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Built 2026-10-19 (19 October 2026)

Derr. Threshold Days by Year (USS0019E03S)

11 fixed thresholds counted per year at Derr. (USS0019E03S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Derr. Thresholds

  • Derr.: days with 10 mm (0.39 in) or more of precipitation in 45 years, most in 1983 with 46.
  • Derr.: days with a maximum temperature at or below 0 C (32 F) in 36 years, most in 2019 with 64.
  • Derr.: nights with a minimum temperature at or below 0 C (32 F) in 34 years, most in 2000 with 227.
  • Derr.: nights with a minimum temperature at or below -10 C (14 F) in 34 years, most in 2008 with 48.
  • 11 fixed thresholds have at least one qualifying day at Derr..
31 years with a qualifying day
Days at or above 30 C (86 F) per year at Derr. Days per year at Derr. with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 17 in 2017. 051015201992: 41994: 51996: 71998: 81999: 22000: 22001: 22002: 52003: 152004: 32005: 62006: 72007: 82008: 42009: 82010: 32012: 62013: 12014: 32015: 112016: 12017: 172018: 102019: 32020: 62021: 162022: 152023: 62024: 122025: 52026: 519921999200320072012201620202024
Days per year at Derr. with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 17 in 2017.
Days at or above 30 C (86 F) per year at Derr.
YearDaysDecade average
199245.2
199455.2
199675.2
199885.2
199925.2
200026
200126
200256
2003156
200436
200566
200676
200786
200846
200986
201036.1
201266.1
201316.1
201436.1
2015116.1
201616.1
2017176.1
2018106.1
201936.1
202069.3
2021169.3
2022159.3
202369.3
2024129.3
202559.3
202659.3
First to last qualifying date each year at Derr. For each year, a bar from the first to the last day at Derr. meeting 30 C (86 F). 1992: 12 August 1992 to 15 August 19921994: 21 July 1994 to 14 August 19941996: 26 July 1996 to 29 August 19961998: 26 July 1998 to 3 September 19981999: 27 July 1999 to 28 July 19992000: 3 August 2000 to 23 August 20002001: 4 July 2001 to 12 August 20012002: 26 June 2002 to 13 July 20022003: 18 July 2003 to 3 September 20032004: 24 July 2004 to 13 August 20042005: 21 July 2005 to 21 August 20052006: 21 July 2006 to 28 August 20062007: 4 July 2007 to 30 August 20072008: 5 August 2008 to 17 August 20082009: 30 July 2009 to 23 September 20092010: 25 July 2010 to 25 August 20102012: 8 July 2012 to 17 August 20122013: 1 July 2013 to 1 July 20132014: 13 July 2014 to 11 August 20142015: 26 June 2015 to 12 September 20152016: 29 July 2016 to 29 July 20162017: 19 June 2017 to 6 September 20172018: 13 July 2018 to 16 August 20182019: 6 August 2019 to 28 August 20192020: 29 July 2020 to 4 September 20202021: 21 June 2021 to 15 August 20212022: 27 June 2022 to 6 September 20222023: 16 July 2023 to 28 August 20232024: 7 July 2024 to 4 August 20242025: 8 July 2025 to 2 September 20252026: 24 July 2026 to 21 August 202619921999200320072012201620202024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Derr. meeting 30 C (86 F).
First to last qualifying date each year at Derr.
YearFirst dateLast date
19921992-08-121992-08-15
19941994-07-211994-08-14
19961996-07-261996-08-29
19981998-07-261998-09-03
19991999-07-271999-07-28
20002000-08-032000-08-23
20012001-07-042001-08-12
20022002-06-262002-07-13
20032003-07-182003-09-03
20042004-07-242004-08-13
20052005-07-212005-08-21
20062006-07-212006-08-28
20072007-07-042007-08-30
20082008-08-052008-08-17
20092009-07-302009-09-23
20102010-07-252010-08-25
20122012-07-082012-08-17
20132013-07-012013-07-01
20142014-07-132014-08-11
20152015-06-262015-09-12
20162016-07-292016-07-29
20172017-06-192017-09-06
20182018-07-132018-08-16
20192019-08-062019-08-28
20202020-07-292020-09-04
20212021-06-212021-08-15
20222022-06-272022-09-06
20232023-07-162023-08-28
20242024-07-072024-08-04
20252025-07-082025-09-02
20262026-07-242026-08-21

Every Fixed Threshold

Fixed thresholds at Derr.
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days311720175
35 C (95 F): Days2120071
90 F (32.2 C): Days16720222
0 C (32 F): Ice days (max3664201911
0 C (32 F): Frost days (min342272000108
-10 C (14 F): Days with min344820085
-20 C (-4 F): Days with min16419982
20 C (68 F): Tropical nights (min2220212
10 mm (0.39 in): Days with 10 mm or more rain454619838
25 mm (0.98 in): Days with 25 mm or more rain33519833
50 mm (1.97 in): Days with 50 mm or more rain6119821

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1992.

Download the Data

  • Data for Derr. 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 (2026-10-17).