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Built 2026-10-17 (17 October 2026)

Derby Aero Threshold Days by Year

14 fixed thresholds counted per year at Derby Aero (ASN00003032): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Derby Aero Thresholds

  • Derby Aero: days with 10 mm (0.39 in) or more of precipitation in 59 years, most in 1974 with 34.
  • Derby Aero: days with 25 mm (0.98 in) or more of precipitation in 58 years, most in 2000 with 18.
  • Derby Aero: days with 50 mm (1.97 in) or more of precipitation in 55 years, most in 2020 with 8.
  • Derby Aero: nights with a minimum temperature at or above 20 C (68 F) in 40 years, most in 2016 with 287.
  • 14 fixed thresholds have at least one qualifying day at Derby Aero.
38 years with a qualifying day
Days at or above 30 C (86 F) per year at Derby Aero Days per year at Derby Aero with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 349 in 2021. 01002003004001973: 3451974: 3081975: 3381976: 3141977: 3191978: 2901979: 3291980: 3471995: 3191997: 2941998: 3121999: 3232000: 3102001: 3282002: 3262003: 3482004: 3192005: 3442006: 3252007: 3262008: 3412009: 3412010: 3242011: 3192012: 3152013: 3252014: 3362015: 3452016: 3482017: 3452019: 3452020: 3402021: 3492022: 3362023: 3242024: 3492025: 3302026: 1731973197719952000200420082012201620212025
Days per year at Derby Aero with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 349 in 2021.
Days at or above 30 C (86 F) per year at Derby Aero
YearDaysDecade average
1973345320.4
1974308320.4
1975338320.4
1976314320.4
1977319320.4
1978290320.4
1979329320.4
1980347347
1995319312
1997294312
1998312312
1999323312
2000310330.8
2001328330.8
2002326330.8
2003348330.8
2004319330.8
2005344330.8
2006325330.8
2007326330.8
2008341330.8
2009341330.8
2010324333.6
2011319333.6
2012315333.6
2013325333.6
2014336333.6
2015345333.6
2016348333.6
2017345333.6
2019345333.6
2020340314.4
2021349314.4
2022336314.4
2023324314.4
2024349314.4
2025330314.4
2026173314.4
First to last qualifying date each year at Derby Aero For each year, a bar from the first to the last day at Derby Aero meeting 30 C (86 F). 1973: 1 January 1973 to 31 December 19731974: 1 January 1974 to 31 December 19741975: 1 January 1975 to 31 December 19751976: 1 January 1976 to 31 December 19761977: 1 January 1977 to 31 December 19771978: 1 January 1978 to 31 December 19781979: 1 January 1979 to 31 December 19791980: 1 January 1980 to 31 December 19801995: 6 January 1995 to 31 December 19951997: 1 January 1997 to 31 December 19971998: 1 January 1998 to 31 December 19981999: 1 January 1999 to 31 December 19992000: 1 January 2000 to 31 December 20002001: 1 January 2001 to 31 December 20012002: 1 January 2002 to 31 December 20022003: 2 January 2003 to 31 December 20032004: 1 January 2004 to 31 December 20042005: 1 January 2005 to 30 December 20052006: 2 January 2006 to 31 December 20062007: 1 January 2007 to 31 December 20072008: 1 January 2008 to 31 December 20082009: 1 January 2009 to 31 December 20092010: 1 January 2010 to 31 December 20102011: 1 January 2011 to 31 December 20112012: 1 January 2012 to 31 December 20122013: 1 January 2013 to 31 December 20132014: 1 January 2014 to 31 December 20142015: 1 January 2015 to 31 December 20152016: 1 January 2016 to 31 December 20162017: 1 January 2017 to 31 December 20172019: 1 January 2019 to 31 December 20192020: 1 January 2020 to 31 December 20202021: 1 January 2021 to 31 December 20212022: 1 January 2022 to 31 December 20222023: 1 January 2023 to 31 December 20232024: 1 January 2024 to 31 December 20242025: 1 January 2025 to 31 December 20252026: 1 January 2026 to 10 October 202619731978199820032008201320192024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Derby Aero meeting 30 C (86 F).
First to last qualifying date each year at Derby Aero
YearFirst dateLast date
19731973-01-011973-12-31
19741974-01-011974-12-31
19751975-01-011975-12-31
19761976-01-011976-12-31
19771977-01-011977-12-31
19781978-01-011978-12-31
19791979-01-011979-12-31
19801980-01-011980-12-31
19951995-01-061995-12-31
19971997-01-011997-12-31
19981998-01-011998-12-31
19991999-01-011999-12-31
20002000-01-012000-12-31
20012001-01-012001-12-31
20022002-01-012002-12-31
20032003-01-022003-12-31
20042004-01-012004-12-31
20052005-01-012005-12-30
20062006-01-022006-12-31
20072007-01-012007-12-31
20082008-01-012008-12-31
20092009-01-012009-12-31
20102010-01-012010-12-31
20112011-01-012011-12-31
20122012-01-012012-12-31
20132013-01-012013-12-31
20142014-01-012014-12-31
20152015-01-012015-12-31
20162016-01-012016-12-31
20172017-01-012017-12-31
20192019-01-012019-12-31
20202020-01-012020-12-31
20212021-01-012021-12-31
20222022-01-012022-12-31
20232023-01-012023-12-31
20242024-01-012024-12-31
20252025-01-012025-12-31
20262026-01-012026-10-10

Every Fixed Threshold

Fixed thresholds at Derby Aero
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days383492021173
35 C (95 F): Days38247201666
40 C (104 F): Days384720191
45 C (113 F): Days1120191
90 F (32.2 C): Days383232016133
100 F (37.8 C): Days38141201616
110 F (43.3 C): Days22420151
20 C (68 F): Tropical nights (min402872016101
25 C (77 F): Days with min40165201651
10 mm (0.39 in): Days with 10 mm or more rain5934197413
25 mm (0.98 in): Days with 25 mm or more rain581820005
50 mm (1.97 in): Days with 50 mm or more rain55820201
100 mm (3.94 in): Days with 100 mm or more rain27319781
200 mm (7.87 in): Days with 200 mm or more rain2119661

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1973.

Download the Data

  • Data for Derby Aero 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-16).