Bihar Weather Records (IN004100400)
Record envelope, standing records and threshold days for Bihar (IN004100400), India, with 70 years of record.
Key Facts for Bihar
- Bihar (IN004100400) is a weather station in India at 25.18 latitude and 85.55 longitude, 49 m (161 ft) above sea level.
- The station reports from 1901 to 1970, 70 years of record.
- 0 records set at Bihar still stand.
- Records are tracked for prcp: an element needs 30 years of data to be eligible.
- Bihar set a daily record precipitation of 78.8 mm (3.1 in) on 31 July 1970.
About the Station
- Location: India, 25.18 latitude, 85.55 longitude.
- Elevation: 49 m (161 ft).
- Period of record: 1901 to 1970, 70 years.
- Eligible elements: prcp.
Daily Record Envelope and 2026
0 days at or beyond a record| 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| Year set | Standing records |
|---|
Wettest Day of Each Month
Jul: 308.1 mm (12.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 43.2 mm (1.7 in) | 1 January 1901 |
| Feb | 96.5 mm (3.8 in) | 1 February 1908 |
| Mar | 38.1 mm (1.5 in) | 12 March 1929 |
| Apr | 44.5 mm (1.8 in) | 22 April 1909 |
| May | 65.5 mm (2.6 in) | 28 May 1904 |
| Jun | 188.0 mm (7.4 in) | 20 June 1907 |
| Jul | 308.1 mm (12.1 in) | 22 July 1919 |
| Aug | 178.6 mm (7.0 in) | 10 August 1935 |
| Sep | 235.0 mm (9.3 in) | 7 September 1918 |
| Oct | 186.0 mm (7.3 in) | 2 October 1961 |
| Nov | 105.9 mm (4.2 in) | 19 November 1915 |
| Dec | 78.7 mm (3.1 in) | 13 December 1913 |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 31 July 1970 | Bihar, IN | daily rain | 78.8 mm (3.1 in) | 20.4 mm (0.8 in) | 44 years | 28 of 100 (Routine) |
| 17 June 1970 | Bihar, IN | daily rain | 40.0 mm (1.6 in) | 13.3 mm (0.5 in) | 48 years | 26 of 100 (Routine) |
| 22 May 1970 | Bihar, IN | daily rain | 27.6 mm (1.1 in) | 6.0 mm (0.24 in) | 44 years | 24 of 100 (Routine) |
| 26 January 1970 | Bihar, IN | daily rain | 12.4 mm (0.5 in) | 8.8 mm (0.35 in) | 40 years | 20 of 100 (Routine) |
| 20 January 1970 | Bihar, IN | daily rain | 30.4 mm (1.2 in) | 23.5 mm (0.9 in) | 44 years | 47 of 100 (Notable) |
| 10 September 1969 | Bihar, IN | daily rain | 78.0 mm (3.1 in) | 34.8 mm (1.4 in) | 63 years | 37 of 100 (Notable) |
| 21 August 1969 | Bihar, IN | daily rain | 90.0 mm (3.5 in) | 16.8 mm (0.7 in) | 44 years | 25 of 100 (Routine) |
| 20 August 1969 | Bihar, IN | daily rain | 126.6 mm (5.0 in) | 25.0 mm (1.0 in) | 44 years | 29 of 100 (Routine) |
| 5 June 1969 | Bihar, IN | daily rain | 87.2 mm (3.4 in) | 68.1 mm (2.7 in) | 32 years | 44 of 100 (Notable) |
| 4 June 1969 | Bihar, IN | daily rain | 21.4 mm (0.8 in) | 1.6 mm (0.06 in) | 67 years | 20 of 100 (Routine) |
| 3 June 1969 | Bihar, IN | daily rain | 47.4 mm (1.9 in) | 21.0 mm (0.8 in) | 44 years | 28 of 100 (Routine) |
| 1 May 1969 | Bihar, IN | daily rain | 45.4 mm (1.8 in) | 8.6 mm (0.34 in) | 28 years | 20 of 100 (Routine) |
| 21 April 1969 | Bihar, IN | daily rain | 14.6 mm (0.6 in) | 14.6 mm (0.6 in) | 68 years | 20 of 100 (Routine) |
| 27 December 1968 | Bihar, IN | daily rain | 13.0 mm (0.5 in) | 13.0 mm (0.5 in) | 67 years | 20 of 100 (Routine) |
| 30 October 1968 | Bihar, IN | daily rain | 46.8 mm (1.8 in) | 43.1 mm (1.7 in) | 7 years | 28 of 100 (Routine) |
| 4 October 1968 | Bihar, IN | daily rain | 47.5 mm (1.9 in) | 6.9 mm (0.27 in) | 24 years | 16 of 100 (Routine) |
| 3 October 1968 | Bihar, IN | daily rain | 42.0 mm (1.7 in) | 25.5 mm (1.0 in) | 52 years | 33 of 100 (Routine) |
| 30 June 1968 | Bihar, IN | daily rain | 135.4 mm (5.3 in) | 14.7 mm (0.6 in) | 62 years | 30 of 100 (Routine) |
| 2 June 1968 | Bihar, IN | daily rain | 22.5 mm (0.9 in) | 7.3 mm (0.29 in) | 50 years | 20 of 100 (Routine) |
| 19 September 1967 | Bihar, IN | daily rain | 43.4 mm (1.7 in) | 2.5 mm (0.10 in) | 42 years | 18 of 100 (Routine) |
Extremes by Year
1901 to 1970| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Wettest day (Rx1day) | 308.1 mm (12.1 in) | 1919 | 101.6 mm (4.0 in) | 66 |
| Wettest five days (Rx5day) | 519.0 mm (20.4 in) | 1918 | 180.8 mm (7.1 in) | 66 |
| Longest dry spell (CDD) | 173 days | 1951 | 83 days | 66 |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1901 | 58.9 mm (2.3 in) |
| 1902 | 64.5 mm (2.5 in) |
| 1903 | 59.4 mm (2.3 in) |
| 1904 | 65.5 mm (2.6 in) |
| 1905 | 62.2 mm (2.4 in) |
| 1906 | 120.7 mm (4.8 in) |
| 1907 | 190.0 mm (7.5 in) |
| 1908 | 96.5 mm (3.8 in) |
| 1909 | 98.0 mm (3.9 in) |
| 1910 | 137.7 mm (5.4 in) |
| 1911 | 101.6 mm (4.0 in) |
| 1912 | 67.1 mm (2.6 in) |
| 1913 | 94.0 mm (3.7 in) |
| 1914 | 155.7 mm (6.1 in) |
| 1915 | 105.9 mm (4.2 in) |
| 1916 | 156.0 mm (6.1 in) |
| 1917 | 68.1 mm (2.7 in) |
| 1918 | 235.0 mm (9.3 in) |
| 1919 | 308.1 mm (12.1 in) |
| 1920 | 111.8 mm (4.4 in) |
| 1921 | 138.2 mm (5.4 in) |
| 1922 | 95.3 mm (3.8 in) |
| 1923 | 86.4 mm (3.4 in) |
| 1924 | 73.2 mm (2.9 in) |
| 1925 | 101.6 mm (4.0 in) |
| 1926 | 101.6 mm (4.0 in) |
| 1927 | 35.6 mm (1.4 in) |
| 1928 | 92.7 mm (3.6 in) |
| 1929 | 127.0 mm (5.0 in) |
| 1930 | 177.8 mm (7.0 in) |
| 1931 | 152.4 mm (6.0 in) |
| 1932 | 114.3 mm (4.5 in) |
| 1933 | 120.7 mm (4.8 in) |
| 1934 | 143.3 mm (5.6 in) |
| 1935 | 178.6 mm (7.0 in) |
| 1936 | 107.2 mm (4.2 in) |
| 1937 | 74.9 mm (2.9 in) |
| 1938 | 139.7 mm (5.5 in) |
| 1939 | 80.0 mm (3.1 in) |
| 1940 | 43.2 mm (1.7 in) |
| 1941 | 139.7 mm (5.5 in) |
| 1942 | 110.5 mm (4.4 in) |
| 1943 | 109.2 mm (4.3 in) |
| 1944 | 63.5 mm (2.5 in) |
| 1945 | 50.8 mm (2.0 in) |
| 1946 | 40.6 mm (1.6 in) |
| 1947 | 25.4 mm (1.0 in) |
| 1948 | 92.5 mm (3.6 in) |
| 1949 | 76.2 mm (3.0 in) |
| 1950 | 92.2 mm (3.6 in) |
| 1951 | 106.7 mm (4.2 in) |
| 1952 | 0.0 mm (0.00 in) |
| 1953 | 91.4 mm (3.6 in) |
| 1954 | 5.1 mm (0.20 in) |
| 1955 | 83.8 mm (3.3 in) |
| 1958 | 69.4 mm (2.7 in) |
| 1961 | 186.0 mm (7.3 in) |
| 1962 | 70.6 mm (2.8 in) |
| 1963 | 146.8 mm (5.8 in) |
| 1964 | 105.0 mm (4.1 in) |
| 1965 | 210.0 mm (8.3 in) |
| 1966 | 150.0 mm (5.9 in) |
| 1967 | 109.0 mm (4.3 in) |
| 1968 | 135.4 mm (5.3 in) |
| 1969 | 126.6 mm (5.0 in) |
| 1970 | 78.8 mm (3.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1901 | 152.2 mm (6.0 in) |
| 1902 | 160.7 mm (6.3 in) |
| 1903 | 78.0 mm (3.1 in) |
| 1904 | 154.8 mm (6.1 in) |
| 1905 | 152.0 mm (6.0 in) |
| 1906 | 207.3 mm (8.2 in) |
| 1907 | 306.4 mm (12.1 in) |
| 1908 | 115.8 mm (4.6 in) |
| 1909 | 235.5 mm (9.3 in) |
| 1910 | 213.5 mm (8.4 in) |
| 1911 | 185.7 mm (7.3 in) |
| 1912 | 77.6 mm (3.1 in) |
| 1913 | 297.2 mm (11.7 in) |
| 1914 | 267.5 mm (10.5 in) |
| 1915 | 192.8 mm (7.6 in) |
| 1916 | 258.0 mm (10.2 in) |
| 1917 | 124.0 mm (4.9 in) |
| 1918 | 519.0 mm (20.4 in) |
| 1919 | 409.7 mm (16.1 in) |
| 1920 | 141.1 mm (5.6 in) |
| 1921 | 268.3 mm (10.6 in) |
| 1922 | 181.6 mm (7.1 in) |
| 1923 | 176.2 mm (6.9 in) |
| 1924 | 179.9 mm (7.1 in) |
| 1925 | 153.7 mm (6.1 in) |
| 1926 | 175.5 mm (6.9 in) |
| 1927 | 63.3 mm (2.5 in) |
| 1928 | 134.7 mm (5.3 in) |
| 1929 | 186.7 mm (7.4 in) |
| 1930 | 246.9 mm (9.7 in) |
| 1931 | 318.3 mm (12.5 in) |
| 1932 | 207.1 mm (8.2 in) |
| 1933 | 293.9 mm (11.6 in) |
| 1934 | 253.3 mm (10.0 in) |
| 1935 | 350.1 mm (13.8 in) |
| 1936 | 198.2 mm (7.8 in) |
| 1937 | 184.8 mm (7.3 in) |
| 1938 | 301.8 mm (11.9 in) |
| 1939 | 153.4 mm (6.0 in) |
| 1940 | 92.1 mm (3.6 in) |
| 1941 | 287.0 mm (11.3 in) |
| 1942 | 193.8 mm (7.6 in) |
| 1943 | 151.9 mm (6.0 in) |
| 1944 | 184.2 mm (7.3 in) |
| 1945 | 103.1 mm (4.1 in) |
| 1946 | 85.1 mm (3.4 in) |
| 1947 | 43.1 mm (1.7 in) |
| 1948 | 253.5 mm (10.0 in) |
| 1949 | 205.3 mm (8.1 in) |
| 1950 | 125.2 mm (4.9 in) |
| 1951 | 148.4 mm (5.8 in) |
| 1952 | 0.0 mm (0.00 in) |
| 1953 | 168.7 mm (6.6 in) |
| 1954 | 5.1 mm (0.20 in) |
| 1955 | 111.7 mm (4.4 in) |
| 1958 | 99.2 mm (3.9 in) |
| 1961 | 246.5 mm (9.7 in) |
| 1962 | 132.0 mm (5.2 in) |
| 1963 | 203.3 mm (8.0 in) |
| 1964 | 164.9 mm (6.5 in) |
| 1965 | 338.3 mm (13.3 in) |
| 1966 | 162.0 mm (6.4 in) |
| 1967 | 176.3 mm (6.9 in) |
| 1968 | 183.4 mm (7.2 in) |
| 1969 | 302.0 mm (11.9 in) |
| 1970 | 146.6 mm (5.8 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1901 | 73 days |
| 1902 | 95 days |
| 1903 | 46 days |
| 1904 | 82 days |
| 1905 | 92 days |
| 1906 | 61 days |
| 1907 | 96 days |
| 1908 | 90 days |
| 1909 | 91 days |
| 1910 | 48 days |
| 1911 | 86 days |
| 1912 | 56 days |
| 1913 | 61 days |
| 1914 | 98 days |
| 1915 | 42 days |
| 1916 | 60 days |
| 1917 | 61 days |
| 1918 | 151 days |
| 1919 | 81 days |
| 1920 | 94 days |
| 1921 | 171 days |
| 1922 | 90 days |
| 1923 | 87 days |
| 1924 | 113 days |
| 1925 | 93 days |
| 1926 | 37 days |
| 1927 | 53 days |
| 1928 | 76 days |
| 1929 | 60 days |
| 1930 | 94 days |
| 1931 | 97 days |
| 1932 | 75 days |
| 1933 | 71 days |
| 1934 | 72 days |
| 1935 | 117 days |
| 1936 | 57 days |
| 1937 | 83 days |
| 1938 | 80 days |
| 1939 | 87 days |
| 1940 | 86 days |
| 1941 | 80 days |
| 1942 | 93 days |
| 1943 | 95 days |
| 1944 | 86 days |
| 1945 | 69 days |
| 1946 | 72 days |
| 1947 | 120 days |
| 1948 | 80 days |
| 1949 | 76 days |
| 1950 | 98 days |
| 1951 | 173 days |
| 1952 | 121 days |
| 1953 | 92 days |
| 1954 | 65 days |
| 1955 | 152 days |
| 1958 | 72 days |
| 1961 | 34 days |
| 1962 | 53 days |
| 1963 | 56 days |
| 1964 | 130 days |
| 1965 | 85 days |
| 1966 | 81 days |
| 1967 | 102 days |
| 1968 | 153 days |
| 1969 | 50 days |
| 1970 | 83 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
57 years, 1901 to 1970A day with at least 102.2 mm (4.0 in) of rain is expected about once in 2 years. A day with at least 269.9 mm (10.6 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 102.2 mm (4.0 in) | |
| 5 years | 145.5 mm (5.7 in) | |
| 10 years | 174.8 mm (6.9 in) | |
| 25 years | 212.6 mm (8.4 in) | |
| 50 years | 241.1 mm (9.5 in) | |
| 100 years | 269.9 mm (10.6 in) | Longer than the 57 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, 57 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: 308.1 mm (12.1 in) in 1919; 235.0 mm (9.3 in) in 1918; 210.0 mm (8.3 in) in 1965.
Download the Data
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 . Last revised (2025-12-31).