Islampur Weather Records (IN012210400)

Record envelope, standing records and threshold days for Islampur (IN012210400), India, with 70 years of record.

Key Facts for Islampur

Islampur (IN012210400) is a weather station in India at 17.05 latitude and 74.27 longitude, 551 m (1,808 ft) above sea level.
The station reports from 1901 to 1970, 70 years of record.
0 records set at Islampur still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Islampur set a daily record precipitation of 15.0 mm (0.6 in) on 19 August 1970.

About the Station

Location: India, 17.05 latitude, 74.27 longitude.
Elevation: 551 m (1,808 ft).
Period of record: 1901 to 1970, 70 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Islampur. 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 Islampur, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

0 standing records

0 records at Islampur still stand.

All-Time Record Progression

1 new records

1 all-time records were set at Islampur between 14 November 1966 and 14 November 1966. Each dot is a new record.

Wettest Day of Each Month

Nov: 161.0 mm (6.3 in)

The wettest day on record for each calendar month at Islampur. The most was 161.0 mm (6.3 in) on 14 November 1966.

Record daily precipitation for each month at Islampur
Month	Record daily precipitation (mm)	Date
Jan	46.2 mm (1.8 in)	9 January 1941
Feb	12.2 mm (0.5 in)	25 February 1938
Mar	39.0 mm (1.5 in)	29 March 1963
Apr	86.4 mm (3.4 in)	23 April 1955
May	127.0 mm (5.0 in)	4 May 1966
Jun	83.1 mm (3.3 in)	28 June 1926
Jul	111.8 mm (4.4 in)	16 July 1954
Aug	140.7 mm (5.5 in)	21 August 1910
Sep	116.3 mm (4.6 in)	17 September 1929
Oct	90.2 mm (3.6 in)	1 October 1956
Nov	161.0 mm (6.3 in)	14 November 1966
Dec	64.3 mm (2.5 in)	7 December 1902

Latest Records

Latest records at Islampur
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
19 August 1970	Islampur, IN	daily rain	15.0 mm (0.6 in)	4.8 mm (0.19 in)	24 years	18 of 100 (Routine)
18 August 1970	Islampur, IN	daily rain	25.0 mm (1.0 in)	10.3 mm (0.4 in)	64 years	35 of 100 (Notable)
10 August 1970	Islampur, IN	daily rain	31.0 mm (1.2 in)	8.9 mm (0.35 in)	21 years	20 of 100 (Routine)
12 December 1969	Islampur, IN	daily rain	3.0 mm (0.12 in)	0.2 mm (0.01 in)	68 years	20 of 100 (Routine)
31 August 1969	Islampur, IN	daily rain	38.0 mm (1.5 in)	5.5 mm (0.22 in)	11 years	13 of 100 (Routine)
26 August 1969	Islampur, IN	daily rain	53.0 mm (2.1 in)	17.4 mm (0.7 in)	63 years	39 of 100 (Notable)
1 August 1969	Islampur, IN	daily rain	60.0 mm (2.4 in)	5.4 mm (0.21 in)	36 years	21 of 100 (Routine)
31 July 1969	Islampur, IN	daily rain	39.0 mm (1.5 in)	4.2 mm (0.17 in)	35 years	19 of 100 (Routine)
8 October 1968	Islampur, IN	daily rain	33.0 mm (1.3 in)	5.6 mm (0.22 in)	37 years	20 of 100 (Routine)
11 September 1968	Islampur, IN	daily rain	51.0 mm (2.0 in)	2.7 mm (0.11 in)	11 years	10 of 100 (Routine)
6 June 1968	Islampur, IN	daily rain	39.0 mm (1.5 in)	4.2 mm (0.17 in)	40 years	21 of 100 (Routine)
16 December 1967	Islampur, IN	daily rain	9.0 mm (0.35 in)	9.0 mm (0.35 in)	65 years	20 of 100 (Routine)
15 December 1967	Islampur, IN	daily rain	22.0 mm (0.9 in)	12.6 mm (0.5 in)	36 years	20 of 100 (Routine)
28 July 1967	Islampur, IN	daily rain	76.0 mm (3.0 in)	6.1 mm (0.24 in)	33 years	21 of 100 (Routine)
27 July 1967	Islampur, IN	daily rain	31.0 mm (1.2 in)	0.5 mm (0.02 in)	16 years	11 of 100 (Routine)
30 June 1967	Islampur, IN	daily rain	34.0 mm (1.3 in)	9.9 mm (0.39 in)	8 years	15 of 100 (Routine)
17 June 1967	Islampur, IN	daily rain	50.0 mm (2.0 in)	6.8 mm (0.27 in)	24 years	18 of 100 (Routine)
3 April 1967	Islampur, IN	daily rain	12.0 mm (0.5 in)	12.0 mm (0.5 in)	65 years	20 of 100 (Routine)
14 November 1966	Islampur, IN	all-time rain	161.0 mm (6.3 in)	20.3 mm (0.8 in)	56 years	56 of 100 (Notable)
13 November 1966	Islampur, IN	daily rain	40.0 mm (1.6 in)	27.3 mm (1.1 in)	40 years	37 of 100 (Notable)

Extremes by Year

1901 to 1970

Yearly extremes at Islampur: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	161.0 mm (6.3 in)	1966	66.0 mm (2.6 in)	69
Wettest five days (Rx5day)	236.0 mm (9.3 in)	1966	117.1 mm (4.6 in)	69
Longest dry spell (CDD)	159 days	1935	97 days	69

Wettest day (Rx1day)

The wettest day of the year at Islampur, 1901 to 1970. The record is 161.0 mm (6.3 in) in 1966, marked on the chart; the median year is 66.0 mm (2.6 in).

Wettest day (Rx1day) at Islampur by year
Year	Wettest day (Rx1day)
1901	49.5 mm (1.9 in)
1902	64.3 mm (2.5 in)
1903	85.1 mm (3.4 in)
1904	30.0 mm (1.2 in)
1905	66.8 mm (2.6 in)
1906	61.0 mm (2.4 in)
1907	55.6 mm (2.2 in)
1908	45.7 mm (1.8 in)
1909	32.5 mm (1.3 in)
1910	140.7 mm (5.5 in)
1911	24.9 mm (1.0 in)
1912	85.3 mm (3.4 in)
1913	70.4 mm (2.8 in)
1914	120.4 mm (4.7 in)
1915	74.4 mm (2.9 in)
1916	67.3 mm (2.6 in)
1917	77.5 mm (3.1 in)
1918	53.8 mm (2.1 in)
1919	39.1 mm (1.5 in)
1920	41.1 mm (1.6 in)
1921	53.6 mm (2.1 in)
1922	68.1 mm (2.7 in)
1923	47.0 mm (1.9 in)
1924	89.2 mm (3.5 in)
1925	52.1 mm (2.1 in)
1926	83.1 mm (3.3 in)
1927	86.4 mm (3.4 in)
1928	53.1 mm (2.1 in)
1929	116.3 mm (4.6 in)
1930	75.4 mm (3.0 in)
1931	87.9 mm (3.5 in)
1932	128.0 mm (5.0 in)
1933	80.5 mm (3.2 in)
1934	64.8 mm (2.6 in)
1935	49.8 mm (2.0 in)
1936	65.8 mm (2.6 in)
1937	84.1 mm (3.3 in)
1938	77.0 mm (3.0 in)
1939	68.1 mm (2.7 in)
1940	38.4 mm (1.5 in)
1941	63.5 mm (2.5 in)
1942	43.7 mm (1.7 in)
1943	70.6 mm (2.8 in)
1944	66.8 mm (2.6 in)
1945	39.1 mm (1.5 in)
1946	54.6 mm (2.1 in)
1947	67.3 mm (2.6 in)
1948	45.2 mm (1.8 in)
1949	67.3 mm (2.6 in)
1950	70.9 mm (2.8 in)
1951	61.5 mm (2.4 in)
1952	38.1 mm (1.5 in)
1953	66.3 mm (2.6 in)
1954	111.8 mm (4.4 in)
1955	86.4 mm (3.4 in)
1956	90.2 mm (3.6 in)
1957	48.3 mm (1.9 in)
1958	66.0 mm (2.6 in)
1959	61.7 mm (2.4 in)
1960	43.1 mm (1.7 in)
1961	105.0 mm (4.1 in)
1962	50.0 mm (2.0 in)
1963	73.0 mm (2.9 in)
1964	55.0 mm (2.2 in)
1966	161.0 mm (6.3 in)
1967	76.0 mm (3.0 in)
1968	52.0 mm (2.0 in)
1969	60.0 mm (2.4 in)
1970	35.0 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Islampur, 1901 to 1970. The record is 236.0 mm (9.3 in) in 1966, marked on the chart; the median year is 117.1 mm (4.6 in).

Wettest five days (Rx5day) at Islampur by year
Year	Wettest five days (Rx5day)
1901	105.7 mm (4.2 in)
1902	126.9 mm (5.0 in)
1903	119.4 mm (4.7 in)
1904	64.2 mm (2.5 in)
1905	83.0 mm (3.3 in)
1906	136.0 mm (5.4 in)
1907	186.7 mm (7.4 in)
1908	91.5 mm (3.6 in)
1909	77.5 mm (3.1 in)
1910	147.1 mm (5.8 in)
1911	51.1 mm (2.0 in)
1912	186.4 mm (7.3 in)
1913	70.9 mm (2.8 in)
1914	186.9 mm (7.4 in)
1915	144.0 mm (5.7 in)
1916	91.4 mm (3.6 in)
1917	118.6 mm (4.7 in)
1918	96.2 mm (3.8 in)
1919	131.1 mm (5.2 in)
1920	52.2 mm (2.1 in)
1921	92.2 mm (3.6 in)
1922	108.5 mm (4.3 in)
1923	72.4 mm (2.9 in)
1924	136.6 mm (5.4 in)
1925	98.7 mm (3.9 in)
1926	116.1 mm (4.6 in)
1927	150.4 mm (5.9 in)
1928	122.2 mm (4.8 in)
1929	184.6 mm (7.3 in)
1930	107.2 mm (4.2 in)
1931	185.2 mm (7.3 in)
1932	217.9 mm (8.6 in)
1933	144.8 mm (5.7 in)
1934	121.2 mm (4.8 in)
1935	116.1 mm (4.6 in)
1936	177.2 mm (7.0 in)
1937	90.2 mm (3.6 in)
1938	157.5 mm (6.2 in)
1939	104.8 mm (4.1 in)
1940	58.4 mm (2.3 in)
1941	130.8 mm (5.1 in)
1942	131.1 mm (5.2 in)
1943	117.6 mm (4.6 in)
1944	117.1 mm (4.6 in)
1945	112.0 mm (4.4 in)
1946	121.4 mm (4.8 in)
1947	133.9 mm (5.3 in)
1948	92.0 mm (3.6 in)
1949	140.4 mm (5.5 in)
1950	106.9 mm (4.2 in)
1951	80.8 mm (3.2 in)
1952	83.6 mm (3.3 in)
1953	117.1 mm (4.6 in)
1954	151.9 mm (6.0 in)
1955	120.6 mm (4.7 in)
1956	180.3 mm (7.1 in)
1957	81.6 mm (3.2 in)
1958	115.0 mm (4.5 in)
1959	93.4 mm (3.7 in)
1960	87.0 mm (3.4 in)
1961	209.8 mm (8.3 in)
1962	104.0 mm (4.1 in)
1963	134.0 mm (5.3 in)
1964	98.5 mm (3.9 in)
1966	236.0 mm (9.3 in)
1967	193.0 mm (7.6 in)
1968	109.0 mm (4.3 in)
1969	152.0 mm (6.0 in)
1970	81.0 mm (3.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Islampur, 1901 to 1970. The record is 159 days in 1935, marked on the chart; the median year is 97 days.

Longest dry spell (CDD) at Islampur by year
Year	Longest dry spell (CDD)
1901	55 days
1902	91 days
1903	151 days
1904	87 days
1905	107 days
1906	102 days
1907	98 days
1908	80 days
1909	122 days
1910	143 days
1911	84 days
1912	113 days
1913	102 days
1914	90 days
1915	65 days
1916	97 days
1917	55 days
1918	64 days
1919	120 days
1920	101 days
1921	97 days
1922	117 days
1923	73 days
1924	92 days
1925	76 days
1926	123 days
1927	115 days
1928	66 days
1929	88 days
1930	108 days
1931	89 days
1932	106 days
1933	72 days
1934	99 days
1935	159 days
1936	130 days
1937	108 days
1938	55 days
1939	80 days
1940	108 days
1941	82 days
1942	102 days
1943	126 days
1944	126 days
1945	107 days
1946	93 days
1947	49 days
1948	69 days
1949	89 days
1950	90 days
1951	108 days
1952	101 days
1953	95 days
1954	75 days
1955	66 days
1956	99 days
1957	101 days
1958	102 days
1959	103 days
1960	53 days
1961	94 days
1962	126 days
1963	87 days
1964	85 days
1966	122 days
1967	87 days
1968	30 days
1969	88 days
1970	115 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 63.7 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 151.2 mm (6.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Islampur: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	63.7 mm (2.5 in)
5 years	86.2 mm (3.4 in)
10 years	101.5 mm (4.0 in)
25 years	121.2 mm (4.8 in)
50 years	136.1 mm (5.4 in)
100 years	151.2 mm (6.0 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: 161.0 mm (6.3 in) in 1966; 140.7 mm (5.5 in) in 1910; 128.0 mm (5.0 in) in 1932.

Download the Data

Data for Islampur standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Islampur 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 2026-10-16 (16 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).

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a