Clayton Weather Records (USC00011725)

Record envelope, standing records and threshold days for Clayton (USC00011725), Alabama, United States, with 99 years of record.

Key Facts for Clayton

Clayton (USC00011725) is a weather station in Alabama, United States at 31.87 latitude and -85.45 longitude, 173 m (569 ft) above sea level.
The station reports from 1928 to 2026, 99 years of record.
1,464 records set at Clayton still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Clayton set a daily record precipitation of 123.2 mm (4.9 in) on 11 October 2026 (provisional).

Provisional Records

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

About the Station

Location: Alabama, United States, 31.87 latitude, -85.45 longitude.
Elevation: 173 m (569 ft).
Period of record: 1928 to 2026, 99 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

12 days at or beyond a record

The band shows the record high and record low for each calendar day at Clayton. The lines show the 2026 daily maximum and minimum. 12 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Clayton, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	27.8 C (82.0 F)	-21.1 C (-6.0 F)	25.6 C (78.1 F)	-4.4 C (24.1 F)
Feb	30.0 C (86.0 F)	-11.7 C (10.9 F)	30.0 C (86.0 F)	-5.0 C (23.0 F)
Mar	31.1 C (88.0 F)	-10.6 C (12.9 F)	29.4 C (84.9 F)	-2.8 C (27.0 F)
Apr	34.4 C (93.9 F)	-2.8 C (27.0 F)	30.6 C (87.1 F)	8.3 C (46.9 F)
May	36.7 C (98.1 F)	0.0 C (32.0 F)	32.2 C (90.0 F)	7.2 C (45.0 F)
Jun	38.9 C (102.0 F)	8.9 C (48.0 F)	34.4 C (93.9 F)	13.9 C (57.0 F)
Jul	40.0 C (104.0 F)	13.9 C (57.0 F)	35.6 C (96.1 F)	15.6 C (60.1 F)
Aug	40.6 C (105.1 F)	13.3 C (55.9 F)	36.7 C (98.1 F)	20.6 C (69.1 F)
Sep	38.9 C (102.0 F)	5.6 C (42.1 F)	37.2 C (99.0 F)	14.4 C (57.9 F)
Oct	37.2 C (99.0 F)	-2.2 C (28.0 F)	33.3 C (91.9 F)	14.4 C (57.9 F)
Nov	33.3 C (91.9 F)	-8.3 C (17.1 F)	n/a	n/a
Dec	28.9 C (84.0 F)	-20.6 C (-5.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Clayton still stand. 2000 holds the most, with 58.

Standing records at Clayton by the year they were set
Year set	Standing records
1956	14
1957	40
1958	30
1959	26
1960	8
1961	17
1962	31
1963	29
1964	21
1965	16
1966	17
1967	37
1968	13
1969	16
1970	23
1971	25
1972	21
1973	13
1974	26
1975	15
1976	20
1977	18
1978	14
1979	23
1980	23
1982	8
1983	57
1984	23
1985	31
1986	22
1987	18
1988	12
1989	32
1990	21
1991	30
1992	18
1993	21
1994	10
1995	24
1996	31
1997	32
1998	35
1999	23
2000	58
2001	22
2002	31
2003	9
2004	22
2005	23
2006	24
2010	29
2011	15
2012	12
2013	10
2014	18
2015	16
2016	22
2017	17
2018	19
2019	24
2020	20
2021	5
2022	10
2023	21
2024	18
2025	23
2026	12

All-Time Record Progression

6 new records

6 all-time records were set at Clayton between 17 March 1990 and 17 September 2020. Each dot is a new record.

When Clayton set new all-time records
Date	Kind	Detail
1990-03-17	Record daily precipitation	Record daily precipitation 284.5 mm (11.2 in)
1993-12-23	Record daily snowfall	Record daily snowfall 10.2 cm (4.0 in)
2000-07-08	Record high maximum temperature	Record high maximum temperature 39.4 C (102.9 F)
2000-07-21	Record high maximum temperature	Record high maximum temperature 40.0 C (104.0 F)
2000-08-19	Record high maximum temperature	Record high maximum temperature 40.6 C (105.1 F)
2020-09-17	Record daily precipitation	Record daily precipitation 292.1 mm (11.5 in)

Wettest Day of Each Month

Sep: 292.1 mm (11.5 in)

The wettest day on record for each calendar month at Clayton. The most was 292.1 mm (11.5 in) on 17 September 2020.

Record daily precipitation for each month at Clayton
Month	Record daily precipitation (mm)	Date
Jan	197.4 mm (7.8 in)	19 January 1936
Feb	211.8 mm (8.3 in)	17 February 1975
Mar	284.5 mm (11.2 in)	17 March 1990
Apr	116.8 mm (4.6 in)	14 April 1955
May	97.0 mm (3.8 in)	18 May 2024
Jun	108.5 mm (4.3 in)	10 June 1975
Jul	203.2 mm (8.0 in)	4 July 1994
Aug	184.7 mm (7.3 in)	1 August 1936
Sep	292.1 mm (11.5 in)	17 September 2020
Oct	204.0 mm (8.0 in)	1 October 1929
Nov	139.7 mm (5.5 in)	2 November 1997
Dec	172.2 mm (6.8 in)	24 December 2015

Period of Record Coverage

1956 to 2026

67 years of record at Clayton, 1956 to 2026. 18 years have data for under 90 percent of days and are left out of rankings: 1956, 1960, 1961, 1962, 1973, 1982, 1999, 2001 and others.

Days with data per year at Clayton
Year	Days with data	Share of year	Complete
1956	229	63%	No
1957	363	99%	Yes
1958	364	100%	Yes
1959	360	99%	Yes
1960	316	86%	No
1961	213	58%	No
1962	225	62%	No
1963	364	100%	Yes
1964	366	100%	Yes
1965	364	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	326	89%	No
1974	337	92%	Yes
1975	364	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	364	100%	Yes
1979	337	92%	Yes
1980	366	100%	Yes
1982	306	84%	No
1983	363	99%	Yes
1984	366	100%	Yes
1985	343	94%	Yes
1986	362	99%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	361	99%	Yes
1990	364	100%	Yes
1991	364	100%	Yes
1992	365	100%	Yes
1993	362	99%	Yes
1994	364	100%	Yes
1995	333	91%	Yes
1996	364	99%	Yes
1997	354	97%	Yes
1998	339	93%	Yes
1999	321	88%	No
2000	349	95%	Yes
2001	309	85%	No
2002	364	100%	Yes
2003	360	99%	Yes
2004	344	94%	Yes
2005	355	97%	Yes
2006	277	76%	No
2010	339	93%	Yes
2011	334	92%	Yes
2012	331	90%	Yes
2013	315	86%	No
2014	328	90%	No
2015	347	95%	Yes
2016	349	95%	Yes
2017	315	86%	No
2018	344	94%	Yes
2019	324	89%	No
2020	342	93%	Yes
2021	334	92%	Yes
2022	322	88%	No
2023	289	79%	No
2024	304	83%	No
2025	305	84%	No
2026	242	66%	No

Latest Records

Latest records at Clayton
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 October 2026	Clayton, US	daily rain (Provisional)	123.2 mm (4.9 in)	2.0 mm (0.08 in)	8 years	11 of 100 (Routine)
5 October 2026	Clayton, US	daily rain (Provisional)	133.3 mm (5.2 in)	56.8 mm (2.2 in)	92 years	60 of 100 (Major)
3 October 2026	Clayton, US	daily high min (Tie, Provisional)	21.7 C (71.1 F)	tie	40 years	4 of 100 (Routine)
15 September 2026	Clayton, US	daily high max (Provisional)	36.1 C (97.0 F)	0.5 C (0.9 F)	53 years	24 of 100 (Routine)
15 September 2026	Clayton, US	daily high min (Tie, Provisional)	22.8 C (73.0 F)	tie	52 years	5 of 100 (Routine)
7 September 2026	Clayton, US	daily high max (Provisional)	37.2 C (99.0 F)	1.1 C (2.0 F)	60 years	28 of 100 (Routine)
6 September 2026	Clayton, US	daily high min (Provisional)	23.3 C (73.9 F)	1.1 C (2.0 F)	23 years	16 of 100 (Routine)
5 September 2026	Clayton, US	daily high min (Provisional)	23.3 C (73.9 F)	0.5 C (0.9 F)	56 years	24 of 100 (Routine)
4 September 2026	Clayton, US	daily high max (Tie, Provisional)	36.1 C (97.0 F)	tie	67 years	6 of 100 (Routine)
4 September 2026	Clayton, US	daily high min (Tie, Provisional)	22.8 C (73.0 F)	tie	56 years	5 of 100 (Routine)
3 September 2026	Clayton, US	daily high min (Provisional)	23.3 C (73.9 F)	0.5 C (0.9 F)	32 years	17 of 100 (Routine)
14 August 2026	Clayton, US	daily high min (Tie)	24.4 C (75.9 F)	tie	27 years	3 of 100 (Routine)
25 July 2026	Clayton, US	daily high min (Tie)	23.9 C (75.0 F)	tie	39 years	4 of 100 (Routine)
4 July 2026	Clayton, US	daily low min	15.6 C (60.1 F)	0.5 C (0.9 F)	43 years	22 of 100 (Routine)
30 June 2026	Clayton, US	daily high min (Tie)	23.3 C (73.9 F)	tie	68 years	6 of 100 (Routine)
19 June 2026	Clayton, US	daily rain	50.8 mm (2.0 in)	14.7 mm (0.6 in)	33 years	28 of 100 (Routine)
30 May 2026	Clayton, US	daily high min	21.7 C (71.1 F)	0.6 C (1.1 F)	52 years	23 of 100 (Routine)
10 May 2026	Clayton, US	daily low max	20.0 C (68.0 F)	0.6 C (1.1 F)	64 years	27 of 100 (Routine)
3 May 2026	Clayton, US	daily low max	21.1 C (70.0 F)	1.1 C (2.0 F)	63 years	28 of 100 (Routine)
2 May 2026	Clayton, US	daily low max	17.8 C (64.0 F)	2.8 C (5.0 F)	45 years	28 of 100 (Routine)

Climate Trend

47 complete years, 1957 to 2023

One stripe for each of 47 complete years at Clayton, 1957 to 2023. Blue stripes are years cooler than the station's own mean of 18.1 C (64.5 F); red stripes are warmer. The coolest year was 1983, at 16.1 C (61.0 F), and the warmest was 1990, at 19.7 C (67.5 F). The strongest colour marks a difference of 2.0 C (3.6 F).

Annual mean temperature at Clayton as warming stripes, 1957 to 2023
Year	Annual mean temperature	Difference from the station mean
1957	19.4 C	+1.31 C
1958	18.4 C	+0.31 C
1959	19.0 C	+0.96 C
1963	17.5 C	-0.61 C
1964	17.7 C	-0.37 C
1965	18.3 C	+0.22 C
1966	17.5 C	-0.59 C
1967	17.8 C	-0.29 C
1968	17.4 C	-0.64 C
1969	17.3 C	-0.79 C
1970	17.6 C	-0.42 C
1971	18.0 C	-0.03 C
1972	18.3 C	+0.23 C
1975	18.2 C	+0.12 C
1976	17.1 C	-0.98 C
1977	17.6 C	-0.46 C
1978	17.4 C	-0.70 C
1980	17.5 C	-0.60 C
1983	16.1 C	-1.96 C
1984	18.0 C	-0.04 C
1986	19.1 C	+1.00 C
1987	18.4 C	+0.30 C
1988	17.8 C	-0.31 C
1989	17.7 C	-0.38 C
1990	19.7 C	+1.65 C
1991	18.8 C	+0.76 C
1992	17.8 C	-0.23 C
1993	18.0 C	-0.10 C
1994	18.2 C	+0.13 C
1996	16.6 C	-1.45 C
1997	16.8 C	-1.25 C
1998	18.5 C	+0.41 C
2000	17.5 C	-0.56 C
2002	17.7 C	-0.41 C
2003	17.3 C	-0.76 C
2004	17.3 C	-0.80 C
2005	17.4 C	-0.68 C
2010	17.9 C	-0.15 C
2011	18.6 C	+0.56 C
2012	19.0 C	+0.93 C
2014	17.7 C	-0.36 C
2015	19.3 C	+1.20 C
2016	19.6 C	+1.52 C
2018	18.9 C	+0.81 C
2019	19.6 C	+1.56 C
2021	18.6 C	+0.58 C
2023	19.5 C	+1.43 C

The fitted trend in annual mean temperature here over 1957 to 2023 is 0.12 C (0.00 to 0.25) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.22 F (-0.01 to 0.44) per decade. The slope is a straight line fitted to 47 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Clayton
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.12 C (0.00 to 0.25) per decade	0.22 F (-0.01 to 0.44) per decade	1957 to 2023	47	Not clearly different from zero
Mean daily maximum	0.2 C (0.1 to 0.3) per decade	0.4 F (0.2 to 0.6) per decade	1957 to 2023	47	Rise
Mean daily minimum	0.03 C (-0.16 to 0.21) per decade	0.05 F (-0.28 to 0.38) per decade	1957 to 2023	47	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

1928 to 2026

Yearly extremes at Clayton: 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)	2000	36.7 C (98.1 F)	67
Coldest night (TNn)	-21.1 C (-6.0 F)	1985	-8.9 C (16.0 F)	67
Wettest day (Rx1day)	292.1 mm (11.5 in)	2020	87.9 mm (3.5 in)	95
Wettest five days (Rx5day)	382.0 mm (15.0 in)	1994	137.4 mm (5.4 in)	95
Longest dry spell (CDD)	62 days	2016	23 days	95

Hottest day (TXx)

The hottest day of the year at Clayton, 1928 to 2026. The record is 40.6 C (105.1 F) in 2000, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Clayton by year
Year	Hottest day (TXx)
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	36.7 C (98.1 F)
1957	38.9 C (102.0 F)
1958	37.8 C (100.0 F)
1959	37.2 C (99.0 F)
1960	36.7 C (98.1 F)
1961	35.6 C (96.1 F)
1962	37.2 C (99.0 F)
1963	38.3 C (100.9 F)
1964	35.0 C (95.0 F)
1965	33.3 C (91.9 F)
1966	36.1 C (97.0 F)
1967	33.3 C (91.9 F)
1968	36.1 C (97.0 F)
1969	36.7 C (98.1 F)
1970	35.0 C (95.0 F)
1971	35.0 C (95.0 F)
1972	36.7 C (98.1 F)
1973	33.9 C (93.0 F)
1974	33.3 C (91.9 F)
1975	34.4 C (93.9 F)
1976	35.0 C (95.0 F)
1977	36.7 C (98.1 F)
1978	37.8 C (100.0 F)
1979	36.1 C (97.0 F)
1980	38.3 C (100.9 F)
1982	35.0 C (95.0 F)
1983	37.2 C (99.0 F)
1984	37.2 C (99.0 F)
1985	38.3 C (100.9 F)
1986	38.3 C (100.9 F)
1987	36.7 C (98.1 F)
1988	36.7 C (98.1 F)
1989	35.6 C (96.1 F)
1990	37.8 C (100.0 F)
1991	35.6 C (96.1 F)
1992	35.6 C (96.1 F)
1993	37.2 C (99.0 F)
1994	33.9 C (93.0 F)
1995	38.3 C (100.9 F)
1996	36.1 C (97.0 F)
1997	35.6 C (96.1 F)
1998	38.3 C (100.9 F)
1999	38.3 C (100.9 F)
2000	40.6 C (105.1 F)
2001	35.0 C (95.0 F)
2002	36.1 C (97.0 F)
2003	33.3 C (91.9 F)
2004	36.7 C (98.1 F)
2005	35.6 C (96.1 F)
2006	38.3 C (100.9 F)
2010	38.9 C (102.0 F)
2011	38.3 C (100.9 F)
2012	37.2 C (99.0 F)
2013	34.4 C (93.9 F)
2014	37.8 C (100.0 F)
2015	38.3 C (100.9 F)
2016	38.3 C (100.9 F)
2017	36.7 C (98.1 F)
2018	35.6 C (96.1 F)
2019	38.3 C (100.9 F)
2020	36.1 C (97.0 F)
2021	35.6 C (96.1 F)
2022	38.3 C (100.9 F)
2023	39.4 C (102.9 F)
2024	38.9 C (102.0 F)
2025	37.2 C (99.0 F)
2026	37.2 C (99.0 F)

Coldest night (TNn)

The coldest night of the year at Clayton, 1928 to 2026. The record is -21.1 C (-6.0 F) in 1985, marked on the chart; the median year is -8.9 C (16.0 F).

Coldest night (TNn) at Clayton by year
Year	Coldest night (TNn)
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	-3.9 C (25.0 F)
1957	-9.4 C (15.1 F)
1958	-11.1 C (12.0 F)
1959	-8.3 C (17.1 F)
1960	-8.9 C (16.0 F)
1961	-0.6 C (30.9 F)
1962	-15.6 C (3.9 F)
1963	-15.0 C (5.0 F)
1964	-8.9 C (16.0 F)
1965	-7.8 C (18.0 F)
1966	-15.6 C (3.9 F)
1967	-7.8 C (18.0 F)
1968	-7.8 C (18.0 F)
1969	-7.8 C (18.0 F)
1970	-13.3 C (8.1 F)
1971	-10.0 C (14.0 F)
1972	-10.6 C (12.9 F)
1973	-7.2 C (19.0 F)
1974	-3.3 C (26.1 F)
1975	-8.3 C (17.1 F)
1976	-9.4 C (15.1 F)
1977	-16.1 C (3.0 F)
1978	-8.9 C (16.0 F)
1979	-11.7 C (10.9 F)
1980	-10.6 C (12.9 F)
1982	-6.7 C (19.9 F)
1983	-15.0 C (5.0 F)
1984	-8.9 C (16.0 F)
1985	-21.1 C (-6.0 F)
1986	-11.1 C (12.0 F)
1987	-8.3 C (17.1 F)
1988	-8.9 C (16.0 F)
1989	-20.6 C (-5.1 F)
1990	-5.6 C (21.9 F)
1991	-8.9 C (16.0 F)
1992	-5.0 C (23.0 F)
1993	-7.8 C (18.0 F)
1994	-10.6 C (12.9 F)
1995	-8.3 C (17.1 F)
1996	-11.1 C (12.0 F)
1997	-10.6 C (12.9 F)
1998	-7.2 C (19.0 F)
1999	-10.6 C (12.9 F)
2000	-9.4 C (15.1 F)
2001	-10.6 C (12.9 F)
2002	-10.0 C (14.0 F)
2003	-11.7 C (10.9 F)
2004	-7.2 C (19.0 F)
2005	-9.4 C (15.1 F)
2006	-6.1 C (21.0 F)
2010	-8.9 C (16.0 F)
2011	-8.3 C (17.1 F)
2012	-5.6 C (21.9 F)
2013	-5.0 C (23.0 F)
2014	-11.7 C (10.9 F)
2015	-11.1 C (12.0 F)
2016	-5.6 C (21.9 F)
2017	-8.3 C (17.1 F)
2018	-10.0 C (14.0 F)
2019	-5.0 C (23.0 F)
2020	-5.6 C (21.9 F)
2021	-6.1 C (21.0 F)
2022	-11.1 C (12.0 F)
2023	-2.8 C (27.0 F)
2024	-9.4 C (15.1 F)
2025	-10.6 C (12.9 F)
2026	-5.0 C (23.0 F)

Wettest day (Rx1day)

The wettest day of the year at Clayton, 1928 to 2026. The record is 292.1 mm (11.5 in) in 2020, marked on the chart; the median year is 87.9 mm (3.5 in).

Wettest day (Rx1day) at Clayton by year
Year	Wettest day (Rx1day)
1928	31.2 mm (1.2 in)
1929	204.0 mm (8.0 in)
1930	102.6 mm (4.0 in)
1931	80.0 mm (3.1 in)
1932	76.7 mm (3.0 in)
1933	170.4 mm (6.7 in)
1934	108.0 mm (4.3 in)
1935	152.4 mm (6.0 in)
1936	197.4 mm (7.8 in)
1937	102.9 mm (4.1 in)
1938	108.5 mm (4.3 in)
1939	64.8 mm (2.6 in)
1940	95.8 mm (3.8 in)
1941	109.2 mm (4.3 in)
1942	65.0 mm (2.6 in)
1943	164.3 mm (6.5 in)
1944	122.9 mm (4.8 in)
1945	62.0 mm (2.4 in)
1946	92.7 mm (3.6 in)
1947	66.8 mm (2.6 in)
1948	103.6 mm (4.1 in)
1949	55.9 mm (2.2 in)
1950	35.6 mm (1.4 in)
1951	76.7 mm (3.0 in)
1952	76.2 mm (3.0 in)
1953	118.4 mm (4.7 in)
1954	92.7 mm (3.6 in)
1955	116.8 mm (4.6 in)
1956	217.2 mm (8.6 in)
1957	90.2 mm (3.6 in)
1958	63.5 mm (2.5 in)
1959	87.9 mm (3.5 in)
1960	87.6 mm (3.4 in)
1961	127.0 mm (5.0 in)
1962	76.2 mm (3.0 in)
1963	66.0 mm (2.6 in)
1964	80.0 mm (3.1 in)
1965	64.3 mm (2.5 in)
1966	64.8 mm (2.6 in)
1967	90.9 mm (3.6 in)
1968	48.3 mm (1.9 in)
1969	77.7 mm (3.1 in)
1970	81.3 mm (3.2 in)
1971	78.7 mm (3.1 in)
1972	137.7 mm (5.4 in)
1973	85.3 mm (3.4 in)
1974	70.1 mm (2.8 in)
1975	211.8 mm (8.3 in)
1976	65.0 mm (2.6 in)
1977	106.7 mm (4.2 in)
1978	97.0 mm (3.8 in)
1979	76.7 mm (3.0 in)
1980	71.4 mm (2.8 in)
1982	87.9 mm (3.5 in)
1983	89.4 mm (3.5 in)
1984	71.6 mm (2.8 in)
1985	57.4 mm (2.3 in)
1986	145.3 mm (5.7 in)
1987	55.9 mm (2.2 in)
1988	96.5 mm (3.8 in)
1989	80.8 mm (3.2 in)
1990	284.5 mm (11.2 in)
1991	87.9 mm (3.5 in)
1992	76.5 mm (3.0 in)
1993	152.9 mm (6.0 in)
1994	203.2 mm (8.0 in)
1995	144.8 mm (5.7 in)
1996	81.3 mm (3.2 in)
1997	139.7 mm (5.5 in)
1998	132.1 mm (5.2 in)
1999	110.5 mm (4.4 in)
2000	68.6 mm (2.7 in)
2001	134.6 mm (5.3 in)
2002	58.4 mm (2.3 in)
2003	76.2 mm (3.0 in)
2004	68.6 mm (2.7 in)
2005	101.6 mm (4.0 in)
2006	76.2 mm (3.0 in)
2010	102.1 mm (4.0 in)
2011	68.1 mm (2.7 in)
2012	83.1 mm (3.3 in)
2013	80.8 mm (3.2 in)
2014	106.7 mm (4.2 in)
2015	172.2 mm (6.8 in)
2016	68.6 mm (2.7 in)
2017	83.3 mm (3.3 in)
2018	121.2 mm (4.8 in)
2019	60.2 mm (2.4 in)
2020	292.1 mm (11.5 in)
2021	67.3 mm (2.6 in)
2022	67.3 mm (2.6 in)
2023	63.5 mm (2.5 in)
2024	114.3 mm (4.5 in)
2025	97.0 mm (3.8 in)
2026	133.3 mm (5.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Clayton, 1928 to 2026. The record is 382.0 mm (15.0 in) in 1994, marked on the chart; the median year is 137.4 mm (5.4 in).

Wettest five days (Rx5day) at Clayton by year
Year	Wettest five days (Rx5day)
1928	35.8 mm (1.4 in)
1929	226.3 mm (8.9 in)
1930	272.3 mm (10.7 in)
1931	89.4 mm (3.5 in)
1932	181.1 mm (7.1 in)
1933	171.4 mm (6.7 in)
1934	123.0 mm (4.8 in)
1935	259.1 mm (10.2 in)
1936	274.9 mm (10.8 in)
1937	189.7 mm (7.5 in)
1938	167.9 mm (6.6 in)
1939	180.9 mm (7.1 in)
1940	125.8 mm (5.0 in)
1941	203.2 mm (8.0 in)
1942	87.6 mm (3.4 in)
1943	180.1 mm (7.1 in)
1944	183.8 mm (7.2 in)
1945	92.0 mm (3.6 in)
1946	111.5 mm (4.4 in)
1947	141.2 mm (5.6 in)
1948	190.2 mm (7.5 in)
1949	109.2 mm (4.3 in)
1950	63.5 mm (2.5 in)
1951	102.1 mm (4.0 in)
1952	117.8 mm (4.6 in)
1953	210.0 mm (8.3 in)
1954	137.4 mm (5.4 in)
1955	144.8 mm (5.7 in)
1956	266.8 mm (10.5 in)
1957	147.4 mm (5.8 in)
1958	94.0 mm (3.7 in)
1959	125.7 mm (4.9 in)
1960	191.8 mm (7.6 in)
1961	190.5 mm (7.5 in)
1962	78.3 mm (3.1 in)
1963	125.7 mm (4.9 in)
1964	132.3 mm (5.2 in)
1965	93.1 mm (3.7 in)
1966	143.1 mm (5.6 in)
1967	172.2 mm (6.8 in)
1968	87.6 mm (3.4 in)
1969	143.5 mm (5.6 in)
1970	81.3 mm (3.2 in)
1971	124.4 mm (4.9 in)
1972	150.7 mm (5.9 in)
1973	105.4 mm (4.1 in)
1974	120.1 mm (4.7 in)
1975	260.3 mm (10.2 in)
1976	112.5 mm (4.4 in)
1977	132.6 mm (5.2 in)
1978	149.8 mm (5.9 in)
1979	107.5 mm (4.2 in)
1980	119.0 mm (4.7 in)
1982	122.9 mm (4.8 in)
1983	124.4 mm (4.9 in)
1984	170.6 mm (6.7 in)
1985	105.8 mm (4.2 in)
1986	145.3 mm (5.7 in)
1987	82.6 mm (3.3 in)
1988	96.5 mm (3.8 in)
1989	167.5 mm (6.6 in)
1990	381.0 mm (15.0 in)
1991	163.9 mm (6.5 in)
1992	159.8 mm (6.3 in)
1993	158.0 mm (6.2 in)
1994	382.0 mm (15.0 in)
1995	262.4 mm (10.3 in)
1996	119.3 mm (4.7 in)
1997	254.0 mm (10.0 in)
1998	195.6 mm (7.7 in)
1999	141.0 mm (5.6 in)
2000	111.8 mm (4.4 in)
2001	163.8 mm (6.4 in)
2002	94.0 mm (3.7 in)
2003	158.7 mm (6.2 in)
2004	88.9 mm (3.5 in)
2005	134.6 mm (5.3 in)
2006	115.6 mm (4.6 in)
2010	114.8 mm (4.5 in)
2011	104.2 mm (4.1 in)
2012	106.4 mm (4.2 in)
2013	122.4 mm (4.8 in)
2014	151.4 mm (6.0 in)
2015	358.6 mm (14.1 in)
2016	136.9 mm (5.4 in)
2017	138.2 mm (5.4 in)
2018	127.3 mm (5.0 in)
2019	92.7 mm (3.6 in)
2020	326.1 mm (12.8 in)
2021	70.6 mm (2.8 in)
2022	122.7 mm (4.8 in)
2023	127.1 mm (5.0 in)
2024	156.7 mm (6.2 in)
2025	199.7 mm (7.9 in)
2026	186.1 mm (7.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Clayton, 1928 to 2026. The record is 62 days in 2016, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Clayton by year
Year	Longest dry spell (CDD)
1928	15 days
1929	15 days
1930	24 days
1931	23 days
1932	16 days
1933	21 days
1934	19 days
1935	39 days
1936	19 days
1937	26 days
1938	18 days
1939	42 days
1940	16 days
1941	30 days
1942	32 days
1943	23 days
1944	40 days
1945	20 days
1946	22 days
1947	18 days
1948	20 days
1949	22 days
1950	31 days
1951	31 days
1952	22 days
1953	49 days
1954	36 days
1955	31 days
1956	30 days
1957	19 days
1958	26 days
1959	16 days
1960	16 days
1961	51 days
1962	30 days
1963	33 days
1964	28 days
1965	36 days
1966	26 days
1967	26 days
1968	25 days
1969	22 days
1970	31 days
1971	32 days
1972	22 days
1973	29 days
1974	26 days
1975	20 days
1976	20 days
1977	15 days
1978	39 days
1979	20 days
1980	24 days
1982	42 days
1983	20 days
1984	29 days
1985	23 days
1986	23 days
1987	34 days
1988	26 days
1989	21 days
1990	21 days
1991	19 days
1992	16 days
1993	22 days
1994	26 days
1995	23 days
1996	28 days
1997	34 days
1998	33 days
1999	19 days
2000	30 days
2001	24 days
2002	18 days
2003	15 days
2004	23 days
2005	24 days
2006	22 days
2010	16 days
2011	21 days
2012	18 days
2013	13 days
2014	16 days
2015	12 days
2016	62 days
2017	21 days
2018	18 days
2019	17 days
2020	14 days
2021	24 days
2022	30 days
2023	27 days
2024	17 days
2025	12 days
2026	17 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

47 years with a frost

Across 47 years with a frost, the median last spring frost at Clayton falls on 16 March and the median first autumn frost on 14 November, which leaves a median of 247 days between them.

Fitted over all years, the growing season changes by -0.9 days per decade at this station.

Frost dates and growing season at Clayton
Measure	Median, all years	Earliest period	Recent period (1980 to 2023)	Recent against earliest	Fitted trend
Last spring frost	16 March	n/a	16 March	n/a	+0.3 days per decade
First autumn frost	14 November	n/a	14 November	n/a	-0.7 days per decade
Growing days	247 days	n/a	248 days	n/a	-0.9 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

78 years, 1929 to 2023

A day with at least 89.4 mm (3.5 in) of rain is expected about once in 2 years. A day with at least 323.3 mm (12.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Clayton: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	89.4 mm (3.5 in)
5 years	128.2 mm (5.0 in)
10 years	161.5 mm (6.4 in)
25 years	214.5 mm (8.4 in)
50 years	263.9 mm (10.4 in)
100 years	323.3 mm (12.7 in)	Longer than the 78 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, 78 years of values from 1929 to 2023.

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: 292.1 mm (11.5 in) in 2020; 284.5 mm (11.2 in) in 1990; 217.2 mm (8.6 in) in 1956.

Station Changes

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

Climate Twins

2000 to 2023 against 1961 to 1990

Over 2000 to 2023, Clayton had a mean temperature of 18.4 C (65.1 F) and 1,324.5 mm (52.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Albany 3 SE (United States, 129 km away), Douglas (United States, 252 km away) and Montgomery AP (United States, 102 km away).

Climate twins of Clayton: stations whose 1961 to 1990 climate is closest to its 2000 to 2023 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Albany 3 SE	United States	129 km (80 mi)	18.3 C (65.0 F)	1,296.6 mm (51.0 in)	0.35
Douglas	United States	252 km (157 mi)	18.4 C (65.2 F)	1,305.7 mm (51.4 in)	0.42
Montgomery AP	United States	102 km (63 mi)	18.2 C (64.8 F)	1,357.6 mm (53.4 in)	0.45

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 Clayton standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Clayton 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).