Daily records
Page built 2026-10-19
Data as of 2026-10-17
Search
Built 2026-10-19 (19 October 2026)

Derby Post Office Threshold Days by Year (ASN00003007)

14 fixed thresholds counted per year at Derby Post Office (ASN00003007): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Derby Post Office Thresholds

  • Derby Post Office: days with 10 mm (0.39 in) or more of precipitation in 80 years, most in 1942 with 28.
  • Derby Post Office: days with 25 mm (0.98 in) or more of precipitation in 77 years, most in 1942 with 15.
  • Derby Post Office: days with 50 mm (1.97 in) or more of precipitation in 70 years, most in 1930 with 7.
  • Derby Post Office: days with 100 mm (3.94 in) or more of precipitation in 24 years, most in 1926 with 3.
  • 14 fixed thresholds have at least one qualifying day at Derby Post Office.
22 years with a qualifying day
Days at or above 30 C (86 F) per year at Derby Post Office Days per year at Derby Post Office with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 353 in 1992. 01002003004001964: 3231965: 3351966: 3281967: 3091968: 3071969: 3151970: 3341971: 3141982: 3151983: 3261984: 3051985: 3281986: 3131987: 3331988: 3381989: 3411990: 3381991: 3391992: 3531993: 3331994: 3341996: 32019641967197019831986198919921996
Days per year at Derby Post Office with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 353 in 1992.
Days at or above 30 C (86 F) per year at Derby Post Office
YearDaysDecade average
1964323319.5
1965335319.5
1966328319.5
1967309319.5
1968307319.5
1969315319.5
1970334324
1971314324
1982315324.9
1983326324.9
1984305324.9
1985328324.9
1986313324.9
1987333324.9
1988338324.9
1989341324.9
1990338336.2
1991339336.2
1992353336.2
1993333336.2
1994334336.2
1996320336.2
First to last qualifying date each year at Derby Post Office For each year, a bar from the first to the last day at Derby Post Office meeting 30 C (86 F). 1964: 1 January 1964 to 31 December 19641965: 1 January 1965 to 31 December 19651966: 1 January 1966 to 31 December 19661967: 1 January 1967 to 31 December 19671968: 1 January 1968 to 31 December 19681969: 1 January 1969 to 31 December 19691970: 1 January 1970 to 31 December 19701971: 1 January 1971 to 31 December 19711982: 1 January 1982 to 31 December 19821983: 1 January 1983 to 31 December 19831984: 1 January 1984 to 31 December 19841985: 1 January 1985 to 31 December 19851986: 1 January 1986 to 31 December 19861987: 1 January 1987 to 31 December 19871988: 1 January 1988 to 31 December 19881989: 1 January 1989 to 31 December 19891990: 1 January 1990 to 31 December 19901991: 1 January 1991 to 31 December 19911992: 1 January 1992 to 31 December 19921993: 1 January 1993 to 31 December 19931994: 1 January 1994 to 31 December 19941996: 11 January 1996 to 31 December 199619641967197019831986198919921996JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Derby Post Office meeting 30 C (86 F).
First to last qualifying date each year at Derby Post Office
YearFirst dateLast date
19641964-01-011964-12-31
19651965-01-011965-12-31
19661966-01-011966-12-31
19671967-01-011967-12-31
19681968-01-011968-12-31
19691969-01-011969-12-31
19701970-01-011970-12-31
19711971-01-011971-12-31
19821982-01-011982-12-31
19831983-01-011983-12-31
19841984-01-011984-12-31
19851985-01-011985-12-31
19861986-01-011986-12-31
19871987-01-011987-12-31
19881988-01-011988-12-31
19891989-01-011989-12-31
19901990-01-011990-12-31
19911991-01-011991-12-31
19921992-01-011992-12-31
19931993-01-011993-12-31
19941994-01-011994-12-31
19961996-01-111996-12-31

Every Fixed Threshold

Fixed thresholds at Derby Post Office
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days223531992320
35 C (95 F): Days222191992167
40 C (104 F): Days2226199010
45 C (113 F): Days5119671
90 F (32.2 C): Days223181992268
100 F (37.8 C): Days2282198946
110 F (43.3 C): Days15419852
20 C (68 F): Tropical nights (min232881992233
25 C (77 F): Days with min231471992131
10 mm (0.39 in): Days with 10 mm or more rain8028194218
25 mm (0.98 in): Days with 25 mm or more rain7715194210
50 mm (1.97 in): Days with 50 mm or more rain70719306
100 mm (3.94 in): Days with 100 mm or more rain24319261
200 mm (7.87 in): Days with 200 mm or more rain4119161

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1964.

Download the Data

  • Data for Derby Post Office 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).