Built 2026-10-19 (19 October 2026)

Deer Threshold Days by Year (USC00031900)

18 fixed thresholds counted per year at Deer (USC00031900): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Deer Thresholds

  • Deer: days with a maximum temperature at or above 30 C (86 F) in 36 years, most in 1980 with 81.
  • Deer: days with a maximum temperature at or below 0 C (32 F) in 36 years, most in 1978 with 47.
  • Deer: nights with a minimum temperature at or below 0 C (32 F) in 36 years, most in 1993 with 115.
  • Deer: nights with a minimum temperature at or below -10 C (14 F) in 36 years, most in 1985 with 38.
  • 18 fixed thresholds have at least one qualifying day at Deer.
36 years with a qualifying day
Days at or above 30 C (86 F) per year at Deer Days per year at Deer with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 81 in 1980. 02550751001976: 141977: 251978: 421979: 11980: 811981: 181982: 151983: 471984: 531985: 361986: 251987: 301988: 421989: 151990: 431991: 341992: 71993: 401994: 121995: 391996: 71997: 121998: 441999: 282000: 362001: 272002: 132003: 162004: 22005: 272006: 302007: 212008: 122009: 172010: 302011: 57197619801984198819921996200020042008
Days per year at Deer with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 81 in 1980.
Days at or above 30 C (86 F) per year at Deer
YearDaysDecade average
19761420.5
19772520.5
19784220.5
1979120.5
19808136.2
19811836.2
19821536.2
19834736.2
19845336.2
19853636.2
19862536.2
19873036.2
19884236.2
19891536.2
19904326.6
19913426.6
1992726.6
19934026.6
19941226.6
19953926.6
1996726.6
19971226.6
19984426.6
19992826.6
20003620.1
20012720.1
20021320.1
20031620.1
2004220.1
20052720.1
20063020.1
20072120.1
20081220.1
20091720.1
20103043.5
20115743.5
First to last qualifying date each year at Deer For each year, a bar from the first to the last day at Deer meeting 30 C (86 F). 1976: 14 July 1976 to 28 August 19761977: 5 June 1977 to 17 August 19771978: 26 June 1978 to 5 September 19781979: 5 July 1979 to 5 July 19791980: 25 June 1980 to 21 September 19801981: 11 July 1981 to 16 August 19811982: 1 July 1982 to 2 September 19821983: 20 July 1983 to 18 September 19831984: 15 June 1984 to 15 September 19841985: 6 June 1985 to 10 September 19851986: 23 June 1986 to 27 August 19861987: 20 April 1987 to 7 September 19871988: 9 June 1988 to 23 September 19881989: 28 July 1989 to 13 October 19891990: 16 June 1990 to 8 September 19901991: 22 June 1991 to 12 September 19911992: 19 June 1992 to 12 August 19921993: 12 July 1993 to 3 September 19931994: 26 June 1994 to 12 August 19941995: 8 July 1995 to 4 September 19951996: 21 June 1996 to 16 August 19961997: 3 July 1997 to 17 September 19971998: 14 June 1998 to 8 September 19981999: 24 July 1999 to 8 September 19992000: 12 July 2000 to 20 September 20002001: 7 July 2001 to 29 August 20012002: 4 July 2002 to 5 September 20022003: 19 July 2003 to 28 August 20032004: 14 July 2004 to 4 August 20042005: 28 June 2005 to 23 September 20052006: 18 April 2006 to 21 August 20062007: 4 August 2007 to 30 August 20072008: 22 July 2008 to 7 August 20082009: 18 June 2009 to 18 August 20092010: 15 June 2010 to 29 August 20102011: 5 June 2011 to 13 September 201119761981198619911996200120062011JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Deer meeting 30 C (86 F).
First to last qualifying date each year at Deer
YearFirst dateLast date
19761976-07-141976-08-28
19771977-06-051977-08-17
19781978-06-261978-09-05
19791979-07-051979-07-05
19801980-06-251980-09-21
19811981-07-111981-08-16
19821982-07-011982-09-02
19831983-07-201983-09-18
19841984-06-151984-09-15
19851985-06-061985-09-10
19861986-06-231986-08-27
19871987-04-201987-09-07
19881988-06-091988-09-23
19891989-07-281989-10-13
19901990-06-161990-09-08
19911991-06-221991-09-12
19921992-06-191992-08-12
19931993-07-121993-09-03
19941994-06-261994-08-12
19951995-07-081995-09-04
19961996-06-211996-08-16
19971997-07-031997-09-17
19981998-06-141998-09-08
19991999-07-241999-09-08
20002000-07-122000-09-20
20012001-07-072001-08-29
20022002-07-042002-09-05
20032003-07-192003-08-28
20042004-07-142004-08-04
20052005-06-282005-09-23
20062006-04-182006-08-21
20072007-08-042007-08-30
20082008-07-222008-08-07
20092009-06-182009-08-18
20102010-06-152010-08-29
20112011-06-052011-09-13

Every Fixed Threshold

Fixed thresholds at Deer
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3681198057
35 C (95 F): Days1518198012
40 C (104 F): Days1220112
90 F (32.2 C): Days2857198031
100 F (37.8 C): Days3319863
0 C (32 F): Ice days (max3647197819
0 C (32 F): Frost days (min36115199386
-10 C (14 F): Days with min3638198510
-20 C (-4 F): Days with min10719832
20 C (68 F): Tropical nights (min3668201168
25 C (77 F): Days with min10420003
10 mm (0.39 in): Days with 10 mm or more rain3660199051
25 mm (0.98 in): Days with 25 mm or more rain3628200817
50 mm (1.97 in): Days with 50 mm or more rain341120088
100 mm (3.94 in): Days with 100 mm or more rain11320041
200 mm (7.87 in): Days with 200 mm or more rain2119821
10 cm (3.9 in): Days with 10 cm or more snowfall22319962
25 cm (9.8 in): Days with 25 cm or more snowfall4119771

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1976.

Download the Data

  • Data for Deer 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).