Mt Vernon 3 SW Weather Records (USC00235861)
Record envelope, standing records and threshold days for Mt Vernon 3 SW (USC00235861), Missouri, United States, with 76 years of record.
Key Facts for Mt Vernon 3 SW
- Mt Vernon 3 SW (USC00235861) is a weather station in Missouri, United States at 37.07 latitude and -93.87 longitude, 354 m (1,161 ft) above sea level.
- The station reports from 1893 to 1968, 76 years of record.
- 1,464 records set at Mt Vernon 3 SW still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Mt Vernon 3 SW set a daily record precipitation of 34.3 mm (1.4 in) on 11 August 1968.
About the Station
- Location: Missouri, United States, 37.07 latitude, -93.87 longitude.
- Elevation: 354 m (1,161 ft).
- Period of record: 1893 to 1968, 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 | 25.0 C (77.0 F) | -30.0 C (-22.0 F) | n/a | n/a |
| Feb | 30.0 C (86.0 F) | -32.2 C (-26.0 F) | n/a | n/a |
| Mar | 32.8 C (91.0 F) | -22.2 C (-8.0 F) | n/a | n/a |
| Apr | 33.3 C (91.9 F) | -10.6 C (12.9 F) | n/a | n/a |
| May | 35.6 C (96.1 F) | -3.3 C (26.1 F) | n/a | n/a |
| Jun | 40.0 C (104.0 F) | 4.4 C (39.9 F) | n/a | n/a |
| Jul | 45.6 C (114.1 F) | 3.9 C (39.0 F) | n/a | n/a |
| Aug | 41.1 C (106.0 F) | 4.4 C (39.9 F) | n/a | n/a |
| Sep | 41.1 C (106.0 F) | -2.8 C (27.0 F) | n/a | n/a |
| Oct | 36.7 C (98.1 F) | -8.3 C (17.1 F) | n/a | n/a |
| Nov | 29.4 C (84.9 F) | -15.6 C (3.9 F) | n/a | n/a |
| Dec | 25.6 C (78.1 F) | -25.6 C (-14.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1893 | 4 |
| 1894 | 44 |
| 1895 | 50 |
| 1896 | 44 |
| 1897 | 48 |
| 1898 | 28 |
| 1899 | 47 |
| 1900 | 18 |
| 1901 | 57 |
| 1902 | 35 |
| 1903 | 26 |
| 1904 | 18 |
| 1905 | 24 |
| 1906 | 10 |
| 1907 | 44 |
| 1908 | 25 |
| 1909 | 28 |
| 1910 | 16 |
| 1911 | 54 |
| 1912 | 28 |
| 1913 | 30 |
| 1914 | 28 |
| 1915 | 9 |
| 1916 | 3 |
| 1917 | 23 |
| 1918 | 7 |
| 1937 | 11 |
| 1938 | 24 |
| 1939 | 28 |
| 1940 | 32 |
| 1941 | 18 |
| 1942 | 17 |
| 1943 | 30 |
| 1944 | 12 |
| 1945 | 16 |
| 1946 | 18 |
| 1947 | 17 |
| 1948 | 9 |
| 1949 | 20 |
| 1950 | 38 |
| 1951 | 21 |
| 1952 | 30 |
| 1953 | 34 |
| 1954 | 37 |
| 1955 | 21 |
| 1956 | 26 |
| 1957 | 12 |
| 1958 | 16 |
| 1959 | 13 |
| 1960 | 27 |
| 1961 | 20 |
| 1962 | 29 |
| 1963 | 27 |
| 1964 | 18 |
| 1965 | 22 |
| 1966 | 28 |
| 1967 | 32 |
| 1968 | 13 |
All-Time Record Progression
4 new records| Date | Kind | Detail |
|---|---|---|
| 1950-08-26 | Record daily precipitation | Record daily precipitation 190.0 mm (7.5 in) |
| 1954-07-13 | Record high maximum temperature | Record high maximum temperature 44.4 C (111.9 F) |
| 1954-07-14 | Record high maximum temperature | Record high maximum temperature 45.6 C (114.1 F) |
| 1954-07-18 | Record high minimum temperature | Record high minimum temperature 27.8 C (82.0 F) |
Wettest Day of Each Month
Aug: 190.0 mm (7.5 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 102.6 mm (4.0 in) | 20 January 1904 |
| Feb | 69.9 mm (2.8 in) | 18 February 1908 |
| Mar | 139.7 mm (5.5 in) | 11 March 1902 |
| Apr | 119.4 mm (4.7 in) | 19 April 1941 |
| May | 184.2 mm (7.3 in) | 18 May 1943 |
| Jun | 107.7 mm (4.2 in) | 14 June 1899 |
| Jul | 103.6 mm (4.1 in) | 29 July 1946 |
| Aug | 190.0 mm (7.5 in) | 26 August 1950 |
| Sep | 134.1 mm (5.3 in) | 22 September 1893 |
| Oct | 108.0 mm (4.3 in) | 21 October 1949 |
| Nov | 139.7 mm (5.5 in) | 12 November 1909 |
| Dec | 132.1 mm (5.2 in) | 18 December 1895 |
Period of Record Coverage
1893 to 1968| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1893 | 60 | 16% | No |
| 1894 | 358 | 98% | Yes |
| 1895 | 354 | 97% | Yes |
| 1896 | 361 | 99% | Yes |
| 1897 | 333 | 91% | Yes |
| 1898 | 361 | 99% | Yes |
| 1899 | 353 | 97% | Yes |
| 1900 | 355 | 97% | Yes |
| 1901 | 356 | 98% | Yes |
| 1902 | 361 | 99% | Yes |
| 1903 | 364 | 100% | Yes |
| 1904 | 338 | 92% | Yes |
| 1905 | 354 | 97% | Yes |
| 1906 | 207 | 57% | No |
| 1907 | 336 | 92% | Yes |
| 1908 | 362 | 99% | Yes |
| 1909 | 354 | 97% | Yes |
| 1910 | 211 | 58% | No |
| 1911 | 349 | 96% | Yes |
| 1912 | 349 | 95% | Yes |
| 1913 | 332 | 91% | Yes |
| 1914 | 344 | 94% | Yes |
| 1915 | 301 | 82% | No |
| 1916 | 53 | 14% | No |
| 1917 | 224 | 61% | No |
| 1918 | 29 | 8% | No |
| 1937 | 92 | 25% | No |
| 1938 | 360 | 99% | Yes |
| 1939 | 363 | 99% | Yes |
| 1940 | 365 | 100% | Yes |
| 1941 | 353 | 97% | Yes |
| 1942 | 342 | 94% | Yes |
| 1943 | 304 | 83% | No |
| 1944 | 292 | 80% | No |
| 1945 | 227 | 62% | No |
| 1946 | 350 | 96% | Yes |
| 1947 | 363 | 99% | Yes |
| 1948 | 120 | 33% | No |
| 1949 | 365 | 100% | Yes |
| 1950 | 362 | 99% | Yes |
| 1951 | 342 | 94% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 364 | 100% | Yes |
| 1954 | 362 | 99% | 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 | 354 | 97% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 364 | 100% | Yes |
| 1964 | 365 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 244 | 67% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 11 August 1968 | Mt Vernon 3 SW, US | daily rain | 34.3 mm (1.4 in) | 12.2 mm (0.5 in) | 74 years | 35 of 100 (Notable) |
| 3 July 1968 | Mt Vernon 3 SW, US | daily low min | 9.4 C (48.9 F) | 0.6 C (1.1 F) | 9 years | 10 of 100 (Routine) |
| 26 June 1968 | Mt Vernon 3 SW, US | daily low max | 21.1 C (70.0 F) | 1.1 C (2.0 F) | 64 years | 28 of 100 (Routine) |
| 25 June 1968 | Mt Vernon 3 SW, US | daily rain | 64.0 mm (2.5 in) | 16.2 mm (0.6 in) | 70 years | 37 of 100 (Notable) |
| 25 June 1968 | Mt Vernon 3 SW, US | daily low max | 21.7 C (71.1 F) | 0.5 C (0.9 F) | 65 years | 27 of 100 (Routine) |
| 11 May 1968 | Mt Vernon 3 SW, US | daily low max (Tie) | 13.9 C (57.0 F) | tie | 56 years | 5 of 100 (Routine) |
| 25 April 1968 | Mt Vernon 3 SW, US | daily low min | 0.6 C (33.1 F) | 2.7 C (4.9 F) | 61 years | 29 of 100 (Routine) |
| 24 April 1968 | Mt Vernon 3 SW, US | daily low min | -1.1 C (30.0 F) | 0.5 C (0.9 F) | 12 years | 10 of 100 (Routine) |
| 5 April 1968 | Mt Vernon 3 SW, US | daily low min | -4.4 C (24.1 F) | 0.5 C (0.9 F) | 24 years | 14 of 100 (Routine) |
| 23 March 1968 | Mt Vernon 3 SW, US | daily low min | -7.2 C (19.0 F) | 0.5 C (0.9 F) | 16 years | 11 of 100 (Routine) |
| 19 March 1968 | Mt Vernon 3 SW, US | daily rain | 47.2 mm (1.9 in) | 6.6 mm (0.26 in) | 72 years | 32 of 100 (Routine) |
| 13 March 1968 | Mt Vernon 3 SW, US | daily low min | -15.6 C (3.9 F) | 4.5 C (8.1 F) | 71 years | 35 of 100 (Notable) |
| 12 March 1968 | Mt Vernon 3 SW, US | daily snowfall | 15.2 cm (6.0 in) | 3.8 cm (1.5 in) | 10 years | 16 of 100 (Routine) |
| 11 March 1968 | Mt Vernon 3 SW, US | daily snowfall | 12.7 cm (5.0 in) | 11.4 cm (4.5 in) | 8 years | 29 of 100 (Routine) |
| 22 February 1968 | Mt Vernon 3 SW, US | daily low max | -3.3 C (26.1 F) | 3.9 C (7.0 F) | 57 years | 29 of 100 (Routine) |
| 21 February 1968 | Mt Vernon 3 SW, US | daily snowfall | 5.1 cm (2.0 in) | 2.6 cm (1.0 in) | 1 year | 11 of 100 (Routine) |
| 31 January 1968 | Mt Vernon 3 SW, US | daily high min | 9.4 C (48.9 F) | 3.8 C (6.8 F) | 56 years | 29 of 100 (Routine) |
| 29 January 1968 | Mt Vernon 3 SW, US | daily high min | 8.3 C (46.9 F) | 1.1 C (2.0 F) | 50 years | 23 of 100 (Routine) |
| 28 January 1968 | Mt Vernon 3 SW, US | daily rain | 18.3 mm (0.7 in) | 3.1 mm (0.12 in) | 72 years | 20 of 100 (Routine) |
| 28 January 1968 | Mt Vernon 3 SW, US | daily high min (Tie) | 11.1 C (52.0 F) | tie | 53 years | 5 of 100 (Routine) |
Climate Trend
40 complete years, 1894 to 1967| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1894 | 13.4 C | -0.58 C |
| 1895 | 11.2 C | -2.80 C |
| 1896 | 12.8 C | -1.20 C |
| 1898 | 14.5 C | +0.52 C |
| 1899 | 14.4 C | +0.47 C |
| 1900 | 14.7 C | +0.76 C |
| 1901 | 14.8 C | +0.85 C |
| 1902 | 14.1 C | +0.10 C |
| 1903 | 12.9 C | -1.03 C |
| 1907 | 14.0 C | +0.06 C |
| 1908 | 14.9 C | +0.96 C |
| 1909 | 14.1 C | +0.18 C |
| 1911 | 14.6 C | +0.65 C |
| 1913 | 14.0 C | +0.04 C |
| 1914 | 13.9 C | -0.09 C |
| 1938 | 15.8 C | +1.88 C |
| 1939 | 15.1 C | +1.09 C |
| 1940 | 13.2 C | -0.79 C |
| 1941 | 14.9 C | +0.97 C |
| 1946 | 15.5 C | +1.55 C |
| 1947 | 14.4 C | +0.40 C |
| 1949 | 13.8 C | -0.15 C |
| 1950 | 13.0 C | -1.00 C |
| 1951 | 13.0 C | -0.98 C |
| 1952 | 14.2 C | +0.25 C |
| 1953 | 14.9 C | +0.97 C |
| 1954 | 15.5 C | +1.54 C |
| 1955 | 14.0 C | +0.04 C |
| 1956 | 14.5 C | +0.52 C |
| 1957 | 13.8 C | -0.12 C |
| 1958 | 12.8 C | -1.15 C |
| 1959 | 13.7 C | -0.31 C |
| 1960 | 13.2 C | -0.77 C |
| 1961 | 13.0 C | -0.97 C |
| 1962 | 13.4 C | -0.61 C |
| 1963 | 14.0 C | +0.02 C |
| 1964 | 14.2 C | +0.22 C |
| 1965 | 14.2 C | +0.27 C |
| 1966 | 13.0 C | -1.01 C |
| 1967 | 13.2 C | -0.75 C |
The fitted trend in annual mean temperature here over 1894 to 1967 is 0.0 C (-0.1 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.0 F (-0.2 to 0.2) per decade. The slope is a straight line fitted to 40 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.0 C (-0.1 to 0.1) per decade | 0.0 F (-0.2 to 0.2) per decade | 1894 to 1967 | 40 | Not clearly different from zero |
| Mean daily maximum | -0.03 C (-0.17 to 0.10) per decade | -0.1 F (-0.3 to 0.2) per decade | 1894 to 1967 | 40 | Not clearly different from zero |
| Mean daily minimum | 0.03 C (-0.08 to 0.14) per decade | 0.1 F (-0.1 to 0.3) per decade | 1894 to 1967 | 40 | 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
1893 to 1968| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 45.6 C (114.1 F) | 1954 | 38.3 C (100.9 F) | 58 |
| Coldest night (TNn) | -32.2 C (-26.0 F) | 1905 | -19.7 C (-3.5 F) | 58 |
| Wettest day (Rx1day) | 190.0 mm (7.5 in) | 1950 | 77.2 mm (3.0 in) | 58 |
| Wettest five days (Rx5day) | 318.0 mm (12.5 in) | 1943 | 108.2 mm (4.3 in) | 58 |
| Longest dry spell (CDD) | 58 days | 1901 | 24 days | 58 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | 31.1 C (88.0 F) |
| 1894 | 38.9 C (102.0 F) |
| 1895 | 35.0 C (95.0 F) |
| 1896 | 41.1 C (106.0 F) |
| 1897 | 40.6 C (105.1 F) |
| 1898 | 37.2 C (99.0 F) |
| 1899 | 40.6 C (105.1 F) |
| 1900 | 39.4 C (102.9 F) |
| 1901 | 43.9 C (111.0 F) |
| 1902 | 37.8 C (100.0 F) |
| 1903 | 38.3 C (100.9 F) |
| 1904 | 34.4 C (93.9 F) |
| 1905 | 36.7 C (98.1 F) |
| 1906 | 33.9 C (93.0 F) |
| 1907 | 40.6 C (105.1 F) |
| 1908 | 37.8 C (100.0 F) |
| 1909 | 41.1 C (106.0 F) |
| 1910 | 37.2 C (99.0 F) |
| 1911 | 38.3 C (100.9 F) |
| 1912 | 38.3 C (100.9 F) |
| 1913 | 40.0 C (104.0 F) |
| 1914 | 39.4 C (102.9 F) |
| 1915 | 36.7 C (98.1 F) |
| 1916 | 22.8 C (73.0 F) |
| 1917 | 34.4 C (93.9 F) |
| 1918 | 12.2 C (54.0 F) |
| 1937 | 32.2 C (90.0 F) |
| 1938 | 40.6 C (105.1 F) |
| 1939 | 41.1 C (106.0 F) |
| 1940 | 37.8 C (100.0 F) |
| 1941 | 37.8 C (100.0 F) |
| 1942 | 38.3 C (100.9 F) |
| 1943 | 39.4 C (102.9 F) |
| 1944 | 37.8 C (100.0 F) |
| 1945 | 38.3 C (100.9 F) |
| 1946 | 39.4 C (102.9 F) |
| 1947 | 41.1 C (106.0 F) |
| 1948 | 25.6 C (78.1 F) |
| 1949 | 35.0 C (95.0 F) |
| 1950 | 35.6 C (96.1 F) |
| 1951 | 38.9 C (102.0 F) |
| 1952 | 40.0 C (104.0 F) |
| 1953 | 39.4 C (102.9 F) |
| 1954 | 45.6 C (114.1 F) |
| 1955 | 36.7 C (98.1 F) |
| 1956 | 39.4 C (102.9 F) |
| 1957 | 38.3 C (100.9 F) |
| 1958 | 36.1 C (97.0 F) |
| 1959 | 35.6 C (96.1 F) |
| 1960 | 37.8 C (100.0 F) |
| 1961 | 35.6 C (96.1 F) |
| 1962 | 38.9 C (102.0 F) |
| 1963 | 40.0 C (104.0 F) |
| 1964 | 41.1 C (106.0 F) |
| 1965 | 37.2 C (99.0 F) |
| 1966 | 39.4 C (102.9 F) |
| 1967 | 35.6 C (96.1 F) |
| 1968 | 36.1 C (97.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | -10.0 C (14.0 F) |
| 1894 | -30.0 C (-22.0 F) |
| 1895 | -29.4 C (-20.9 F) |
| 1896 | -17.2 C (1.0 F) |
| 1897 | -21.1 C (-6.0 F) |
| 1898 | -23.3 C (-9.9 F) |
| 1899 | -31.7 C (-25.1 F) |
| 1900 | -21.1 C (-6.0 F) |
| 1901 | -21.7 C (-7.1 F) |
| 1902 | -18.9 C (-2.0 F) |
| 1903 | -21.1 C (-6.0 F) |
| 1904 | -22.8 C (-9.0 F) |
| 1905 | -32.2 C (-26.0 F) |
| 1906 | -20.6 C (-5.1 F) |
| 1907 | -16.7 C (1.9 F) |
| 1908 | -14.4 C (6.1 F) |
| 1909 | -20.0 C (-4.0 F) |
| 1910 | -26.1 C (-15.0 F) |
| 1911 | -21.1 C (-6.0 F) |
| 1912 | -26.7 C (-16.1 F) |
| 1913 | -19.4 C (-2.9 F) |
| 1914 | -18.9 C (-2.0 F) |
| 1915 | -15.0 C (5.0 F) |
| 1916 | -21.7 C (-7.1 F) |
| 1917 | -25.6 C (-14.1 F) |
| 1918 | -27.8 C (-18.0 F) |
| 1937 | -16.1 C (3.0 F) |
| 1938 | -15.0 C (5.0 F) |
| 1939 | -16.1 C (3.0 F) |
| 1940 | -23.9 C (-11.0 F) |
| 1941 | -14.4 C (6.1 F) |
| 1942 | -20.0 C (-4.0 F) |
| 1943 | -25.6 C (-14.1 F) |
| 1944 | -16.7 C (1.9 F) |
| 1945 | -21.7 C (-7.1 F) |
| 1946 | -15.0 C (5.0 F) |
| 1947 | -17.8 C (0.0 F) |
| 1948 | -18.3 C (-0.9 F) |
| 1949 | -18.9 C (-2.0 F) |
| 1950 | -18.3 C (-0.9 F) |
| 1951 | -21.7 C (-7.1 F) |
| 1952 | -12.2 C (10.0 F) |
| 1953 | -14.4 C (6.1 F) |
| 1954 | -13.9 C (7.0 F) |
| 1955 | -16.1 C (3.0 F) |
| 1956 | -15.0 C (5.0 F) |
| 1957 | -15.6 C (3.9 F) |
| 1958 | -22.2 C (-8.0 F) |
| 1959 | -22.2 C (-8.0 F) |
| 1960 | -17.8 C (0.0 F) |
| 1961 | -17.2 C (1.0 F) |
| 1962 | -22.8 C (-9.0 F) |
| 1963 | -24.4 C (-11.9 F) |
| 1964 | -18.9 C (-2.0 F) |
| 1965 | -18.3 C (-0.9 F) |
| 1966 | -25.0 C (-13.0 F) |
| 1967 | -15.0 C (5.0 F) |
| 1968 | -21.7 C (-7.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 134.1 mm (5.3 in) |
| 1894 | 88.9 mm (3.5 in) |
| 1895 | 132.1 mm (5.2 in) |
| 1896 | 55.9 mm (2.2 in) |
| 1897 | 102.4 mm (4.0 in) |
| 1898 | 77.2 mm (3.0 in) |
| 1899 | 107.7 mm (4.2 in) |
| 1900 | 74.2 mm (2.9 in) |
| 1901 | 77.2 mm (3.0 in) |
| 1902 | 139.7 mm (5.5 in) |
| 1903 | 50.8 mm (2.0 in) |
| 1904 | 102.6 mm (4.0 in) |
| 1905 | 86.4 mm (3.4 in) |
| 1906 | 76.2 mm (3.0 in) |
| 1907 | 92.2 mm (3.6 in) |
| 1908 | 69.9 mm (2.8 in) |
| 1909 | 139.7 mm (5.5 in) |
| 1910 | 53.3 mm (2.1 in) |
| 1911 | 101.6 mm (4.0 in) |
| 1912 | 101.6 mm (4.0 in) |
| 1913 | 79.2 mm (3.1 in) |
| 1914 | 62.2 mm (2.4 in) |
| 1915 | 67.3 mm (2.6 in) |
| 1916 | 58.4 mm (2.3 in) |
| 1917 | 104.9 mm (4.1 in) |
| 1918 | 6.4 mm (0.25 in) |
| 1937 | 22.9 mm (0.9 in) |
| 1938 | 78.7 mm (3.1 in) |
| 1939 | 92.7 mm (3.6 in) |
| 1940 | 81.3 mm (3.2 in) |
| 1941 | 119.4 mm (4.7 in) |
| 1942 | 81.3 mm (3.2 in) |
| 1943 | 184.2 mm (7.3 in) |
| 1944 | 71.1 mm (2.8 in) |
| 1945 | 87.9 mm (3.5 in) |
| 1946 | 119.4 mm (4.7 in) |
| 1947 | 73.4 mm (2.9 in) |
| 1948 | 68.1 mm (2.7 in) |
| 1949 | 108.0 mm (4.3 in) |
| 1950 | 190.0 mm (7.5 in) |
| 1951 | 54.4 mm (2.1 in) |
| 1952 | 65.3 mm (2.6 in) |
| 1953 | 56.1 mm (2.2 in) |
| 1954 | 53.8 mm (2.1 in) |
| 1955 | 64.3 mm (2.5 in) |
| 1956 | 71.4 mm (2.8 in) |
| 1957 | 95.8 mm (3.8 in) |
| 1958 | 62.7 mm (2.5 in) |
| 1959 | 95.5 mm (3.8 in) |
| 1960 | 48.0 mm (1.9 in) |
| 1961 | 82.0 mm (3.2 in) |
| 1962 | 63.5 mm (2.5 in) |
| 1963 | 47.0 mm (1.9 in) |
| 1964 | 57.2 mm (2.3 in) |
| 1965 | 51.8 mm (2.0 in) |
| 1966 | 63.0 mm (2.5 in) |
| 1967 | 104.4 mm (4.1 in) |
| 1968 | 64.0 mm (2.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 150.4 mm (5.9 in) |
| 1894 | 94.3 mm (3.7 in) |
| 1895 | 249.0 mm (9.8 in) |
| 1896 | 106.7 mm (4.2 in) |
| 1897 | 123.2 mm (4.9 in) |
| 1898 | 216.7 mm (8.5 in) |
| 1899 | 147.3 mm (5.8 in) |
| 1900 | 99.9 mm (3.9 in) |
| 1901 | 82.3 mm (3.2 in) |
| 1902 | 147.3 mm (5.8 in) |
| 1903 | 82.6 mm (3.3 in) |
| 1904 | 126.3 mm (5.0 in) |
| 1905 | 127.3 mm (5.0 in) |
| 1906 | 108.5 mm (4.3 in) |
| 1907 | 96.9 mm (3.8 in) |
| 1908 | 125.1 mm (4.9 in) |
| 1909 | 185.2 mm (7.3 in) |
| 1910 | 89.4 mm (3.5 in) |
| 1911 | 226.4 mm (8.9 in) |
| 1912 | 125.2 mm (4.9 in) |
| 1913 | 146.0 mm (5.7 in) |
| 1914 | 89.9 mm (3.5 in) |
| 1915 | 140.2 mm (5.5 in) |
| 1916 | 143.8 mm (5.7 in) |
| 1917 | 104.9 mm (4.1 in) |
| 1918 | 12.2 mm (0.5 in) |
| 1937 | 28.7 mm (1.1 in) |
| 1938 | 125.7 mm (4.9 in) |
| 1939 | 129.5 mm (5.1 in) |
| 1940 | 102.9 mm (4.1 in) |
| 1941 | 196.8 mm (7.7 in) |
| 1942 | 96.5 mm (3.8 in) |
| 1943 | 318.0 mm (12.5 in) |
| 1944 | 82.1 mm (3.2 in) |
| 1945 | 201.0 mm (7.9 in) |
| 1946 | 170.9 mm (6.7 in) |
| 1947 | 128.0 mm (5.0 in) |
| 1948 | 94.8 mm (3.7 in) |
| 1949 | 113.9 mm (4.5 in) |
| 1950 | 287.6 mm (11.3 in) |
| 1951 | 74.9 mm (2.9 in) |
| 1952 | 88.7 mm (3.5 in) |
| 1953 | 57.2 mm (2.3 in) |
| 1954 | 100.0 mm (3.9 in) |
| 1955 | 81.8 mm (3.2 in) |
| 1956 | 89.7 mm (3.5 in) |
| 1957 | 173.0 mm (6.8 in) |
| 1958 | 92.9 mm (3.7 in) |
| 1959 | 180.8 mm (7.1 in) |
| 1960 | 71.0 mm (2.8 in) |
| 1961 | 166.8 mm (6.6 in) |
| 1962 | 103.5 mm (4.1 in) |
| 1963 | 70.6 mm (2.8 in) |
| 1964 | 91.4 mm (3.6 in) |
| 1965 | 126.2 mm (5.0 in) |
| 1966 | 73.7 mm (2.9 in) |
| 1967 | 107.9 mm (4.2 in) |
| 1968 | 92.5 mm (3.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 26 days |
| 1894 | 25 days |
| 1895 | 33 days |
| 1896 | 30 days |
| 1897 | 32 days |
| 1898 | 23 days |
| 1899 | 28 days |
| 1900 | 27 days |
| 1901 | 58 days |
| 1902 | 19 days |
| 1903 | 22 days |
| 1904 | 23 days |
| 1905 | 26 days |
| 1906 | 16 days |
| 1907 | 15 days |
| 1908 | 24 days |
| 1909 | 23 days |
| 1910 | 23 days |
| 1911 | 27 days |
| 1912 | 29 days |
| 1913 | 26 days |
| 1914 | 24 days |
| 1915 | 17 days |
| 1916 | 26 days |
| 1917 | 30 days |
| 1918 | 12 days |
| 1937 | 13 days |
| 1938 | 23 days |
| 1939 | 22 days |
| 1940 | 25 days |
| 1941 | 21 days |
| 1942 | 24 days |
| 1943 | 40 days |
| 1944 | 24 days |
| 1945 | 25 days |
| 1946 | 19 days |
| 1947 | 26 days |
| 1948 | 18 days |
| 1949 | 19 days |
| 1950 | 22 days |
| 1951 | 11 days |
| 1952 | 27 days |
| 1953 | 22 days |
| 1954 | 22 days |
| 1955 | 26 days |
| 1956 | 20 days |
| 1957 | 17 days |
| 1958 | 20 days |
| 1959 | 25 days |
| 1960 | 31 days |
| 1961 | 32 days |
| 1962 | 19 days |
| 1963 | 38 days |
| 1964 | 18 days |
| 1965 | 22 days |
| 1966 | 31 days |
| 1967 | 19 days |
| 1968 | 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
40 years with a frostAcross 40 years with a frost, the median last spring frost at Mt Vernon 3 SW falls on 17 April and the median first autumn frost on 16 October, which leaves a median of 181 days between them.
Fitted over all years, the growing season changes by +1.5 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1908 to 1967) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 17 April | n/a | 18 April | n/a | -0.1 days per decade |
| First autumn frost | 16 October | n/a | 20 October | n/a | +1.4 days per decade |
| Growing days | 181 days | n/a | 186 days | n/a | +1.5 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
44 years, 1894 to 1967A day with at least 77.0 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 181.9 mm (7.2 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 77.0 mm (3.0 in) | |
| 5 years | 101.5 mm (4.0 in) | |
| 10 years | 119.1 mm (4.7 in) | |
| 25 years | 142.9 mm (5.6 in) | |
| 50 years | 161.9 mm (6.4 in) | Longer than the 44 years of record |
| 100 years | 181.9 mm (7.2 in) | Longer than the 44 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, 44 years of values from 1894 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: 190.0 mm (7.5 in) in 1950; 139.7 mm (5.5 in) in 1902; 132.1 mm (5.2 in) in 1895.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
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).