Jackson 4 NW Weather Records (USW00013956)
Record envelope, standing records and threshold days for Jackson 4 NW (USW00013956), Mississippi, United States, with 76 years of record.
Key Facts for Jackson 4 NW
- Jackson 4 NW (USW00013956) is a weather station in Mississippi, United States at 32.33 latitude and -90.23 longitude, 98 m (322 ft) above sea level.
- The station reports from 1896 to 1971, 76 years of record.
- 1,464 records set at Jackson 4 NW still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Jackson 4 NW tied a daily record low minimum temperature of 12.2 C (54.0 F) on 30 May 1971.
About the Station
- Location: Mississippi, United States, 32.33 latitude, -90.23 longitude.
- Elevation: 98 m (322 ft).
- Period of record: 1896 to 1971, 76 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
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 | 29.4 C (84.9 F) | -20.6 C (-5.1 F) | n/a | n/a |
| Feb | 31.7 C (89.1 F) | -17.2 C (1.0 F) | n/a | n/a |
| Mar | 35.0 C (95.0 F) | -8.3 C (17.1 F) | n/a | n/a |
| Apr | 34.4 C (93.9 F) | -1.1 C (30.0 F) | n/a | n/a |
| May | 37.8 C (100.0 F) | 3.9 C (39.0 F) | n/a | n/a |
| Jun | 40.6 C (105.1 F) | 8.9 C (48.0 F) | n/a | n/a |
| Jul | 41.7 C (107.1 F) | 11.1 C (52.0 F) | n/a | n/a |
| Aug | 41.1 C (106.0 F) | 12.2 C (54.0 F) | n/a | n/a |
| Sep | 41.7 C (107.1 F) | 3.3 C (37.9 F) | n/a | n/a |
| Oct | 36.7 C (98.1 F) | -3.3 C (26.1 F) | n/a | n/a |
| Nov | 31.7 C (89.1 F) | -9.4 C (15.1 F) | n/a | n/a |
| Dec | 28.9 C (84.0 F) | -13.3 C (8.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1896 | 32 |
| 1897 | 29 |
| 1898 | 20 |
| 1899 | 40 |
| 1900 | 24 |
| 1901 | 24 |
| 1902 | 50 |
| 1903 | 20 |
| 1904 | 18 |
| 1905 | 21 |
| 1906 | 11 |
| 1907 | 27 |
| 1908 | 24 |
| 1909 | 21 |
| 1910 | 16 |
| 1911 | 45 |
| 1912 | 17 |
| 1913 | 15 |
| 1914 | 23 |
| 1915 | 15 |
| 1916 | 22 |
| 1917 | 40 |
| 1918 | 30 |
| 1919 | 17 |
| 1920 | 31 |
| 1921 | 31 |
| 1922 | 25 |
| 1923 | 17 |
| 1924 | 29 |
| 1925 | 40 |
| 1926 | 9 |
| 1927 | 32 |
| 1928 | 14 |
| 1929 | 19 |
| 1930 | 31 |
| 1931 | 17 |
| 1932 | 31 |
| 1933 | 14 |
| 1934 | 13 |
| 1935 | 18 |
| 1936 | 13 |
| 1937 | 25 |
| 1938 | 5 |
| 1939 | 8 |
| 1940 | 28 |
| 1941 | 7 |
| 1942 | 9 |
| 1943 | 28 |
| 1944 | 6 |
| 1945 | 6 |
| 1946 | 15 |
| 1947 | 14 |
| 1948 | 23 |
| 1949 | 12 |
| 1950 | 19 |
| 1951 | 26 |
| 1952 | 23 |
| 1953 | 14 |
| 1954 | 19 |
| 1955 | 18 |
| 1956 | 9 |
| 1957 | 18 |
| 1958 | 18 |
| 1959 | 8 |
| 1960 | 11 |
| 1961 | 19 |
| 1962 | 14 |
| 1963 | 11 |
| 1964 | 2 |
| 1965 | 9 |
| 1966 | 7 |
| 1967 | 16 |
| 1968 | 8 |
| 1969 | 4 |
| 1970 | 16 |
| 1971 | 4 |
All-Time Record Progression
4 new records| Date | Kind | Detail |
|---|---|---|
| 1940-01-25 | Record low minimum temperature | Record low minimum temperature -16.7 C (1.9 F) |
| 1940-01-26 | Record low minimum temperature | Record low minimum temperature -17.2 C (1.0 F) |
| 1940-01-27 | Record low minimum temperature | Record low minimum temperature -20.6 C (-5.1 F) |
| 1962-01-10 | Record low maximum temperature | Record low maximum temperature -10.0 C (14.0 F) |
Wettest Day of Each Month
Sep: 165.6 mm (6.5 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 101.3 mm (4.0 in) | 1 January 1911 |
| Feb | 144.5 mm (5.7 in) | 2 February 1896 |
| Mar | 159.5 mm (6.3 in) | 27 March 1902 |
| Apr | 160.0 mm (6.3 in) | 16 April 1921 |
| May | 111.8 mm (4.4 in) | 10 May 1925 |
| Jun | 131.8 mm (5.2 in) | 17 June 1934 |
| Jul | 126.5 mm (5.0 in) | 17 July 1933 |
| Aug | 101.3 mm (4.0 in) | 9 August 1942 |
| Sep | 165.6 mm (6.5 in) | 27 September 1906 |
| Oct | 102.6 mm (4.0 in) | 1 October 1905 |
| Nov | 100.8 mm (4.0 in) | 13 November 1957 |
| Dec | 145.5 mm (5.7 in) | 27 December 1942 |
Period of Record Coverage
1896 to 1971| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1896 | 364 | 99% | Yes |
| 1897 | 361 | 99% | Yes |
| 1898 | 353 | 97% | Yes |
| 1899 | 274 | 75% | No |
| 1900 | 336 | 92% | Yes |
| 1901 | 359 | 98% | Yes |
| 1902 | 358 | 98% | Yes |
| 1903 | 357 | 98% | Yes |
| 1904 | 357 | 98% | Yes |
| 1905 | 357 | 98% | Yes |
| 1906 | 352 | 96% | Yes |
| 1907 | 355 | 97% | Yes |
| 1908 | 364 | 99% | Yes |
| 1909 | 331 | 91% | Yes |
| 1910 | 363 | 99% | Yes |
| 1911 | 365 | 100% | Yes |
| 1912 | 364 | 99% | Yes |
| 1913 | 364 | 100% | Yes |
| 1914 | 365 | 100% | Yes |
| 1915 | 365 | 100% | Yes |
| 1916 | 366 | 100% | Yes |
| 1917 | 365 | 100% | Yes |
| 1918 | 364 | 100% | Yes |
| 1919 | 365 | 100% | Yes |
| 1920 | 360 | 98% | Yes |
| 1921 | 323 | 88% | No |
| 1922 | 358 | 98% | Yes |
| 1923 | 363 | 99% | Yes |
| 1924 | 364 | 99% | Yes |
| 1925 | 365 | 100% | Yes |
| 1926 | 362 | 99% | Yes |
| 1927 | 365 | 100% | Yes |
| 1928 | 365 | 100% | Yes |
| 1929 | 363 | 99% | Yes |
| 1930 | 365 | 100% | Yes |
| 1931 | 364 | 100% | Yes |
| 1932 | 364 | 99% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 364 | 100% | Yes |
| 1935 | 363 | 99% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 361 | 99% | Yes |
| 1938 | 364 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 364 | 100% | Yes |
| 1944 | 364 | 99% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 364 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 188 | 52% | No |
| 1964 | 91 | 25% | No |
| 1965 | 361 | 99% | Yes |
| 1966 | 363 | 99% | Yes |
| 1967 | 362 | 99% | Yes |
| 1968 | 363 | 99% | Yes |
| 1969 | 364 | 100% | Yes |
| 1970 | 353 | 97% | Yes |
| 1971 | 123 | 34% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 30 May 1971 | Jackson 4 NW, US | daily low min (Tie) | 12.2 C (54.0 F) | tie | 34 years | 4 of 100 (Routine) |
| 14 May 1971 | Jackson 4 NW, US | daily low min (Tie) | 6.7 C (44.1 F) | tie | 60 years | 6 of 100 (Routine) |
| 13 May 1971 | Jackson 4 NW, US | daily rain | 51.3 mm (2.0 in) | 23.4 mm (0.9 in) | 68 years | 40 of 100 (Notable) |
| 30 April 1971 | Jackson 4 NW, US | daily low max | 17.2 C (63.0 F) | 1.1 C (2.0 F) | 62 years | 27 of 100 (Routine) |
| 7 April 1971 | Jackson 4 NW, US | daily low min (Tie) | 0.6 C (33.1 F) | tie | 72 years | 7 of 100 (Routine) |
| 6 April 1971 | Jackson 4 NW, US | daily low min | 0.6 C (33.1 F) | 0.5 C (0.9 F) | 72 years | 29 of 100 (Routine) |
| 3 April 1971 | Jackson 4 NW, US | daily low min | 0.0 C (32.0 F) | 0.6 C (1.1 F) | 34 years | 18 of 100 (Routine) |
| 8 March 1971 | Jackson 4 NW, US | daily low min | -3.9 C (25.0 F) | 0.6 C (1.1 F) | 69 years | 28 of 100 (Routine) |
| 10 February 1971 | Jackson 4 NW, US | daily low min (Tie) | -7.2 C (19.0 F) | tie | 24 years | 3 of 100 (Routine) |
| 6 January 1971 | Jackson 4 NW, US | daily low max (Tie) | 2.8 C (37.0 F) | tie | 28 years | 3 of 100 (Routine) |
| 22 December 1970 | Jackson 4 NW, US | daily high max | 25.0 C (77.0 F) | 1.1 C (2.0 F) | 48 years | 22 of 100 (Routine) |
| 29 November 1970 | Jackson 4 NW, US | daily high max (Tie) | 27.2 C (81.0 F) | tie | 43 years | 4 of 100 (Routine) |
| 24 November 1970 | Jackson 4 NW, US | monthly low max | 0.6 C (33.1 F) | 1.6 C (2.9 F) | 73 years | 41 of 100 (Notable) |
| 24 November 1970 | Jackson 4 NW, US | daily low min | -7.8 C (18.0 F) | 1.7 C (3.1 F) | 20 years | 15 of 100 (Routine) |
| 19 October 1970 | Jackson 4 NW, US | daily rain | 26.7 mm (1.1 in) | 6.4 mm (0.25 in) | 32 years | 20 of 100 (Routine) |
| 12 October 1970 | Jackson 4 NW, US | daily rain | 43.4 mm (1.7 in) | 23.1 mm (0.9 in) | 72 years | 43 of 100 (Notable) |
| 22 July 1970 | Jackson 4 NW, US | daily low max | 24.4 C (75.9 F) | 2.8 C (5.0 F) | 23 years | 24 of 100 (Routine) |
| 12 July 1970 | Jackson 4 NW, US | daily rain (Tie) | 54.1 mm (2.1 in) | tie | 27 years | 3 of 100 (Routine) |
| 4 July 1970 | Jackson 4 NW, US | daily high min | 25.0 C (77.0 F) | 0.6 C (1.1 F) | 39 years | 21 of 100 (Routine) |
| 24 June 1970 | Jackson 4 NW, US | daily rain | 35.3 mm (1.4 in) | 9.6 mm (0.38 in) | 57 years | 30 of 100 (Routine) |
Climate Trend
66 complete years, 1896 to 1970| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1896 | 18.5 C | -0.07 C |
| 1897 | 18.4 C | -0.19 C |
| 1898 | 17.6 C | -0.95 C |
| 1901 | 17.5 C | -1.07 C |
| 1902 | 18.9 C | +0.32 C |
| 1905 | 17.6 C | -0.99 C |
| 1906 | 18.2 C | -0.40 C |
| 1907 | 18.5 C | -0.04 C |
| 1908 | 19.1 C | +0.47 C |
| 1910 | 18.6 C | +0.04 C |
| 1911 | 20.1 C | +1.49 C |
| 1912 | 18.2 C | -0.34 C |
| 1913 | 18.9 C | +0.31 C |
| 1914 | 18.5 C | -0.08 C |
| 1915 | 18.5 C | -0.06 C |
| 1916 | 18.9 C | +0.34 C |
| 1917 | 18.0 C | -0.58 C |
| 1918 | 19.1 C | +0.54 C |
| 1919 | 19.0 C | +0.38 C |
| 1920 | 18.1 C | -0.47 C |
| 1922 | 19.6 C | +1.06 C |
| 1924 | 18.8 C | +0.20 C |
| 1925 | 19.8 C | +1.19 C |
| 1926 | 19.1 C | +0.56 C |
| 1927 | 20.6 C | +2.04 C |
| 1928 | 19.0 C | +0.38 C |
| 1929 | 19.1 C | +0.53 C |
| 1930 | 18.8 C | +0.26 C |
| 1931 | 18.5 C | -0.04 C |
| 1932 | 18.1 C | -0.52 C |
| 1933 | 19.0 C | +0.40 C |
| 1934 | 18.5 C | -0.04 C |
| 1935 | 18.4 C | -0.15 C |
| 1936 | 18.5 C | -0.12 C |
| 1937 | 18.2 C | -0.39 C |
| 1938 | 19.0 C | +0.45 C |
| 1939 | 19.2 C | +0.58 C |
| 1940 | 17.2 C | -1.36 C |
| 1941 | 18.7 C | +0.10 C |
| 1942 | 18.3 C | -0.31 C |
| 1943 | 18.8 C | +0.17 C |
| 1944 | 19.1 C | +0.47 C |
| 1945 | 18.6 C | +0.02 C |
| 1946 | 19.1 C | +0.54 C |
| 1947 | 18.2 C | -0.35 C |
| 1948 | 18.8 C | +0.21 C |
| 1949 | 19.4 C | +0.77 C |
| 1950 | 18.7 C | +0.12 C |
| 1951 | 19.2 C | +0.58 C |
| 1952 | 18.8 C | +0.18 C |
| 1953 | 19.1 C | +0.55 C |
| 1954 | 19.3 C | +0.69 C |
| 1955 | 18.4 C | -0.21 C |
| 1956 | 18.3 C | -0.24 C |
| 1957 | 18.4 C | -0.17 C |
| 1958 | 17.0 C | -1.55 C |
| 1959 | 18.0 C | -0.63 C |
| 1960 | 17.4 C | -1.18 C |
| 1961 | 17.5 C | -1.05 C |
| 1962 | 18.4 C | -0.17 C |
| 1965 | 19.0 C | +0.44 C |
| 1966 | 18.0 C | -0.55 C |
| 1967 | 18.0 C | -0.58 C |
| 1968 | 17.5 C | -1.12 C |
| 1969 | 18.1 C | -0.44 C |
| 1970 | 18.3 C | -0.28 C |
The fitted trend in annual mean temperature here over 1896 to 1970 is -0.05 C (-0.13 to 0.03) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.10 F (-0.23 to 0.05) per decade. The slope is a straight line fitted to 66 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.05 C (-0.13 to 0.03) per decade | -0.10 F (-0.23 to 0.05) per decade | 1896 to 1970 | 66 | Not clearly different from zero |
| Mean daily maximum | -0.09 C (-0.18 to 0.00) per decade | -0.17 F (-0.33 to 0.00) per decade | 1896 to 1970 | 66 | Fall |
| Mean daily minimum | -0.01 C (-0.09 to 0.07) per decade | -0.03 F (-0.17 to 0.12) per decade | 1896 to 1970 | 66 | Not clearly different from zero |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1896 to 1971| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 41.7 C (107.1 F) | 1925 | 38.1 C (100.5 F) | 76 |
| Coldest night (TNn) | -20.6 C (-5.1 F) | 1940 | -8.9 C (16.0 F) | 76 |
| Wettest day (Rx1day) | 165.6 mm (6.5 in) | 1906 | 85.4 mm (3.4 in) | 76 |
| Wettest five days (Rx5day) | 231.5 mm (9.1 in) | 1897 | 129.3 mm (5.1 in) | 76 |
| Longest dry spell (CDD) | 73 days | 1924 | 22 days | 76 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1896 | 40.0 C (104.0 F) |
| 1897 | 38.9 C (102.0 F) |
| 1898 | 37.2 C (99.0 F) |
| 1899 | 40.6 C (105.1 F) |
| 1900 | 38.3 C (100.9 F) |
| 1901 | 40.0 C (104.0 F) |
| 1902 | 40.6 C (105.1 F) |
| 1903 | 36.7 C (98.1 F) |
| 1904 | 36.7 C (98.1 F) |
| 1905 | 36.1 C (97.0 F) |
| 1906 | 38.3 C (100.9 F) |
| 1907 | 37.2 C (99.0 F) |
| 1908 | 37.2 C (99.0 F) |
| 1909 | 40.6 C (105.1 F) |
| 1910 | 37.2 C (99.0 F) |
| 1911 | 38.9 C (102.0 F) |
| 1912 | 36.7 C (98.1 F) |
| 1913 | 38.3 C (100.9 F) |
| 1914 | 39.4 C (102.9 F) |
| 1915 | 38.9 C (102.0 F) |
| 1916 | 36.7 C (98.1 F) |
| 1917 | 38.3 C (100.9 F) |
| 1918 | 39.4 C (102.9 F) |
| 1919 | 37.8 C (100.0 F) |
| 1920 | 36.7 C (98.1 F) |
| 1921 | 38.9 C (102.0 F) |
| 1922 | 36.7 C (98.1 F) |
| 1923 | 36.1 C (97.0 F) |
| 1924 | 40.6 C (105.1 F) |
| 1925 | 41.7 C (107.1 F) |
| 1926 | 36.7 C (98.1 F) |
| 1927 | 39.4 C (102.9 F) |
| 1928 | 37.8 C (100.0 F) |
| 1929 | 36.1 C (97.0 F) |
| 1930 | 41.7 C (107.1 F) |
| 1931 | 38.9 C (102.0 F) |
| 1932 | 36.7 C (98.1 F) |
| 1933 | 37.8 C (100.0 F) |
| 1934 | 39.4 C (102.9 F) |
| 1935 | 40.6 C (105.1 F) |
| 1936 | 40.6 C (105.1 F) |
| 1937 | 38.3 C (100.9 F) |
| 1938 | 38.3 C (100.9 F) |
| 1939 | 40.0 C (104.0 F) |
| 1940 | 38.3 C (100.9 F) |
| 1941 | 37.8 C (100.0 F) |
| 1942 | 37.8 C (100.0 F) |
| 1943 | 41.1 C (106.0 F) |
| 1944 | 40.0 C (104.0 F) |
| 1945 | 36.1 C (97.0 F) |
| 1946 | 36.1 C (97.0 F) |
| 1947 | 38.9 C (102.0 F) |
| 1948 | 38.9 C (102.0 F) |
| 1949 | 36.7 C (98.1 F) |
| 1950 | 37.2 C (99.0 F) |
| 1951 | 39.4 C (102.9 F) |
| 1952 | 40.0 C (104.0 F) |
| 1953 | 39.4 C (102.9 F) |
| 1954 | 40.6 C (105.1 F) |
| 1955 | 36.1 C (97.0 F) |
| 1956 | 37.2 C (99.0 F) |
| 1957 | 35.6 C (96.1 F) |
| 1958 | 35.0 C (95.0 F) |
| 1959 | 34.4 C (93.9 F) |
| 1960 | 37.8 C (100.0 F) |
| 1961 | 34.4 C (93.9 F) |
| 1962 | 37.2 C (99.0 F) |
| 1963 | 38.3 C (100.9 F) |
| 1964 | 29.4 C (84.9 F) |
| 1965 | 36.7 C (98.1 F) |
| 1966 | 38.3 C (100.9 F) |
| 1967 | 35.0 C (95.0 F) |
| 1968 | 35.0 C (95.0 F) |
| 1969 | 38.3 C (100.9 F) |
| 1970 | 37.8 C (100.0 F) |
| 1971 | 31.1 C (88.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1896 | -8.9 C (16.0 F) |
| 1897 | -10.0 C (14.0 F) |
| 1898 | -7.8 C (18.0 F) |
| 1899 | -5.0 C (23.0 F) |
| 1900 | -9.4 C (15.1 F) |
| 1901 | -11.1 C (12.0 F) |
| 1902 | -7.2 C (19.0 F) |
| 1903 | -9.4 C (15.1 F) |
| 1904 | -16.1 C (3.0 F) |
| 1905 | -12.2 C (10.0 F) |
| 1906 | -5.6 C (21.9 F) |
| 1907 | -6.1 C (21.0 F) |
| 1908 | -6.1 C (21.0 F) |
| 1909 | -9.4 C (15.1 F) |
| 1910 | -8.3 C (17.1 F) |
| 1911 | -11.1 C (12.0 F) |
| 1912 | -10.6 C (12.9 F) |
| 1913 | -4.4 C (24.1 F) |
| 1914 | -8.3 C (17.1 F) |
| 1915 | -5.6 C (21.9 F) |
| 1916 | -7.8 C (18.0 F) |
| 1917 | -12.2 C (10.0 F) |
| 1918 | -15.6 C (3.9 F) |
| 1919 | -15.6 C (3.9 F) |
| 1920 | -6.1 C (21.0 F) |
| 1921 | -2.2 C (28.0 F) |
| 1922 | -2.8 C (27.0 F) |
| 1923 | -6.1 C (21.0 F) |
| 1924 | -12.2 C (10.0 F) |
| 1925 | -10.6 C (12.9 F) |
| 1926 | -6.7 C (19.9 F) |
| 1927 | -8.3 C (17.1 F) |
| 1928 | -10.6 C (12.9 F) |
| 1929 | -13.3 C (8.1 F) |
| 1930 | -12.2 C (10.0 F) |
| 1931 | -6.1 C (21.0 F) |
| 1932 | -8.9 C (16.0 F) |
| 1933 | -11.1 C (12.0 F) |
| 1934 | -8.3 C (17.1 F) |
| 1935 | -10.0 C (14.0 F) |
| 1936 | -8.9 C (16.0 F) |
| 1937 | -10.0 C (14.0 F) |
| 1938 | -8.9 C (16.0 F) |
| 1939 | -3.9 C (25.0 F) |
| 1940 | -20.6 C (-5.1 F) |
| 1941 | -5.0 C (23.0 F) |
| 1942 | -12.2 C (10.0 F) |
| 1943 | -9.4 C (15.1 F) |
| 1944 | -6.7 C (19.9 F) |
| 1945 | -8.9 C (16.0 F) |
| 1946 | -6.7 C (19.9 F) |
| 1947 | -8.3 C (17.1 F) |
| 1948 | -17.2 C (1.0 F) |
| 1949 | -7.8 C (18.0 F) |
| 1950 | -7.8 C (18.0 F) |
| 1951 | -17.2 C (1.0 F) |
| 1952 | -5.0 C (23.0 F) |
| 1953 | -6.7 C (19.9 F) |
| 1954 | -5.6 C (21.9 F) |
| 1955 | -8.9 C (16.0 F) |
| 1956 | -7.2 C (19.0 F) |
| 1957 | -8.9 C (16.0 F) |
| 1958 | -9.4 C (15.1 F) |
| 1959 | -8.9 C (16.0 F) |
| 1960 | -12.2 C (10.0 F) |
| 1961 | -7.2 C (19.0 F) |
| 1962 | -18.3 C (-0.9 F) |
| 1963 | -15.0 C (5.0 F) |
| 1964 | -6.1 C (21.0 F) |
| 1965 | -9.4 C (15.1 F) |
| 1966 | -13.3 C (8.1 F) |
| 1967 | -7.8 C (18.0 F) |
| 1968 | -7.8 C (18.0 F) |
| 1969 | -10.6 C (12.9 F) |
| 1970 | -11.1 C (12.0 F) |
| 1971 | -8.9 C (16.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1896 | 144.5 mm (5.7 in) |
| 1897 | 106.7 mm (4.2 in) |
| 1898 | 57.2 mm (2.3 in) |
| 1899 | 49.5 mm (1.9 in) |
| 1900 | 101.6 mm (4.0 in) |
| 1901 | 101.6 mm (4.0 in) |
| 1902 | 159.5 mm (6.3 in) |
| 1903 | 58.4 mm (2.3 in) |
| 1904 | 48.3 mm (1.9 in) |
| 1905 | 102.6 mm (4.0 in) |
| 1906 | 165.6 mm (6.5 in) |
| 1907 | 50.8 mm (2.0 in) |
| 1908 | 107.7 mm (4.2 in) |
| 1909 | 99.1 mm (3.9 in) |
| 1910 | 106.4 mm (4.2 in) |
| 1911 | 101.3 mm (4.0 in) |
| 1912 | 68.8 mm (2.7 in) |
| 1913 | 74.9 mm (2.9 in) |
| 1914 | 93.7 mm (3.7 in) |
| 1915 | 94.0 mm (3.7 in) |
| 1916 | 67.8 mm (2.7 in) |
| 1917 | 96.0 mm (3.8 in) |
| 1918 | 84.8 mm (3.3 in) |
| 1919 | 70.9 mm (2.8 in) |
| 1920 | 74.7 mm (2.9 in) |
| 1921 | 160.0 mm (6.3 in) |
| 1922 | 78.7 mm (3.1 in) |
| 1923 | 69.1 mm (2.7 in) |
| 1924 | 52.8 mm (2.1 in) |
| 1925 | 111.8 mm (4.4 in) |
| 1926 | 105.4 mm (4.1 in) |
| 1927 | 79.2 mm (3.1 in) |
| 1928 | 115.6 mm (4.6 in) |
| 1929 | 88.4 mm (3.5 in) |
| 1930 | 92.7 mm (3.6 in) |
| 1931 | 78.7 mm (3.1 in) |
| 1932 | 74.9 mm (2.9 in) |
| 1933 | 126.5 mm (5.0 in) |
| 1934 | 131.8 mm (5.2 in) |
| 1935 | 75.4 mm (3.0 in) |
| 1936 | 81.5 mm (3.2 in) |
| 1937 | 55.6 mm (2.2 in) |
| 1938 | 74.2 mm (2.9 in) |
| 1939 | 61.5 mm (2.4 in) |
| 1940 | 83.3 mm (3.3 in) |
| 1941 | 81.5 mm (3.2 in) |
| 1942 | 145.5 mm (5.7 in) |
| 1943 | 71.9 mm (2.8 in) |
| 1944 | 78.0 mm (3.1 in) |
| 1945 | 98.8 mm (3.9 in) |
| 1946 | 101.9 mm (4.0 in) |
| 1947 | 61.0 mm (2.4 in) |
| 1948 | 92.5 mm (3.6 in) |
| 1949 | 86.4 mm (3.4 in) |
| 1950 | 90.7 mm (3.6 in) |
| 1951 | 93.7 mm (3.7 in) |
| 1952 | 53.3 mm (2.1 in) |
| 1953 | 123.2 mm (4.9 in) |
| 1954 | 105.9 mm (4.2 in) |
| 1955 | 93.0 mm (3.7 in) |
| 1956 | 75.4 mm (3.0 in) |
| 1957 | 100.8 mm (4.0 in) |
| 1958 | 80.3 mm (3.2 in) |
| 1959 | 80.0 mm (3.1 in) |
| 1960 | 79.0 mm (3.1 in) |
| 1961 | 91.4 mm (3.6 in) |
| 1962 | 85.9 mm (3.4 in) |
| 1963 | 45.0 mm (1.8 in) |
| 1964 | 100.3 mm (3.9 in) |
| 1965 | 57.7 mm (2.3 in) |
| 1966 | 109.7 mm (4.3 in) |
| 1967 | 75.7 mm (3.0 in) |
| 1968 | 86.6 mm (3.4 in) |
| 1969 | 77.2 mm (3.0 in) |
| 1970 | 58.2 mm (2.3 in) |
| 1971 | 51.3 mm (2.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1896 | 211.5 mm (8.3 in) |
| 1897 | 231.5 mm (9.1 in) |
| 1898 | 107.7 mm (4.2 in) |
| 1899 | 69.8 mm (2.7 in) |
| 1900 | 172.7 mm (6.8 in) |
| 1901 | 129.4 mm (5.1 in) |
| 1902 | 211.1 mm (8.3 in) |
| 1903 | 138.4 mm (5.4 in) |
| 1904 | 80.0 mm (3.1 in) |
| 1905 | 134.6 mm (5.3 in) |
| 1906 | 194.0 mm (7.6 in) |
| 1907 | 90.9 mm (3.6 in) |
| 1908 | 121.9 mm (4.8 in) |
| 1909 | 158.5 mm (6.2 in) |
| 1910 | 111.2 mm (4.4 in) |
| 1911 | 122.5 mm (4.8 in) |
| 1912 | 127.2 mm (5.0 in) |
| 1913 | 160.8 mm (6.3 in) |
| 1914 | 173.0 mm (6.8 in) |
| 1915 | 129.1 mm (5.1 in) |
| 1916 | 86.4 mm (3.4 in) |
| 1917 | 115.8 mm (4.6 in) |
| 1918 | 112.3 mm (4.4 in) |
| 1919 | 99.0 mm (3.9 in) |
| 1920 | 119.4 mm (4.7 in) |
| 1921 | 228.1 mm (9.0 in) |
| 1922 | 116.1 mm (4.6 in) |
| 1923 | 165.9 mm (6.5 in) |
| 1924 | 64.7 mm (2.5 in) |
| 1925 | 128.3 mm (5.1 in) |
| 1926 | 174.7 mm (6.9 in) |
| 1927 | 106.1 mm (4.2 in) |
| 1928 | 139.7 mm (5.5 in) |
| 1929 | 140.8 mm (5.5 in) |
| 1930 | 145.3 mm (5.7 in) |
| 1931 | 115.1 mm (4.5 in) |
| 1932 | 164.8 mm (6.5 in) |
| 1933 | 131.1 mm (5.2 in) |
| 1934 | 136.2 mm (5.4 in) |
| 1935 | 133.1 mm (5.2 in) |
| 1936 | 142.0 mm (5.6 in) |
| 1937 | 80.0 mm (3.1 in) |
| 1938 | 123.4 mm (4.9 in) |
| 1939 | 114.8 mm (4.5 in) |
| 1940 | 157.8 mm (6.2 in) |
| 1941 | 89.9 mm (3.5 in) |
| 1942 | 212.1 mm (8.4 in) |
| 1943 | 88.2 mm (3.5 in) |
| 1944 | 125.3 mm (4.9 in) |
| 1945 | 164.9 mm (6.5 in) |
| 1946 | 145.9 mm (5.7 in) |
| 1947 | 133.7 mm (5.3 in) |
| 1948 | 175.6 mm (6.9 in) |
| 1949 | 165.4 mm (6.5 in) |
| 1950 | 139.7 mm (5.5 in) |
| 1951 | 117.9 mm (4.6 in) |
| 1952 | 69.3 mm (2.7 in) |
| 1953 | 143.3 mm (5.6 in) |
| 1954 | 169.6 mm (6.7 in) |
| 1955 | 148.9 mm (5.9 in) |
| 1956 | 127.8 mm (5.0 in) |
| 1957 | 110.8 mm (4.4 in) |
| 1958 | 158.9 mm (6.3 in) |
| 1959 | 177.8 mm (7.0 in) |
| 1960 | 145.1 mm (5.7 in) |
| 1961 | 128.6 mm (5.1 in) |
| 1962 | 107.2 mm (4.2 in) |
| 1963 | 53.1 mm (2.1 in) |
| 1964 | 150.6 mm (5.9 in) |
| 1965 | 92.9 mm (3.7 in) |
| 1966 | 168.2 mm (6.6 in) |
| 1967 | 124.9 mm (4.9 in) |
| 1968 | 86.6 mm (3.4 in) |
| 1969 | 110.1 mm (4.3 in) |
| 1970 | 107.2 mm (4.2 in) |
| 1971 | 94.0 mm (3.7 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1896 | 22 days |
| 1897 | 27 days |
| 1898 | 17 days |
| 1899 | 37 days |
| 1900 | 26 days |
| 1901 | 22 days |
| 1902 | 23 days |
| 1903 | 39 days |
| 1904 | 39 days |
| 1905 | 21 days |
| 1906 | 34 days |
| 1907 | 17 days |
| 1908 | 24 days |
| 1909 | 22 days |
| 1910 | 15 days |
| 1911 | 19 days |
| 1912 | 13 days |
| 1913 | 21 days |
| 1914 | 24 days |
| 1915 | 29 days |
| 1916 | 25 days |
| 1917 | 23 days |
| 1918 | 26 days |
| 1919 | 14 days |
| 1920 | 24 days |
| 1921 | 25 days |
| 1922 | 19 days |
| 1923 | 26 days |
| 1924 | 73 days |
| 1925 | 25 days |
| 1926 | 14 days |
| 1927 | 21 days |
| 1928 | 22 days |
| 1929 | 17 days |
| 1930 | 32 days |
| 1931 | 23 days |
| 1932 | 15 days |
| 1933 | 20 days |
| 1934 | 21 days |
| 1935 | 19 days |
| 1936 | 26 days |
| 1937 | 21 days |
| 1938 | 21 days |
| 1939 | 19 days |
| 1940 | 34 days |
| 1941 | 16 days |
| 1942 | 19 days |
| 1943 | 22 days |
| 1944 | 28 days |
| 1945 | 14 days |
| 1946 | 22 days |
| 1947 | 20 days |
| 1948 | 20 days |
| 1949 | 33 days |
| 1950 | 16 days |
| 1951 | 29 days |
| 1952 | 51 days |
| 1953 | 30 days |
| 1954 | 17 days |
| 1955 | 21 days |
| 1956 | 29 days |
| 1957 | 15 days |
| 1958 | 26 days |
| 1959 | 19 days |
| 1960 | 18 days |
| 1961 | 25 days |
| 1962 | 19 days |
| 1963 | 18 days |
| 1964 | 12 days |
| 1965 | 28 days |
| 1966 | 20 days |
| 1967 | 25 days |
| 1968 | 24 days |
| 1969 | 21 days |
| 1970 | 34 days |
| 1971 | 15 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.
Frost Dates and Growing Season
66 years with a frostAcross 66 years with a frost, the median last spring frost at Jackson 4 NW falls on 16 March and the median first autumn frost on 9 November, which leaves a median of 237 days between them.
In 1939 to 1970 the median growing season was 235 days. That is 5 days fewer than in 1896 to 1932.
Fitted over all years, the growing season changes by -0.2 days per decade at this station.
| Measure | Median, all years | Earliest period (1896 to 1932) | Recent period (1939 to 1970) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 16 March | 15 March | 16 March | 1 day later | +0.6 days per decade |
| First autumn frost | 9 November | 12 November | 9 November | 3 days earlier | +0.3 days per decade |
| Growing days | 237 days | 240 days | 235 days | 5 days fewer | -0.2 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
72 years, 1896 to 1970A day with at least 85.7 mm (3.4 in) of rain is expected about once in 2 years. A day with at least 170.2 mm (6.7 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 85.7 mm (3.4 in) | |
| 5 years | 108.8 mm (4.3 in) | |
| 10 years | 123.9 mm (4.9 in) | |
| 25 years | 142.8 mm (5.6 in) | |
| 50 years | 156.6 mm (6.2 in) | |
| 100 years | 170.2 mm (6.7 in) | Longer than the 72 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, 72 years of values from 1896 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: 165.6 mm (6.5 in) in 1906; 160.0 mm (6.3 in) in 1921; 159.5 mm (6.3 in) in 1902.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Jackson 4 NW, at 1931 and 1965. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1931 ran 0.3 C (0.6 F) lower than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1965 ran 0.5 C (0.9 F) higher than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1931 | -0.3 | -0.6 | likely | 5 |
| 1965 | +0.5 | +0.9 | possible | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).