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Built 2026-10-16 (16 October 2026)

Pierce Threshold Days by Year

15 fixed thresholds counted per year at Pierce (USC00107046): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Pierce Thresholds

  • Pierce: days with 10 cm (3.9 in) or more of snowfall in 47 years, most in 1964 with 22.
  • Pierce: days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 1970 with 49.
  • Pierce: days with a maximum temperature at or above 30 C (86 F) in 43 years, most in 2021 with 52.
  • Pierce: days with a maximum temperature at or above 90 F (32.2 C) in 43 years, most in 2021 with 33.
  • 15 fixed thresholds have at least one qualifying day at Pierce.
43 years with a qualifying day
Days at or above 30 C (86 F) per year at Pierce Days per year at Pierce with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 52 in 2021. 02040601963: 261964: 121965: 211967: 351968: 131969: 261970: 291971: 271972: 161978: 211981: 321982: 261983: 221984: 351985: 291986: 391987: 311988: 401989: 212000: 242001: 342002: 242003: 422004: 332005: 292006: 422007: 362008: 262009: 322010: 202011: 282012: 342013: 472014: 352016: 242018: 272019: 192020: 242021: 522022: 452024: 382025: 422026: 31196319691981198620012006201120182024
Days per year at Pierce with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 52 in 2021.
Days at or above 30 C (86 F) per year at Pierce
YearDaysDecade average
19632622.2
19641222.2
19652122.2
19673522.2
19681322.2
19692622.2
19702923.3
19712723.3
19721623.3
19782123.3
19813230.6
19822630.6
19832230.6
19843530.6
19852930.6
19863930.6
19873130.6
19884030.6
19892130.6
20002432.2
20013432.2
20022432.2
20034232.2
20043332.2
20052932.2
20064232.2
20073632.2
20082632.2
20093232.2
20102029.3
20112829.3
20123429.3
20134729.3
20143529.3
20162429.3
20182729.3
20191929.3
20202438.7
20215238.7
20224538.7
20243838.7
20254238.7
20263138.7
First to last qualifying date each year at Pierce For each year, a bar from the first to the last day at Pierce meeting 30 C (86 F). 1963: 16 June 1963 to 11 September 19631964: 8 July 1964 to 18 August 19641965: 11 June 1965 to 19 August 19651967: 20 June 1967 to 5 September 19671968: 4 July 1968 to 4 August 19681969: 5 June 1969 to 2 September 19691970: 4 June 1970 to 25 August 19701971: 22 June 1971 to 28 August 19711972: 30 May 1972 to 29 August 19721978: 29 June 1978 to 4 September 19781981: 26 June 1981 to 19 September 19811982: 20 June 1982 to 4 September 19821983: 28 May 1983 to 31 August 19831984: 30 May 1984 to 19 September 19841985: 19 June 1985 to 30 August 19851986: 27 May 1986 to 29 August 19861987: 28 April 1987 to 3 October 19871988: 13 May 1988 to 7 September 19881989: 30 June 1989 to 30 September 19892000: 13 July 2000 to 15 September 20002001: 13 May 2001 to 25 September 20012002: 15 June 2002 to 15 September 20022003: 25 May 2003 to 7 September 20032004: 23 June 2004 to 1 September 20042005: 21 June 2005 to 30 August 20052006: 16 May 2006 to 6 September 20062007: 3 June 2007 to 4 September 20072008: 18 May 2008 to 1 October 20082009: 25 June 2009 to 25 September 20092010: 29 June 2010 to 4 September 20102011: 23 June 2011 to 25 September 20112012: 22 June 2012 to 9 September 20122013: 17 June 2013 to 17 September 20132014: 2 July 2014 to 17 September 20142016: 5 June 2016 to 29 September 20162018: 6 July 2018 to 20 August 20182019: 13 July 2019 to 6 September 20192020: 31 May 2020 to 7 September 20202021: 3 June 2021 to 11 September 20212022: 28 June 2022 to 29 September 20222024: 23 June 2024 to 30 September 20242025: 29 May 2025 to 29 September 20252026: 13 May 2026 to 28 August 202619631970198319892005201120192026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Pierce meeting 30 C (86 F).
First to last qualifying date each year at Pierce
YearFirst dateLast date
19631963-06-161963-09-11
19641964-07-081964-08-18
19651965-06-111965-08-19
19671967-06-201967-09-05
19681968-07-041968-08-04
19691969-06-051969-09-02
19701970-06-041970-08-25
19711971-06-221971-08-28
19721972-05-301972-08-29
19781978-06-291978-09-04
19811981-06-261981-09-19
19821982-06-201982-09-04
19831983-05-281983-08-31
19841984-05-301984-09-19
19851985-06-191985-08-30
19861986-05-271986-08-29
19871987-04-281987-10-03
19881988-05-131988-09-07
19891989-06-301989-09-30
20002000-07-132000-09-15
20012001-05-132001-09-25
20022002-06-152002-09-15
20032003-05-252003-09-07
20042004-06-232004-09-01
20052005-06-212005-08-30
20062006-05-162006-09-06
20072007-06-032007-09-04
20082008-05-182008-10-01
20092009-06-252009-09-25
20102010-06-292010-09-04
20112011-06-232011-09-25
20122012-06-222012-09-09
20132013-06-172013-09-17
20142014-07-022014-09-17
20162016-06-052016-09-29
20182018-07-062018-08-20
20192019-07-132019-09-06
20202020-05-312020-09-07
20212021-06-032021-09-11
20222022-06-282022-09-29
20242024-06-232024-09-30
20252025-05-292025-09-29
20262026-05-132026-08-28

Every Fixed Threshold

Fixed thresholds at Pierce
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4352202131
35 C (95 F): Days351320225
40 C (104 F): Days1120181
90 F (32.2 C): Days4333202113
100 F (37.8 C): Days11420211
0 C (32 F): Ice days (max437119859
0 C (32 F): Frost days (min412441964120
-10 C (14 F): Days with min419119859
-20 C (-4 F): Days with min331619725
-30 C (-22 F): Days with min7219642
10 mm (0.39 in): Days with 10 mm or more rain4449197024
25 mm (0.98 in): Days with 25 mm or more rain431019648
50 mm (1.97 in): Days with 50 mm or more rain12219821
10 cm (3.9 in): Days with 10 cm or more snowfall472219642
25 cm (9.8 in): Days with 25 cm or more snowfall20419711

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1963.

Download the Data

  • Data for Pierce 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). Threshold counts are computed by this site.

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