Mt Vernon UNIV Mo - SW Ctr Weather Records (USC00235862)
Record envelope, standing records and threshold days for Mt Vernon UNIV Mo - SW Ctr (USC00235862), Missouri, United States, with 54 years of record.
Key Facts for Mt Vernon UNIV Mo - SW Ctr
- Mt Vernon UNIV Mo - SW Ctr (USC00235862) is a weather station in Missouri, United States at 37.07 latitude and -93.88 longitude, 363 m (1,190 ft) above sea level.
- The station reports from 1960 to 2013, 54 years of record.
- 1,464 records set at Mt Vernon UNIV Mo - SW Ctr still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Mt Vernon UNIV Mo - SW Ctr set a daily record low minimum temperature of 11.7 C (53.1 F) on 2 July 2013.
About the Station
- Location: Missouri, United States, 37.07 latitude, -93.88 longitude.
- Elevation: 363 m (1,190 ft).
- Period of record: 1960 to 2013, 54 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 | 23.3 C (73.9 F) | -26.7 C (-16.1 F) | n/a | n/a |
| Feb | 28.3 C (82.9 F) | -27.8 C (-18.0 F) | n/a | n/a |
| Mar | 29.4 C (84.9 F) | -18.9 C (-2.0 F) | n/a | n/a |
| Apr | 33.3 C (91.9 F) | -8.9 C (16.0 F) | n/a | n/a |
| May | 35.0 C (95.0 F) | -1.7 C (28.9 F) | n/a | n/a |
| Jun | 38.9 C (102.0 F) | 3.3 C (37.9 F) | n/a | n/a |
| Jul | 42.2 C (108.0 F) | 6.1 C (43.0 F) | n/a | n/a |
| Aug | 43.3 C (109.9 F) | 6.7 C (44.1 F) | n/a | n/a |
| Sep | 41.1 C (106.0 F) | -2.2 C (28.0 F) | n/a | n/a |
| Oct | 33.9 C (93.0 F) | -8.9 C (16.0 F) | n/a | n/a |
| Nov | 30.6 C (87.1 F) | -15.6 C (3.9 F) | n/a | n/a |
| Dec | 23.9 C (75.0 F) | -27.2 C (-17.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1960 | 14 |
| 1961 | 21 |
| 1962 | 32 |
| 1963 | 55 |
| 1964 | 28 |
| 1965 | 22 |
| 1966 | 28 |
| 1967 | 43 |
| 1968 | 33 |
| 1969 | 14 |
| 1970 | 30 |
| 1971 | 24 |
| 1972 | 23 |
| 1973 | 13 |
| 1974 | 34 |
| 1975 | 25 |
| 1976 | 43 |
| 1977 | 26 |
| 1978 | 31 |
| 1979 | 44 |
| 1980 | 52 |
| 1981 | 24 |
| 1982 | 20 |
| 1983 | 32 |
| 1984 | 24 |
| 1985 | 29 |
| 1986 | 26 |
| 1987 | 22 |
| 1988 | 21 |
| 1989 | 52 |
| 1990 | 19 |
| 1991 | 21 |
| 1992 | 23 |
| 1993 | 23 |
| 1994 | 12 |
| 1995 | 18 |
| 1996 | 34 |
| 1997 | 26 |
| 1998 | 27 |
| 1999 | 27 |
| 2000 | 33 |
| 2001 | 19 |
| 2002 | 26 |
| 2003 | 24 |
| 2004 | 21 |
| 2005 | 20 |
| 2006 | 30 |
| 2007 | 19 |
| 2008 | 13 |
| 2009 | 20 |
| 2010 | 15 |
| 2011 | 40 |
| 2012 | 53 |
| 2013 | 16 |
All-Time Record Progression
5 new records| Date | Kind | Detail |
|---|---|---|
| 1993-09-25 | Record daily precipitation | Record daily precipitation 208.3 mm (8.2 in) |
| 1995-01-19 | Record snow depth | Record snow depth 35.6 cm (14.0 in) |
| 1999-03-14 | Record daily snowfall | Record daily snowfall 45.7 cm (18.0 in) |
| 1999-03-15 | Record snow depth | Record snow depth 38.1 cm (15.0 in) |
| 2011-08-03 | Record high maximum temperature | Record high maximum temperature 43.3 C (109.9 F) |
Wettest Day of Each Month
Sep: 208.3 mm (8.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 88.6 mm (3.5 in) | 5 January 2005 |
| Feb | 63.0 mm (2.5 in) | 23 February 1985 |
| Mar | 88.1 mm (3.5 in) | 30 March 1985 |
| Apr | 97.8 mm (3.9 in) | 25 April 2011 |
| May | 122.4 mm (4.8 in) | 20 May 1979 |
| Jun | 104.1 mm (4.1 in) | 14 June 2008 |
| Jul | 113.5 mm (4.5 in) | 4 July 1983 |
| Aug | 97.3 mm (3.8 in) | 23 August 1988 |
| Sep | 208.3 mm (8.2 in) | 25 September 1993 |
| Oct | 166.4 mm (6.6 in) | 9 October 2009 |
| Nov | 121.4 mm (4.8 in) | 25 November 1987 |
| Dec | 70.1 mm (2.8 in) | 4 December 1973 |
Period of Record Coverage
1960 to 2013| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1960 | 192 | 52% | No |
| 1961 | 365 | 100% | Yes |
| 1962 | 363 | 99% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 335 | 92% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 358 | 98% | Yes |
| 1970 | 360 | 99% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 365 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 364 | 100% | Yes |
| 1975 | 362 | 99% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 360 | 99% | Yes |
| 1983 | 334 | 92% | Yes |
| 1984 | 363 | 99% | Yes |
| 1985 | 364 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 334 | 92% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 334 | 92% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 352 | 96% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 364 | 100% | Yes |
| 1996 | 363 | 99% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 364 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 363 | 99% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 365 | 100% | Yes |
| 2005 | 364 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 364 | 100% | Yes |
| 2008 | 361 | 99% | Yes |
| 2009 | 363 | 99% | Yes |
| 2010 | 362 | 99% | Yes |
| 2011 | 362 | 99% | Yes |
| 2012 | 354 | 97% | Yes |
| 2013 | 181 | 50% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 2 July 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily low min | 11.7 C (53.1 F) | 0.5 C (0.9 F) | 28 years | 14 of 100 (Routine) |
| 1 July 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily low min (Tie) | 10.6 C (51.1 F) | tie | 28 years | 3 of 100 (Routine) |
| 27 June 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily high max | 37.2 C (99.0 F) | 0.5 C (0.9 F) | 24 years | 13 of 100 (Routine) |
| 12 June 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily high min | 23.9 C (75.0 F) | 1.1 C (2.0 F) | 3 years | 8 of 100 (Routine) |
| 2 June 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily low min (Tie) | 7.8 C (46.0 F) | tie | 44 years | 4 of 100 (Routine) |
| 31 May 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily rain | 91.7 mm (3.6 in) | 37.6 mm (1.5 in) | 0 years | 31 of 100 (Routine) |
| 30 May 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily high max (Tie) | 32.2 C (90.0 F) | tie | 0 years | 1 of 100 (Routine) |
| 27 May 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily high min | 21.7 C (71.1 F) | 1.1 C (2.0 F) | 26 years | 14 of 100 (Routine) |
| 19 May 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily high max | 31.7 C (89.1 F) | 0.6 C (1.1 F) | 26 years | 13 of 100 (Routine) |
| 18 May 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily high max (Tie) | 31.7 C (89.1 F) | tie | 12 years | 2 of 100 (Routine) |
| 14 May 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily high max | 31.7 C (89.1 F) | 1.1 C (2.0 F) | 50 years | 22 of 100 (Routine) |
| 12 May 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily low min (Tie) | 2.2 C (36.0 F) | tie | 52 years | 5 of 100 (Routine) |
| 3 May 2013 | Mt Vernon UNIV Mo - SW Ctr, US | monthly snowfall | 5.1 cm (2.0 in) | 5.1 cm (2.0 in) | 52 years | 40 of 100 (Notable) |
| 3 May 2013 | Mt Vernon UNIV Mo - SW Ctr, US | monthly low max | 7.8 C (46.0 F) | 1.1 C (2.0 F) | 34 years | 27 of 100 (Routine) |
| 1 May 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily high min | 17.2 C (63.0 F) | 1.1 C (2.0 F) | 36 years | 17 of 100 (Routine) |
| 1 May 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily high max | 31.7 C (89.1 F) | 1.1 C (2.0 F) | 26 years | 14 of 100 (Routine) |
| 30 April 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily high min | 18.9 C (66.0 F) | 0.6 C (1.1 F) | 3 years | 6 of 100 (Routine) |
| 29 April 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily high max | 31.1 C (88.0 F) | 0.5 C (0.9 F) | 51 years | 20 of 100 (Routine) |
| 20 April 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily low min | -0.6 C (30.9 F) | 1.7 C (3.1 F) | 44 years | 20 of 100 (Routine) |
| 31 March 2013 | Mt Vernon UNIV Mo - SW Ctr, US | daily rain | 21.3 mm (0.8 in) | 3.0 mm (0.12 in) | 15 years | 11 of 100 (Routine) |
Climate Trend
48 complete years, 1961 to 2012| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1961 | 13.2 C | +0.10 C |
| 1962 | 13.8 C | +0.63 C |
| 1963 | 14.2 C | +1.03 C |
| 1964 | 14.1 C | +0.96 C |
| 1966 | 12.5 C | -0.67 C |
| 1967 | 12.8 C | -0.37 C |
| 1968 | 12.0 C | -1.18 C |
| 1969 | 12.6 C | -0.57 C |
| 1970 | 12.7 C | -0.44 C |
| 1971 | 13.3 C | +0.14 C |
| 1972 | 12.9 C | -0.22 C |
| 1973 | 13.4 C | +0.22 C |
| 1974 | 13.1 C | -0.06 C |
| 1975 | 13.1 C | -0.02 C |
| 1976 | 12.5 C | -0.66 C |
| 1977 | 13.5 C | +0.40 C |
| 1978 | 12.3 C | -0.79 C |
| 1979 | 11.2 C | -1.97 C |
| 1980 | 13.9 C | +0.73 C |
| 1981 | 13.4 C | +0.29 C |
| 1982 | 12.7 C | -0.42 C |
| 1984 | 13.2 C | +0.02 C |
| 1985 | 12.2 C | -0.89 C |
| 1986 | 13.9 C | +0.81 C |
| 1988 | 12.8 C | -0.30 C |
| 1989 | 12.0 C | -1.11 C |
| 1990 | 14.0 C | +0.84 C |
| 1992 | 13.2 C | +0.02 C |
| 1993 | 12.1 C | -1.04 C |
| 1994 | 13.1 C | -0.03 C |
| 1995 | 12.8 C | -0.37 C |
| 1996 | 12.1 C | -1.06 C |
| 1997 | 11.6 C | -1.55 C |
| 1998 | 13.7 C | +0.61 C |
| 1999 | 13.3 C | +0.18 C |
| 2000 | 12.7 C | -0.43 C |
| 2001 | 13.7 C | +0.56 C |
| 2002 | 13.3 C | +0.13 C |
| 2003 | 13.3 C | +0.15 C |
| 2004 | 13.6 C | +0.45 C |
| 2005 | 14.2 C | +1.08 C |
| 2006 | 14.4 C | +1.29 C |
| 2007 | 13.5 C | +0.37 C |
| 2008 | 12.9 C | -0.27 C |
| 2009 | 13.0 C | -0.15 C |
| 2010 | 13.8 C | +0.65 C |
| 2011 | 14.0 C | +0.89 C |
| 2012 | 15.0 C | +1.91 C |
The fitted trend in annual mean temperature here over 1961 to 2012 is 0.12 C (-0.03 to 0.26) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.21 F (-0.05 to 0.47) per decade. The slope is a straight line fitted to 48 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.12 C (-0.03 to 0.26) per decade | 0.21 F (-0.05 to 0.47) per decade | 1961 to 2012 | 48 | Not clearly different from zero |
| Mean daily maximum | 0.23 C (0.04 to 0.42) per decade | 0.4 F (0.1 to 0.8) per decade | 1961 to 2012 | 48 | Rise |
| Mean daily minimum | 0.01 C (-0.14 to 0.16) per decade | 0.02 F (-0.26 to 0.29) per decade | 1961 to 2012 | 48 | 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
1960 to 2013| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.3 C (109.9 F) | 2011 | 37.8 C (100.0 F) | 54 |
| Coldest night (TNn) | -27.8 C (-18.0 F) | 1979 | -20.6 C (-5.1 F) | 54 |
| Wettest day (Rx1day) | 208.3 mm (8.2 in) | 1993 | 82.6 mm (3.3 in) | 54 |
| Wettest five days (Rx5day) | 254.0 mm (10.0 in) | 1993 | 121.3 mm (4.8 in) | 54 |
| Longest dry spell (CDD) | 38 days | 1963 | 22 days | 54 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1960 | 36.7 C (98.1 F) |
| 1961 | 35.0 C (95.0 F) |
| 1962 | 37.8 C (100.0 F) |
| 1963 | 38.9 C (102.0 F) |
| 1964 | 40.0 C (104.0 F) |
| 1965 | 36.7 C (98.1 F) |
| 1966 | 38.9 C (102.0 F) |
| 1967 | 35.0 C (95.0 F) |
| 1968 | 36.1 C (97.0 F) |
| 1969 | 38.3 C (100.9 F) |
| 1970 | 40.0 C (104.0 F) |
| 1971 | 36.1 C (97.0 F) |
| 1972 | 37.2 C (99.0 F) |
| 1973 | 36.7 C (98.1 F) |
| 1974 | 39.4 C (102.9 F) |
| 1975 | 36.7 C (98.1 F) |
| 1976 | 35.0 C (95.0 F) |
| 1977 | 36.7 C (98.1 F) |
| 1978 | 37.8 C (100.0 F) |
| 1979 | 32.2 C (90.0 F) |
| 1980 | 41.1 C (106.0 F) |
| 1981 | 34.4 C (93.9 F) |
| 1982 | 37.8 C (100.0 F) |
| 1983 | 38.3 C (100.9 F) |
| 1984 | 39.4 C (102.9 F) |
| 1985 | 36.7 C (98.1 F) |
| 1986 | 41.1 C (106.0 F) |
| 1987 | 38.9 C (102.0 F) |
| 1988 | 37.8 C (100.0 F) |
| 1989 | 33.9 C (93.0 F) |
| 1990 | 38.3 C (100.9 F) |
| 1991 | 37.8 C (100.0 F) |
| 1992 | 33.3 C (91.9 F) |
| 1993 | 35.6 C (96.1 F) |
| 1994 | 36.7 C (98.1 F) |
| 1995 | 37.8 C (100.0 F) |
| 1996 | 36.1 C (97.0 F) |
| 1997 | 35.0 C (95.0 F) |
| 1998 | 39.4 C (102.9 F) |
| 1999 | 40.6 C (105.1 F) |
| 2000 | 41.1 C (106.0 F) |
| 2001 | 38.3 C (100.9 F) |
| 2002 | 35.6 C (96.1 F) |
| 2003 | 39.4 C (102.9 F) |
| 2004 | 35.0 C (95.0 F) |
| 2005 | 40.0 C (104.0 F) |
| 2006 | 39.4 C (102.9 F) |
| 2007 | 38.9 C (102.0 F) |
| 2008 | 36.7 C (98.1 F) |
| 2009 | 36.7 C (98.1 F) |
| 2010 | 40.0 C (104.0 F) |
| 2011 | 43.3 C (109.9 F) |
| 2012 | 42.2 C (108.0 F) |
| 2013 | 37.2 C (99.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1960 | -17.2 C (1.0 F) |
| 1961 | -17.8 C (0.0 F) |
| 1962 | -21.7 C (-7.1 F) |
| 1963 | -25.6 C (-14.1 F) |
| 1964 | -19.4 C (-2.9 F) |
| 1965 | -19.4 C (-2.9 F) |
| 1966 | -21.7 C (-7.1 F) |
| 1967 | -15.0 C (5.0 F) |
| 1968 | -23.9 C (-11.0 F) |
| 1969 | -18.3 C (-0.9 F) |
| 1970 | -21.1 C (-6.0 F) |
| 1971 | -23.3 C (-9.9 F) |
| 1972 | -18.9 C (-2.0 F) |
| 1973 | -21.1 C (-6.0 F) |
| 1974 | -21.1 C (-6.0 F) |
| 1975 | -15.6 C (3.9 F) |
| 1976 | -20.6 C (-5.1 F) |
| 1977 | -26.1 C (-15.0 F) |
| 1978 | -24.4 C (-11.9 F) |
| 1979 | -27.8 C (-18.0 F) |
| 1980 | -21.1 C (-6.0 F) |
| 1981 | -22.8 C (-9.0 F) |
| 1982 | -24.4 C (-11.9 F) |
| 1983 | -25.0 C (-13.0 F) |
| 1984 | -25.0 C (-13.0 F) |
| 1985 | -26.7 C (-16.1 F) |
| 1986 | -20.0 C (-4.0 F) |
| 1987 | -14.4 C (6.1 F) |
| 1988 | -21.1 C (-6.0 F) |
| 1989 | -27.2 C (-17.0 F) |
| 1990 | -22.2 C (-8.0 F) |
| 1991 | -15.0 C (5.0 F) |
| 1992 | -15.0 C (5.0 F) |
| 1993 | -22.8 C (-9.0 F) |
| 1994 | -20.0 C (-4.0 F) |
| 1995 | -20.6 C (-5.1 F) |
| 1996 | -23.9 C (-11.0 F) |
| 1997 | -25.0 C (-13.0 F) |
| 1998 | -17.2 C (1.0 F) |
| 1999 | -19.4 C (-2.9 F) |
| 2000 | -22.8 C (-9.0 F) |
| 2001 | -20.0 C (-4.0 F) |
| 2002 | -18.9 C (-2.0 F) |
| 2003 | -18.3 C (-0.9 F) |
| 2004 | -16.7 C (1.9 F) |
| 2005 | -16.7 C (1.9 F) |
| 2006 | -16.1 C (3.0 F) |
| 2007 | -15.6 C (3.9 F) |
| 2008 | -17.2 C (1.0 F) |
| 2009 | -15.6 C (3.9 F) |
| 2010 | -21.7 C (-7.1 F) |
| 2011 | -25.6 C (-14.1 F) |
| 2012 | -15.0 C (5.0 F) |
| 2013 | -11.7 C (10.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1960 | 40.1 mm (1.6 in) |
| 1961 | 92.7 mm (3.6 in) |
| 1962 | 71.1 mm (2.8 in) |
| 1963 | 96.5 mm (3.8 in) |
| 1964 | 67.3 mm (2.6 in) |
| 1965 | 57.4 mm (2.3 in) |
| 1966 | 43.2 mm (1.7 in) |
| 1967 | 56.4 mm (2.2 in) |
| 1968 | 71.1 mm (2.8 in) |
| 1969 | 53.8 mm (2.1 in) |
| 1970 | 88.9 mm (3.5 in) |
| 1971 | 87.4 mm (3.4 in) |
| 1972 | 89.4 mm (3.5 in) |
| 1973 | 70.1 mm (2.8 in) |
| 1974 | 85.9 mm (3.4 in) |
| 1975 | 58.2 mm (2.3 in) |
| 1976 | 95.3 mm (3.8 in) |
| 1977 | 80.5 mm (3.2 in) |
| 1978 | 50.5 mm (2.0 in) |
| 1979 | 122.4 mm (4.8 in) |
| 1980 | 77.5 mm (3.1 in) |
| 1981 | 87.1 mm (3.4 in) |
| 1982 | 87.6 mm (3.4 in) |
| 1983 | 113.5 mm (4.5 in) |
| 1984 | 72.4 mm (2.9 in) |
| 1985 | 88.1 mm (3.5 in) |
| 1986 | 145.8 mm (5.7 in) |
| 1987 | 121.4 mm (4.8 in) |
| 1988 | 97.3 mm (3.8 in) |
| 1989 | 73.7 mm (2.9 in) |
| 1990 | 58.4 mm (2.3 in) |
| 1991 | 56.4 mm (2.2 in) |
| 1992 | 102.1 mm (4.0 in) |
| 1993 | 208.3 mm (8.2 in) |
| 1994 | 92.2 mm (3.6 in) |
| 1995 | 58.7 mm (2.3 in) |
| 1996 | 95.8 mm (3.8 in) |
| 1997 | 55.9 mm (2.2 in) |
| 1998 | 70.9 mm (2.8 in) |
| 1999 | 49.0 mm (1.9 in) |
| 2000 | 56.4 mm (2.2 in) |
| 2001 | 57.9 mm (2.3 in) |
| 2002 | 63.5 mm (2.5 in) |
| 2003 | 44.5 mm (1.8 in) |
| 2004 | 108.2 mm (4.3 in) |
| 2005 | 88.6 mm (3.5 in) |
| 2006 | 91.2 mm (3.6 in) |
| 2007 | 84.6 mm (3.3 in) |
| 2008 | 104.1 mm (4.1 in) |
| 2009 | 166.4 mm (6.6 in) |
| 2010 | 63.5 mm (2.5 in) |
| 2011 | 97.8 mm (3.9 in) |
| 2012 | 61.5 mm (2.4 in) |
| 2013 | 91.7 mm (3.6 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1960 | 63.5 mm (2.5 in) |
| 1961 | 175.6 mm (6.9 in) |
| 1962 | 115.8 mm (4.6 in) |
| 1963 | 155.2 mm (6.1 in) |
| 1964 | 109.7 mm (4.3 in) |
| 1965 | 129.3 mm (5.1 in) |
| 1966 | 74.7 mm (2.9 in) |
| 1967 | 126.3 mm (5.0 in) |
| 1968 | 98.3 mm (3.9 in) |
| 1969 | 80.8 mm (3.2 in) |
| 1970 | 139.2 mm (5.5 in) |
| 1971 | 112.5 mm (4.4 in) |
| 1972 | 139.2 mm (5.5 in) |
| 1973 | 154.7 mm (6.1 in) |
| 1974 | 176.3 mm (6.9 in) |
| 1975 | 90.6 mm (3.6 in) |
| 1976 | 117.4 mm (4.6 in) |
| 1977 | 148.9 mm (5.9 in) |
| 1978 | 90.2 mm (3.6 in) |
| 1979 | 123.4 mm (4.9 in) |
| 1980 | 100.6 mm (4.0 in) |
| 1981 | 138.6 mm (5.5 in) |
| 1982 | 115.5 mm (4.5 in) |
| 1983 | 152.2 mm (6.0 in) |
| 1984 | 81.8 mm (3.2 in) |
| 1985 | 131.5 mm (5.2 in) |
| 1986 | 201.5 mm (7.9 in) |
| 1987 | 169.5 mm (6.7 in) |
| 1988 | 142.5 mm (5.6 in) |
| 1989 | 91.4 mm (3.6 in) |
| 1990 | 105.4 mm (4.1 in) |
| 1991 | 70.4 mm (2.8 in) |
| 1992 | 191.3 mm (7.5 in) |
| 1993 | 254.0 mm (10.0 in) |
| 1994 | 144.5 mm (5.7 in) |
| 1995 | 132.9 mm (5.2 in) |
| 1996 | 160.4 mm (6.3 in) |
| 1997 | 81.6 mm (3.2 in) |
| 1998 | 121.2 mm (4.8 in) |
| 1999 | 89.9 mm (3.5 in) |
| 2000 | 107.2 mm (4.2 in) |
| 2001 | 91.2 mm (3.6 in) |
| 2002 | 96.8 mm (3.8 in) |
| 2003 | 106.9 mm (4.2 in) |
| 2004 | 128.3 mm (5.1 in) |
| 2005 | 121.4 mm (4.8 in) |
| 2006 | 116.3 mm (4.6 in) |
| 2007 | 152.4 mm (6.0 in) |
| 2008 | 141.5 mm (5.6 in) |
| 2009 | 193.5 mm (7.6 in) |
| 2010 | 103.4 mm (4.1 in) |
| 2011 | 198.2 mm (7.8 in) |
| 2012 | 116.8 mm (4.6 in) |
| 2013 | 116.6 mm (4.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1960 | 20 days |
| 1961 | 32 days |
| 1962 | 19 days |
| 1963 | 38 days |
| 1964 | 18 days |
| 1965 | 15 days |
| 1966 | 30 days |
| 1967 | 26 days |
| 1968 | 34 days |
| 1969 | 17 days |
| 1970 | 22 days |
| 1971 | 26 days |
| 1972 | 18 days |
| 1973 | 19 days |
| 1974 | 18 days |
| 1975 | 25 days |
| 1976 | 24 days |
| 1977 | 19 days |
| 1978 | 21 days |
| 1979 | 31 days |
| 1980 | 28 days |
| 1981 | 27 days |
| 1982 | 18 days |
| 1983 | 26 days |
| 1984 | 17 days |
| 1985 | 23 days |
| 1986 | 23 days |
| 1987 | 23 days |
| 1988 | 18 days |
| 1989 | 22 days |
| 1990 | 16 days |
| 1991 | 20 days |
| 1992 | 23 days |
| 1993 | 19 days |
| 1994 | 23 days |
| 1995 | 24 days |
| 1996 | 23 days |
| 1997 | 24 days |
| 1998 | 17 days |
| 1999 | 27 days |
| 2000 | 24 days |
| 2001 | 17 days |
| 2002 | 18 days |
| 2003 | 14 days |
| 2004 | 28 days |
| 2005 | 15 days |
| 2006 | 38 days |
| 2007 | 20 days |
| 2008 | 22 days |
| 2009 | 20 days |
| 2010 | 17 days |
| 2011 | 24 days |
| 2012 | 24 days |
| 2013 | 16 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
48 years with a frostAcross 48 years with a frost, the median last spring frost at Mt Vernon UNIV Mo - SW Ctr falls on 18 April and the median first autumn frost on 15 October, which leaves a median of 181 days between them.
Fitted over all years, the growing season changes by -0.2 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1980 to 2012) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 18 April | n/a | 20 April | n/a | 0.0 days per decade |
| First autumn frost | 15 October | n/a | 14 October | n/a | -0.2 days per decade |
| Growing days | 181 days | n/a | 179 days | n/a | -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
52 years, 1961 to 2012A day with at least 77.1 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 188.2 mm (7.4 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 77.1 mm (3.0 in) | |
| 5 years | 102.7 mm (4.0 in) | |
| 10 years | 121.1 mm (4.8 in) | |
| 25 years | 146.4 mm (5.8 in) | |
| 50 years | 166.7 mm (6.6 in) | |
| 100 years | 188.2 mm (7.4 in) | Longer than the 52 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, 52 years of values from 1961 to 2012.
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: 208.3 mm (8.2 in) in 1993; 166.4 mm (6.6 in) in 2009; 145.8 mm (5.7 in) in 1986.
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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).