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Built 2026-10-19 (19 October 2026)

Clayton Threshold Days by Year (USC00011725)

17 fixed thresholds counted per year at Clayton (USC00011725): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Clayton Thresholds

  • Clayton: days with 10 mm (0.39 in) or more of precipitation in 79 years, most in 1947 with 60.
  • Clayton: days with 25 mm (0.98 in) or more of precipitation in 79 years, most in 1947 with 28.
  • Clayton: days with 50 mm (1.97 in) or more of precipitation in 77 years, most in 1936 with 16.
  • Clayton: days with a maximum temperature at or above 30 C (86 F) in 50 years, most in 2016 with 149.
  • 17 fixed thresholds have at least one qualifying day at Clayton.
50 years with a qualifying day
Days at or above 30 C (86 F) per year at Clayton Days per year at Clayton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 149 in 2016. 0501001501957: 1251958: 1391959: 1421963: 1011964: 711965: 961966: 711967: 651968: 981969: 861970: 1011971: 1251972: 1151974: 731975: 1001976: 751977: 1141978: 1141979: 741980: 1131983: 991984: 1101985: 1201986: 1311987: 1211988: 991989: 881990: 1311991: 1021992: 931993: 1171994: 841995: 1191996: 1201997: 931998: 1182000: 1262002: 1312003: 952004: 1062005: 1032010: 1272011: 1252012: 842015: 1212016: 1492018: 1312020: 1132021: 962026: 1121957196519701976198319881993199820052016
Days per year at Clayton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 149 in 2016.
Days at or above 30 C (86 F) per year at Clayton
YearDaysDecade average
1957125135.3
1958139135.3
1959142135.3
196310184
19647184
19659684
19667184
19676584
19689884
19698684
197010199
197112599
197211599
19747399
197510099
19767599
197711499
197811499
19797499
1980113110.1
198399110.1
1984110110.1
1985120110.1
1986131110.1
1987121110.1
198899110.1
198988110.1
1990131108.6
1991102108.6
199293108.6
1993117108.6
199484108.6
1995119108.6
1996120108.6
199793108.6
1998118108.6
2000126112.2
2002131112.2
200395112.2
2004106112.2
2005103112.2
2010127122.8
2011125122.8
201284122.8
2015121122.8
2016149122.8
2018131122.8
2020113107
202196107
2026112107
First to last qualifying date each year at Clayton For each year, a bar from the first to the last day at Clayton meeting 30 C (86 F). 1957: 19 April 1957 to 23 September 19571958: 18 April 1958 to 10 October 19581959: 7 April 1959 to 13 October 19591963: 19 March 1963 to 22 October 19631964: 19 May 1964 to 1 October 19641965: 10 April 1965 to 25 September 19651966: 26 April 1966 to 13 October 19661967: 13 March 1967 to 8 October 19671968: 17 May 1968 to 4 October 19681969: 22 May 1969 to 19 September 19691970: 23 April 1970 to 4 October 19701971: 12 April 1971 to 3 November 19711972: 16 April 1972 to 19 October 19721974: 11 March 1974 to 22 September 19741975: 21 May 1975 to 17 October 19751976: 20 April 1976 to 21 September 19761977: 18 April 1977 to 29 September 19771978: 5 April 1978 to 6 October 19781979: 12 April 1979 to 10 October 19791980: 24 April 1980 to 19 October 19801983: 7 May 1983 to 6 October 19831984: 7 May 1984 to 29 October 19841985: 19 April 1985 to 26 October 19851986: 5 April 1986 to 9 October 19861987: 15 April 1987 to 2 October 19871988: 6 April 1988 to 27 September 19881989: 29 March 1989 to 17 October 19891990: 1 May 1990 to 18 October 19901991: 27 March 1991 to 25 September 19911992: 24 April 1992 to 23 September 19921993: 7 May 1993 to 22 October 19931994: 28 March 1994 to 1 October 19941995: 24 March 1995 to 4 October 19951996: 29 April 1996 to 30 October 19961997: 19 May 1997 to 14 October 19971998: 9 May 1998 to 20 October 19982000: 4 May 2000 to 6 October 20002002: 18 April 2002 to 13 October 20022003: 3 May 2003 to 27 September 20032004: 21 March 2004 to 5 October 20042005: 13 May 2005 to 21 October 20052010: 6 April 2010 to 28 October 20102011: 10 April 2011 to 18 October 20112012: 20 March 2012 to 29 September 20122015: 9 April 2015 to 16 October 20152016: 16 March 2016 to 5 November 20162018: 8 May 2018 to 17 October 20182020: 15 March 2020 to 8 October 20202021: 14 April 2021 to 3 October 20212026: 21 February 2026 to 15 October 202619571967197519841991199820112026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Clayton meeting 30 C (86 F).
First to last qualifying date each year at Clayton
YearFirst dateLast date
19571957-04-191957-09-23
19581958-04-181958-10-10
19591959-04-071959-10-13
19631963-03-191963-10-22
19641964-05-191964-10-01
19651965-04-101965-09-25
19661966-04-261966-10-13
19671967-03-131967-10-08
19681968-05-171968-10-04
19691969-05-221969-09-19
19701970-04-231970-10-04
19711971-04-121971-11-03
19721972-04-161972-10-19
19741974-03-111974-09-22
19751975-05-211975-10-17
19761976-04-201976-09-21
19771977-04-181977-09-29
19781978-04-051978-10-06
19791979-04-121979-10-10
19801980-04-241980-10-19
19831983-05-071983-10-06
19841984-05-071984-10-29
19851985-04-191985-10-26
19861986-04-051986-10-09
19871987-04-151987-10-02
19881988-04-061988-09-27
19891989-03-291989-10-17
19901990-05-011990-10-18
19911991-03-271991-09-25
19921992-04-241992-09-23
19931993-05-071993-10-22
19941994-03-281994-10-01
19951995-03-241995-10-04
19961996-04-291996-10-30
19971997-05-191997-10-14
19981998-05-091998-10-20
20002000-05-042000-10-06
20022002-04-182002-10-13
20032003-05-032003-09-27
20042004-03-212004-10-05
20052005-05-132005-10-21
20102010-04-062010-10-28
20112011-04-102011-10-18
20122012-03-202012-09-29
20152015-04-092015-10-16
20162016-03-162016-11-05
20182018-05-082018-10-17
20202020-03-152020-10-08
20212021-04-142021-10-03
20262026-02-212026-10-15

Every Fixed Threshold

Fixed thresholds at Clayton
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days501492016112
35 C (95 F): Days4462201127
40 C (104 F): Days1520005
90 F (32.2 C): Days50115201676
100 F (37.8 C): Days151520002
0 C (32 F): Ice days (max19419851
0 C (32 F): Frost days (min4785199624
-10 C (14 F): Days with min20719961
-20 C (-4 F): Days with min2119851
20 C (68 F): Tropical nights (min471242018100
25 C (77 F): Days with min1119781
10 mm (0.39 in): Days with 10 mm or more rain7960194741
25 mm (0.98 in): Days with 25 mm or more rain7928194710
50 mm (1.97 in): Days with 50 mm or more rain771619365
100 mm (3.94 in): Days with 100 mm or more rain32319292
200 mm (7.87 in): Days with 200 mm or more rain6119291
10 cm (3.9 in): Days with 10 cm or more snowfall1119931

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1957.

Download the Data

  • 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).