Seymour 1 NNW Weather Records (USC00237674)
Record envelope, standing records and threshold days for Seymour 1 NNW (USC00237674), Missouri, United States, with 65 years of record.
Key Facts for Seymour 1 NNW
- Seymour 1 NNW (USC00237674) is a weather station in Missouri, United States at 37.15 latitude and -92.77 longitude, n/a above sea level.
- The station reports from 1896 to 1960, 65 years of record.
- 1,464 records set at Seymour 1 NNW still stand.
- Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
- Seymour 1 NNW set a daily record precipitation of 41.9 mm (1.6 in) on 23 July 1960.
About the Station
- Location: Missouri, United States, 37.15 latitude, -92.77 longitude.
- Elevation: n/a.
- Period of record: 1896 to 1960, 65 years.
- Eligible elements: tmax, tmin, prcp, snow.
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 | 23.9 C (75.0 F) | -29.4 C (-20.9 F) | n/a | n/a |
| Feb | 26.1 C (79.0 F) | -32.2 C (-26.0 F) | n/a | n/a |
| Mar | 32.2 C (90.0 F) | -25.6 C (-14.1 F) | n/a | n/a |
| Apr | 31.7 C (89.1 F) | -10.0 C (14.0 F) | n/a | n/a |
| May | 35.0 C (95.0 F) | -2.2 C (28.0 F) | n/a | n/a |
| Jun | 39.4 C (102.9 F) | 3.9 C (39.0 F) | n/a | n/a |
| Jul | 44.4 C (111.9 F) | 4.4 C (39.9 F) | n/a | n/a |
| Aug | 41.1 C (106.0 F) | 6.1 C (43.0 F) | n/a | n/a |
| Sep | 40.0 C (104.0 F) | -1.1 C (30.0 F) | n/a | n/a |
| Oct | 35.6 C (96.1 F) | -11.1 C (12.0 F) | n/a | n/a |
| Nov | 31.1 C (88.0 F) | -17.2 C (1.0 F) | n/a | n/a |
| Dec | 25.0 C (77.0 F) | -26.7 C (-16.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1896 | 71 |
| 1897 | 30 |
| 1898 | 19 |
| 1899 | 45 |
| 1900 | 22 |
| 1901 | 41 |
| 1902 | 30 |
| 1903 | 28 |
| 1904 | 21 |
| 1905 | 30 |
| 1906 | 21 |
| 1907 | 25 |
| 1920 | 8 |
| 1921 | 59 |
| 1922 | 39 |
| 1923 | 31 |
| 1924 | 37 |
| 1925 | 49 |
| 1926 | 24 |
| 1927 | 32 |
| 1928 | 28 |
| 1929 | 31 |
| 1930 | 41 |
| 1931 | 28 |
| 1932 | 23 |
| 1933 | 29 |
| 1934 | 48 |
| 1935 | 16 |
| 1936 | 46 |
| 1937 | 24 |
| 1938 | 25 |
| 1939 | 32 |
| 1940 | 39 |
| 1941 | 9 |
| 1942 | 22 |
| 1943 | 21 |
| 1944 | 20 |
| 1945 | 28 |
| 1946 | 26 |
| 1947 | 25 |
| 1948 | 12 |
| 1949 | 12 |
| 1950 | 41 |
| 1951 | 30 |
| 1952 | 37 |
| 1953 | 28 |
| 1954 | 32 |
| 1955 | 20 |
| 1956 | 10 |
| 1957 | 1 |
| 1958 | 3 |
| 1959 | 11 |
| 1960 | 4 |
All-Time Record Progression
2 new records| Date | Kind | Detail |
|---|---|---|
| 1954-07-12 | Record high maximum temperature | Record high maximum temperature 42.8 C (109.0 F) |
| 1954-07-14 | Record high maximum temperature | Record high maximum temperature 44.4 C (111.9 F) |
Wettest Day of Each Month
Jan: 176.5 mm (6.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 176.5 mm (6.9 in) | 2 January 1897 |
| Feb | 66.0 mm (2.6 in) | 23 February 1907 |
| Mar | 98.6 mm (3.9 in) | 25 March 1904 |
| Apr | 100.3 mm (3.9 in) | 19 April 1941 |
| May | 94.5 mm (3.7 in) | 13 May 1933 |
| Jun | 111.8 mm (4.4 in) | 28 June 1902 |
| Jul | 141.7 mm (5.6 in) | 20 July 1905 |
| Aug | 146.6 mm (5.8 in) | 20 August 1920 |
| Sep | 134.4 mm (5.3 in) | 21 September 1925 |
| Oct | 98.3 mm (3.9 in) | 30 October 1942 |
| Nov | 102.1 mm (4.0 in) | 4 November 1938 |
| Dec | 68.1 mm (2.7 in) | 18 December 1924 |
Period of Record Coverage
1896 to 1960| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1896 | 314 | 86% | No |
| 1897 | 347 | 95% | Yes |
| 1898 | 363 | 99% | Yes |
| 1899 | 365 | 100% | Yes |
| 1900 | 356 | 98% | Yes |
| 1901 | 365 | 100% | Yes |
| 1902 | 363 | 99% | Yes |
| 1903 | 364 | 100% | Yes |
| 1904 | 363 | 99% | Yes |
| 1905 | 364 | 100% | Yes |
| 1906 | 348 | 95% | Yes |
| 1907 | 149 | 41% | No |
| 1920 | 137 | 37% | No |
| 1921 | 360 | 99% | Yes |
| 1922 | 362 | 99% | Yes |
| 1923 | 365 | 100% | Yes |
| 1924 | 342 | 93% | Yes |
| 1925 | 361 | 99% | Yes |
| 1926 | 362 | 99% | Yes |
| 1927 | 358 | 98% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 359 | 98% | Yes |
| 1930 | 354 | 97% | Yes |
| 1931 | 364 | 100% | Yes |
| 1932 | 319 | 87% | No |
| 1933 | 365 | 100% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 364 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 339 | 93% | Yes |
| 1938 | 360 | 99% | Yes |
| 1939 | 364 | 100% | Yes |
| 1940 | 365 | 100% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 364 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 364 | 100% | Yes |
| 1946 | 361 | 99% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 188 | 51% | No |
| 1949 | 184 | 50% | No |
| 1950 | 364 | 100% | Yes |
| 1951 | 363 | 99% | Yes |
| 1952 | 357 | 98% | Yes |
| 1953 | 330 | 90% | Yes |
| 1954 | 333 | 91% | Yes |
| 1955 | 230 | 63% | No |
| 1956 | 145 | 40% | No |
| 1957 | 78 | 21% | No |
| 1958 | 137 | 38% | No |
| 1959 | 232 | 64% | No |
| 1960 | 94 | 26% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 23 July 1960 | Seymour 1 NNW, US | daily rain | 41.9 mm (1.6 in) | 11.7 mm (0.5 in) | 58 years | 30 of 100 (Routine) |
| 31 January 1960 | Seymour 1 NNW, US | daily high max | 15.6 C (60.1 F) | 0.6 C (1.1 F) | 34 years | 16 of 100 (Routine) |
| 12 January 1960 | Seymour 1 NNW, US | daily high min | 11.1 C (52.0 F) | 4.4 C (7.9 F) | 28 years | 20 of 100 (Routine) |
| 12 January 1960 | Seymour 1 NNW, US | daily high max | 20.6 C (69.1 F) | 1.2 C (2.2 F) | 24 years | 14 of 100 (Routine) |
| 11 January 1960 | Seymour 1 NNW, US | daily high min | 10.0 C (50.0 F) | 1.1 C (2.0 F) | 61 years | 25 of 100 (Routine) |
| 10 January 1960 | Seymour 1 NNW, US | daily high min (Tie) | 6.7 C (44.1 F) | tie | 57 years | 5 of 100 (Routine) |
| 17 December 1959 | Seymour 1 NNW, US | daily high min | 5.0 C (41.0 F) | 1.1 C (2.0 F) | 58 years | 24 of 100 (Routine) |
| 17 November 1959 | Seymour 1 NNW, US | daily low min | -16.1 C (3.0 F) | 6.1 C (11.0 F) | 38 years | 27 of 100 (Routine) |
| 17 November 1959 | Seymour 1 NNW, US | monthly low max (Tie) | -5.6 C (21.9 F) | tie | 62 years | 8 of 100 (Routine) |
| 6 November 1959 | Seymour 1 NNW, US | daily low min | -10.0 C (14.0 F) | 3.3 C (5.9 F) | 20 years | 17 of 100 (Routine) |
| 6 November 1959 | Seymour 1 NNW, US | daily low max (Tie) | -2.2 C (28.0 F) | tie | 8 years | 2 of 100 (Routine) |
| 28 October 1959 | Seymour 1 NNW, US | daily low max | 7.8 C (46.0 F) | 0.5 C (0.9 F) | 17 years | 11 of 100 (Routine) |
| 27 October 1959 | Seymour 1 NNW, US | daily low max | 7.8 C (46.0 F) | 0.5 C (0.9 F) | 22 years | 12 of 100 (Routine) |
| 13 October 1959 | Seymour 1 NNW, US | daily rain | 63.5 mm (2.5 in) | 38.1 mm (1.5 in) | 16 years | 33 of 100 (Routine) |
| 28 June 1959 | Seymour 1 NNW, US | daily high min | 22.2 C (72.0 F) | 0.5 C (0.9 F) | 25 years | 14 of 100 (Routine) |
| 23 June 1959 | Seymour 1 NNW, US | daily rain | 30.5 mm (1.2 in) | 3.6 mm (0.14 in) | 12 years | 11 of 100 (Routine) |
| 12 June 1959 | Seymour 1 NNW, US | daily rain | 32.5 mm (1.3 in) | 20.1 mm (0.8 in) | 20 years | 24 of 100 (Routine) |
| 14 May 1959 | Seymour 1 NNW, US | daily low min (Tie) | 2.2 C (36.0 F) | tie | 34 years | 4 of 100 (Routine) |
| 4 May 1959 | Seymour 1 NNW, US | daily high min | 20.0 C (68.0 F) | 2.8 C (5.0 F) | 53 years | 27 of 100 (Routine) |
| 3 May 1959 | Seymour 1 NNW, US | daily high max (Tie) | 30.0 C (86.0 F) | tie | 56 years | 5 of 100 (Routine) |
Climate Trend
35 complete years, 1897 to 1951| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1897 | 13.2 C | +0.29 C |
| 1899 | 12.0 C | -0.92 C |
| 1900 | 13.2 C | +0.27 C |
| 1901 | 13.5 C | +0.57 C |
| 1902 | 12.3 C | -0.62 C |
| 1903 | 12.0 C | -0.94 C |
| 1904 | 12.2 C | -0.78 C |
| 1905 | 12.0 C | -1.00 C |
| 1906 | 12.1 C | -0.84 C |
| 1921 | 15.2 C | +2.24 C |
| 1922 | 14.1 C | +1.15 C |
| 1923 | 13.1 C | +0.16 C |
| 1925 | 13.4 C | +0.42 C |
| 1926 | 12.6 C | -0.36 C |
| 1927 | 13.3 C | +0.30 C |
| 1928 | 12.7 C | -0.24 C |
| 1929 | 12.4 C | -0.51 C |
| 1930 | 12.9 C | -0.03 C |
| 1931 | 14.3 C | +1.30 C |
| 1933 | 14.0 C | +1.01 C |
| 1934 | 13.7 C | +0.76 C |
| 1935 | 12.6 C | -0.39 C |
| 1936 | 13.5 C | +0.50 C |
| 1938 | 14.4 C | +1.45 C |
| 1939 | 13.9 C | +0.91 C |
| 1940 | 12.0 C | -0.98 C |
| 1941 | 13.5 C | +0.57 C |
| 1942 | 12.9 C | -0.07 C |
| 1943 | 13.0 C | +0.03 C |
| 1944 | 13.2 C | +0.20 C |
| 1945 | 11.7 C | -1.27 C |
| 1946 | 13.4 C | +0.44 C |
| 1947 | 12.0 C | -0.98 C |
| 1950 | 11.8 C | -1.13 C |
| 1951 | 11.5 C | -1.50 C |
The fitted trend in annual mean temperature here over 1897 to 1951 is 0.02 C (-0.17 to 0.20) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.03 F (-0.30 to 0.36) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.02 C (-0.17 to 0.20) per decade | 0.03 F (-0.30 to 0.36) per decade | 1897 to 1951 | 35 | Not clearly different from zero |
| Mean daily maximum | 0.1 C (-0.1 to 0.3) per decade | 0.1 F (-0.2 to 0.5) per decade | 1897 to 1951 | 35 | Not clearly different from zero |
| Mean daily minimum | -0.05 C (-0.25 to 0.15) per decade | -0.1 F (-0.4 to 0.3) per decade | 1897 to 1951 | 35 | 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 1960| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 44.4 C (111.9 F) | 1954 | 36.1 C (97.0 F) | 53 |
| Coldest night (TNn) | -32.2 C (-26.0 F) | 1899 | -18.9 C (-2.0 F) | 53 |
| Wettest day (Rx1day) | 176.5 mm (6.9 in) | 1897 | 68.8 mm (2.7 in) | 53 |
| Wettest five days (Rx5day) | 189.7 mm (7.5 in) | 1945 | 108.2 mm (4.3 in) | 53 |
| Longest dry spell (CDD) | 38 days | 1897 | 21 days | 53 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1896 | 37.8 C (100.0 F) |
| 1897 | 38.9 C (102.0 F) |
| 1898 | 32.8 C (91.0 F) |
| 1899 | 37.8 C (100.0 F) |
| 1900 | 37.8 C (100.0 F) |
| 1901 | 41.7 C (107.1 F) |
| 1902 | 35.0 C (95.0 F) |
| 1903 | 33.3 C (91.9 F) |
| 1904 | 34.4 C (93.9 F) |
| 1905 | 33.3 C (91.9 F) |
| 1906 | 31.7 C (89.1 F) |
| 1907 | 31.1 C (88.0 F) |
| 1920 | 31.7 C (89.1 F) |
| 1921 | 36.1 C (97.0 F) |
| 1922 | 38.9 C (102.0 F) |
| 1923 | 35.6 C (96.1 F) |
| 1924 | 33.3 C (91.9 F) |
| 1925 | 37.2 C (99.0 F) |
| 1926 | 37.8 C (100.0 F) |
| 1927 | 33.3 C (91.9 F) |
| 1928 | 33.3 C (91.9 F) |
| 1929 | 36.7 C (98.1 F) |
| 1930 | 40.6 C (105.1 F) |
| 1931 | 36.7 C (98.1 F) |
| 1932 | 34.4 C (93.9 F) |
| 1933 | 37.2 C (99.0 F) |
| 1934 | 42.2 C (108.0 F) |
| 1935 | 37.2 C (99.0 F) |
| 1936 | 40.6 C (105.1 F) |
| 1937 | 36.1 C (97.0 F) |
| 1938 | 38.3 C (100.9 F) |
| 1939 | 37.8 C (100.0 F) |
| 1940 | 35.0 C (95.0 F) |
| 1941 | 36.1 C (97.0 F) |
| 1942 | 35.0 C (95.0 F) |
| 1943 | 37.2 C (99.0 F) |
| 1944 | 36.1 C (97.0 F) |
| 1945 | 35.6 C (96.1 F) |
| 1946 | 39.4 C (102.9 F) |
| 1947 | 38.3 C (100.9 F) |
| 1948 | 32.2 C (90.0 F) |
| 1949 | 31.7 C (89.1 F) |
| 1950 | 32.8 C (91.0 F) |
| 1951 | 36.7 C (98.1 F) |
| 1952 | 39.4 C (102.9 F) |
| 1953 | 39.4 C (102.9 F) |
| 1954 | 44.4 C (111.9 F) |
| 1955 | 38.9 C (102.0 F) |
| 1956 | 30.6 C (87.1 F) |
| 1957 | 31.7 C (89.1 F) |
| 1958 | 33.3 C (91.9 F) |
| 1959 | 33.3 C (91.9 F) |
| 1960 | 36.7 C (98.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1896 | -16.1 C (3.0 F) |
| 1897 | -20.6 C (-5.1 F) |
| 1898 | -18.3 C (-0.9 F) |
| 1899 | -32.2 C (-26.0 F) |
| 1900 | -23.3 C (-9.9 F) |
| 1901 | -25.0 C (-13.0 F) |
| 1902 | -23.9 C (-11.0 F) |
| 1903 | -22.2 C (-8.0 F) |
| 1904 | -23.3 C (-9.9 F) |
| 1905 | -30.6 C (-23.1 F) |
| 1906 | -20.6 C (-5.1 F) |
| 1907 | -17.2 C (1.0 F) |
| 1920 | -13.9 C (7.0 F) |
| 1921 | -12.2 C (10.0 F) |
| 1922 | -16.1 C (3.0 F) |
| 1923 | -17.8 C (0.0 F) |
| 1924 | -26.7 C (-16.1 F) |
| 1925 | -18.9 C (-2.0 F) |
| 1926 | -26.1 C (-15.0 F) |
| 1927 | -19.4 C (-2.9 F) |
| 1928 | -23.3 C (-9.9 F) |
| 1929 | -30.6 C (-23.1 F) |
| 1930 | -29.4 C (-20.9 F) |
| 1931 | -15.6 C (3.9 F) |
| 1932 | -15.6 C (3.9 F) |
| 1933 | -23.9 C (-11.0 F) |
| 1934 | -22.8 C (-9.0 F) |
| 1935 | -18.9 C (-2.0 F) |
| 1936 | -22.8 C (-9.0 F) |
| 1937 | -17.2 C (1.0 F) |
| 1938 | -16.7 C (1.9 F) |
| 1939 | -16.7 C (1.9 F) |
| 1940 | -25.0 C (-13.0 F) |
| 1941 | -12.8 C (9.0 F) |
| 1942 | -22.8 C (-9.0 F) |
| 1943 | -25.6 C (-14.1 F) |
| 1944 | -20.0 C (-4.0 F) |
| 1945 | -19.4 C (-2.9 F) |
| 1946 | -15.6 C (3.9 F) |
| 1947 | -18.9 C (-2.0 F) |
| 1948 | -21.7 C (-7.1 F) |
| 1949 | -16.7 C (1.9 F) |
| 1950 | -17.2 C (1.0 F) |
| 1951 | -25.6 C (-14.1 F) |
| 1952 | -14.4 C (6.1 F) |
| 1953 | -16.1 C (3.0 F) |
| 1954 | -16.7 C (1.9 F) |
| 1955 | -18.9 C (-2.0 F) |
| 1956 | -16.7 C (1.9 F) |
| 1957 | -8.9 C (16.0 F) |
| 1958 | -18.3 C (-0.9 F) |
| 1959 | -16.1 C (3.0 F) |
| 1960 | -15.0 C (5.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1896 | 49.5 mm (1.9 in) |
| 1897 | 176.5 mm (6.9 in) |
| 1898 | 56.6 mm (2.2 in) |
| 1899 | 44.7 mm (1.8 in) |
| 1900 | 97.5 mm (3.8 in) |
| 1901 | 52.1 mm (2.1 in) |
| 1902 | 111.8 mm (4.4 in) |
| 1903 | 95.3 mm (3.8 in) |
| 1904 | 98.6 mm (3.9 in) |
| 1905 | 141.7 mm (5.6 in) |
| 1906 | 84.3 mm (3.3 in) |
| 1907 | 66.0 mm (2.6 in) |
| 1920 | 146.6 mm (5.8 in) |
| 1921 | 50.8 mm (2.0 in) |
| 1922 | 30.5 mm (1.2 in) |
| 1923 | 78.2 mm (3.1 in) |
| 1924 | 68.1 mm (2.7 in) |
| 1925 | 134.4 mm (5.3 in) |
| 1926 | 68.8 mm (2.7 in) |
| 1927 | 60.5 mm (2.4 in) |
| 1928 | 96.0 mm (3.8 in) |
| 1929 | 62.7 mm (2.5 in) |
| 1930 | 45.2 mm (1.8 in) |
| 1931 | 106.7 mm (4.2 in) |
| 1932 | 96.3 mm (3.8 in) |
| 1933 | 94.5 mm (3.7 in) |
| 1934 | 66.0 mm (2.6 in) |
| 1935 | 74.4 mm (2.9 in) |
| 1936 | 49.5 mm (1.9 in) |
| 1937 | 63.5 mm (2.5 in) |
| 1938 | 102.1 mm (4.0 in) |
| 1939 | 74.9 mm (2.9 in) |
| 1940 | 61.0 mm (2.4 in) |
| 1941 | 100.3 mm (3.9 in) |
| 1942 | 98.3 mm (3.9 in) |
| 1943 | 72.4 mm (2.9 in) |
| 1944 | 62.2 mm (2.4 in) |
| 1945 | 63.2 mm (2.5 in) |
| 1946 | 63.0 mm (2.5 in) |
| 1947 | 59.7 mm (2.4 in) |
| 1948 | 77.5 mm (3.1 in) |
| 1949 | 70.4 mm (2.8 in) |
| 1950 | 80.8 mm (3.2 in) |
| 1951 | 52.8 mm (2.1 in) |
| 1952 | 64.8 mm (2.6 in) |
| 1953 | 88.6 mm (3.5 in) |
| 1954 | 61.5 mm (2.4 in) |
| 1955 | 56.4 mm (2.2 in) |
| 1956 | 49.3 mm (1.9 in) |
| 1957 | 72.1 mm (2.8 in) |
| 1958 | 67.3 mm (2.6 in) |
| 1959 | 73.7 mm (2.9 in) |
| 1960 | 49.5 mm (1.9 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1896 | 146.0 mm (5.7 in) |
| 1897 | 83.3 mm (3.3 in) |
| 1898 | 113.3 mm (4.5 in) |
| 1899 | 83.5 mm (3.3 in) |
| 1900 | 161.2 mm (6.3 in) |
| 1901 | 58.5 mm (2.3 in) |
| 1902 | 126.8 mm (5.0 in) |
| 1903 | 142.1 mm (5.6 in) |
| 1904 | 118.2 mm (4.7 in) |
| 1905 | 142.8 mm (5.6 in) |
| 1906 | 122.9 mm (4.8 in) |
| 1907 | 103.0 mm (4.1 in) |
| 1920 | 150.2 mm (5.9 in) |
| 1921 | 102.0 mm (4.0 in) |
| 1922 | 61.8 mm (2.4 in) |
| 1923 | 108.2 mm (4.3 in) |
| 1924 | 103.6 mm (4.1 in) |
| 1925 | 187.2 mm (7.4 in) |
| 1926 | 98.0 mm (3.9 in) |
| 1927 | 119.0 mm (4.7 in) |
| 1928 | 158.2 mm (6.2 in) |
| 1929 | 78.2 mm (3.1 in) |
| 1930 | 100.7 mm (4.0 in) |
| 1931 | 153.2 mm (6.0 in) |
| 1932 | 112.0 mm (4.4 in) |
| 1933 | 184.1 mm (7.2 in) |
| 1934 | 80.7 mm (3.2 in) |
| 1935 | 137.4 mm (5.4 in) |
| 1936 | 54.7 mm (2.2 in) |
| 1937 | 82.8 mm (3.3 in) |
| 1938 | 165.1 mm (6.5 in) |
| 1939 | 87.1 mm (3.4 in) |
| 1940 | 116.4 mm (4.6 in) |
| 1941 | 184.9 mm (7.3 in) |
| 1942 | 127.2 mm (5.0 in) |
| 1943 | 173.0 mm (6.8 in) |
| 1944 | 68.0 mm (2.7 in) |
| 1945 | 189.7 mm (7.5 in) |
| 1946 | 152.1 mm (6.0 in) |
| 1947 | 96.5 mm (3.8 in) |
| 1948 | 100.4 mm (4.0 in) |
| 1949 | 113.3 mm (4.5 in) |
| 1950 | 142.3 mm (5.6 in) |
| 1951 | 88.3 mm (3.5 in) |
| 1952 | 82.6 mm (3.3 in) |
| 1953 | 97.7 mm (3.8 in) |
| 1954 | 74.5 mm (2.9 in) |
| 1955 | 72.7 mm (2.9 in) |
| 1956 | 49.3 mm (1.9 in) |
| 1957 | 139.7 mm (5.5 in) |
| 1958 | 107.4 mm (4.2 in) |
| 1959 | 74.1 mm (2.9 in) |
| 1960 | 94.7 mm (3.7 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1896 | 21 days |
| 1897 | 38 days |
| 1898 | 19 days |
| 1899 | 22 days |
| 1900 | 24 days |
| 1901 | 20 days |
| 1902 | 19 days |
| 1903 | 19 days |
| 1904 | 21 days |
| 1905 | 17 days |
| 1906 | 31 days |
| 1907 | 35 days |
| 1920 | 21 days |
| 1921 | 20 days |
| 1922 | 19 days |
| 1923 | 17 days |
| 1924 | 25 days |
| 1925 | 24 days |
| 1926 | 20 days |
| 1927 | 21 days |
| 1928 | 38 days |
| 1929 | 24 days |
| 1930 | 23 days |
| 1931 | 16 days |
| 1932 | 30 days |
| 1933 | 29 days |
| 1934 | 32 days |
| 1935 | 22 days |
| 1936 | 29 days |
| 1937 | 15 days |
| 1938 | 23 days |
| 1939 | 21 days |
| 1940 | 23 days |
| 1941 | 24 days |
| 1942 | 22 days |
| 1943 | 28 days |
| 1944 | 17 days |
| 1945 | 21 days |
| 1946 | 18 days |
| 1947 | 20 days |
| 1948 | 19 days |
| 1949 | 20 days |
| 1950 | 30 days |
| 1951 | 16 days |
| 1952 | 33 days |
| 1953 | 27 days |
| 1954 | 27 days |
| 1955 | 23 days |
| 1956 | 21 days |
| 1957 | 8 days |
| 1958 | 16 days |
| 1959 | 36 days |
| 1960 | 19 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
35 years with a frostAcross 35 years with a frost, the median last spring frost at Seymour 1 NNW falls on 22 April and the median first autumn frost on 16 October, which leaves a median of 172 days between them.
Fitted over all years, the growing season changes by -0.9 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1903 to 1951) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 22 April | n/a | 26 April | n/a | +1.1 days per decade |
| First autumn frost | 16 October | n/a | 17 October | n/a | +0.2 days per decade |
| Growing days | 172 days | n/a | 171 days | n/a | -0.9 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
39 years, 1897 to 1954A day with at least 73.9 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 179.8 mm (7.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 73.9 mm (2.9 in) | |
| 5 years | 98.8 mm (3.9 in) | |
| 10 years | 116.6 mm (4.6 in) | |
| 25 years | 140.7 mm (5.5 in) | |
| 50 years | 159.8 mm (6.3 in) | Longer than the 39 years of record |
| 100 years | 179.8 mm (7.1 in) | Longer than the 39 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, 39 years of values from 1897 to 1954.
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: 176.5 mm (6.9 in) in 1897; 141.7 mm (5.6 in) in 1905; 134.4 mm (5.3 in) in 1925.
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).