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Derby Aero Weather Records (ASN00003032)

Record envelope, standing records and threshold days for Derby Aero (ASN00003032), Australia, with 76 years of record.

Key Facts for Derby Aero

  • Derby Aero (ASN00003032) is a weather station in Australia at -17.37 latitude and 123.66 longitude, 6 m (20 ft) above sea level.
  • The station reports from 1951 to 2026, 76 years of record.
  • 1,464 records set at Derby Aero still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Derby Aero set a daily record high minimum temperature of 25.0 C (77.0 F) on 16 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Australia, -17.37 latitude, 123.66 longitude.
  • Elevation: 6 m (20 ft).
  • Period of record: 1951 to 2026, 76 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

1 days at or beyond a record
Daily record high and record low at Derby Aero, with 2026 drawn through them The band shows the record high and record low for each calendar day at Derby Aero. The lines show the 2026 daily maximum and minimum. 1 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 01020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Derby Aero. The lines show the 2026 daily maximum and minimum. 1 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Derby Aero, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan44.0 C (111.2 F)19.2 C (66.6 F)38.3 C (100.9 F)22.7 C (72.9 F)
Feb43.8 C (110.8 F)19.2 C (66.6 F)36.9 C (98.4 F)23.6 C (74.5 F)
Mar41.9 C (107.4 F)19.3 C (66.7 F)35.3 C (95.5 F)24.0 C (75.2 F)
Apr41.5 C (106.7 F)13.7 C (56.7 F)n/an/a
May40.3 C (104.5 F)8.2 C (46.8 F)n/an/a
Jun36.6 C (97.9 F)6.1 C (43.0 F)32.4 C (90.3 F)12.2 C (54.0 F)
Jul36.2 C (97.2 F)6.0 C (42.8 F)33.7 C (92.7 F)9.1 C (48.4 F)
Aug40.7 C (105.3 F)6.1 C (43.0 F)36.5 C (97.7 F)12.9 C (55.2 F)
Sep42.7 C (108.9 F)9.1 C (48.4 F)38.6 C (101.5 F)16.6 C (61.9 F)
Oct44.8 C (112.6 F)11.7 C (53.1 F)40.3 C (104.5 F)22.5 C (72.5 F)
Nov44.6 C (112.3 F)18.5 C (65.3 F)n/an/a
Dec45.6 C (114.1 F)18.5 C (65.3 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Derby Aero by the year they were set 1,464 records at Derby Aero still stand. 2016 holds the most, with 88. 02550751001972: 171973: 571974: 301975: 391976: 421977: 241978: 661979: 381980: 271981: 311995: 251996: 331997: 141998: 381999: 182000: 432001: 222002: 202003: 282004: 282005: 482006: 312007: 302008: 262009: 272010: 512011: 312012: 392013: 412014: 312015: 372016: 882017: 302018: 282019: 432020: 382021: 382022: 502023: 382024: 552025: 232026: 1197219771995200020052010201520202025
1,464 records at Derby Aero still stand. 2016 holds the most, with 88.
Standing records at Derby Aero by the year they were set
Year setStanding records
197217
197357
197430
197539
197642
197724
197866
197938
198027
198131
199525
199633
199714
199838
199918
200043
200122
200220
200328
200428
200548
200631
200730
200826
200927
201051
201131
201239
201341
201431
201537
201688
201730
201828
201943
202038
202138
202250
202338
202455
202523
20261

All-Time Record Progression

1 new records
When Derby Aero set new all-time records 1 all-time records were set at Derby Aero between 21 December 2018 and 21 December 2018. Each dot is a new record. Record high maximum temperature21 December 2018: Record high maximum temperature 45.6 C (114.1 F)
1 all-time records were set at Derby Aero between 21 December 2018 and 21 December 2018. Each dot is a new record.
When Derby Aero set new all-time records
DateKindDetail
2018-12-21Record high maximum temperatureRecord high maximum temperature 45.6 C (114.1 F)

Wettest Day of Each Month

Jan: 294.4 mm (11.6 in)
Record daily precipitation for each month at Derby Aero The wettest day on record for each calendar month at Derby Aero. The most was 294.4 mm (11.6 in) on 29 January 1978. 0100200300 Jan: 294.4 mm (11.6 in), 29 January 1978 Jan Feb: 255.3 mm (10.1 in), 14 February 1966 Feb Mar: 159.0 mm (6.3 in), 5 March 2000 Mar Apr: 79.8 mm (3.1 in), 3 April 2023 Apr May: 70.6 mm (2.8 in), 16 May 2010 May Jun: 39.8 mm (1.6 in), 10 June 1978 Jun Jul: 78.6 mm (3.1 in), 7 July 1978 Jul Aug: 21.4 mm (0.8 in), 30 August 2016 Aug Sep: 28.6 mm (1.1 in), 30 September 2022 Sep Oct: 55.6 mm (2.2 in), 1 October 2022 Oct Nov: 115.0 mm (4.5 in), 23 November 2022 Nov Dec: 150.4 mm (5.9 in), 28 December 2017 Dec
The wettest day on record for each calendar month at Derby Aero. The most was 294.4 mm (11.6 in) on 29 January 1978.
Record daily precipitation for each month at Derby Aero
MonthRecord daily precipitation (mm)Date
Jan294.4 mm (11.6 in)29 January 1978
Feb255.3 mm (10.1 in)14 February 1966
Mar159.0 mm (6.3 in)5 March 2000
Apr79.8 mm (3.1 in)3 April 2023
May70.6 mm (2.8 in)16 May 2010
Jun39.8 mm (1.6 in)10 June 1978
Jul78.6 mm (3.1 in)7 July 1978
Aug21.4 mm (0.8 in)30 August 2016
Sep28.6 mm (1.1 in)30 September 2022
Oct55.6 mm (2.2 in)1 October 2022
Nov115.0 mm (4.5 in)23 November 2022
Dec150.4 mm (5.9 in)28 December 2017

Period of Record Coverage

1972 to 2026
Days with data per year at Derby Aero 42 years of record at Derby Aero, 1972 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 1972, 1981, 1996, 2018, 2026. 1972: 259 of 366 days1973: 364 of 365 days1974: 363 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 364 of 365 days1979: 365 of 365 days1980: 361 of 366 days1981: 317 of 365 days1995: 350 of 365 days1996: 320 of 366 days1997: 334 of 365 days1998: 338 of 365 days1999: 342 of 365 days2000: 355 of 366 days2001: 364 of 365 days2002: 358 of 365 days2003: 364 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 364 of 365 days2007: 362 of 365 days2008: 364 of 366 days2009: 362 of 365 days2010: 363 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 361 of 365 days2014: 364 of 365 days2015: 364 of 365 days2016: 366 of 366 days2017: 364 of 365 days2018: 325 of 365 days2019: 357 of 365 days2020: 365 of 366 days2021: 362 of 365 days2022: 364 of 365 days2023: 362 of 365 days2024: 363 of 366 days2025: 365 of 365 days2026: 183 of 365 days1980200020102020
42 years of record at Derby Aero, 1972 to 2026. 5 years have data for under 90 percent of days and are left out of rankings: 1972, 1981, 1996, 2018, 2026.
Days with data per year at Derby Aero
YearDays with dataShare of yearComplete
197225971%No
1973364100%Yes
197436399%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978364100%Yes
1979365100%Yes
198036199%Yes
198131787%No
199535096%Yes
199632087%No
199733492%Yes
199833893%Yes
199934294%Yes
200035597%Yes
2001364100%Yes
200235898%Yes
2003364100%Yes
2004366100%Yes
2005365100%Yes
2006364100%Yes
200736299%Yes
200836499%Yes
200936299%Yes
201036399%Yes
2011365100%Yes
2012366100%Yes
201336199%Yes
2014364100%Yes
2015364100%Yes
2016366100%Yes
2017364100%Yes
201832589%No
201935798%Yes
2020365100%Yes
202136299%Yes
2022364100%Yes
202336299%Yes
202436399%Yes
2025365100%Yes
202618350%No

Latest Records

20
Latest records at Derby Aero
DateStationRecordValueBeat old record byOld record stoodSignificance
16 September 2026Derby Aero, AUdaily high min (Provisional)25.0 C (77.0 F)2.0 C (3.6 F)31 years20 of 100 (Routine)
15 September 2026Derby Aero, AUdaily high min (Provisional)25.4 C (77.7 F)0.4 C (0.7 F)31 years15 of 100 (Routine)
27 August 2026Derby Aero, AUdaily rain (Provisional)10.0 mm (0.4 in)9.8 mm (0.39 in)20 years20 of 100 (Routine)
27 August 2026Derby Aero, AUdaily high min (Provisional)23.6 C (74.5 F)0.1 C (0.2 F)47 years19 of 100 (Routine)
22 August 2026Derby Aero, AUdaily high min (Provisional)21.6 C (70.9 F)1.0 C (1.8 F)16 years12 of 100 (Routine)
25 January 2026Derby Aero, AUdaily rain191.2 mm (7.5 in)97.2 mm (3.8 in)59 years64 of 100 (Major)
18 January 2026Derby Aero, AUdaily high min28.7 C (83.7 F)0.4 C (0.7 F)24 years14 of 100 (Routine)
13 January 2026Derby Aero, AUdaily low min (Tie)22.8 C (73.0 F)tie52 years5 of 100 (Routine)
9 December 2025Derby Aero, AUdaily low min21.3 C (70.3 F)0.6 C (1.1 F)52 years23 of 100 (Routine)
13 November 2025Derby Aero, AUdaily rain14.0 mm (0.6 in)11.2 mm (0.4 in)0 years15 of 100 (Routine)
20 October 2025Derby Aero, AUdaily low max30.9 C (87.6 F)2.0 C (3.6 F)24 years20 of 100 (Routine)
20 October 2025Derby Aero, AUdaily high min (Tie)27.9 C (82.2 F)tie3 years1 of 100 (Routine)
16 October 2025Derby Aero, AUdaily rain11.6 mm (0.5 in)11.4 mm (0.4 in)30 years20 of 100 (Routine)
8 October 2025Derby Aero, AUdaily high min25.8 C (78.4 F)0.6 C (1.1 F)20 years13 of 100 (Routine)
1 October 2025Derby Aero, AUdaily high max41.1 C (106.0 F)0.1 C (0.2 F)52 years20 of 100 (Routine)
30 September 2025Derby Aero, AUdaily low min16.4 C (61.5 F)0.1 C (0.2 F)18 years10 of 100 (Routine)
21 September 2025Derby Aero, AUdaily high max41.1 C (106.0 F)0.3 C (0.5 F)4 years7 of 100 (Routine)
5 September 2025Derby Aero, AUdaily low min13.9 C (57.0 F)0.4 C (0.7 F)2 years6 of 100 (Routine)
19 August 2025Derby Aero, AUdaily low min10.0 C (50.0 F)0.1 C (0.2 F)11 years8 of 100 (Routine)
29 July 2025Derby Aero, AUdaily low max26.9 C (80.4 F)1.6 C (2.9 F)46 years25 of 100 (Routine)

Climate Trend

37 complete years, 1973 to 2025
Annual mean temperature at Derby Aero as warming stripes, 1973 to 2025 One stripe for each of 37 complete years at Derby Aero, 1973 to 2025. Blue stripes are years cooler than the station's own mean of 28.2 C (82.7 F); red stripes are warmer. The coolest year was 1976, at 26.7 C (80.1 F), and the warmest was 2016, at 29.9 C (85.8 F). The strongest colour marks a difference of 1.8 C (3.2 F). 1973: 29.0 C, +0.9 C from the station mean1974: 27.3 C, -0.8 C from the station mean1975: 28.4 C, +0.2 C from the station mean1976: 26.7 C, -1.4 C from the station mean1977: 28.0 C, -0.2 C from the station mean1978: 27.7 C, -0.5 C from the station mean1979: 28.6 C, +0.4 C from the station mean1980: 28.6 C, +0.4 C from the station mean1995: 27.9 C, -0.2 C from the station mean1997: 27.8 C, -0.4 C from the station mean1998: 28.9 C, +0.7 C from the station mean1999: 27.7 C, -0.5 C from the station mean2000: 27.1 C, -1.0 C from the station mean2001: 27.7 C, -0.5 C from the station mean2002: 28.1 C, 0.0 C from the station mean2003: 28.1 C, 0.0 C from the station mean2004: 27.7 C, -0.5 C from the station mean2005: 29.0 C, +0.8 C from the station mean2006: 27.4 C, -0.7 C from the station mean2007: 28.1 C, -0.1 C from the station mean2008: 27.9 C, -0.3 C from the station mean2009: 28.3 C, +0.2 C from the station mean2010: 28.7 C, +0.6 C from the station mean2011: 27.0 C, -1.2 C from the station mean2012: 27.2 C, -0.9 C from the station mean2013: 28.4 C, +0.2 C from the station mean2014: 28.4 C, +0.3 C from the station mean2015: 28.7 C, +0.5 C from the station mean2016: 29.9 C, +1.7 C from the station mean2017: 28.2 C, +0.1 C from the station mean2019: 28.8 C, +0.6 C from the station mean2020: 28.6 C, +0.4 C from the station mean2021: 28.4 C, +0.3 C from the station mean2022: 28.4 C, +0.2 C from the station mean2023: 27.9 C, -0.3 C from the station mean2024: 29.3 C, +1.2 C from the station mean2025: 28.0 C, -0.2 C from the station mean19731980198519901995200020052010201520202025
One stripe for each of 37 complete years at Derby Aero, 1973 to 2025. Blue stripes are years cooler than the station's own mean of 28.2 C (82.7 F); red stripes are warmer. The coolest year was 1976, at 26.7 C (80.1 F), and the warmest was 2016, at 29.9 C (85.8 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Derby Aero as warming stripes, 1973 to 2025
YearAnnual mean temperatureDifference from the station mean
197329.0 C+0.89 C
197427.3 C-0.81 C
197528.4 C+0.21 C
197626.7 C-1.42 C
197728.0 C-0.20 C
197827.7 C-0.45 C
197928.6 C+0.44 C
198028.6 C+0.42 C
199527.9 C-0.24 C
199727.8 C-0.38 C
199828.9 C+0.72 C
199927.7 C-0.45 C
200027.1 C-1.03 C
200127.7 C-0.48 C
200228.1 C-0.01 C
200328.1 C-0.03 C
200427.7 C-0.47 C
200529.0 C+0.83 C
200627.4 C-0.71 C
200728.1 C-0.10 C
200827.9 C-0.30 C
200928.3 C+0.17 C
201028.7 C+0.59 C
201127.0 C-1.18 C
201227.2 C-0.93 C
201328.4 C+0.21 C
201428.4 C+0.29 C
201528.7 C+0.50 C
201629.9 C+1.74 C
201728.2 C+0.08 C
201928.8 C+0.65 C
202028.6 C+0.40 C
202128.4 C+0.26 C
202228.4 C+0.23 C
202327.9 C-0.30 C
202429.3 C+1.19 C
202528.0 C-0.16 C

The fitted trend in annual mean temperature here over 1973 to 2025 is 0.10 C (-0.04 to 0.24) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.1 to 0.4) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Derby Aero
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.10 C (-0.04 to 0.24) per decade0.2 F (-0.1 to 0.4) per decade1973 to 202537Not clearly different from zero
Mean daily maximum0.2 C (0.1 to 0.4) per decade0.4 F (0.1 to 0.6) per decade1973 to 202537Rise
Mean daily minimum-0.02 C (-0.18 to 0.14) per decade-0.04 F (-0.33 to 0.25) per decade1973 to 202537Not clearly different from zero

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1951 to 2026
Yearly extremes at Derby Aero: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)45.6 C (114.1 F)201843.5 C (110.3 F)42
Coldest night (TNn)6.0 C (42.8 F)20048.2 C (46.8 F)42
Wettest day (Rx1day)294.4 mm (11.6 in)197885.8 mm (3.4 in)73
Wettest five days (Rx5day)587.4 mm (23.1 in)1978165.0 mm (6.5 in)73
Longest dry spell (CDD)256 days1981130 days73

Hottest day (TXx)

Hottest day (TXx) at Derby Aero by year The hottest day of the year at Derby Aero, 1951 to 2026. The record is 45.6 C (114.1 F) in 2018, marked on the chart; the median year is 43.5 C (110.3 F). 404244461960198020002020Record: 45.6 C (114.1 F) in 2018
The hottest day of the year at Derby Aero, 1951 to 2026. The record is 45.6 C (114.1 F) in 2018, marked on the chart; the median year is 43.5 C (110.3 F).
Hottest day (TXx) at Derby Aero by year
YearHottest day (TXx)
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
197243.8 C (110.8 F)
197343.1 C (109.6 F)
197441.6 C (106.9 F)
197544.0 C (111.2 F)
197643.7 C (110.7 F)
197741.8 C (107.2 F)
197841.9 C (107.4 F)
197944.0 C (111.2 F)
198044.0 C (111.2 F)
198142.2 C (108.0 F)
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1993n/a
1994n/a
199542.7 C (108.9 F)
199643.8 C (110.8 F)
199742.3 C (108.1 F)
199842.3 C (108.1 F)
199942.0 C (107.6 F)
200043.5 C (110.3 F)
200142.2 C (108.0 F)
200242.9 C (109.2 F)
200344.5 C (112.1 F)
200444.6 C (112.3 F)
200543.5 C (110.3 F)
200643.5 C (110.3 F)
200743.3 C (109.9 F)
200842.5 C (108.5 F)
200944.5 C (112.1 F)
201042.2 C (108.0 F)
201144.9 C (112.8 F)
201243.3 C (109.9 F)
201343.7 C (110.7 F)
201444.1 C (111.4 F)
201544.3 C (111.7 F)
201644.0 C (111.2 F)
201744.8 C (112.6 F)
201845.6 C (114.1 F)
201945.4 C (113.7 F)
202044.6 C (112.3 F)
202143.6 C (110.5 F)
202242.7 C (108.9 F)
202343.0 C (109.4 F)
202443.6 C (110.5 F)
202542.1 C (107.8 F)
202640.3 C (104.5 F)

Coldest night (TNn)

Coldest night (TNn) at Derby Aero by year The coldest night of the year at Derby Aero, 1951 to 2026. The record is 6.0 C (42.8 F) in 2004, marked on the chart; the median year is 8.2 C (46.8 F). 681012141960198020002020Record: 6.0 C (42.8 F) in 2004
The coldest night of the year at Derby Aero, 1951 to 2026. The record is 6.0 C (42.8 F) in 2004, marked on the chart; the median year is 8.2 C (46.8 F).
Coldest night (TNn) at Derby Aero by year
YearColdest night (TNn)
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
19728.5 C (47.3 F)
197311.3 C (52.3 F)
19747.7 C (45.9 F)
19759.7 C (49.5 F)
19766.7 C (44.1 F)
19778.7 C (47.7 F)
19789.3 C (48.7 F)
19797.9 C (46.2 F)
198010.1 C (50.2 F)
19819.6 C (49.3 F)
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1993n/a
1994n/a
19958.0 C (46.4 F)
19969.0 C (48.2 F)
19979.4 C (48.9 F)
19989.5 C (49.1 F)
19997.9 C (46.2 F)
20008.5 C (47.3 F)
20018.4 C (47.1 F)
20027.2 C (45.0 F)
20037.7 C (45.9 F)
20046.0 C (42.8 F)
200510.1 C (50.2 F)
20067.0 C (44.6 F)
20077.3 C (45.1 F)
20086.7 C (44.1 F)
20097.5 C (45.5 F)
201012.6 C (54.7 F)
20116.5 C (43.7 F)
20126.1 C (43.0 F)
20136.7 C (44.1 F)
20146.6 C (43.9 F)
20158.5 C (47.3 F)
20169.3 C (48.7 F)
20177.4 C (45.3 F)
20186.1 C (43.0 F)
201910.1 C (50.2 F)
20209.5 C (49.1 F)
20219.1 C (48.4 F)
20227.1 C (44.8 F)
20237.6 C (45.7 F)
20249.2 C (48.6 F)
20257.5 C (45.5 F)
20269.1 C (48.4 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Derby Aero by year The wettest day of the year at Derby Aero, 1951 to 2026. The record is 294.4 mm (11.6 in) in 1978, marked on the chart; the median year is 85.8 mm (3.4 in). 01002003001960198020002020Record: 294.4 mm (11.6 in) in 1978
The wettest day of the year at Derby Aero, 1951 to 2026. The record is 294.4 mm (11.6 in) in 1978, marked on the chart; the median year is 85.8 mm (3.4 in).
Wettest day (Rx1day) at Derby Aero by year
YearWettest day (Rx1day)
195125.7 mm (1.0 in)
195253.6 mm (2.1 in)
19530.0 mm (0.00 in)
19540.0 mm (0.00 in)
19550.0 mm (0.00 in)
195625.9 mm (1.0 in)
19570.0 mm (0.00 in)
19580.0 mm (0.00 in)
195911.9 mm (0.5 in)
196076.7 mm (3.0 in)
196197.3 mm (3.8 in)
196290.4 mm (3.6 in)
196380.5 mm (3.2 in)
1964146.1 mm (5.8 in)
196553.3 mm (2.1 in)
1966255.3 mm (10.1 in)
1967111.8 mm (4.4 in)
196865.5 mm (2.6 in)
1969167.6 mm (6.6 in)
197045.0 mm (1.8 in)
197160.7 mm (2.4 in)
197257.2 mm (2.3 in)
197382.6 mm (3.3 in)
197476.4 mm (3.0 in)
197551.6 mm (2.0 in)
197690.0 mm (3.5 in)
1977121.6 mm (4.8 in)
1978294.4 mm (11.6 in)
197937.2 mm (1.5 in)
1980130.6 mm (5.1 in)
198152.6 mm (2.1 in)
1982111.6 mm (4.4 in)
198389.2 mm (3.5 in)
1984128.8 mm (5.1 in)
198586.6 mm (3.4 in)
1986116.2 mm (4.6 in)
198758.8 mm (2.3 in)
198868.0 mm (2.7 in)
198985.6 mm (3.4 in)
199360.0 mm (2.4 in)
199458.0 mm (2.3 in)
199560.0 mm (2.4 in)
1996102.0 mm (4.0 in)
199796.0 mm (3.8 in)
1998105.0 mm (4.1 in)
199964.0 mm (2.5 in)
2000159.0 mm (6.3 in)
2001152.0 mm (6.0 in)
2002139.0 mm (5.5 in)
2003157.0 mm (6.2 in)
200476.0 mm (3.0 in)
200570.0 mm (2.8 in)
200657.0 mm (2.2 in)
2007139.8 mm (5.5 in)
2008126.8 mm (5.0 in)
2009115.4 mm (4.5 in)
201070.6 mm (2.8 in)
201189.8 mm (3.5 in)
201264.8 mm (2.6 in)
201385.8 mm (3.4 in)
201477.6 mm (3.1 in)
2015111.6 mm (4.4 in)
2016147.4 mm (5.8 in)
2017150.4 mm (5.9 in)
2018100.6 mm (4.0 in)
201943.2 mm (1.7 in)
2020152.8 mm (6.0 in)
2021102.6 mm (4.0 in)
2022115.0 mm (4.5 in)
202379.8 mm (3.1 in)
2024106.2 mm (4.2 in)
2025153.2 mm (6.0 in)
2026191.2 mm (7.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Derby Aero by year The wettest five days of the year at Derby Aero, 1951 to 2026. The record is 587.4 mm (23.1 in) in 1978, marked on the chart; the median year is 165.0 mm (6.5 in). 02004006001960198020002020Record: 587.4 mm (23.1 in) in 1978
The wettest five days of the year at Derby Aero, 1951 to 2026. The record is 587.4 mm (23.1 in) in 1978, marked on the chart; the median year is 165.0 mm (6.5 in).
Wettest five days (Rx5day) at Derby Aero by year
YearWettest five days (Rx5day)
195140.7 mm (1.6 in)
195288.1 mm (3.5 in)
19530.0 mm (0.00 in)
19540.0 mm (0.00 in)
19550.0 mm (0.00 in)
195626.9 mm (1.1 in)
19570.0 mm (0.00 in)
19580.0 mm (0.00 in)
195920.6 mm (0.8 in)
1960230.8 mm (9.1 in)
1961146.4 mm (5.8 in)
1962163.5 mm (6.4 in)
1963122.4 mm (4.8 in)
1964278.0 mm (10.9 in)
196566.2 mm (2.6 in)
1966361.8 mm (14.2 in)
1967219.5 mm (8.6 in)
1968111.7 mm (4.4 in)
1969223.7 mm (8.8 in)
197097.3 mm (3.8 in)
1971128.3 mm (5.1 in)
197270.1 mm (2.8 in)
1973161.9 mm (6.4 in)
1974129.6 mm (5.1 in)
1975153.8 mm (6.1 in)
1976157.2 mm (6.2 in)
1977213.4 mm (8.4 in)
1978587.4 mm (23.1 in)
197981.4 mm (3.2 in)
1980240.4 mm (9.5 in)
1981101.8 mm (4.0 in)
1982250.8 mm (9.9 in)
1983104.4 mm (4.1 in)
1984196.4 mm (7.7 in)
1985126.8 mm (5.0 in)
1986237.2 mm (9.3 in)
1987164.4 mm (6.5 in)
198883.8 mm (3.3 in)
1989222.8 mm (8.8 in)
1993229.0 mm (9.0 in)
199472.0 mm (2.8 in)
1995113.0 mm (4.4 in)
1996219.0 mm (8.6 in)
1997281.0 mm (11.1 in)
1998213.2 mm (8.4 in)
1999165.0 mm (6.5 in)
2000376.0 mm (14.8 in)
2001365.0 mm (14.4 in)
2002291.2 mm (11.5 in)
2003330.0 mm (13.0 in)
2004162.0 mm (6.4 in)
200591.2 mm (3.6 in)
2006153.0 mm (6.0 in)
2007198.0 mm (7.8 in)
2008148.4 mm (5.8 in)
2009204.2 mm (8.0 in)
2010152.0 mm (6.0 in)
2011202.0 mm (8.0 in)
2012175.8 mm (6.9 in)
2013276.0 mm (10.9 in)
2014198.2 mm (7.8 in)
2015171.2 mm (6.7 in)
2016249.8 mm (9.8 in)
2017202.8 mm (8.0 in)
2018262.4 mm (10.3 in)
201962.0 mm (2.4 in)
2020291.0 mm (11.5 in)
2021226.6 mm (8.9 in)
2022206.0 mm (8.1 in)
2023252.4 mm (9.9 in)
2024115.8 mm (4.6 in)
2025218.4 mm (8.6 in)
2026257.2 mm (10.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Derby Aero by year The longest dry spell of the year at Derby Aero, 1951 to 2026. The record is 256 days in 1981, marked on the chart; the median year is 130 days. 01002003001960198020002020Record: 256 days in 1981
The longest dry spell of the year at Derby Aero, 1951 to 2026. The record is 256 days in 1981, marked on the chart; the median year is 130 days.
Longest dry spell (CDD) at Derby Aero by year
YearLongest dry spell (CDD)
1951172 days
1952101 days
1953184 days
195492 days
195592 days
1956242 days
195792 days
1958184 days
1959182 days
1960200 days
1961196 days
1962152 days
1963197 days
1964164 days
1965107 days
1966159 days
1967207 days
196896 days
1969208 days
1970191 days
1971177 days
1972200 days
1973129 days
197486 days
197567 days
1976130 days
1977254 days
197876 days
1979153 days
1980141 days
1981256 days
1982216 days
1983177 days
1984245 days
1985250 days
198668 days
1987129 days
198861 days
198930 days
199337 days
1994169 days
199537 days
199632 days
1997108 days
199857 days
1999109 days
2000204 days
2001124 days
2002234 days
2003172 days
2004163 days
2005107 days
200687 days
2007156 days
2008122 days
2009221 days
201065 days
2011177 days
2012231 days
2013134 days
201486 days
201551 days
201672 days
201776 days
201831 days
201938 days
202092 days
2021145 days
202286 days
202351 days
202479 days
2025140 days
202671 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

58 years, 1959 to 2025

A day with at least 93.1 mm (3.7 in) of rain is expected about once in 2 years. A day with at least 259.2 mm (10.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Derby Aero: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years93.1 mm (3.7 in)
5 years135.5 mm (5.3 in)
10 years164.4 mm (6.5 in)
25 years201.9 mm (7.9 in)
50 years230.3 mm (9.1 in)
100 years259.2 mm (10.2 in)Longer than the 58 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 58 years of values from 1959 to 2025.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 294.4 mm (11.6 in) in 1978; 255.3 mm (10.1 in) in 1966; 167.6 mm (6.6 in) in 1969.

Download the Data

  • Data for Derby Aero standing records by year: CSV or JSON. Field meanings are on the data page.
  • 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-12).