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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Dunn 4 NW Threshold Days by Year (USC00312500)

16 fixed thresholds counted per year at Dunn 4 NW (USC00312500): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dunn 4 NW Thresholds

  • Dunn 4 NW: days with 10 mm (0.39 in) or more of precipitation in 60 years, most in 2018 with 54.
  • Dunn 4 NW: days with 25 mm (0.98 in) or more of precipitation in 60 years, most in 2018 with 26.
  • Dunn 4 NW: nights with a minimum temperature at or below 0 C (32 F) in 59 years, most in 1980 with 95.
  • Dunn 4 NW: nights with a minimum temperature at or above 20 C (68 F) in 59 years, most in 2018 with 115.
  • 16 fixed thresholds have at least one qualifying day at Dunn 4 NW.
57 years with a qualifying day
Days at or above 30 C (86 F) per year at Dunn 4 NW Days per year at Dunn 4 NW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 137 in 2019. 0501001501963: 941964: 871965: 1021966: 741967: 611968: 961969: 681970: 1061973: 461974: 871975: 721976: 401977: 901978: 1091979: 831980: 1221983: 1041985: 851986: 1051987: 921989: 861990: 921991: 871992: 651993: 851994: 661995: 611996: 671997: 731998: 1021999: 742000: 792001: 752002: 1162003: 752004: 772005: 982006: 792007: 1142008: 862009: 822010: 1172011: 1052012: 812013: 732014: 882015: 1012016: 1042017: 1242018: 1322019: 1372020: 902021: 932022: 1002023: 842024: 932025: 151963196919771986199319992005201120172023
Days per year at Dunn 4 NW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 137 in 2019.
Days at or above 30 C (86 F) per year at Dunn 4 NW
YearDaysDecade average
19639483.1
19648783.1
196510283.1
19667483.1
19676183.1
19689683.1
19696883.1
197010679.1
19734679.1
19748779.1
19757279.1
19764079.1
19779079.1
197810979.1
19798379.1
198012299
198310499
19858599
198610599
19879299
19898699
19909277.2
19918777.2
19926577.2
19938577.2
19946677.2
19956177.2
19966777.2
19977377.2
199810277.2
19997477.2
20007988.1
20017588.1
200211688.1
20037588.1
20047788.1
20059888.1
20067988.1
200711488.1
20088688.1
20098288.1
2010117106.2
2011105106.2
201281106.2
201373106.2
201488106.2
2015101106.2
2016104106.2
2017124106.2
2018132106.2
2019137106.2
20209079.2
20219379.2
202210079.2
20238479.2
20249379.2
20251579.2
First to last qualifying date each year at Dunn 4 NW For each year, a bar from the first to the last day at Dunn 4 NW meeting 30 C (86 F). 1963: 31 March 1963 to 8 October 19631964: 19 April 1964 to 29 September 19641965: 9 April 1965 to 24 September 19651966: 2 April 1966 to 6 September 19661967: 2 April 1967 to 24 September 19671968: 4 May 1968 to 4 October 19681969: 5 May 1969 to 16 September 19691970: 21 April 1970 to 14 October 19701973: 28 May 1973 to 5 October 19731974: 1 April 1974 to 3 November 19741975: 16 May 1975 to 13 September 19751976: 15 April 1976 to 9 September 19761977: 12 April 1977 to 3 October 19771978: 1 April 1978 to 23 September 19781979: 2 April 1979 to 23 September 19791980: 23 April 1980 to 25 September 19801983: 27 April 1983 to 5 October 19831985: 29 March 1985 to 15 October 19851986: 31 March 1986 to 5 October 19861987: 30 April 1987 to 20 September 19871989: 26 April 1989 to 24 September 19891990: 13 March 1990 to 10 October 19901991: 30 April 1991 to 20 September 19911992: 25 April 1992 to 24 September 19921993: 30 May 1993 to 28 September 19931994: 29 April 1994 to 17 September 19941995: 20 April 1995 to 14 September 19951996: 4 May 1996 to 11 September 19961997: 19 May 1997 to 9 October 19971998: 17 May 1998 to 2 October 19981999: 5 April 1999 to 9 September 19992000: 7 May 2000 to 7 October 20002001: 8 April 2001 to 25 October 20012002: 15 April 2002 to 6 October 20022003: 3 May 2003 to 21 September 20032004: 21 April 2004 to 18 September 20042005: 21 April 2005 to 30 September 20052006: 15 April 2006 to 6 October 20062007: 4 April 2007 to 11 October 20072008: 28 May 2008 to 15 October 20082009: 24 April 2009 to 15 September 20092010: 2 April 2010 to 12 October 20102011: 22 May 2011 to 17 October 20112012: 17 April 2012 to 2 October 20122013: 10 April 2013 to 5 October 20132014: 2 April 2014 to 11 October 20142015: 11 May 2015 to 20 September 20152016: 16 March 2016 to 19 October 20162017: 21 March 2017 to 10 October 20172018: 10 May 2018 to 15 October 20182019: 23 April 2019 to 7 October 20192020: 20 March 2020 to 11 September 20202021: 7 April 2021 to 18 October 20212022: 25 April 2022 to 22 September 20222023: 5 April 2023 to 17 September 20232024: 29 February 2024 to 25 September 20242025: 3 April 2025 to 7 June 202519631973198319932001200920172025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Dunn 4 NW meeting 30 C (86 F).
First to last qualifying date each year at Dunn 4 NW
YearFirst dateLast date
19631963-03-311963-10-08
19641964-04-191964-09-29
19651965-04-091965-09-24
19661966-04-021966-09-06
19671967-04-021967-09-24
19681968-05-041968-10-04
19691969-05-051969-09-16
19701970-04-211970-10-14
19731973-05-281973-10-05
19741974-04-011974-11-03
19751975-05-161975-09-13
19761976-04-151976-09-09
19771977-04-121977-10-03
19781978-04-011978-09-23
19791979-04-021979-09-23
19801980-04-231980-09-25
19831983-04-271983-10-05
19851985-03-291985-10-15
19861986-03-311986-10-05
19871987-04-301987-09-20
19891989-04-261989-09-24
19901990-03-131990-10-10
19911991-04-301991-09-20
19921992-04-251992-09-24
19931993-05-301993-09-28
19941994-04-291994-09-17
19951995-04-201995-09-14
19961996-05-041996-09-11
19971997-05-191997-10-09
19981998-05-171998-10-02
19991999-04-051999-09-09
20002000-05-072000-10-07
20012001-04-082001-10-25
20022002-04-152002-10-06
20032003-05-032003-09-21
20042004-04-212004-09-18
20052005-04-212005-09-30
20062006-04-152006-10-06
20072007-04-042007-10-11
20082008-05-282008-10-15
20092009-04-242009-09-15
20102010-04-022010-10-12
20112011-05-222011-10-17
20122012-04-172012-10-02
20132013-04-102013-10-05
20142014-04-022014-10-11
20152015-05-112015-09-20
20162016-03-162016-10-19
20172017-03-212017-10-10
20182018-05-102018-10-15
20192019-04-232019-10-07
20202020-03-202020-09-11
20212021-04-072021-10-18
20222022-04-252022-09-22
20232023-04-052023-09-17
20242024-02-292024-09-25
20252025-04-032025-06-07

Every Fixed Threshold

Fixed thresholds at Dunn 4 NW
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days57137201915
35 C (95 F): Days5244198313
40 C (104 F): Days3319831
90 F (32.2 C): Days5710120191
100 F (37.8 C): Days18719834
0 C (32 F): Ice days (max39919892
0 C (32 F): Frost days (min5995198038
-10 C (14 F): Days with min361719771
-20 C (-4 F): Days with min1119851
20 C (68 F): Tropical nights (min5911520185
25 C (77 F): Days with min17420114
10 mm (0.39 in): Days with 10 mm or more rain6054201814
25 mm (0.98 in): Days with 25 mm or more rain602620182
50 mm (1.97 in): Days with 50 mm or more rain58819951
100 mm (3.94 in): Days with 100 mm or more rain17219641
10 cm (3.9 in): Days with 10 cm or more snowfall8219792

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 Dunn 4 NW 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 (2025-12-31).