipitation (mm)	Date
Jan	31.5 mm (1.2 in)	3 January 1971
Feb	53.8 mm (2.1 in)	19 February 1954
Mar	44.2 mm (1.7 in)	31 March 1973
Apr	74.7 mm (2.9 in)	17 April 1978
May	113.8 mm (4.5 in)	26 May 1987
Jun	103.1 mm (4.1 in)	5 June 2008
Jul	222.3 mm (8.8 in)	19 July 1965
Aug	133.1 mm (5.2 in)	9 August 2015
Sep	105.7 mm (4.2 in)	9 September 1989
Oct	109.0 mm (4.3 in)	15 October 2007
Nov	56.1 mm (2.2 in)	4 November 2003
Dec	53.3 mm (2.1 in)	13 December 2015

Period of Record Coverage

1895 to 2018

77 years of record at Sidney 1SSE, 1895 to 2018. 12 years have data for under 90 percent of days and are left out of rankings: 1895, 1899, 1905, 1906, 1949, 1953, 1954, 1955 and others.

Days with data per year at Sidney 1SSE
Year	Days with data	Share of year	Complete
1895	273	75%	No
1896	352	96%	Yes
1897	351	96%	Yes
1898	349	96%	Yes
1899	52	14%	No
1905	304	83%	No
1906	59	16%	No
1949	293	80%	No
1950	363	99%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	197	54%	No
1954	321	88%	No
1955	321	88%	No
1956	291	80%	No
1957	226	62%	No
1958	359	98%	Yes
1959	365	100%	Yes
1960	364	99%	Yes
1961	335	92%	Yes
1962	334	92%	Yes
1963	365	100%	Yes
1964	364	99%	Yes
1965	363	99%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	365	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	363	99%	Yes
1979	364	100%	Yes
1980	333	91%	Yes
1981	363	99%	Yes
1982	362	99%	Yes
1983	361	99%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	362	99%	Yes
1987	363	99%	Yes
1988	364	99%	Yes
1989	361	99%	Yes
1990	351	96%	Yes
1991	362	99%	Yes
1992	358	98%	Yes
1993	364	100%	Yes
1994	365	100%	Yes
1995	346	95%	Yes
1996	365	100%	Yes
1997	365	100%	Yes
1998	363	99%	Yes
1999	362	99%	Yes
2000	366	100%	Yes
2001	364	100%	Yes
2002	365	100%	Yes
2003	364	100%	Yes
2004	366	100%	Yes
2005	365	100%	Yes
2006	361	99%	Yes
2007	364	100%	Yes
2008	364	99%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	366	100%	Yes
2013	274	75%	No
2014	364	100%	Yes
2015	363	99%	Yes
2016	365	100%	Yes
2017	365	100%	Yes
2018	120	33%	No

Latest Records

Latest records at Sidney 1SSE
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 April 2018	Sidney 1SSE, US	daily low min	-5.6 C (21.9 F)	1.7 C (3.1 F)	64 years	32 of 100 (Routine)
16 April 2018	Sidney 1SSE, US	daily low min	-5.6 C (21.9 F)	1.2 C (2.2 F)	112 years	42 of 100 (Notable)
16 April 2018	Sidney 1SSE, US	daily low max	-1.7 C (28.9 F)	5.6 C (10.1 F)	24 years	25 of 100 (Routine)
15 April 2018	Sidney 1SSE, US	daily snowfall	4.6 cm (1.8 in)	2.1 cm (0.8 in)	112 years	20 of 100 (Routine)
15 April 2018	Sidney 1SSE, US	daily snow depth	5.1 cm (2.0 in)	5.1 cm (2.0 in)	68 years	20 of 100 (Routine)
10 April 2018	Sidney 1SSE, US	daily low max	2.8 C (37.0 F)	0.5 C (0.9 F)	20 years	16 of 100 (Routine)
8 April 2018	Sidney 1SSE, US	daily low min	-10.0 C (14.0 F)	1.7 C (3.1 F)	11 years	16 of 100 (Routine)
7 April 2018	Sidney 1SSE, US	daily low max	-2.8 C (27.0 F)	3.4 C (6.1 F)	15 years	18 of 100 (Routine)
7 April 2018	Sidney 1SSE, US	daily low min	-9.4 C (15.1 F)	1.1 C (2.0 F)	11 years	15 of 100 (Routine)
5 April 2018	Sidney 1SSE, US	daily low min	-11.1 C (12.0 F)	5.0 C (9.0 F)	49 years	33 of 100 (Routine)
4 April 2018	Sidney 1SSE, US	daily low min	-11.1 C (12.0 F)	2.8 C (5.0 F)	16 years	19 of 100 (Routine)
4 April 2018	Sidney 1SSE, US	daily low max	2.2 C (36.0 F)	2.2 C (4.0 F)	16 years	17 of 100 (Routine)
3 April 2018	Sidney 1SSE, US	daily low max	-2.2 C (28.0 F)	6.6 C (11.9 F)	39 years	30 of 100 (Routine)
2 April 2018	Sidney 1SSE, US	daily low min	-9.4 C (15.1 F)	1.1 C (2.0 F)	43 years	24 of 100 (Routine)
1 April 2018	Sidney 1SSE, US	daily low min	-7.2 C (19.0 F)	0.5 C (0.9 F)	122 years	40 of 100 (Notable)
11 February 2018	Sidney 1SSE, US	daily low max (Tie)	-12.8 C (9.0 F)	tie	30 years	4 of 100 (Routine)
10 February 2018	Sidney 1SSE, US	daily snowfall	9.1 cm (3.6 in)	2.7 cm (1.1 in)	36 years	26 of 100 (Routine)
3 January 2018	Sidney 1SSE, US	daily low min	-25.6 C (-14.1 F)	1.2 C (2.2 F)	50 years	26 of 100 (Routine)
2 January 2018	Sidney 1SSE, US	daily low min	-27.8 C (-18.0 F)	4.5 C (8.1 F)	39 years	27 of 100 (Routine)
2 January 2018	Sidney 1SSE, US	daily low max	-17.8 C (0.0 F)	3.4 C (6.1 F)	39 years	25 of 100 (Routine)

Climate Trend

60 complete years, 1896 to 2017

One stripe for each of 60 complete years at Sidney 1SSE, 1896 to 2017. 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 1996, at 8.9 C (48.0 F), and the warmest was 1987, at 13.2 C (55.8 F). The strongest colour marks a difference of 2.3 C (4.1 F).

Annual mean temperature at Sidney 1SSE as warming stripes, 1896 to 2017
Year	Annual mean temperature	Difference from the station mean
1896	10.6 C	-0.34 C
1897	10.3 C	-0.67 C
1898	10.2 C	-0.79 C
1950	10.2 C	-0.82 C
1951	9.9 C	-1.04 C
1958	10.8 C	-0.17 C
1959	10.8 C	-0.14 C
1960	10.0 C	-0.96 C
1963	11.8 C	+0.86 C
1964	12.0 C	+0.99 C
1965	11.2 C	+0.27 C
1966	10.9 C	-0.09 C
1967	10.8 C	-0.15 C
1968	11.4 C	+0.47 C
1969	10.6 C	-0.37 C
1970	11.6 C	+0.60 C
1971	11.6 C	+0.67 C
1972	10.9 C	-0.06 C
1973	11.6 C	+0.67 C
1974	11.9 C	+0.93 C
1975	11.4 C	+0.40 C
1976	11.8 C	+0.82 C
1977	12.2 C	+1.19 C
1978	10.1 C	-0.83 C
1979	10.0 C	-0.96 C
1981	12.2 C	+1.21 C
1982	10.3 C	-0.72 C
1983	10.9 C	-0.09 C
1984	11.6 C	+0.65 C
1985	10.7 C	-0.32 C
1986	12.5 C	+1.49 C
1987	13.2 C	+2.23 C
1988	12.7 C	+1.71 C
1989	10.8 C	-0.20 C
1990	11.4 C	+0.39 C
1991	10.9 C	-0.04 C
1992	10.5 C	-0.45 C
1993	9.0 C	-2.00 C
1994	10.5 C	-0.48 C
1996	8.9 C	-2.09 C
1997	10.0 C	-1.01 C
1998	11.7 C	+0.74 C
1999	11.3 C	+0.29 C
2000	11.1 C	+0.13 C
2001	11.1 C	+0.08 C
2002	11.1 C	+0.11 C
2003	10.6 C	-0.42 C
2004	10.7 C	-0.32 C
2005	11.4 C	+0.39 C
2006	11.8 C	+0.79 C
2007	10.9 C	-0.06 C
2008	9.5 C	-1.44 C
2009	9.6 C	-1.33 C
2010	10.4 C	-0.58 C
2011	10.6 C	-0.33 C
2012	12.9 C	+1.88 C
2014	9.4 C	-1.58 C
2015	10.9 C	-0.09 C
2016	11.7 C	+0.77 C
2017	11.3 C	+0.30 C

The fitted trend in annual mean temperature here over 1896 to 2017 is 0.02 C (-0.07 to 0.11) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.04 F (-0.12 to 0.20) per decade. The slope is a straight line fitted to 60 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Sidney 1SSE
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.02 C (-0.07 to 0.11) per decade	0.04 F (-0.12 to 0.20) per decade	1896 to 2017	60	Not clearly different from zero
Mean daily maximum	0.04 C (-0.07 to 0.14) per decade	0.1 F (-0.1 to 0.3) per decade	1896 to 2017	60	Not clearly different from zero
Mean daily minimum	0.01 C (-0.07 to 0.09) per decade	0.02 F (-0.13 to 0.17) per decade	1896 to 2017	60	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

1895 to 2018

Yearly extremes at Sidney 1SSE: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.8 C (109.0 F)	1974	37.2 C (99.0 F)	77
Coldest night (TNn)	-33.3 C (-27.9 F)	1899	-24.4 C (-11.9 F)	77
Wettest day (Rx1day)	222.3 mm (8.8 in)	1965	67.6 mm (2.7 in)	77
Wettest five days (Rx5day)	269.3 mm (10.6 in)	1965	96.6 mm (3.8 in)	77
Longest dry spell (CDD)	58 days	1952	28 days	77

Hottest day (TXx)

The hottest day of the year at Sidney 1SSE, 1895 to 2018. The record is 42.8 C (109.0 F) in 1974, marked on the chart; the median year is 37.2 C (99.0 F).

Hottest day (TXx) at Sidney 1SSE by year
Year	Hottest day (TXx)
1895	40.0 C (104.0 F)
1896	35.6 C (96.1 F)
1897	37.8 C (100.0 F)
1898	36.7 C (98.1 F)
1899	17.2 C (63.0 F)
1905	36.1 C (97.0 F)
1906	17.8 C (64.0 F)
1949	37.2 C (99.0 F)
1950	36.7 C (98.1 F)
1951	36.1 C (97.0 F)
1952	38.3 C (100.9 F)
1953	38.9 C (102.0 F)
1954	41.7 C (107.1 F)
1955	40.6 C (105.1 F)
1956	41.1 C (106.0 F)
1957	38.9 C (102.0 F)
1958	35.0 C (95.0 F)
1959	35.0 C (95.0 F)
1960	35.0 C (95.0 F)
1961	36.1 C (97.0 F)
1962	35.0 C (95.0 F)
1963	37.2 C (99.0 F)
1964	38.9 C (102.0 F)
1965	36.1 C (97.0 F)
1966	38.9 C (102.0 F)
1967	36.7 C (98.1 F)
1968	36.7 C (98.1 F)
1969	37.8 C (100.0 F)
1970	38.9 C (102.0 F)
1971	39.4 C (102.9 F)
1972	37.2 C (99.0 F)
1973	35.0 C (95.0 F)
1974	42.8 C (109.0 F)
1975	38.9 C (102.0 F)
1976	38.3 C (100.9 F)
1977	38.9 C (102.0 F)
1978	37.2 C (99.0 F)
1979	35.6 C (96.1 F)
1980	41.1 C (106.0 F)
1981	38.3 C (100.9 F)
1982	36.7 C (98.1 F)
1983	38.3 C (100.9 F)
1984	38.3 C (100.9 F)
1985	37.8 C (100.0 F)
1986	36.1 C (97.0 F)
1987	38.9 C (102.0 F)
1988	39.4 C (102.9 F)
1989	37.8 C (100.0 F)
1990	38.3 C (100.9 F)
1991	35.6 C (96.1 F)
1992	32.2 C (90.0 F)
1993	35.6 C (96.1 F)
1994	34.4 C (93.9 F)
1995	39.4 C (102.9 F)
1996	35.6 C (96.1 F)
1997	37.8 C (100.0 F)
1998	36.7 C (98.1 F)
1999	37.2 C (99.0 F)
2000	38.9 C (102.0 F)
2001	35.6 C (96.1 F)
2002	39.4 C (102.9 F)
2003	39.4 C (102.9 F)
2004	34.4 C (93.9 F)
2005	37.2 C (99.0 F)
2006	38.3 C (100.9 F)
2007	35.6 C (96.1 F)
2008	35.6 C (96.1 F)
2009	35.6 C (96.1 F)
2010	34.4 C (93.9 F)
2011	36.1 C (97.0 F)
2012	40.0 C (104.0 F)
2013	37.2 C (99.0 F)
2014	38.9 C (102.0 F)
2015	35.6 C (96.1 F)
2016	37.2 C (99.0 F)
2017	36.1 C (97.0 F)
2018	29.4 C (84.9 F)

Coldest night (TNn)

The coldest night of the year at Sidney 1SSE, 1895 to 2018. The record is -33.3 C (-27.9 F) in 1899, marked on the chart; the median year is -24.4 C (-11.9 F).

Coldest night (TNn) at Sidney 1SSE by year
Year	Coldest night (TNn)
1895	-17.8 C (0.0 F)
1896	-22.2 C (-8.0 F)
1897	-25.0 C (-13.0 F)
1898	-23.3 C (-9.9 F)
1899	-33.3 C (-27.9 F)
1905	-19.4 C (-2.9 F)
1906	-22.2 C (-8.0 F)
1949	-25.0 C (-13.0 F)
1950	-24.4 C (-11.9 F)
1951	-25.6 C (-14.1 F)
1952	-20.0 C (-4.0 F)
1953	-22.8 C (-9.0 F)
1954	-24.4 C (-11.9 F)
1955	-24.4 C (-11.9 F)
1956	-26.1 C (-15.0 F)
1957	-15.6 C (3.9 F)
1958	-26.7 C (-16.1 F)
1959	-26.1 C (-15.0 F)
1960	-26.1 C (-15.0 F)
1961	-24.4 C (-11.9 F)
1962	-27.2 C (-17.0 F)
1963	-27.2 C (-17.0 F)
1964	-24.4 C (-11.9 F)
1965	-25.6 C (-14.1 F)
1966	-30.0 C (-22.0 F)
1967	-23.3 C (-9.9 F)
1968	-27.8 C (-18.0 F)
1969	-24.4 C (-11.9 F)
1970	-25.6 C (-14.1 F)
1971	-26.1 C (-15.0 F)
1972	-26.1 C (-15.0 F)
1973	-25.0 C (-13.0 F)
1974	-29.4 C (-20.9 F)
1975	-25.6 C (-14.1 F)
1976	-25.6 C (-14.1 F)
1977	-29.4 C (-20.9 F)
1978	-24.4 C (-11.9 F)
1979	-26.7 C (-16.1 F)
1980	-23.3 C (-9.9 F)
1981	-27.8 C (-18.0 F)
1982	-29.4 C (-20.9 F)
1983	-28.3 C (-18.9 F)
1984	-25.0 C (-13.0 F)
1985	-26.7 C (-16.1 F)
1986	-22.2 C (-8.0 F)
1987	-19.4 C (-2.9 F)
1988	-24.4 C (-11.9 F)
1989	-31.7 C (-25.1 F)
1990	-23.9 C (-11.0 F)
1991	-21.7 C (-7.1 F)
1992	-20.0 C (-4.0 F)
1993	-21.1 C (-6.0 F)
1994	-24.4 C (-11.9 F)
1995	-21.7 C (-7.1 F)
1996	-30.6 C (-23.1 F)
1997	-25.0 C (-13.0 F)
1998	-23.3 C (-9.9 F)
1999	-23.9 C (-11.0 F)
2000	-22.2 C (-8.0 F)
2001	-23.3 C (-9.9 F)
2002	-18.3 C (-0.9 F)
2003	-25.0 C (-13.0 F)
2004	-22.8 C (-9.0 F)
2005	-21.1 C (-6.0 F)
2006	-20.6 C (-5.1 F)
2007	-22.8 C (-9.0 F)
2008	-21.7 C (-7.1 F)
2009	-24.4 C (-11.9 F)
2010	-23.3 C (-9.9 F)
2011	-21.1 C (-6.0 F)
2012	-17.8 C (0.0 F)
2013	-21.7 C (-7.1 F)
2014	-25.0 C (-13.0 F)
2015	-21.1 C (-6.0 F)
2016	-25.0 C (-13.0 F)
2017	-24.4 C (-11.9 F)
2018	-27.8 C (-18.0 F)

Wettest day (Rx1day)

The wettest day of the year at Sidney 1SSE, 1895 to 2018. The record is 222.3 mm (8.8 in) in 1965, marked on the chart; the median year is 67.6 mm (2.7 in).

Wettest day (Rx1day) at Sidney 1SSE by year
Year	Wettest day (Rx1day)
1895	57.4 mm (2.3 in)
1896	131.1 mm (5.2 in)
1897	59.7 mm (2.4 in)
1898	152.4 mm (6.0 in)
1899	11.9 mm (0.5 in)
1905	91.2 mm (3.6 in)
1906	7.6 mm (0.30 in)
1949	55.9 mm (2.2 in)
1950	107.2 mm (4.2 in)
1951	52.1 mm (2.1 in)
1952	53.3 mm (2.1 in)
1953	28.7 mm (1.1 in)
1954	68.6 mm (2.7 in)
1955	46.5 mm (1.8 in)
1956	41.4 mm (1.6 in)
1957	48.3 mm (1.9 in)
1958	78.7 mm (3.1 in)
1959	96.5 mm (3.8 in)
1960	71.6 mm (2.8 in)
1961	42.7 mm (1.7 in)
1962	101.9 mm (4.0 in)
1963	65.8 mm (2.6 in)
1964	55.6 mm (2.2 in)
1965	222.3 mm (8.8 in)
1966	70.9 mm (2.8 in)
1967	56.9 mm (2.2 in)
1968	97.8 mm (3.9 in)
1969	68.8 mm (2.7 in)
1970	34.0 mm (1.3 in)
1971	50.5 mm (2.0 in)
1972	94.5 mm (3.7 in)
1973	80.3 mm (3.2 in)
1974	83.3 mm (3.3 in)
1975	47.5 mm (1.9 in)
1976	67.8 mm (2.7 in)
1977	109.7 mm (4.3 in)
1978	74.7 mm (2.9 in)
1979	57.4 mm (2.3 in)
1980	32.5 mm (1.3 in)
1981	50.3 mm (2.0 in)
1982	75.2 mm (3.0 in)
1983	44.5 mm (1.8 in)
1984	50.0 mm (2.0 in)
1985	61.7 mm (2.4 in)
1986	132.1 mm (5.2 in)
1987	113.8 mm (4.5 in)
1988	45.7 mm (1.8 in)
1989	105.7 mm (4.2 in)
1990	180.3 mm (7.1 in)
1991	114.6 mm (4.5 in)
1992	127.0 mm (5.0 in)
1993	103.9 mm (4.1 in)
1994	82.0 mm (3.2 in)
1995	32.8 mm (1.3 in)
1996	81.8 mm (3.2 in)
1997	81.3 mm (3.2 in)
1998	70.1 mm (2.8 in)
1999	72.4 mm (2.9 in)
2000	50.3 mm (2.0 in)
2001	52.8 mm (2.1 in)
2002	67.6 mm (2.7 in)
2003	56.1 mm (2.2 in)
2004	50.5 mm (2.0 in)
2005	43.9 mm (1.7 in)
2006	55.9 mm (2.2 in)
2007	109.0 mm (4.3 in)
2008	103.1 mm (4.1 in)
2009	45.2 mm (1.8 in)
2010	61.0 mm (2.4 in)
2011	41.1 mm (1.6 in)
2012	68.3 mm (2.7 in)
2013	54.4 mm (2.1 in)
2014	59.7 mm (2.4 in)
2015	133.1 mm (5.2 in)
2016	95.5 mm (3.8 in)
2017	83.3 mm (3.3 in)
2018	7.6 mm (0.30 in)

Wettest five days (Rx5day)

The wettest five days of the year at Sidney 1SSE, 1895 to 2018. The record is 269.3 mm (10.6 in) in 1965, marked on the chart; the median year is 96.6 mm (3.8 in).

Wettest five days (Rx5day) at Sidney 1SSE by year
Year	Wettest five days (Rx5day)
1895	91.2 mm (3.6 in)
1896	144.8 mm (5.7 in)
1897	101.4 mm (4.0 in)
1898	81.3 mm (3.2 in)
1899	2.5 mm (0.10 in)
1905	153.7 mm (6.1 in)
1906	12.7 mm (0.5 in)
1949	80.3 mm (3.2 in)
1950	135.1 mm (5.3 in)
1951	92.0 mm (3.6 in)
1952	88.7 mm (3.5 in)
1953	67.3 mm (2.6 in)
1954	73.5 mm (2.9 in)
1955	57.4 mm (2.3 in)
1956	86.3 mm (3.4 in)
1957	84.1 mm (3.3 in)
1958	107.0 mm (4.2 in)
1959	105.4 mm (4.1 in)
1960	99.6 mm (3.9 in)
1961	72.9 mm (2.9 in)
1962	144.0 mm (5.7 in)
1963	84.6 mm (3.3 in)
1964	113.2 mm (4.5 in)
1965	269.3 mm (10.6 in)
1966	100.6 mm (4.0 in)
1967	99.8 mm (3.9 in)
1968	129.5 mm (5.1 in)
1969	107.4 mm (4.2 in)
1970	63.8 mm (2.5 in)
1971	116.8 mm (4.6 in)
1972	116.1 mm (4.6 in)
1973	143.6 mm (5.7 in)
1974	101.6 mm (4.0 in)
1975	66.3 mm (2.6 in)
1976	95.0 mm (3.7 in)
1977	229.1 mm (9.0 in)
1978	140.2 mm (5.5 in)
1979	92.4 mm (3.6 in)
1980	60.5 mm (2.4 in)
1981	72.2 mm (2.8 in)
1982	170.8 mm (6.7 in)
1983	78.7 mm (3.1 in)
1984	112.5 mm (4.4 in)
1985	98.5 mm (3.9 in)
1986	166.4 mm (6.6 in)
1987	197.4 mm (7.8 in)
1988	69.6 mm (2.7 in)
1989	168.7 mm (6.6 in)
1990	186.6 mm (7.3 in)
1991	123.4 mm (4.9 in)
1992	163.3 mm (6.4 in)
1993	228.1 mm (9.0 in)
1994	102.8 mm (4.0 in)
1995	62.8 mm (2.5 in)
1996	148.6 mm (5.9 in)
1997	91.0 mm (3.6 in)
1998	106.2 mm (4.2 in)
1999	91.8 mm (3.6 in)
2000	91.4 mm (3.6 in)
2001	67.2 mm (2.6 in)
2002	165.3 mm (6.5 in)
2003	89.4 mm (3.5 in)
2004	79.7 mm (3.1 in)
2005	76.1 mm (3.0 in)
2006	96.6 mm (3.8 in)
2007	161.8 mm (6.4 in)
2008	144.7 mm (5.7 in)
2009	65.0 mm (2.6 in)
2010	78.3 mm (3.1 in)
2011	69.6 mm (2.7 in)
2012	83.0 mm (3.3 in)
2013	92.5 mm (3.6 in)
2014	94.2 mm (3.7 in)
2015	178.8 mm (7.0 in)
2016	95.5 mm (3.8 in)
2017	123.4 mm (4.9 in)
2018	15.2 mm (0.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Sidney 1SSE, 1895 to 2018. The record is 58 days in 1952, marked on the chart; the median year is 28 days.

Longest dry spell (CDD) at Sidney 1SSE by year
Year	Longest dry spell (CDD)
1895	29 days
1896	24 days
1897	23 days
1898	26 days
1899	17 days
1905	29 days
1906	28 days
1949	51 days
1950	29 days
1951	17 days
1952	58 days
1953	27 days
1954	49 days
1955	29 days
1956	37 days
1957	36 days
1958	45 days
1959	21 days
1960	23 days
1961	30 days
1962	25 days
1963	31 days
1964	21 days
1965	27 days
1966	25 days
1967	29 days
1968	43 days
1969	24 days
1970	43 days
1971	30 days
1972	39 days
1973	33 days
1974	23 days
1975	32 days
1976	37 days
1977	26 days
1978	23 days
1979	35 days
1980	28 days
1981	30 days
1982	18 days
1983	24 days
1984	34 days
1985	22 days
1986	33 days
1987	21 days
1988	35 days
1989	36 days
1990	24 days
1991	22 days
1992	22 days
1993	22 days
1994	22 days
1995	29 days
1996	26 days
1997	15 days
1998	29 days
1999	25 days
2000	28 days
2001	18 days
2002	56 days
2003	21 days
2004	25 days
2005	29 days
2006	34 days
2007	42 days
2008	22 days
2009	17 days
2010	47 days
2011	20 days
2012	27 days
2013	16 days
2014	33 days
2015	46 days
2016	40 days
2017	28 days
2018	16 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

60 years with a frost

Across 60 years with a frost, the median last spring frost at Sidney 1SSE falls on 17 April and the median first autumn frost on 16 October, which leaves a median of 182 days between them.

In 1986 to 2017 the median growing season was 184 days. That is 7 days more than in 1896 to 1985.

Fitted over all years, the growing season changes by +1.2 days per decade at this station.

Frost dates and growing season at Sidney 1SSE
Measure	Median, all years	Earliest period (1896 to 1985)	Recent period (1986 to 2017)	Recent against earliest	Fitted trend
Last spring frost	17 April	19 April	16 April	3 days earlier	-0.3 days per decade
First autumn frost	16 October	14 October	19 October	5 days later	+0.9 days per decade
Growing days	182 days	177 days	184 days	7 days more	+1.2 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

64 years, 1896 to 2017

A day with at least 70.4 mm (2.8 in) of rain is expected about once in 2 years. A day with at least 212.6 mm (8.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Sidney 1SSE: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	70.4 mm (2.8 in)
5 years	101.0 mm (4.0 in)
10 years	123.9 mm (4.9 in)
25 years	156.4 mm (6.2 in)
50 years	183.3 mm (7.2 in)
100 years	212.6 mm (8.4 in)	Longer than the 64 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, 64 years of values from 1896 to 2017.

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: 222.3 mm (8.8 in) in 1965; 180.3 mm (7.1 in) in 1990; 152.4 mm (6.0 in) in 1898.

Station Changes

3 suspected

3 changes were suspected in the annual mean temperature of Sidney 1SSE, at 1984, 1990 and 2010. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1984 ran 0.3 C (0.6 F) higher than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1990 ran 0.7 C (1.2 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 2010 ran 0.3 C (0.5 F) lower than in the years before (possible change).

Suspected changes in the annual mean temperature at Sidney 1SSE, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1984	+0.3	+0.6	possible	5
1990	-0.7	-1.2	likely	5
2010	-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.

Climate Twins

2002 to 2017 against 1961 to 1990

Over 2002 to 2017, Sidney 1SSE had a mean temperature of 10.8 C (51.5 F) and 825.4 mm (32.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Princeton (United States, 178 km away), Spickard 7 W (United States, 172 km away) and Hamilton 2W (United States, 176 km away).

Climate twins of Sidney 1SSE: stations whose 1961 to 1990 climate is closest to its 2002 to 2017 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Princeton	United States	178 km (111 mi)	10.9 C (51.6 F)	876.6 mm (34.5 in)	0.42
Spickard 7 W	United States	172 km (107 mi)	11.0 C (51.7 F)	916.4 mm (36.1 in)	0.46
Hamilton 2W	United States	176 km (109 mi)	11.0 C (51.8 F)	888.8 mm (35.0 in)	0.46

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 Sidney 1SSE standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sidney 1SSE 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).