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Built 2026-10-19 (19 October 2026)

Rock Flat (Old Post Office) Threshold Days by Year (ASN00070165)

4 fixed thresholds counted per year at Rock Flat (Old Post Office) (ASN00070165): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rock Flat (Old Post Office) Thresholds

  • Rock Flat (Old Post Office): days with 10 mm (0.39 in) or more of precipitation in 64 years, most in 2022 with 25.
  • Rock Flat (Old Post Office): days with 25 mm (0.98 in) or more of precipitation in 62 years, most in 1974 with 9.
  • Rock Flat (Old Post Office): days with 50 mm (1.97 in) or more of precipitation in 23 years, most in 1974 with 2.
  • Rock Flat (Old Post Office): days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1983 with 1.
  • 4 fixed thresholds have at least one qualifying day at Rock Flat (Old Post Office).
64 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Rock Flat (Old Post Office) Days per year at Rock Flat (Old Post Office) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 25 in 2022. 01020301963: 201964: 161965: 101966: 101967: 81968: 71969: 181970: 231971: 171972: 141973: 161974: 211975: 191976: 181977: 131978: 241979: 111980: 131981: 151982: 71983: 161984: 171985: 221986: 101987: 111988: 201989: 201990: 161991: 181992: 221993: 201994: 171995: 171996: 121997: 131998: 101999: 112000: 162001: 152002: 122003: 82004: 122005: 172006: 42007: 182008: 92009: 132010: 182011: 222012: 212013: 112014: 192015: 162016: 182017: 162018: 142019: 42020: 102021: 192022: 252023: 182024: 92025: 122026: 121963197019771984199119982005201220192026
Days per year at Rock Flat (Old Post Office) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 25 in 2022.
Days with 10 mm (0.39 in) or more of precipitation per year at Rock Flat (Old Post Office)
YearDaysDecade average
19632012.7
19641612.7
19651012.7
19661012.7
1967812.7
1968712.7
19691812.7
19702317.6
19711717.6
19721417.6
19731617.6
19742117.6
19751917.6
19761817.6
19771317.6
19782417.6
19791117.6
19801315.1
19811515.1
1982715.1
19831615.1
19841715.1
19852215.1
19861015.1
19871115.1
19882015.1
19892015.1
19901615.6
19911815.6
19922215.6
19932015.6
19941715.6
19951715.6
19961215.6
19971315.6
19981015.6
19991115.6
20001612.4
20011512.4
20021212.4
2003812.4
20041212.4
20051712.4
2006412.4
20071812.4
2008912.4
20091312.4
20101815.9
20112215.9
20122115.9
20131115.9
20141915.9
20151615.9
20161815.9
20171615.9
20181415.9
2019415.9
20201015
20211915
20222515
20231815
2024915
20251215
20261215
First to last qualifying date each year at Rock Flat (Old Post Office) For each year, a bar from the first to the last day at Rock Flat (Old Post Office) meeting 10 mm (0.39 in). 1963: 16 January 1963 to 12 December 19631964: 4 February 1964 to 23 December 19641965: 11 January 1965 to 5 December 19651966: 16 February 1966 to 31 December 19661967: 29 January 1967 to 4 October 19671968: 11 January 1968 to 26 December 19681969: 3 January 1969 to 12 December 19691970: 2 January 1970 to 29 December 19701971: 14 January 1971 to 31 December 19711972: 9 January 1972 to 24 November 19721973: 26 January 1973 to 16 December 19731974: 5 January 1974 to 27 November 19741975: 10 January 1975 to 29 December 19751976: 6 January 1976 to 24 December 19761977: 15 January 1977 to 30 September 19771978: 3 January 1978 to 14 December 19781979: 4 March 1979 to 25 November 19791980: 4 January 1980 to 17 December 19801981: 7 January 1981 to 24 December 19811982: 13 January 1982 to 29 September 19821983: 12 February 1983 to 10 December 19831984: 2 January 1984 to 29 October 19841985: 15 January 1985 to 13 December 19851986: 16 January 1986 to 6 December 19861987: 1 January 1987 to 28 December 19871988: 31 January 1988 to 26 December 19881989: 1 January 1989 to 10 December 19891990: 9 January 1990 to 11 December 19901991: 6 January 1991 to 14 December 19911992: 1 January 1992 to 23 December 19921993: 2 January 1993 to 14 December 19931994: 30 January 1994 to 23 December 19941995: 12 January 1995 to 6 December 19951996: 1 January 1996 to 26 December 19961997: 7 January 1997 to 14 December 19971998: 25 January 1998 to 14 December 19981999: 9 January 1999 to 22 November 19992000: 27 January 2000 to 27 November 20002001: 6 January 2001 to 13 November 20012002: 16 January 2002 to 30 November 20022003: 14 August 2003 to 21 December 20032004: 22 January 2004 to 14 December 20042005: 30 January 2005 to 17 December 20052006: 17 January 2006 to 7 September 20062007: 18 January 2007 to 22 December 20072008: 19 January 2008 to 13 December 20082009: 11 January 2009 to 28 December 20092010: 2 January 2010 to 20 December 20102011: 6 January 2011 to 20 December 20112012: 30 January 2012 to 28 November 20122013: 27 January 2013 to 13 November 20132014: 12 March 2014 to 23 December 20142015: 7 January 2015 to 24 December 20152016: 4 January 2016 to 30 December 20162017: 6 February 2017 to 5 December 20172018: 9 January 2018 to 22 December 20182019: 4 February 2019 to 4 November 20192020: 5 March 2020 to 17 December 20202021: 2 February 2021 to 19 December 20212022: 6 January 2022 to 12 December 20222023: 4 January 2023 to 27 December 20232024: 4 January 2024 to 7 December 20242025: 13 January 2025 to 11 September 20252026: 4 January 2026 to 2 July 202619631971197919871995200320112019JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rock Flat (Old Post Office) meeting 10 mm (0.39 in).
First to last qualifying date each year at Rock Flat (Old Post Office)
YearFirst dateLast date
19631963-01-161963-12-12
19641964-02-041964-12-23
19651965-01-111965-12-05
19661966-02-161966-12-31
19671967-01-291967-10-04
19681968-01-111968-12-26
19691969-01-031969-12-12
19701970-01-021970-12-29
19711971-01-141971-12-31
19721972-01-091972-11-24
19731973-01-261973-12-16
19741974-01-051974-11-27
19751975-01-101975-12-29
19761976-01-061976-12-24
19771977-01-151977-09-30
19781978-01-031978-12-14
19791979-03-041979-11-25
19801980-01-041980-12-17
19811981-01-071981-12-24
19821982-01-131982-09-29
19831983-02-121983-12-10
19841984-01-021984-10-29
19851985-01-151985-12-13
19861986-01-161986-12-06
19871987-01-011987-12-28
19881988-01-311988-12-26
19891989-01-011989-12-10
19901990-01-091990-12-11
19911991-01-061991-12-14
19921992-01-011992-12-23
19931993-01-021993-12-14
19941994-01-301994-12-23
19951995-01-121995-12-06
19961996-01-011996-12-26
19971997-01-071997-12-14
19981998-01-251998-12-14
19991999-01-091999-11-22
20002000-01-272000-11-27
20012001-01-062001-11-13
20022002-01-162002-11-30
20032003-08-142003-12-21
20042004-01-222004-12-14
20052005-01-302005-12-17
20062006-01-172006-09-07
20072007-01-182007-12-22
20082008-01-192008-12-13
20092009-01-112009-12-28
20102010-01-022010-12-20
20112011-01-062011-12-20
20122012-01-302012-11-28
20132013-01-272013-11-13
20142014-03-122014-12-23
20152015-01-072015-12-24
20162016-01-042016-12-30
20172017-02-062017-12-05
20182018-01-092018-12-22
20192019-02-042019-11-04
20202020-03-052020-12-17
20212021-02-022021-12-19
20222022-01-062022-12-12
20232023-01-042023-12-27
20242024-01-042024-12-07
20252025-01-132025-09-11
20262026-01-042026-07-02

Every Fixed Threshold

Fixed thresholds at Rock Flat (Old Post Office)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain6425202212
25 mm (0.98 in): Days with 25 mm or more rain62919742
50 mm (1.97 in): Days with 50 mm or more rain23219741
100 mm (3.94 in): Days with 100 mm or more rain1119831

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 Rock Flat (Old Post Office) 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 (2026-10-12).