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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Lalla Rookh Threshold Days by Year (ASN00004057)

4 fixed thresholds counted per year at Lalla Rookh (ASN00004057): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lalla Rookh Thresholds

  • Lalla Rookh: days with 10 mm (0.39 in) or more of precipitation in 27 years, most in 1917 with 13.
  • Lalla Rookh: days with 25 mm (0.98 in) or more of precipitation in 27 years, most in 1917 with 9.
  • Lalla Rookh: days with 50 mm (1.97 in) or more of precipitation in 19 years, most in 1917 with 3.
  • Lalla Rookh: days with 100 mm (3.94 in) or more of precipitation in 6 years, most in 1956 with 1.
  • 4 fixed thresholds have at least one qualifying day at Lalla Rookh.
27 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Lalla Rookh Days per year at Lalla Rookh with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 13 in 1917. 0510151917: 131918: 61923: 101949: 111950: 71951: 101952: 51953: 81954: 101956: 131957: 71958: 91959: 21960: 91961: 81962: 51963: 111964: 51965: 111966: 131967: 111968: 71969: 61970: 41971: 91972: 41973: 9191719491952195619591962196519681971
Days per year at Lalla Rookh with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 13 in 1917.
Days with 10 mm (0.39 in) or more of precipitation per year at Lalla Rookh
YearDaysDecade average
1917139.5
191869.5
19231010
19491111
195077.9
1951107.9
195257.9
195387.9
1954107.9
1956137.9
195777.9
195897.9
195927.9
196098.6
196188.6
196258.6
1963118.6
196458.6
1965118.6
1966138.6
1967118.6
196878.6
196968.6
197046.5
197196.5
197246.5
197396.5
First to last qualifying date each year at Lalla Rookh For each year, a bar from the first to the last day at Lalla Rookh meeting 10 mm (0.39 in). 1917: 2 January 1917 to 17 July 19171918: 1 January 1918 to 25 February 19181923: 3 January 1923 to 6 July 19231949: 31 January 1949 to 19 December 19491950: 1 February 1950 to 4 June 19501951: 2 January 1951 to 9 June 19511952: 21 January 1952 to 21 May 19521953: 4 January 1953 to 23 August 19531954: 27 January 1954 to 29 November 19541956: 4 January 1956 to 16 June 19561957: 18 January 1957 to 15 December 19571958: 19 January 1958 to 26 December 19581959: 6 January 1959 to 29 July 19591960: 31 January 1960 to 21 December 19601961: 16 January 1961 to 1 March 19611962: 8 January 1962 to 14 December 19621963: 7 January 1963 to 1 June 19631964: 10 January 1964 to 27 April 19641965: 11 January 1965 to 27 June 19651966: 30 January 1966 to 15 November 19661967: 1 February 1967 to 19 November 19671968: 15 January 1968 to 14 November 19681969: 7 January 1969 to 18 February 19691970: 1 February 1970 to 30 December 19701971: 29 January 1971 to 9 July 19711972: 1 January 1972 to 20 July 19721973: 12 January 1973 to 21 November 19731917195019541959196319671971JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Lalla Rookh meeting 10 mm (0.39 in).
First to last qualifying date each year at Lalla Rookh
YearFirst dateLast date
19171917-01-021917-07-17
19181918-01-011918-02-25
19231923-01-031923-07-06
19491949-01-311949-12-19
19501950-02-011950-06-04
19511951-01-021951-06-09
19521952-01-211952-05-21
19531953-01-041953-08-23
19541954-01-271954-11-29
19561956-01-041956-06-16
19571957-01-181957-12-15
19581958-01-191958-12-26
19591959-01-061959-07-29
19601960-01-311960-12-21
19611961-01-161961-03-01
19621962-01-081962-12-14
19631963-01-071963-06-01
19641964-01-101964-04-27
19651965-01-111965-06-27
19661966-01-301966-11-15
19671967-02-011967-11-19
19681968-01-151968-11-14
19691969-01-071969-02-18
19701970-02-011970-12-30
19711971-01-291971-07-09
19721972-01-011972-07-20
19731973-01-121973-11-21

Every Fixed Threshold

Fixed thresholds at Lalla Rookh
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain271319179
25 mm (0.98 in): Days with 25 mm or more rain27919174
50 mm (1.97 in): Days with 50 mm or more rain19319172
100 mm (3.94 in): Days with 100 mm or more rain6119561

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1917.

Download the Data

  • Data for Lalla Rookh 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).