Built 2026-10-19 (19 October 2026)

Imisly Threshold Days by Year (AJ000037914)

3 fixed thresholds counted per year at Imisly (AJ000037914): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Imisly Thresholds

  • Imisly: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 1981 with 20.
  • Imisly: days with 25 mm (0.98 in) or more of precipitation in 23 years, most in 1989 with 4.
  • Imisly: days with 50 mm (1.97 in) or more of precipitation in 3 years, most in 1968 with 1.
  • 3 fixed thresholds have at least one qualifying day at Imisly.
35 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Imisly Days per year at Imisly with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 20 in 1981. 051015201955: 41956: 121957: 121958: 61959: 31960: 71962: 51963: 121964: 31965: 31967: 61968: 71969: 111970: 51971: 31972: 81973: 91974: 81975: 91976: 61977: 81978: 71979: 71980: 51981: 201982: 131983: 51984: 111985: 61986: 81987: 121988: 121989: 91990: 91991: 10195519591964196919731977198119851989
Days per year at Imisly with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 20 in 1981.
Days with 10 mm (0.39 in) or more of precipitation per year at Imisly
YearDaysDecade average
195547.4
1956127.4
1957127.4
195867.4
195937.4
196076.8
196256.8
1963126.8
196436.8
196536.8
196766.8
196876.8
1969116.8
197057
197137
197287
197397
197487
197597
197667
197787
197877
197977
1980510.1
19812010.1
19821310.1
1983510.1
19841110.1
1985610.1
1986810.1
19871210.1
19881210.1
1989910.1
199099.5
1991109.5
First to last qualifying date each year at Imisly For each year, a bar from the first to the last day at Imisly meeting 10 mm (0.39 in). 1955: 6 June 1955 to 1 December 19551956: 13 January 1956 to 29 December 19561957: 6 January 1957 to 20 December 19571958: 5 April 1958 to 1 December 19581959: 3 March 1959 to 19 November 19591960: 11 March 1960 to 20 September 19601962: 10 February 1962 to 10 November 19621963: 3 January 1963 to 2 November 19631964: 1 January 1964 to 1 May 19641965: 20 April 1965 to 24 October 19651967: 23 March 1967 to 22 October 19671968: 2 April 1968 to 1 November 19681969: 2 January 1969 to 15 December 19691970: 21 April 1970 to 13 December 19701971: 14 January 1971 to 16 June 19711972: 6 May 1972 to 28 November 19721973: 16 January 1973 to 18 December 19731974: 1 March 1974 to 6 December 19741975: 21 February 1975 to 1 December 19751976: 5 February 1976 to 20 October 19761977: 6 January 1977 to 9 November 19771978: 3 February 1978 to 21 June 19781979: 28 February 1979 to 29 December 19791980: 15 May 1980 to 31 December 19801981: 21 February 1981 to 29 December 19811982: 12 March 1982 to 24 November 19821983: 19 April 1983 to 29 July 19831984: 14 February 1984 to 25 December 19841985: 2 February 1985 to 3 December 19851986: 20 January 1986 to 30 November 19861987: 8 February 1987 to 26 December 19871988: 8 April 1988 to 27 December 19881989: 18 May 1989 to 1 December 19891990: 23 January 1990 to 14 October 19901991: 21 February 1991 to 3 November 19911955196019671972197719821987JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Imisly meeting 10 mm (0.39 in).
First to last qualifying date each year at Imisly
YearFirst dateLast date
19551955-06-061955-12-01
19561956-01-131956-12-29
19571957-01-061957-12-20
19581958-04-051958-12-01
19591959-03-031959-11-19
19601960-03-111960-09-20
19621962-02-101962-11-10
19631963-01-031963-11-02
19641964-01-011964-05-01
19651965-04-201965-10-24
19671967-03-231967-10-22
19681968-04-021968-11-01
19691969-01-021969-12-15
19701970-04-211970-12-13
19711971-01-141971-06-16
19721972-05-061972-11-28
19731973-01-161973-12-18
19741974-03-011974-12-06
19751975-02-211975-12-01
19761976-02-051976-10-20
19771977-01-061977-11-09
19781978-02-031978-06-21
19791979-02-281979-12-29
19801980-05-151980-12-31
19811981-02-211981-12-29
19821982-03-121982-11-24
19831983-04-191983-07-29
19841984-02-141984-12-25
19851985-02-021985-12-03
19861986-01-201986-11-30
19871987-02-081987-12-26
19881988-04-081988-12-27
19891989-05-181989-12-01
19901990-01-231990-10-14
19911991-02-211991-11-03

Every Fixed Threshold

Fixed thresholds at Imisly
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3520198110
25 mm (0.98 in): Days with 25 mm or more rain23419891
50 mm (1.97 in): Days with 50 mm or more rain3119681

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1955.

Download the Data

  • Data for Imisly 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).