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Built 2026-10-19 (19 October 2026)

Mellen 4 NE Threshold Days by Year (USC00475286)

18 fixed thresholds counted per year at Mellen 4 NE (USC00475286): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mellen 4 NE Thresholds

  • Mellen 4 NE: days with a maximum temperature at or above 30 C (86 F) in 74 years, most in 1988 with 39.
  • Mellen 4 NE: days with a maximum temperature at or below 0 C (32 F) in 74 years, most in 2013 with 119.
  • Mellen 4 NE: nights with a minimum temperature at or below 0 C (32 F) in 73 years, most in 1948 with 212.
  • Mellen 4 NE: nights with a minimum temperature at or below -10 C (14 F) in 73 years, most in 1950 with 118.
  • 18 fixed thresholds have at least one qualifying day at Mellen 4 NE.
74 years with a qualifying day
Days at or above 30 C (86 F) per year at Mellen 4 NE Days per year at Mellen 4 NE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 39 in 1988. 0102030401928: 41929: 141930: 131931: 301932: 111933: 211934: 291935: 261938: 121940: 171941: 281944: 201945: 101946: 111947: 251948: 241950: 91951: 51952: 151954: 91957: 101958: 71959: 241960: 71961: 121962: 91963: 221964: 241965: 81967: 31968: 91969: 111970: 301971: 91972: 141973: 131974: 91975: 261976: 321977: 161978: 101979: 51980: 151981: 61982: 51983: 261984: 81985: 41986: 61988: 391989: 211990: 111991: 131992: 41993: 31994: 61995: 191996: 51997: 61998: 81999: 162000: 52001: 192002: 182003: 52004: 42005: 172006: 122007: 172008: 32009: 32010: 112012: 142013: 61928193819501961197019781986199520032012
Days per year at Mellen 4 NE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 39 in 1988.
Days at or above 30 C (86 F) per year at Mellen 4 NE
YearDaysDecade average
192849
1929149
19301320.3
19313020.3
19321120.3
19332120.3
19342920.3
19352620.3
19381220.3
19401719.3
19412819.3
19442019.3
19451019.3
19461119.3
19472519.3
19482419.3
1950911.3
1951511.3
19521511.3
1954911.3
19571011.3
1958711.3
19592411.3
1960711.7
19611211.7
1962911.7
19632211.7
19642411.7
1965811.7
1967311.7
1968911.7
19691111.7
19703016.4
1971916.4
19721416.4
19731316.4
1974916.4
19752616.4
19763216.4
19771616.4
19781016.4
1979516.4
19801514.4
1981614.4
1982514.4
19832614.4
1984814.4
1985414.4
1986614.4
19883914.4
19892114.4
1990119.1
1991139.1
199249.1
199339.1
199469.1
1995199.1
199659.1
199769.1
199889.1
1999169.1
2000510.3
20011910.3
20021810.3
2003510.3
2004410.3
20051710.3
20061210.3
20071710.3
2008310.3
2009310.3
20101110.3
20121410.3
2013610.3
First to last qualifying date each year at Mellen 4 NE For each year, a bar from the first to the last day at Mellen 4 NE meeting 30 C (86 F). 1928: 7 August 1928 to 13 August 19281929: 17 June 1929 to 3 September 19291930: 5 June 1930 to 23 September 19301931: 28 May 1931 to 13 September 19311932: 14 May 1932 to 30 August 19321933: 5 June 1933 to 6 September 19331934: 6 May 1934 to 19 August 19341935: 3 July 1935 to 24 September 19351938: 21 June 1938 to 19 August 19381940: 1 June 1940 to 21 September 19401941: 4 May 1941 to 21 September 19411944: 28 May 1944 to 13 August 19441945: 21 June 1945 to 7 September 19451946: 29 May 1946 to 16 August 19461947: 5 July 1947 to 21 October 19471948: 20 May 1948 to 17 September 19481950: 23 May 1950 to 16 August 19501951: 19 July 1951 to 29 July 19511952: 27 April 1952 to 13 September 19521954: 9 June 1954 to 24 August 19541957: 2 July 1957 to 1 August 19571958: 28 June 1958 to 10 August 19581959: 2 May 1959 to 9 September 19591960: 8 July 1960 to 7 September 19601961: 11 June 1961 to 9 September 19611962: 14 May 1962 to 27 August 19621963: 4 June 1963 to 5 October 19631964: 21 May 1964 to 5 August 19641965: 27 June 1965 to 15 August 19651967: 20 July 1967 to 22 July 19671968: 15 May 1968 to 23 August 19681969: 27 May 1969 to 29 August 19691970: 30 April 1970 to 6 September 19701971: 5 June 1971 to 4 September 19711972: 18 May 1972 to 30 August 19721973: 16 June 1973 to 2 September 19731974: 22 May 1974 to 19 July 19741975: 21 May 1975 to 25 August 19751976: 7 June 1976 to 13 September 19761977: 11 April 1977 to 25 July 19771978: 19 May 1978 to 7 September 19781979: 10 July 1979 to 22 July 19791980: 22 April 1980 to 7 August 19801981: 6 July 1981 to 14 August 19811982: 6 July 1982 to 4 August 19821983: 12 June 1983 to 3 September 19831984: 13 July 1984 to 29 August 19841985: 9 June 1985 to 7 August 19851986: 29 May 1986 to 19 July 19861988: 21 May 1988 to 17 August 19881989: 20 June 1989 to 12 August 19891990: 24 April 1990 to 17 August 19901991: 14 May 1991 to 31 August 19911992: 12 June 1992 to 3 October 19921993: 11 August 1993 to 26 August 19931994: 20 May 1994 to 27 August 19941995: 17 June 1995 to 31 August 19951996: 12 June 1996 to 7 August 19961997: 23 June 1997 to 3 August 19971998: 15 May 1998 to 12 September 19981999: 30 May 1999 to 4 September 19992000: 6 May 2000 to 1 August 20002001: 16 May 2001 to 9 August 20012002: 31 May 2002 to 10 September 20022003: 27 July 2003 to 25 August 20032004: 8 June 2004 to 4 September 20042005: 24 June 2005 to 12 September 20052006: 29 May 2006 to 1 August 20062007: 11 May 2007 to 6 September 20072008: 12 July 2008 to 1 September 20082009: 21 May 2009 to 15 August 20092010: 25 May 2010 to 31 August 20102012: 9 June 2012 to 5 September 20122013: 26 June 2013 to 26 August 201319281941195719681978198919992009JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mellen 4 NE meeting 30 C (86 F).
First to last qualifying date each year at Mellen 4 NE
YearFirst dateLast date
19281928-08-071928-08-13
19291929-06-171929-09-03
19301930-06-051930-09-23
19311931-05-281931-09-13
19321932-05-141932-08-30
19331933-06-051933-09-06
19341934-05-061934-08-19
19351935-07-031935-09-24
19381938-06-211938-08-19
19401940-06-011940-09-21
19411941-05-041941-09-21
19441944-05-281944-08-13
19451945-06-211945-09-07
19461946-05-291946-08-16
19471947-07-051947-10-21
19481948-05-201948-09-17
19501950-05-231950-08-16
19511951-07-191951-07-29
19521952-04-271952-09-13
19541954-06-091954-08-24
19571957-07-021957-08-01
19581958-06-281958-08-10
19591959-05-021959-09-09
19601960-07-081960-09-07
19611961-06-111961-09-09
19621962-05-141962-08-27
19631963-06-041963-10-05
19641964-05-211964-08-05
19651965-06-271965-08-15
19671967-07-201967-07-22
19681968-05-151968-08-23
19691969-05-271969-08-29
19701970-04-301970-09-06
19711971-06-051971-09-04
19721972-05-181972-08-30
19731973-06-161973-09-02
19741974-05-221974-07-19
19751975-05-211975-08-25
19761976-06-071976-09-13
19771977-04-111977-07-25
19781978-05-191978-09-07
19791979-07-101979-07-22
19801980-04-221980-08-07
19811981-07-061981-08-14
19821982-07-061982-08-04
19831983-06-121983-09-03
19841984-07-131984-08-29
19851985-06-091985-08-07
19861986-05-291986-07-19
19881988-05-211988-08-17
19891989-06-201989-08-12
19901990-04-241990-08-17
19911991-05-141991-08-31
19921992-06-121992-10-03
19931993-08-111993-08-26
19941994-05-201994-08-27
19951995-06-171995-08-31
19961996-06-121996-08-07
19971997-06-231997-08-03
19981998-05-151998-09-12
19991999-05-301999-09-04
20002000-05-062000-08-01
20012001-05-162001-08-09
20022002-05-312002-09-10
20032003-07-272003-08-25
20042004-06-082004-09-04
20052005-06-242005-09-12
20062006-05-292006-08-01
20072007-05-112007-09-06
20082008-07-122008-09-01
20092009-05-212009-08-15
20102010-05-252010-08-31
20122012-06-092012-09-05
20132013-06-262013-08-26

Every Fixed Threshold

Fixed thresholds at Mellen 4 NE
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days743919886
35 C (95 F): Days12619884
90 F (32.2 C): Days632419881
100 F (37.8 C): Days3219341
0 C (32 F): Ice days (max741192013119
0 C (32 F): Frost days (min732121948190
-10 C (14 F): Days with min731181950109
-20 C (-4 F): Days with min7357197240
-30 C (-22 F): Days with min662019654
-40 C (-40 F): Days with min12519484
20 C (68 F): Tropical nights (min551819313
10 mm (0.39 in): Days with 10 mm or more rain7142199127
25 mm (0.98 in): Days with 25 mm or more rain711219458
50 mm (1.97 in): Days with 50 mm or more rain40420101
100 mm (3.94 in): Days with 100 mm or more rain5119321
10 cm (3.9 in): Days with 10 cm or more snowfall641519966
25 cm (9.8 in): Days with 25 cm or more snowfall33519821
50 cm (19.7 in): Days with 50 cm or more snowfall2119681

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1928.

Download the Data

  • Data for Mellen 4 NE 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).