Patna Obsy Weather Records (IN004100100)

Record envelope, standing records and threshold days for Patna Obsy (IN004100100), India, with 67 years of record.

Key Facts for Patna Obsy

Patna Obsy (IN004100100) is a weather station in India at 25.62 latitude and 85.17 longitude, 53 m (174 ft) above sea level.
The station reports from 1901 to 1967, 67 years of record.
0 records set at Patna Obsy still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Patna Obsy set a daily record precipitation of 2.8 mm (0.11 in) on 24 December 1967.

About the Station

Location: India, 25.62 latitude, 85.17 longitude.
Elevation: 53 m (174 ft).
Period of record: 1901 to 1967, 67 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 Patna Obsy. 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 Patna Obsy, 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 Patna Obsy still stand.

Wettest Day of Each Month

Sep: 366.0 mm (14.4 in)

The wettest day on record for each calendar month at Patna Obsy. The most was 366.0 mm (14.4 in) on 8 September 1918.

Record daily precipitation for each month at Patna Obsy
Month	Record daily precipitation (mm)	Date
Jan	57.4 mm (2.3 in)	9 January 1957
Feb	40.6 mm (1.6 in)	6 February 1949
Mar	51.8 mm (2.0 in)	9 March 1905
Apr	47.0 mm (1.9 in)	25 April 1962
May	60.4 mm (2.4 in)	31 May 1959
Jun	187.2 mm (7.4 in)	7 June 1916
Jul	151.6 mm (6.0 in)	31 July 1940
Aug	165.4 mm (6.5 in)	29 August 1914
Sep	366.0 mm (14.4 in)	8 September 1918
Oct	125.2 mm (4.9 in)	9 October 1964
Nov	63.8 mm (2.5 in)	19 November 1915
Dec	73.7 mm (2.9 in)	21 December 1929

Latest Records

Latest records at Patna Obsy
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 December 1967	Patna Obsy, IN	daily rain	2.8 mm (0.11 in)	1.8 mm (0.07 in)	37 years	18 of 100 (Routine)
20 September 1967	Patna Obsy, IN	daily rain	355.8 mm (14.0 in)	283.7 mm (11.2 in)	10 years	49 of 100 (Notable)
19 September 1967	Patna Obsy, IN	daily rain	137.4 mm (5.4 in)	59.2 mm (2.3 in)	53 years	42 of 100 (Notable)
26 August 1967	Patna Obsy, IN	daily rain	112.2 mm (4.4 in)	15.2 mm (0.6 in)	48 years	26 of 100 (Routine)
15 July 1967	Patna Obsy, IN	daily rain	81.0 mm (3.2 in)	8.9 mm (0.35 in)	42 years	22 of 100 (Routine)
5 July 1967	Patna Obsy, IN	daily rain	100.0 mm (3.9 in)	23.3 mm (0.9 in)	42 years	28 of 100 (Routine)
26 May 1967	Patna Obsy, IN	daily rain	13.8 mm (0.5 in)	9.7 mm (0.38 in)	61 years	20 of 100 (Routine)
27 April 1967	Patna Obsy, IN	daily rain	18.4 mm (0.7 in)	12.1 mm (0.5 in)	8 years	20 of 100 (Routine)
25 March 1967	Patna Obsy, IN	daily rain	4.2 mm (0.17 in)	0.4 mm (0.02 in)	40 years	18 of 100 (Routine)
21 March 1967	Patna Obsy, IN	daily rain	14.8 mm (0.6 in)	6.7 mm (0.26 in)	26 years	20 of 100 (Routine)
15 March 1967	Patna Obsy, IN	daily rain	22.8 mm (0.9 in)	14.7 mm (0.6 in)	46 years	20 of 100 (Routine)
1 December 1966	Patna Obsy, IN	daily rain	0.4 mm (0.02 in)	0.4 mm (0.02 in)	64 years	20 of 100 (Routine)
17 November 1966	Patna Obsy, IN	daily rain	18.8 mm (0.7 in)	18.8 mm (0.7 in)	64 years	20 of 100 (Routine)
16 November 1966	Patna Obsy, IN	daily rain	10.4 mm (0.4 in)	6.8 mm (0.27 in)	39 years	20 of 100 (Routine)
17 June 1966	Patna Obsy, IN	daily rain	54.8 mm (2.2 in)	16.6 mm (0.7 in)	5 years	14 of 100 (Routine)
8 May 1966	Patna Obsy, IN	daily rain	28.0 mm (1.1 in)	17.8 mm (0.7 in)	17 years	24 of 100 (Routine)
14 February 1966	Patna Obsy, IN	daily rain	15.9 mm (0.6 in)	14.1 mm (0.6 in)	34 years	20 of 100 (Routine)
4 January 1966	Patna Obsy, IN	daily rain	27.4 mm (1.1 in)	25.4 mm (1.0 in)	4 years	33 of 100 (Routine)
25 September 1965	Patna Obsy, IN	daily rain	108.4 mm (4.3 in)	30.9 mm (1.2 in)	26 years	23 of 100 (Routine)
20 August 1965	Patna Obsy, IN	daily rain	144.0 mm (5.7 in)	34.0 mm (1.3 in)	2 years	19 of 100 (Routine)

Extremes by Year

1901 to 1967

Yearly extremes at Patna Obsy: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	366.0 mm (14.4 in)	1918	113.0 mm (4.4 in)	67
Wettest five days (Rx5day)	561.8 mm (22.1 in)	1967	194.8 mm (7.7 in)	67
Longest dry spell (CDD)	136 days	1921	76 days	67

Wettest day (Rx1day)

The wettest day of the year at Patna Obsy, 1901 to 1967. The record is 366.0 mm (14.4 in) in 1918, marked on the chart; the median year is 113.0 mm (4.4 in).

Wettest day (Rx1day) at Patna Obsy by year
Year	Wettest day (Rx1day)
1901	79.2 mm (3.1 in)
1902	201.4 mm (7.9 in)
1903	68.6 mm (2.7 in)
1904	122.9 mm (4.8 in)
1905	123.4 mm (4.9 in)
1906	128.8 mm (5.1 in)
1907	149.4 mm (5.9 in)
1908	160.5 mm (6.3 in)
1909	103.4 mm (4.1 in)
1910	131.8 mm (5.2 in)
1911	89.9 mm (3.5 in)
1912	78.2 mm (3.1 in)
1913	136.4 mm (5.4 in)
1914	165.4 mm (6.5 in)
1915	266.2 mm (10.5 in)
1916	187.2 mm (7.4 in)
1917	164.6 mm (6.5 in)
1918	366.0 mm (14.4 in)
1919	89.9 mm (3.5 in)
1920	102.6 mm (4.0 in)
1921	87.4 mm (3.4 in)
1922	99.8 mm (3.9 in)
1923	54.4 mm (2.1 in)
1924	115.3 mm (4.5 in)
1925	42.2 mm (1.7 in)
1926	109.7 mm (4.3 in)
1927	124.5 mm (4.9 in)
1928	85.9 mm (3.4 in)
1929	113.0 mm (4.4 in)
1930	82.6 mm (3.3 in)
1931	97.5 mm (3.8 in)
1932	163.3 mm (6.4 in)
1933	83.8 mm (3.3 in)
1934	70.6 mm (2.8 in)
1935	138.4 mm (5.4 in)
1936	160.5 mm (6.3 in)
1937	116.1 mm (4.6 in)
1938	90.9 mm (3.6 in)
1939	85.1 mm (3.4 in)
1940	151.6 mm (6.0 in)
1941	97.3 mm (3.8 in)
1942	218.4 mm (8.6 in)
1943	51.8 mm (2.0 in)
1944	73.2 mm (2.9 in)
1945	132.6 mm (5.2 in)
1946	85.3 mm (3.4 in)
1947	101.1 mm (4.0 in)
1948	160.0 mm (6.3 in)
1949	134.6 mm (5.3 in)
1950	93.2 mm (3.7 in)
1951	84.8 mm (3.3 in)
1952	140.2 mm (5.5 in)
1953	98.6 mm (3.9 in)
1954	78.0 mm (3.1 in)
1955	127.8 mm (5.0 in)
1956	72.1 mm (2.8 in)
1957	133.9 mm (5.3 in)
1958	140.0 mm (5.5 in)
1959	136.8 mm (5.4 in)
1960	162.0 mm (6.4 in)
1961	58.0 mm (2.3 in)
1962	69.2 mm (2.7 in)
1963	110.4 mm (4.3 in)
1964	137.4 mm (5.4 in)
1965	144.0 mm (5.7 in)
1966	69.2 mm (2.7 in)
1967	355.8 mm (14.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Patna Obsy, 1901 to 1967. The record is 561.8 mm (22.1 in) in 1967, marked on the chart; the median year is 194.8 mm (7.7 in).

Wettest five days (Rx5day) at Patna Obsy by year
Year	Wettest five days (Rx5day)
1901	91.7 mm (3.6 in)
1902	252.7 mm (9.9 in)
1903	102.4 mm (4.0 in)
1904	253.7 mm (10.0 in)
1905	282.7 mm (11.1 in)
1906	223.8 mm (8.8 in)
1907	282.9 mm (11.1 in)
1908	171.1 mm (6.7 in)
1909	228.6 mm (9.0 in)
1910	363.7 mm (14.3 in)
1911	160.3 mm (6.3 in)
1912	156.2 mm (6.1 in)
1913	369.5 mm (14.5 in)
1914	469.8 mm (18.5 in)
1915	284.5 mm (11.2 in)
1916	247.6 mm (9.7 in)
1917	204.0 mm (8.0 in)
1918	550.9 mm (21.7 in)
1919	188.7 mm (7.4 in)
1920	155.0 mm (6.1 in)
1921	224.6 mm (8.8 in)
1922	141.7 mm (5.6 in)
1923	119.2 mm (4.7 in)
1924	194.8 mm (7.7 in)
1925	108.3 mm (4.3 in)
1926	164.0 mm (6.5 in)
1927	180.9 mm (7.1 in)
1928	120.7 mm (4.8 in)
1929	187.0 mm (7.4 in)
1930	230.4 mm (9.1 in)
1931	183.9 mm (7.2 in)
1932	179.8 mm (7.1 in)
1933	211.0 mm (8.3 in)
1934	238.3 mm (9.4 in)
1935	230.7 mm (9.1 in)
1936	257.7 mm (10.1 in)
1937	237.8 mm (9.4 in)
1938	171.9 mm (6.8 in)
1939	210.6 mm (8.3 in)
1940	183.5 mm (7.2 in)
1941	210.3 mm (8.3 in)
1942	241.5 mm (9.5 in)
1943	95.8 mm (3.8 in)
1944	182.9 mm (7.2 in)
1945	166.6 mm (6.6 in)
1946	97.3 mm (3.8 in)
1947	193.1 mm (7.6 in)
1948	274.0 mm (10.8 in)
1949	224.0 mm (8.8 in)
1950	200.9 mm (7.9 in)
1951	166.5 mm (6.6 in)
1952	257.8 mm (10.1 in)
1953	170.0 mm (6.7 in)
1954	127.7 mm (5.0 in)
1955	209.2 mm (8.2 in)
1956	169.1 mm (6.7 in)
1957	143.6 mm (5.7 in)
1958	151.8 mm (6.0 in)
1959	203.8 mm (8.0 in)
1960	218.6 mm (8.6 in)
1961	153.2 mm (6.0 in)
1962	123.4 mm (4.9 in)
1963	160.6 mm (6.3 in)
1964	295.8 mm (11.6 in)
1965	237.5 mm (9.4 in)
1966	151.9 mm (6.0 in)
1967	561.8 mm (22.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Patna Obsy, 1901 to 1967. The record is 136 days in 1921, marked on the chart; the median year is 76 days.

Longest dry spell (CDD) at Patna Obsy by year
Year	Longest dry spell (CDD)
1901	58 days
1902	66 days
1903	83 days
1904	60 days
1905	89 days
1906	30 days
1907	100 days
1908	92 days
1909	67 days
1910	49 days
1911	37 days
1912	44 days
1913	66 days
1914	80 days
1915	39 days
1916	81 days
1917	86 days
1918	106 days
1919	83 days
1920	106 days
1921	136 days
1922	76 days
1923	59 days
1924	109 days
1925	92 days
1926	68 days
1927	52 days
1928	80 days
1929	60 days
1930	48 days
1931	55 days
1932	75 days
1933	70 days
1934	71 days
1935	112 days
1936	64 days
1937	85 days
1938	81 days
1939	67 days
1940	75 days
1941	91 days
1942	75 days
1943	71 days
1944	71 days
1945	72 days
1946	48 days
1947	85 days
1948	78 days
1949	61 days
1950	94 days
1951	128 days
1952	98 days
1953	90 days
1954	69 days
1955	80 days
1956	57 days
1957	93 days
1958	80 days
1959	62 days
1960	89 days
1961	92 days
1962	61 days
1963	46 days
1964	82 days
1965	77 days
1966	82 days
1967	79 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

67 years, 1901 to 1967

A day with at least 109.9 mm (4.3 in) of rain is expected about once in 2 years. A day with at least 333.0 mm (13.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Patna Obsy: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	109.9 mm (4.3 in)
5 years	156.4 mm (6.2 in)
10 years	191.9 mm (7.6 in)
25 years	242.9 mm (9.6 in)
50 years	285.7 mm (11.2 in)
100 years	333.0 mm (13.1 in)	Longer than the 67 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, 67 years of values from 1901 to 1967.

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: 366.0 mm (14.4 in) in 1918; 355.8 mm (14.0 in) in 1967; 266.2 mm (10.5 in) in 1915.

Download the Data

Data for Patna Obsy standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Patna Obsy 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 2026-10-14 (14 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