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Built 2026-10-19 (19 October 2026)

Ariyalur Weather Records (IN020131800)

Record envelope, standing records and threshold days for Ariyalur (IN020131800), India, with 70 years of record.

Key Facts for Ariyalur

  • Ariyalur (IN020131800) is a weather station in India at 11.13 latitude and 79.08 longitude, 78 m (256 ft) above sea level.
  • The station reports from 1901 to 1970, 70 years of record.
  • 0 records set at Ariyalur still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Ariyalur set a daily record precipitation of 104.0 mm (4.1 in) on 20 November 1970.

About the Station

  • Location: India, 11.13 latitude, 79.08 longitude.
  • Elevation: 78 m (256 ft).
  • Period of record: 1901 to 1970, 70 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Ariyalur, with 2026 drawn through them The band shows the record high and record low for each calendar day at Ariyalur. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Ariyalur. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Ariyalur, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Which Years Hold Standing Records

0 standing records
Standing records at Ariyalur by the year they were set 0 records at Ariyalur still stand. 00000000000
0 records at Ariyalur still stand.
Standing records at Ariyalur by the year they were set
Year setStanding records

All-Time Record Progression

1 new records
When Ariyalur set new all-time records 1 all-time records were set at Ariyalur between 16 December 1933 and 16 December 1933. Each dot is a new record. Record daily precipitation16 December 1933: Record daily precipitation 329.2 mm (13.0 in)
1 all-time records were set at Ariyalur between 16 December 1933 and 16 December 1933. Each dot is a new record.
When Ariyalur set new all-time records
DateKindDetail
1933-12-16Record daily precipitationRecord daily precipitation 329.2 mm (13.0 in)

Wettest Day of Each Month

Dec: 329.2 mm (13.0 in)
Record daily precipitation for each month at Ariyalur The wettest day on record for each calendar month at Ariyalur. The most was 329.2 mm (13.0 in) on 16 December 1933. 0100200300400 Jan: 160.0 mm (6.3 in), 13 January 1923 Jan Feb: 95.3 mm (3.8 in), 19 February 1944 Feb Mar: 59.0 mm (2.3 in), 17 March 1968 Mar Apr: 285.0 mm (11.2 in), 14 April 1939 Apr May: 126.5 mm (5.0 in), 30 May 1951 May Jun: 111.3 mm (4.4 in), 5 June 1911 Jun Jul: 133.4 mm (5.3 in), 14 July 1916 Jul Aug: 173.0 mm (6.8 in), 28 August 1960 Aug Sep: 125.7 mm (4.9 in), 1 September 1905 Sep Oct: 124.2 mm (4.9 in), 1 October 1937 Oct Nov: 284.0 mm (11.2 in), 10 November 1913 Nov Dec: 329.2 mm (13.0 in), 16 December 1933 Dec
The wettest day on record for each calendar month at Ariyalur. The most was 329.2 mm (13.0 in) on 16 December 1933.
Record daily precipitation for each month at Ariyalur
MonthRecord daily precipitation (mm)Date
Jan160.0 mm (6.3 in)13 January 1923
Feb95.3 mm (3.8 in)19 February 1944
Mar59.0 mm (2.3 in)17 March 1968
Apr285.0 mm (11.2 in)14 April 1939
May126.5 mm (5.0 in)30 May 1951
Jun111.3 mm (4.4 in)5 June 1911
Jul133.4 mm (5.3 in)14 July 1916
Aug173.0 mm (6.8 in)28 August 1960
Sep125.7 mm (4.9 in)1 September 1905
Oct124.2 mm (4.9 in)1 October 1937
Nov284.0 mm (11.2 in)10 November 1913
Dec329.2 mm (13.0 in)16 December 1933

Latest Records

20
Latest records at Ariyalur
DateStationRecordValueBeat old record byOld record stoodSignificance
20 November 1970Ariyalur, INdaily rain104.0 mm (4.1 in)8.7 mm (0.34 in)13 years14 of 100 (Routine)
7 October 1970Ariyalur, INdaily rain97.0 mm (3.8 in)45.6 mm (1.8 in)4 years32 of 100 (Routine)
20 June 1970Ariyalur, INdaily rain30.0 mm (1.2 in)19.8 mm (0.8 in)68 years38 of 100 (Notable)
10 May 1970Ariyalur, INdaily rain49.0 mm (1.9 in)24.6 mm (1.0 in)67 years39 of 100 (Notable)
5 April 1970Ariyalur, INdaily rain12.0 mm (0.5 in)4.0 mm (0.16 in)9 years10 of 100 (Routine)
31 December 1969Ariyalur, INdaily rain22.0 mm (0.9 in)4.5 mm (0.18 in)50 years20 of 100 (Routine)
23 November 1969Ariyalur, INdaily rain96.3 mm (3.8 in)66.8 mm (2.6 in)58 years49 of 100 (Notable)
19 November 1969Ariyalur, INdaily rain107.0 mm (4.2 in)71.0 mm (2.8 in)6 years35 of 100 (Notable)
17 August 1969Ariyalur, INdaily rain33.0 mm (1.3 in)2.0 mm (0.08 in)26 years13 of 100 (Routine)
7 June 1968Ariyalur, INdaily rain37.2 mm (1.5 in)9.5 mm (0.37 in)34 years21 of 100 (Routine)
3 May 1968Ariyalur, INdaily rain48.0 mm (1.9 in)37.3 mm (1.5 in)14 years28 of 100 (Routine)
2 May 1968Ariyalur, INdaily rain23.2 mm (0.9 in)0.3 mm (0.01 in)51 years20 of 100 (Routine)
28 April 1968Ariyalur, INdaily rain30.0 mm (1.2 in)24.7 mm (1.0 in)23 years19 of 100 (Routine)
27 April 1968Ariyalur, INdaily rain29.6 mm (1.2 in)7.2 mm (0.28 in)67 years28 of 100 (Routine)
28 March 1968Ariyalur, INdaily rain47.4 mm (1.9 in)43.6 mm (1.7 in)38 years49 of 100 (Notable)
17 March 1968Ariyalur, INmonthly rain59.0 mm (2.3 in)4.9 mm (0.19 in)35 years29 of 100 (Routine)
9 December 1967Ariyalur, INdaily rain232.0 mm (9.1 in)217.8 mm (8.6 in)24 years53 of 100 (Notable)
4 November 1967Ariyalur, INdaily rain63.0 mm (2.5 in)10.9 mm (0.4 in)48 years24 of 100 (Routine)
2 October 1967Ariyalur, INdaily rain77.0 mm (3.0 in)23.4 mm (0.9 in)44 years31 of 100 (Routine)
27 August 1967Ariyalur, INdaily rain140.0 mm (5.5 in)60.8 mm (2.4 in)32 years39 of 100 (Notable)

Extremes by Year

1901 to 1970
Yearly extremes at Ariyalur: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)329.2 mm (13.0 in)193396.8 mm (3.8 in)68
Wettest five days (Rx5day)514.6 mm (20.3 in)1933165.5 mm (6.5 in)68
Longest dry spell (CDD)151 days194269 days68

Wettest day (Rx1day)

Wettest day (Rx1day) at Ariyalur by year The wettest day of the year at Ariyalur, 1901 to 1970. The record is 329.2 mm (13.0 in) in 1933, marked on the chart; the median year is 96.8 mm (3.8 in). 0100200300400192019401960Record: 329.2 mm (13.0 in) in 1933
The wettest day of the year at Ariyalur, 1901 to 1970. The record is 329.2 mm (13.0 in) in 1933, marked on the chart; the median year is 96.8 mm (3.8 in).
Wettest day (Rx1day) at Ariyalur by year
YearWettest day (Rx1day)
190188.9 mm (3.5 in)
1902113.5 mm (4.5 in)
190370.6 mm (2.8 in)
190495.0 mm (3.7 in)
1905125.7 mm (4.9 in)
1906101.6 mm (4.0 in)
1907131.3 mm (5.2 in)
190888.9 mm (3.5 in)
190976.2 mm (3.0 in)
191077.5 mm (3.1 in)
1911114.3 mm (4.5 in)
191284.3 mm (3.3 in)
1913284.0 mm (11.2 in)
191475.7 mm (3.0 in)
1915139.2 mm (5.5 in)
1916133.4 mm (5.3 in)
191783.8 mm (3.3 in)
191858.4 mm (2.3 in)
1919135.9 mm (5.4 in)
1920171.5 mm (6.8 in)
192188.9 mm (3.5 in)
192266.0 mm (2.6 in)
1923160.0 mm (6.3 in)
1924113.8 mm (4.5 in)
192572.4 mm (2.9 in)
192670.6 mm (2.8 in)
192740.1 mm (1.6 in)
192885.1 mm (3.4 in)
192978.7 mm (3.1 in)
1930109.7 mm (4.3 in)
1931239.8 mm (9.4 in)
1932140.2 mm (5.5 in)
1933329.2 mm (13.0 in)
193479.2 mm (3.1 in)
193576.5 mm (3.0 in)
1936178.8 mm (7.0 in)
1937143.8 mm (5.7 in)
193890.4 mm (3.6 in)
1939285.0 mm (11.2 in)
194074.2 mm (2.9 in)
1941128.8 mm (5.1 in)
1942100.1 mm (3.9 in)
1943126.2 mm (5.0 in)
194495.3 mm (3.8 in)
194554.1 mm (2.1 in)
1946116.8 mm (4.6 in)
194767.8 mm (2.7 in)
194882.6 mm (3.3 in)
194985.1 mm (3.4 in)
195097.8 mm (3.9 in)
1951126.5 mm (5.0 in)
195295.8 mm (3.8 in)
195374.7 mm (2.9 in)
195491.4 mm (3.6 in)
1955188.0 mm (7.4 in)
195699.3 mm (3.9 in)
195768.1 mm (2.7 in)
1959137.3 mm (5.4 in)
1960173.0 mm (6.8 in)
196182.6 mm (3.3 in)
1962120.0 mm (4.7 in)
196375.0 mm (3.0 in)
196487.1 mm (3.4 in)
1966113.0 mm (4.4 in)
1967232.0 mm (9.1 in)
196877.0 mm (3.0 in)
1969107.0 mm (4.2 in)
1970104.0 mm (4.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Ariyalur by year The wettest five days of the year at Ariyalur, 1901 to 1970. The record is 514.6 mm (20.3 in) in 1933, marked on the chart; the median year is 165.5 mm (6.5 in). 0200400600192019401960Record: 514.6 mm (20.3 in) in 1933
The wettest five days of the year at Ariyalur, 1901 to 1970. The record is 514.6 mm (20.3 in) in 1933, marked on the chart; the median year is 165.5 mm (6.5 in).
Wettest five days (Rx5day) at Ariyalur by year
YearWettest five days (Rx5day)
1901219.5 mm (8.6 in)
1902154.1 mm (6.1 in)
1903131.3 mm (5.2 in)
1904228.0 mm (9.0 in)
1905167.6 mm (6.6 in)
1906142.2 mm (5.6 in)
1907210.9 mm (8.3 in)
1908194.4 mm (7.7 in)
1909180.1 mm (7.1 in)
191089.2 mm (3.5 in)
1911163.4 mm (6.4 in)
1912218.4 mm (8.6 in)
1913352.1 mm (13.9 in)
1914123.8 mm (4.9 in)
1915159.3 mm (6.3 in)
1916199.9 mm (7.9 in)
191792.4 mm (3.6 in)
1918106.2 mm (4.2 in)
1919267.3 mm (10.5 in)
1920368.6 mm (14.5 in)
1921116.8 mm (4.6 in)
1922143.6 mm (5.7 in)
1923272.6 mm (10.7 in)
1924142.2 mm (5.6 in)
1925124.7 mm (4.9 in)
1926151.9 mm (6.0 in)
192767.0 mm (2.6 in)
1928121.2 mm (4.8 in)
1929118.9 mm (4.7 in)
1930281.9 mm (11.1 in)
1931331.4 mm (13.0 in)
1932191.0 mm (7.5 in)
1933514.6 mm (20.3 in)
1934173.5 mm (6.8 in)
1935137.7 mm (5.4 in)
1936223.8 mm (8.8 in)
1937248.7 mm (9.8 in)
1938111.5 mm (4.4 in)
1939328.4 mm (12.9 in)
1940190.5 mm (7.5 in)
1941152.0 mm (6.0 in)
1942109.2 mm (4.3 in)
1943207.5 mm (8.2 in)
1944141.0 mm (5.6 in)
1945117.9 mm (4.6 in)
1946199.3 mm (7.8 in)
1947125.8 mm (5.0 in)
1948191.8 mm (7.6 in)
1949161.5 mm (6.4 in)
1950156.8 mm (6.2 in)
1951143.0 mm (5.6 in)
1952122.9 mm (4.8 in)
1953121.7 mm (4.8 in)
1954194.0 mm (7.6 in)
1955314.5 mm (12.4 in)
1956204.7 mm (8.1 in)
195792.2 mm (3.6 in)
1959146.5 mm (5.8 in)
1960217.9 mm (8.6 in)
1961114.2 mm (4.5 in)
1962190.0 mm (7.5 in)
1963222.0 mm (8.7 in)
1964128.1 mm (5.0 in)
1966220.4 mm (8.7 in)
1967311.0 mm (12.2 in)
1968125.0 mm (4.9 in)
1969267.3 mm (10.5 in)
1970189.6 mm (7.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Ariyalur by year The longest dry spell of the year at Ariyalur, 1901 to 1970. The record is 151 days in 1942, marked on the chart; the median year is 69 days. 050100150200192019401960Record: 151 days in 1942
The longest dry spell of the year at Ariyalur, 1901 to 1970. The record is 151 days in 1942, marked on the chart; the median year is 69 days.
Longest dry spell (CDD) at Ariyalur by year
YearLongest dry spell (CDD)
190147 days
190242 days
190392 days
190497 days
190592 days
190673 days
190747 days
190871 days
190963 days
191081 days
191169 days
1912107 days
1913106 days
191495 days
191545 days
1916111 days
191781 days
191841 days
191971 days
1920102 days
192170 days
192236 days
192348 days
192467 days
192559 days
192639 days
192754 days
192854 days
192949 days
193044 days
193196 days
193249 days
193353 days
193482 days
193547 days
193648 days
193759 days
193839 days
193954 days
194070 days
194192 days
1942151 days
194399 days
194450 days
194555 days
194652 days
194748 days
1948102 days
194979 days
195068 days
195189 days
1952120 days
195346 days
195460 days
195599 days
195691 days
1957120 days
195962 days
196061 days
1961116 days
196269 days
196350 days
1964108 days
1966120 days
196765 days
196876 days
196995 days
197041 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

68 years, 1901 to 1970

A day with at least 98.3 mm (3.9 in) of rain is expected about once in 2 years. A day with at least 351.8 mm (13.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Ariyalur: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years98.3 mm (3.9 in)
5 years139.7 mm (5.5 in)
10 years175.4 mm (6.9 in)
25 years232.9 mm (9.2 in)
50 years286.7 mm (11.3 in)
100 years351.8 mm (13.9 in)Longer than the 68 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, 68 years of values from 1901 to 1970.

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: 329.2 mm (13.0 in) in 1933; 285.0 mm (11.2 in) in 1939; 284.0 mm (11.2 in) in 1913.

Download the Data

  • Data for Ariyalur standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Ariyalur 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). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).