Calcutta/Alipore Weather Records (IN024140300)

Record envelope, standing records and threshold days for Calcutta/Alipore (IN024140300), India, with 125 years of record.

Key Facts for Calcutta/Alipore

Calcutta/Alipore (IN024140300) is a weather station in India at 22.53 latitude and 88.33 longitude, 6 m (20 ft) above sea level.
The station reports from 1901 to 2025, 125 years of record.
1,232 records set at Calcutta/Alipore still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Calcutta/Alipore set a daily record precipitation of 81.0 mm (3.2 in) on 25 July 2025.

About the Station

Location: India, 22.53 latitude, 88.33 longitude.
Elevation: 6 m (20 ft).
Period of record: 1901 to 2025, 125 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

31 days at or beyond a record

The band shows the record high and record low for each calendar day at Calcutta/Alipore. The lines show the 2026 daily maximum and minimum. 31 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Calcutta/Alipore, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	29.5 C (85.1 F)	10.5 C (50.9 F)	23.4 C (74.1 F)	12.3 C (54.1 F)
Feb	30.5 C (86.9 F)	11.4 C (52.5 F)	n/a	15.1 C (59.2 F)
Mar	36.6 C (97.9 F)	15.5 C (59.9 F)	36.6 C (97.9 F)	18.2 C (64.8 F)
Apr	41.0 C (105.8 F)	19.2 C (66.6 F)	n/a	19.2 C (66.6 F)
May	38.0 C (100.4 F)	21.1 C (70.0 F)	36.3 C (97.3 F)	22.4 C (72.3 F)
Jun	38.6 C (101.5 F)	22.6 C (72.7 F)	37.7 C (99.9 F)	22.6 C (72.7 F)
Jul	35.3 C (95.5 F)	23.7 C (74.7 F)	n/a	24.8 C (76.6 F)
Aug	35.7 C (96.3 F)	23.5 C (74.3 F)	29.7 C (85.5 F)	23.5 C (74.3 F)
Sep	36.1 C (97.0 F)	23.6 C (74.5 F)	n/a	n/a
Oct	36.5 C (97.7 F)	19.6 C (67.3 F)	n/a	n/a
Nov	33.1 C (91.6 F)	14.6 C (58.3 F)	n/a	n/a
Dec	30.1 C (86.2 F)	9.4 C (48.9 F)	n/a	n/a

Which Years Hold Standing Records

1,232 standing records

1,232 records at Calcutta/Alipore still stand. 2022 holds the most, with 333.

Wettest Day of Each Month

Jun: 303.5 mm (11.9 in)

The wettest day on record for each calendar month at Calcutta/Alipore. The most was 303.5 mm (11.9 in) on 18 June 1908.

Record daily precipitation for each month at Calcutta/Alipore
Month	Record daily precipitation (mm)	Date
Jan	42.4 mm (1.7 in)	22 January 1906
Feb	83.1 mm (3.3 in)	25 February 2016
Mar	69.9 mm (2.8 in)	23 March 1907
Apr	107.4 mm (4.2 in)	19 April 1918
May	153.4 mm (6.0 in)	24 May 1932
Jun	303.5 mm (11.9 in)	18 June 1908
Jul	183.6 mm (7.2 in)	28 July 1905
Aug	226.6 mm (8.9 in)	7 August 1920
Sep	174.0 mm (6.9 in)	16 September 1946
Oct	206.0 mm (8.1 in)	1 October 1959
Nov	85.1 mm (3.4 in)	18 November 1950
Dec	74.9 mm (2.9 in)	6 December 2021

Period of Record Coverage

2015 to 2025

11 years of record at Calcutta/Alipore, 2015 to 2025. 11 years have data for under 90 percent of days and are left out of rankings: 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 and others.

Latest Records

Latest records at Calcutta/Alipore
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 July 2025	Calcutta/Alipore, IN	daily rain	81.0 mm (3.2 in)	15.0 mm (0.6 in)	60 years	35 of 100 (Notable)
1 May 2025	Calcutta/Alipore, IN	daily rain	30.0 mm (1.2 in)	13.4 mm (0.5 in)	64 years	36 of 100 (Notable)
29 April 2025	Calcutta/Alipore, IN	daily rain (Tie)	23.1 mm (0.9 in)	tie	111 years	10 of 100 (Routine)
26 October 2024	Calcutta/Alipore, IN	daily rain	118.1 mm (4.6 in)	101.6 mm (4.0 in)	93 years	77 of 100 (Major)
25 October 2024	Calcutta/Alipore, IN	daily rain	42.9 mm (1.7 in)	2.0 mm (0.08 in)	5 years	12 of 100 (Routine)
19 August 2024	Calcutta/Alipore, IN	daily rain	62.0 mm (2.4 in)	14.0 mm (0.6 in)	106 years	46 of 100 (Notable)
27 May 2024	Calcutta/Alipore, IN	daily rain	152.9 mm (6.0 in)	78.7 mm (3.1 in)	120 years	80 of 100 (Exceptional)
23 May 2024	Calcutta/Alipore, IN	daily rain	71.9 mm (2.8 in)	24.4 mm (1.0 in)	122 years	53 of 100 (Notable)
19 January 2024	Calcutta/Alipore, IN	daily rain	2.0 mm (0.08 in)	1.2 mm (0.05 in)	122 years	20 of 100 (Routine)
8 December 2023	Calcutta/Alipore, IN	daily rain	25.9 mm (1.0 in)	21.1 mm (0.8 in)	88 years	54 of 100 (Notable)
4 October 2023	Calcutta/Alipore, IN	daily rain	65.0 mm (2.6 in)	9.1 mm (0.36 in)	106 years	44 of 100 (Notable)
15 June 2023	Calcutta/Alipore, IN	daily rain	52.3 mm (2.1 in)	16.9 mm (0.7 in)	56 years	33 of 100 (Routine)
13 September 2022	Calcutta/Alipore, IN	daily rain	71.9 mm (2.8 in)	3.6 mm (0.14 in)	81 years	35 of 100 (Notable)
7 December 2021	Calcutta/Alipore, IN	daily rain	10.9 mm (0.4 in)	10.9 mm (0.4 in)	120 years	20 of 100 (Routine)
6 December 2021	Calcutta/Alipore, IN	monthly rain	74.9 mm (2.9 in)	42.6 mm (1.7 in)	84 years	85 of 100 (Exceptional)
19 October 2021	Calcutta/Alipore, IN	daily rain	37.1 mm (1.5 in)	1.8 mm (0.07 in)	66 years	29 of 100 (Routine)
29 September 2021	Calcutta/Alipore, IN	daily rain	87.1 mm (3.4 in)	1.8 mm (0.07 in)	84 years	35 of 100 (Notable)
20 September 2021	Calcutta/Alipore, IN	daily rain	142.0 mm (5.6 in)	83.1 mm (3.3 in)	84 years	74 of 100 (Major)
15 September 2021	Calcutta/Alipore, IN	daily rain	102.1 mm (4.0 in)	54.3 mm (2.1 in)	110 years	65 of 100 (Major)
8 September 2021	Calcutta/Alipore, IN	daily rain	46.0 mm (1.8 in)	6.6 mm (0.26 in)	111 years	43 of 100 (Notable)

Extremes by Year

1901 to 2025

Yearly extremes at Calcutta/Alipore: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.0 C (105.8 F)	2023	37.6 C (99.7 F)	11
Coldest night (TNn)	9.4 C (48.9 F)	2016	11.2 C (52.2 F)	11
Wettest day (Rx1day)	303.5 mm (11.9 in)	1908	111.3 mm (4.4 in)	81
Wettest five days (Rx5day)	558.8 mm (22.0 in)	1908	193.4 mm (7.6 in)	80
Longest dry spell (CDD)	98 days	1916	55 days	81

Hottest day (TXx)

The hottest day of the year at Calcutta/Alipore, 1901 to 2025. The record is 41.0 C (105.8 F) in 2023, marked on the chart; the median year is 37.6 C (99.7 F).

Hottest day (TXx) at Calcutta/Alipore by year
Year	Hottest day (TXx)
1901	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
2015	29.6 C (85.3 F)
2016	36.2 C (97.2 F)
2017	36.1 C (97.0 F)
2018	36.5 C (97.7 F)
2019	37.1 C (98.8 F)
2020	37.6 C (99.7 F)
2021	37.6 C (99.7 F)
2022	39.6 C (103.3 F)
2023	41.0 C (105.8 F)
2024	40.8 C (105.4 F)
2025	37.7 C (99.9 F)

Coldest night (TNn)

The coldest night of the year at Calcutta/Alipore, 1901 to 2025. The record is 9.4 C (48.9 F) in 2016, marked on the chart; the median year is 11.2 C (52.2 F).

Coldest night (TNn) at Calcutta/Alipore by year
Year	Coldest night (TNn)
1901	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
2015	12.6 C (54.7 F)
2016	9.4 C (48.9 F)
2017	11.2 C (52.2 F)
2018	10.5 C (50.9 F)
2019	11.1 C (52.0 F)
2020	11.2 C (52.2 F)
2021	11.2 C (52.2 F)
2022	11.7 C (53.1 F)
2023	10.9 C (51.6 F)
2024	11.8 C (53.2 F)
2025	12.3 C (54.1 F)

Wettest day (Rx1day)

The wettest day of the year at Calcutta/Alipore, 1901 to 2025. The record is 303.5 mm (11.9 in) in 1908, marked on the chart; the median year is 111.3 mm (4.4 in).

Wettest day (Rx1day) at Calcutta/Alipore by year
Year	Wettest day (Rx1day)
1901	140.7 mm (5.5 in)
1902	86.1 mm (3.4 in)
1903	161.3 mm (6.4 in)
1904	158.2 mm (6.2 in)
1905	183.6 mm (7.2 in)
1906	80.8 mm (3.2 in)
1907	218.9 mm (8.6 in)
1908	303.5 mm (11.9 in)
1909	93.5 mm (3.7 in)
1910	123.4 mm (4.9 in)
1911	47.8 mm (1.9 in)
1912	94.5 mm (3.7 in)
1913	144.5 mm (5.7 in)
1914	119.6 mm (4.7 in)
1915	97.5 mm (3.8 in)
1916	134.4 mm (5.3 in)
1917	105.2 mm (4.1 in)
1918	107.4 mm (4.2 in)
1919	185.2 mm (7.3 in)
1920	226.6 mm (8.9 in)
1921	91.2 mm (3.6 in)
1922	193.0 mm (7.6 in)
1923	86.9 mm (3.4 in)
1924	90.7 mm (3.6 in)
1925	123.2 mm (4.9 in)
1926	167.9 mm (6.6 in)
1927	87.6 mm (3.4 in)
1928	153.7 mm (6.1 in)
1929	80.3 mm (3.2 in)
1930	105.2 mm (4.1 in)
1931	79.2 mm (3.1 in)
1932	153.4 mm (6.0 in)
1933	146.8 mm (5.8 in)
1934	76.5 mm (3.0 in)
1935	97.5 mm (3.8 in)
1936	144.8 mm (5.7 in)
1937	126.0 mm (5.0 in)
1938	108.5 mm (4.3 in)
1939	116.8 mm (4.6 in)
1940	82.3 mm (3.2 in)
1941	115.1 mm (4.5 in)
1942	115.3 mm (4.5 in)
1943	90.4 mm (3.6 in)
1944	164.6 mm (6.5 in)
1945	107.7 mm (4.2 in)
1946	174.0 mm (6.9 in)
1947	145.5 mm (5.7 in)
1948	68.6 mm (2.7 in)
1949	144.8 mm (5.7 in)
1950	139.7 mm (5.5 in)
1951	111.3 mm (4.4 in)
1952	80.3 mm (3.2 in)
1953	74.9 mm (2.9 in)
1954	86.1 mm (3.4 in)
1955	88.6 mm (3.5 in)
1956	158.5 mm (6.2 in)
1957	121.9 mm (4.8 in)
1958	85.0 mm (3.3 in)
1959	206.0 mm (8.1 in)
1960	95.6 mm (3.8 in)
1961	125.5 mm (4.9 in)
1962	95.7 mm (3.8 in)
1963	92.6 mm (3.6 in)
1964	87.5 mm (3.4 in)
1965	124.9 mm (4.9 in)
1966	73.8 mm (2.9 in)
1967	98.5 mm (3.9 in)
1968	175.6 mm (6.9 in)
1969	91.0 mm (3.6 in)
1970	126.8 mm (5.0 in)
2015	0.3 mm (0.01 in)
2016	132.1 mm (5.2 in)
2017	106.9 mm (4.2 in)
2018	163.1 mm (6.4 in)
2019	137.9 mm (5.4 in)
2020	66.0 mm (2.6 in)
2021	150.1 mm (5.9 in)
2022	71.9 mm (2.8 in)
2023	84.1 mm (3.3 in)
2024	152.9 mm (6.0 in)
2025	84.1 mm (3.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Calcutta/Alipore, 1901 to 2025. The record is 558.8 mm (22.0 in) in 1908, marked on the chart; the median year is 193.4 mm (7.6 in).

Wettest five days (Rx5day) at Calcutta/Alipore by year
Year	Wettest five days (Rx5day)
1901	326.7 mm (12.9 in)
1902	131.0 mm (5.2 in)
1903	180.6 mm (7.1 in)
1904	301.0 mm (11.9 in)
1905	384.9 mm (15.2 in)
1906	149.6 mm (5.9 in)
1907	250.9 mm (9.9 in)
1908	558.8 mm (22.0 in)
1909	182.2 mm (7.2 in)
1910	189.2 mm (7.4 in)
1911	104.2 mm (4.1 in)
1912	163.6 mm (6.4 in)
1913	414.0 mm (16.3 in)
1914	185.9 mm (7.3 in)
1915	146.8 mm (5.8 in)
1916	232.2 mm (9.1 in)
1917	187.0 mm (7.4 in)
1918	137.1 mm (5.4 in)
1919	282.5 mm (11.1 in)
1920	349.0 mm (13.7 in)
1921	180.4 mm (7.1 in)
1922	333.0 mm (13.1 in)
1923	201.9 mm (7.9 in)
1924	204.8 mm (8.1 in)
1925	243.3 mm (9.6 in)
1926	334.0 mm (13.1 in)
1927	143.0 mm (5.6 in)
1928	236.7 mm (9.3 in)
1929	152.4 mm (6.0 in)
1930	223.8 mm (8.8 in)
1931	155.8 mm (6.1 in)
1932	228.3 mm (9.0 in)
1933	268.8 mm (10.6 in)
1934	157.1 mm (6.2 in)
1935	129.4 mm (5.1 in)
1936	245.0 mm (9.6 in)
1937	211.5 mm (8.3 in)
1938	201.9 mm (7.9 in)
1939	264.3 mm (10.4 in)
1940	172.9 mm (6.8 in)
1941	256.8 mm (10.1 in)
1942	168.4 mm (6.6 in)
1943	191.7 mm (7.5 in)
1944	207.5 mm (8.2 in)
1945	208.0 mm (8.2 in)
1946	291.8 mm (11.5 in)
1947	275.8 mm (10.9 in)
1948	190.1 mm (7.5 in)
1949	180.4 mm (7.1 in)
1950	189.8 mm (7.5 in)
1951	168.7 mm (6.6 in)
1952	154.7 mm (6.1 in)
1953	134.1 mm (5.3 in)
1954	118.1 mm (4.6 in)
1955	164.1 mm (6.5 in)
1956	377.5 mm (14.9 in)
1957	207.2 mm (8.2 in)
1958	117.8 mm (4.6 in)
1959	320.7 mm (12.6 in)
1960	331.2 mm (13.0 in)
1961	226.4 mm (8.9 in)
1962	152.1 mm (6.0 in)
1963	165.6 mm (6.5 in)
1964	195.0 mm (7.7 in)
1965	237.4 mm (9.3 in)
1966	149.3 mm (5.9 in)
1967	130.4 mm (5.1 in)
1968	339.1 mm (13.4 in)
1969	188.5 mm (7.4 in)
1970	460.3 mm (18.1 in)
2015	n/a
2016	182.1 mm (7.2 in)
2017	246.9 mm (9.7 in)
2018	197.1 mm (7.8 in)
2019	265.4 mm (10.4 in)
2020	128.0 mm (5.0 in)
2021	274.0 mm (10.8 in)
2022	144.0 mm (5.7 in)
2023	180.8 mm (7.1 in)
2024	164.2 mm (6.5 in)
2025	156.2 mm (6.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Calcutta/Alipore, 1901 to 2025. The record is 98 days in 1916, marked on the chart; the median year is 55 days.

Longest dry spell (CDD) at Calcutta/Alipore by year
Year	Longest dry spell (CDD)
1901	54 days
1902	71 days
1903	61 days
1904	38 days
1905	67 days
1906	58 days
1907	55 days
1908	88 days
1909	70 days
1910	67 days
1911	27 days
1912	37 days
1913	33 days
1914	75 days
1915	38 days
1916	98 days
1917	47 days
1918	76 days
1919	45 days
1920	81 days
1921	65 days
1922	94 days
1923	42 days
1924	51 days
1925	41 days
1926	65 days
1927	54 days
1928	70 days
1929	57 days
1930	41 days
1931	55 days
1932	50 days
1933	70 days
1934	43 days
1935	69 days
1936	53 days
1937	40 days
1938	51 days
1939	43 days
1940	63 days
1941	73 days
1942	50 days
1943	69 days
1944	61 days
1945	68 days
1946	58 days
1947	50 days
1948	32 days
1949	63 days
1950	53 days
1951	75 days
1952	53 days
1953	65 days
1954	63 days
1955	85 days
1956	58 days
1957	68 days
1958	54 days
1959	40 days
1960	68 days
1961	61 days
1962	61 days
1963	70 days
1964	44 days
1965	56 days
1966	75 days
1967	57 days
1968	46 days
1969	62 days
1970	48 days
2015	3 days
2016	4 days
2017	5 days
2018	3 days
2019	3 days
2020	4 days
2021	5 days
2022	4 days
2023	3 days
2024	4 days
2025	4 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

70 years, 1901 to 1970

A day with at least 113.0 mm (4.4 in) of rain is expected about once in 2 years. A day with at least 282.6 mm (11.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Calcutta/Alipore: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	113.0 mm (4.4 in)
5 years	151.3 mm (6.0 in)
10 years	179.3 mm (7.1 in)
25 years	217.9 mm (8.6 in)
50 years	249.2 mm (9.8 in)
100 years	282.6 mm (11.1 in)	Longer than the 70 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, 70 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: 303.5 mm (11.9 in) in 1908; 226.6 mm (8.9 in) in 1920; 218.9 mm (8.6 in) in 1907.

Download the Data

Data for Calcutta/Alipore standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Calcutta/Alipore 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

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