Leavenworth Weather Records (USC00144588)
Record envelope, standing records and threshold days for Leavenworth (USC00144588), Kansas, United States, with 121 years of record.
Key Facts for Leavenworth
- Leavenworth (USC00144588) is a weather station in Kansas, United States at 39.33 latitude and -94.92 longitude, 265 m (870 ft) above sea level.
- The station reports from 1891 to 2011, 121 years of record.
- 1,464 records set at Leavenworth still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Leavenworth tied a daily record low maximum temperature of 23.3 C (73.9 F) on 16 August 2011.
About the Station
- Location: Kansas, United States, 39.33 latitude, -94.92 longitude.
- Elevation: 265 m (870 ft).
- Period of record: 1891 to 2011, 121 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 | 22.8 C (73.0 F) | -30.0 C (-22.0 F) | n/a | n/a |
| Feb | 28.9 C (84.0 F) | -29.4 C (-20.9 F) | n/a | n/a |
| Mar | 32.2 C (90.0 F) | -23.3 C (-9.9 F) | n/a | n/a |
| Apr | 35.0 C (95.0 F) | -15.6 C (3.9 F) | n/a | n/a |
| May | 39.4 C (102.9 F) | -2.8 C (27.0 F) | n/a | n/a |
| Jun | 41.1 C (106.0 F) | 5.6 C (42.1 F) | n/a | n/a |
| Jul | 43.3 C (109.9 F) | 7.2 C (45.0 F) | n/a | n/a |
| Aug | 45.6 C (114.1 F) | 5.0 C (41.0 F) | n/a | n/a |
| Sep | 43.9 C (111.0 F) | -2.8 C (27.0 F) | n/a | n/a |
| Oct | 36.7 C (98.1 F) | -8.9 C (16.0 F) | n/a | n/a |
| Nov | 29.4 C (84.9 F) | -18.9 C (-2.0 F) | n/a | n/a |
| Dec | 23.9 C (75.0 F) | -32.8 C (-27.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1892 | 20 |
| 1893 | 10 |
| 1901 | 7 |
| 1902 | 12 |
| 1903 | 13 |
| 1904 | 10 |
| 1905 | 18 |
| 1911 | 31 |
| 1912 | 18 |
| 1913 | 24 |
| 1914 | 11 |
| 1915 | 15 |
| 1916 | 10 |
| 1917 | 18 |
| 1918 | 13 |
| 1919 | 8 |
| 1920 | 12 |
| 1921 | 22 |
| 1922 | 8 |
| 1923 | 11 |
| 1924 | 16 |
| 1925 | 16 |
| 1926 | 10 |
| 1927 | 15 |
| 1928 | 12 |
| 1929 | 8 |
| 1930 | 20 |
| 1931 | 19 |
| 1932 | 13 |
| 1933 | 27 |
| 1934 | 41 |
| 1935 | 10 |
| 1936 | 71 |
| 1937 | 20 |
| 1938 | 19 |
| 1939 | 37 |
| 1940 | 16 |
| 1941 | 11 |
| 1942 | 13 |
| 1943 | 18 |
| 1944 | 17 |
| 1945 | 8 |
| 1946 | 19 |
| 1947 | 19 |
| 1948 | 9 |
| 1949 | 8 |
| 1950 | 20 |
| 1951 | 10 |
| 1952 | 18 |
| 1953 | 11 |
| 1954 | 16 |
| 1955 | 9 |
| 1956 | 21 |
| 1957 | 5 |
| 1958 | 12 |
| 1959 | 12 |
| 1960 | 11 |
| 1961 | 6 |
| 1962 | 25 |
| 1963 | 15 |
| 1964 | 12 |
| 1965 | 19 |
| 1966 | 25 |
| 1967 | 17 |
| 1968 | 8 |
| 1969 | 3 |
| 1970 | 11 |
| 1971 | 10 |
| 1972 | 9 |
| 1974 | 11 |
| 1975 | 10 |
| 1976 | 11 |
| 1977 | 5 |
| 1978 | 7 |
| 1979 | 13 |
| 1980 | 20 |
| 1981 | 8 |
| 1982 | 6 |
| 1983 | 20 |
| 1984 | 17 |
| 1985 | 13 |
| 1986 | 16 |
| 1987 | 4 |
| 1988 | 8 |
| 1989 | 34 |
| 1990 | 8 |
| 1991 | 17 |
| 1992 | 10 |
| 1993 | 6 |
| 1994 | 8 |
| 1995 | 6 |
| 1996 | 9 |
| 1997 | 9 |
| 1998 | 2 |
| 1999 | 5 |
| 2000 | 17 |
| 2001 | 6 |
| 2002 | 9 |
| 2003 | 4 |
| 2004 | 10 |
| 2005 | 4 |
| 2006 | 8 |
| 2007 | 10 |
| 2008 | 7 |
| 2009 | 10 |
| 2010 | 3 |
| 2011 | 5 |
All-Time Record Progression
11 new records| Date | Kind | Detail |
|---|---|---|
| 1934-08-10 | Record high minimum temperature | Record high minimum temperature 33.3 C (91.9 F) |
| 1936-08-13 | Record high maximum temperature | Record high maximum temperature 43.9 C (111.0 F) |
| 1936-08-14 | Record high maximum temperature | Record high maximum temperature 45.6 C (114.1 F) |
| 1937-03-13 | Record daily precipitation | Record daily precipitation 114.3 mm (4.5 in) |
| 1938-07-17 | Record daily precipitation | Record daily precipitation 120.7 mm (4.8 in) |
| 1939-07-17 | Record high minimum temperature | Record high minimum temperature 36.7 C (98.1 F) |
| 1946-06-19 | Record daily precipitation | Record daily precipitation 122.7 mm (4.8 in) |
| 1977-09-12 | Record daily precipitation | Record daily precipitation 177.0 mm (7.0 in) |
| 1989-12-22 | Record low maximum temperature | Record low maximum temperature -22.8 C (-9.0 F) |
| 1989-12-23 | Record low minimum temperature | Record low minimum temperature -32.8 C (-27.0 F) |
| 2011-02-02 | Record daily snowfall | Record daily snowfall 32.0 cm (12.6 in) |
Wettest Day of Each Month
Sep: 177.0 mm (7.0 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 39.4 mm (1.6 in) | 30 January 1988 |
| Feb | 76.2 mm (3.0 in) | 27 February 2001 |
| Mar | 114.3 mm (4.5 in) | 13 March 1937 |
| Apr | 89.4 mm (3.5 in) | 1 April 1967 |
| May | 112.5 mm (4.4 in) | 15 May 1990 |
| Jun | 128.5 mm (5.1 in) | 19 June 2001 |
| Jul | 158.2 mm (6.2 in) | 7 July 1986 |
| Aug | 114.3 mm (4.5 in) | 20 August 1937 |
| Sep | 177.0 mm (7.0 in) | 12 September 1977 |
| Oct | 142.0 mm (5.6 in) | 2 October 2005 |
| Nov | 104.1 mm (4.1 in) | 7 November 1918 |
| Dec | 81.3 mm (3.2 in) | 7 December 1980 |
Period of Record Coverage
1891 to 2011| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1891 | 27 | 7% | No |
| 1892 | 351 | 96% | Yes |
| 1893 | 292 | 80% | No |
| 1901 | 324 | 89% | No |
| 1902 | 360 | 99% | Yes |
| 1903 | 358 | 98% | Yes |
| 1904 | 358 | 98% | Yes |
| 1905 | 360 | 99% | Yes |
| 1911 | 300 | 82% | No |
| 1912 | 359 | 98% | Yes |
| 1913 | 364 | 100% | Yes |
| 1914 | 362 | 99% | Yes |
| 1915 | 362 | 99% | Yes |
| 1916 | 343 | 94% | Yes |
| 1917 | 315 | 86% | No |
| 1918 | 353 | 97% | Yes |
| 1919 | 354 | 97% | Yes |
| 1920 | 362 | 99% | Yes |
| 1921 | 330 | 90% | Yes |
| 1922 | 331 | 91% | Yes |
| 1923 | 363 | 99% | Yes |
| 1924 | 347 | 95% | Yes |
| 1925 | 324 | 89% | No |
| 1926 | 358 | 98% | Yes |
| 1927 | 326 | 89% | No |
| 1928 | 323 | 88% | No |
| 1929 | 363 | 99% | Yes |
| 1930 | 345 | 95% | Yes |
| 1931 | 359 | 98% | Yes |
| 1932 | 350 | 96% | Yes |
| 1933 | 344 | 94% | Yes |
| 1934 | 352 | 96% | Yes |
| 1935 | 362 | 99% | Yes |
| 1936 | 351 | 96% | Yes |
| 1937 | 342 | 94% | Yes |
| 1938 | 362 | 99% | Yes |
| 1939 | 357 | 98% | Yes |
| 1940 | 360 | 98% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 364 | 100% | Yes |
| 1944 | 358 | 98% | Yes |
| 1945 | 363 | 99% | Yes |
| 1946 | 313 | 86% | No |
| 1947 | 355 | 97% | Yes |
| 1948 | 354 | 97% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 363 | 99% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 363 | 99% | Yes |
| 1953 | 331 | 91% | Yes |
| 1954 | 361 | 99% | Yes |
| 1955 | 360 | 99% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 364 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 362 | 99% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 361 | 99% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 305 | 83% | No |
| 1969 | 362 | 99% | Yes |
| 1970 | 282 | 77% | No |
| 1971 | 290 | 79% | No |
| 1972 | 306 | 84% | No |
| 1973 | 239 | 65% | No |
| 1974 | 362 | 99% | Yes |
| 1975 | 359 | 98% | Yes |
| 1976 | 361 | 99% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 363 | 99% | Yes |
| 1980 | 363 | 99% | Yes |
| 1981 | 332 | 91% | Yes |
| 1982 | 248 | 68% | No |
| 1983 | 360 | 99% | Yes |
| 1984 | 355 | 97% | Yes |
| 1985 | 353 | 97% | Yes |
| 1986 | 356 | 98% | Yes |
| 1987 | 357 | 98% | Yes |
| 1988 | 351 | 96% | Yes |
| 1989 | 360 | 99% | Yes |
| 1990 | 342 | 94% | Yes |
| 1991 | 362 | 99% | Yes |
| 1992 | 352 | 96% | Yes |
| 1993 | 354 | 97% | Yes |
| 1994 | 350 | 96% | Yes |
| 1995 | 348 | 95% | Yes |
| 1996 | 343 | 94% | Yes |
| 1997 | 357 | 98% | Yes |
| 1998 | 87 | 24% | No |
| 1999 | 344 | 94% | Yes |
| 2000 | 321 | 88% | No |
| 2001 | 328 | 90% | No |
| 2002 | 327 | 90% | No |
| 2003 | 359 | 98% | Yes |
| 2004 | 354 | 97% | Yes |
| 2005 | 347 | 95% | Yes |
| 2006 | 345 | 95% | Yes |
| 2007 | 347 | 95% | Yes |
| 2008 | 334 | 91% | Yes |
| 2009 | 325 | 89% | No |
| 2010 | 310 | 85% | No |
| 2011 | 213 | 58% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 16 August 2011 | Leavenworth, US | daily low max (Tie) | 23.3 C (73.9 F) | tie | 57 years | 6 of 100 (Routine) |
| 3 August 2011 | Leavenworth, US | daily high min (Tie) | 25.6 C (78.1 F) | tie | 64 years | 7 of 100 (Routine) |
| 28 July 2011 | Leavenworth, US | daily high min | 27.2 C (81.0 F) | 1.6 C (2.9 F) | 70 years | 35 of 100 (Notable) |
| 28 May 2011 | Leavenworth, US | daily low max (Tie) | 16.1 C (61.0 F) | tie | 26 years | 4 of 100 (Routine) |
| 25 May 2011 | Leavenworth, US | daily rain | 60.5 mm (2.4 in) | 30.5 mm (1.2 in) | 105 years | 60 of 100 (Major) |
| 17 May 2011 | Leavenworth, US | daily low min | 3.9 C (39.0 F) | 0.5 C (0.9 F) | 88 years | 37 of 100 (Notable) |
| 11 May 2011 | Leavenworth, US | daily high min (Tie) | 21.7 C (71.1 F) | tie | 96 years | 9 of 100 (Routine) |
| 10 May 2011 | Leavenworth, US | daily high max | 32.8 C (91.0 F) | 0.6 C (1.1 F) | 100 years | 41 of 100 (Notable) |
| 10 May 2011 | Leavenworth, US | daily high min | 23.3 C (73.9 F) | 1.1 C (2.0 F) | 54 years | 28 of 100 (Routine) |
| 4 April 2011 | Leavenworth, US | daily high max (Tie) | 32.2 C (90.0 F) | tie | 68 years | 7 of 100 (Routine) |
| 22 March 2011 | Leavenworth, US | daily high min | 15.0 C (59.0 F) | 1.7 C (3.1 F) | 76 years | 34 of 100 (Routine) |
| 27 February 2011 | Leavenworth, US | daily snow depth | 20.3 cm (8.0 in) | 10.1 cm (4.0 in) | 72 years | 49 of 100 (Notable) |
| 26 February 2011 | Leavenworth, US | daily snow depth | 22.9 cm (9.0 in) | 7.7 cm (3.0 in) | 17 years | 29 of 100 (Routine) |
| 25 February 2011 | Leavenworth, US | daily rain | 21.1 mm (0.8 in) | 0.8 mm (0.03 in) | 99 years | 20 of 100 (Routine) |
| 25 February 2011 | Leavenworth, US | daily snowfall | 22.1 cm (8.7 in) | 9.1 cm (3.6 in) | 17 years | 34 of 100 (Routine) |
| 25 February 2011 | Leavenworth, US | daily snow depth | 22.9 cm (9.0 in) | 10.2 cm (4.0 in) | 17 years | 33 of 100 (Routine) |
| 6 February 2011 | Leavenworth, US | daily snow depth | 20.3 cm (8.0 in) | 2.5 cm (1.0 in) | 7 years | 16 of 100 (Routine) |
| 5 February 2011 | Leavenworth, US | daily snow depth | 30.5 cm (12.0 in) | 12.7 cm (5.0 in) | 105 years | 63 of 100 (Major) |
| 4 February 2011 | Leavenworth, US | monthly snow depth (Tie) | 33.0 cm (13.0 in) | tie | 0 years | 5 of 100 (Routine) |
| 3 February 2011 | Leavenworth, US | monthly snow depth (Tie) | 33.0 cm (13.0 in) | tie | 0 years | 5 of 100 (Routine) |
Climate Trend
76 complete years, 1892 to 2009| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1892 | 11.4 C | -1.33 C |
| 1901 | 13.5 C | +0.73 C |
| 1903 | 11.9 C | -0.88 C |
| 1904 | 12.3 C | -0.46 C |
| 1905 | 12.5 C | -0.30 C |
| 1912 | 11.6 C | -1.15 C |
| 1913 | 13.6 C | +0.89 C |
| 1914 | 13.7 C | +0.93 C |
| 1915 | 13.0 C | +0.22 C |
| 1918 | 13.3 C | +0.52 C |
| 1919 | 12.8 C | +0.04 C |
| 1920 | 12.4 C | -0.38 C |
| 1923 | 12.6 C | -0.12 C |
| 1929 | 12.1 C | -0.68 C |
| 1931 | 14.8 C | +2.05 C |
| 1932 | 13.0 C | +0.23 C |
| 1934 | 14.6 C | +1.83 C |
| 1935 | 13.2 C | +0.45 C |
| 1936 | 13.4 C | +0.64 C |
| 1937 | 12.4 C | -0.35 C |
| 1938 | 14.9 C | +2.17 C |
| 1939 | 15.0 C | +2.21 C |
| 1941 | 13.8 C | +1.08 C |
| 1942 | 12.9 C | +0.10 C |
| 1943 | 12.5 C | -0.22 C |
| 1944 | 13.2 C | +0.42 C |
| 1945 | 12.7 C | -0.10 C |
| 1947 | 13.7 C | +0.95 C |
| 1948 | 13.3 C | +0.55 C |
| 1949 | 13.3 C | +0.50 C |
| 1950 | 12.1 C | -0.68 C |
| 1951 | 11.9 C | -0.87 C |
| 1952 | 13.5 C | +0.75 C |
| 1954 | 13.8 C | +1.03 C |
| 1955 | 12.6 C | -0.18 C |
| 1956 | 13.2 C | +0.45 C |
| 1957 | 12.3 C | -0.50 C |
| 1958 | 12.0 C | -0.76 C |
| 1959 | 12.1 C | -0.61 C |
| 1960 | 11.7 C | -1.10 C |
| 1961 | 11.3 C | -1.45 C |
| 1962 | 11.4 C | -1.33 C |
| 1963 | 12.8 C | 0.00 C |
| 1964 | 12.9 C | +0.17 C |
| 1965 | 12.9 C | +0.11 C |
| 1966 | 12.2 C | -0.60 C |
| 1967 | 12.0 C | -0.73 C |
| 1969 | 11.7 C | -1.01 C |
| 1974 | 12.9 C | +0.19 C |
| 1975 | 12.9 C | +0.17 C |
| 1976 | 12.7 C | -0.07 C |
| 1977 | 12.7 C | -0.03 C |
| 1978 | 11.4 C | -1.38 C |
| 1979 | 11.1 C | -1.64 C |
| 1980 | 13.0 C | +0.21 C |
| 1983 | 11.7 C | -1.05 C |
| 1984 | 11.7 C | -1.07 C |
| 1985 | 11.3 C | -1.50 C |
| 1986 | 13.3 C | +0.55 C |
| 1987 | 14.0 C | +1.29 C |
| 1988 | 12.4 C | -0.31 C |
| 1989 | 10.4 C | -2.33 C |
| 1991 | 13.9 C | +1.15 C |
| 1992 | 12.9 C | +0.10 C |
| 1993 | 11.7 C | -1.02 C |
| 1994 | 13.1 C | +0.33 C |
| 1995 | 12.8 C | 0.00 C |
| 1997 | 12.8 C | +0.09 C |
| 1999 | 13.7 C | +0.95 C |
| 2003 | 13.5 C | +0.71 C |
| 2004 | 13.4 C | +0.60 C |
| 2005 | 14.0 C | +1.22 C |
| 2006 | 14.5 C | +1.75 C |
| 2007 | 13.1 C | +0.30 C |
| 2008 | 11.3 C | -1.42 C |
| 2009 | 11.8 C | -0.98 C |
The fitted trend in annual mean temperature here over 1892 to 2009 is -0.03 C (-0.10 to 0.05) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.05 F (-0.18 to 0.08) per decade. The slope is a straight line fitted to 76 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.03 C (-0.10 to 0.05) per decade | -0.05 F (-0.18 to 0.08) per decade | 1892 to 2009 | 76 | Not clearly different from zero |
| Mean daily maximum | -0.02 C (-0.10 to 0.06) per decade | -0.04 F (-0.18 to 0.11) per decade | 1892 to 2009 | 76 | Not clearly different from zero |
| Mean daily minimum | -0.03 C (-0.11 to 0.04) per decade | -0.1 F (-0.2 to 0.1) per decade | 1892 to 2009 | 76 | 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
1891 to 2011| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 45.6 C (114.1 F) | 1936 | 38.3 C (100.9 F) | 109 |
| Coldest night (TNn) | -32.8 C (-27.0 F) | 1989 | -21.7 C (-7.1 F) | 109 |
| Wettest day (Rx1day) | 177.0 mm (7.0 in) | 1977 | 71.1 mm (2.8 in) | 109 |
| Wettest five days (Rx5day) | 265.9 mm (10.5 in) | 1986 | 110.0 mm (4.3 in) | 109 |
| Longest dry spell (CDD) | 56 days | 1956 | 28 days | 109 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1891 | 17.8 C (64.0 F) |
| 1892 | 36.7 C (98.1 F) |
| 1893 | 37.8 C (100.0 F) |
| 1901 | 42.2 C (108.0 F) |
| 1902 | 36.7 C (98.1 F) |
| 1903 | 36.1 C (97.0 F) |
| 1904 | 36.1 C (97.0 F) |
| 1905 | 36.7 C (98.1 F) |
| 1911 | 41.7 C (107.1 F) |
| 1912 | 38.3 C (100.9 F) |
| 1913 | 40.6 C (105.1 F) |
| 1914 | 38.3 C (100.9 F) |
| 1915 | 34.4 C (93.9 F) |
| 1916 | 39.4 C (102.9 F) |
| 1917 | 39.4 C (102.9 F) |
| 1918 | 43.3 C (109.9 F) |
| 1919 | 38.3 C (100.9 F) |
| 1920 | 36.7 C (98.1 F) |
| 1921 | 37.8 C (100.0 F) |
| 1922 | 38.9 C (102.0 F) |
| 1923 | 36.1 C (97.0 F) |
| 1924 | 35.6 C (96.1 F) |
| 1925 | 37.8 C (100.0 F) |
| 1926 | 41.7 C (107.1 F) |
| 1927 | 35.0 C (95.0 F) |
| 1928 | 35.0 C (95.0 F) |
| 1929 | 38.3 C (100.9 F) |
| 1930 | 41.1 C (106.0 F) |
| 1931 | 38.9 C (102.0 F) |
| 1932 | 37.2 C (99.0 F) |
| 1933 | 40.0 C (104.0 F) |
| 1934 | 43.3 C (109.9 F) |
| 1935 | 38.9 C (102.0 F) |
| 1936 | 45.6 C (114.1 F) |
| 1937 | 40.0 C (104.0 F) |
| 1938 | 39.4 C (102.9 F) |
| 1939 | 42.8 C (109.0 F) |
| 1940 | 38.9 C (102.0 F) |
| 1941 | 38.3 C (100.9 F) |
| 1942 | 36.7 C (98.1 F) |
| 1943 | 36.7 C (98.1 F) |
| 1944 | 36.7 C (98.1 F) |
| 1945 | 36.7 C (98.1 F) |
| 1946 | 37.8 C (100.0 F) |
| 1947 | 43.9 C (111.0 F) |
| 1948 | 37.2 C (99.0 F) |
| 1949 | 36.1 C (97.0 F) |
| 1950 | 35.6 C (96.1 F) |
| 1951 | 36.7 C (98.1 F) |
| 1952 | 40.0 C (104.0 F) |
| 1953 | 40.6 C (105.1 F) |
| 1954 | 43.3 C (109.9 F) |
| 1955 | 39.4 C (102.9 F) |
| 1956 | 38.3 C (100.9 F) |
| 1957 | 38.9 C (102.0 F) |
| 1958 | 38.3 C (100.9 F) |
| 1959 | 37.8 C (100.0 F) |
| 1960 | 36.7 C (98.1 F) |
| 1961 | 36.1 C (97.0 F) |
| 1962 | 38.3 C (100.9 F) |
| 1963 | 38.9 C (102.0 F) |
| 1964 | 38.9 C (102.0 F) |
| 1965 | 35.6 C (96.1 F) |
| 1966 | 38.3 C (100.9 F) |
| 1967 | 36.7 C (98.1 F) |
| 1968 | 36.1 C (97.0 F) |
| 1969 | 35.6 C (96.1 F) |
| 1970 | 40.0 C (104.0 F) |
| 1971 | 36.1 C (97.0 F) |
| 1972 | 35.0 C (95.0 F) |
| 1973 | 37.2 C (99.0 F) |
| 1974 | 41.7 C (107.1 F) |
| 1975 | 39.4 C (102.9 F) |
| 1976 | 39.4 C (102.9 F) |
| 1977 | 37.2 C (99.0 F) |
| 1978 | 37.8 C (100.0 F) |
| 1979 | 35.0 C (95.0 F) |
| 1980 | 42.2 C (108.0 F) |
| 1981 | 36.1 C (97.0 F) |
| 1982 | 37.8 C (100.0 F) |
| 1983 | 40.6 C (105.1 F) |
| 1984 | 42.2 C (108.0 F) |
| 1985 | 37.2 C (99.0 F) |
| 1986 | 38.3 C (100.9 F) |
| 1987 | 39.4 C (102.9 F) |
| 1988 | 38.9 C (102.0 F) |
| 1989 | 36.7 C (98.1 F) |
| 1990 | 37.2 C (99.0 F) |
| 1991 | 39.4 C (102.9 F) |
| 1992 | 33.9 C (93.0 F) |
| 1993 | 36.1 C (97.0 F) |
| 1994 | 35.6 C (96.1 F) |
| 1995 | 38.3 C (100.9 F) |
| 1996 | 35.6 C (96.1 F) |
| 1997 | 37.2 C (99.0 F) |
| 1998 | 25.0 C (77.0 F) |
| 1999 | 39.4 C (102.9 F) |
| 2000 | 38.9 C (102.0 F) |
| 2001 | 37.2 C (99.0 F) |
| 2002 | 40.0 C (104.0 F) |
| 2003 | 41.1 C (106.0 F) |
| 2004 | 37.8 C (100.0 F) |
| 2005 | 39.4 C (102.9 F) |
| 2006 | 40.0 C (104.0 F) |
| 2007 | 39.4 C (102.9 F) |
| 2008 | 37.8 C (100.0 F) |
| 2009 | 37.8 C (100.0 F) |
| 2010 | 40.0 C (104.0 F) |
| 2011 | 42.2 C (108.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1891 | -12.2 C (10.0 F) |
| 1892 | -28.9 C (-20.0 F) |
| 1893 | -22.2 C (-8.0 F) |
| 1901 | -22.8 C (-9.0 F) |
| 1902 | -22.2 C (-8.0 F) |
| 1903 | -23.3 C (-9.9 F) |
| 1904 | -23.9 C (-11.0 F) |
| 1905 | -29.4 C (-20.9 F) |
| 1911 | -20.0 C (-4.0 F) |
| 1912 | -30.0 C (-22.0 F) |
| 1913 | -20.0 C (-4.0 F) |
| 1914 | -21.7 C (-7.1 F) |
| 1915 | -23.3 C (-9.9 F) |
| 1916 | -26.7 C (-16.1 F) |
| 1917 | -25.0 C (-13.0 F) |
| 1918 | -26.7 C (-16.1 F) |
| 1919 | -26.1 C (-15.0 F) |
| 1920 | -18.9 C (-2.0 F) |
| 1921 | -15.6 C (3.9 F) |
| 1922 | -16.7 C (1.9 F) |
| 1923 | -18.9 C (-2.0 F) |
| 1924 | -27.2 C (-17.0 F) |
| 1925 | -18.9 C (-2.0 F) |
| 1926 | -18.9 C (-2.0 F) |
| 1927 | -26.1 C (-15.0 F) |
| 1928 | -22.2 C (-8.0 F) |
| 1929 | -24.4 C (-11.9 F) |
| 1930 | -27.2 C (-17.0 F) |
| 1931 | -15.0 C (5.0 F) |
| 1932 | -24.4 C (-11.9 F) |
| 1933 | -25.6 C (-14.1 F) |
| 1934 | -23.9 C (-11.0 F) |
| 1935 | -21.1 C (-6.0 F) |
| 1936 | -23.3 C (-9.9 F) |
| 1937 | -17.2 C (1.0 F) |
| 1938 | -18.3 C (-0.9 F) |
| 1939 | -18.9 C (-2.0 F) |
| 1940 | -25.6 C (-14.1 F) |
| 1941 | -15.0 C (5.0 F) |
| 1942 | -21.7 C (-7.1 F) |
| 1943 | -27.8 C (-18.0 F) |
| 1944 | -23.9 C (-11.0 F) |
| 1945 | -23.3 C (-9.9 F) |
| 1946 | -16.7 C (1.9 F) |
| 1947 | -27.8 C (-18.0 F) |
| 1948 | -21.7 C (-7.1 F) |
| 1949 | -20.6 C (-5.1 F) |
| 1950 | -19.4 C (-2.9 F) |
| 1951 | -22.2 C (-8.0 F) |
| 1952 | -15.6 C (3.9 F) |
| 1953 | -17.8 C (0.0 F) |
| 1954 | -20.6 C (-5.1 F) |
| 1955 | -19.4 C (-2.9 F) |
| 1956 | -17.8 C (0.0 F) |
| 1957 | -18.9 C (-2.0 F) |
| 1958 | -19.4 C (-2.9 F) |
| 1959 | -23.9 C (-11.0 F) |
| 1960 | -18.9 C (-2.0 F) |
| 1961 | -25.0 C (-13.0 F) |
| 1962 | -24.4 C (-11.9 F) |
| 1963 | -24.4 C (-11.9 F) |
| 1964 | -20.6 C (-5.1 F) |
| 1965 | -21.7 C (-7.1 F) |
| 1966 | -24.4 C (-11.9 F) |
| 1967 | -20.0 C (-4.0 F) |
| 1968 | -27.2 C (-17.0 F) |
| 1969 | -20.0 C (-4.0 F) |
| 1970 | -23.3 C (-9.9 F) |
| 1971 | -19.4 C (-2.9 F) |
| 1972 | -24.4 C (-11.9 F) |
| 1973 | -21.1 C (-6.0 F) |
| 1974 | -25.0 C (-13.0 F) |
| 1975 | -18.9 C (-2.0 F) |
| 1976 | -22.8 C (-9.0 F) |
| 1977 | -23.9 C (-11.0 F) |
| 1978 | -23.9 C (-11.0 F) |
| 1979 | -28.3 C (-18.9 F) |
| 1980 | -22.2 C (-8.0 F) |
| 1981 | -23.9 C (-11.0 F) |
| 1982 | -27.2 C (-17.0 F) |
| 1983 | -28.3 C (-18.9 F) |
| 1984 | -25.0 C (-13.0 F) |
| 1985 | -25.0 C (-13.0 F) |
| 1986 | -17.8 C (0.0 F) |
| 1987 | -13.9 C (7.0 F) |
| 1988 | -23.9 C (-11.0 F) |
| 1989 | -32.8 C (-27.0 F) |
| 1990 | -21.1 C (-6.0 F) |
| 1991 | -21.1 C (-6.0 F) |
| 1992 | -16.1 C (3.0 F) |
| 1993 | -17.2 C (1.0 F) |
| 1994 | -19.4 C (-2.9 F) |
| 1995 | -19.4 C (-2.9 F) |
| 1996 | -25.0 C (-13.0 F) |
| 1997 | -23.9 C (-11.0 F) |
| 1998 | -22.8 C (-9.0 F) |
| 1999 | -18.3 C (-0.9 F) |
| 2000 | -17.2 C (1.0 F) |
| 2001 | -19.4 C (-2.9 F) |
| 2002 | -11.7 C (10.9 F) |
| 2003 | -19.4 C (-2.9 F) |
| 2004 | -17.2 C (1.0 F) |
| 2005 | -17.8 C (0.0 F) |
| 2006 | -15.6 C (3.9 F) |
| 2007 | -17.2 C (1.0 F) |
| 2008 | -18.9 C (-2.0 F) |
| 2009 | -19.4 C (-2.9 F) |
| 2010 | -18.3 C (-0.9 F) |
| 2011 | -19.4 C (-2.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1891 | 13.7 mm (0.5 in) |
| 1892 | 53.8 mm (2.1 in) |
| 1893 | 58.4 mm (2.3 in) |
| 1901 | 61.0 mm (2.4 in) |
| 1902 | 76.2 mm (3.0 in) |
| 1903 | 71.1 mm (2.8 in) |
| 1904 | 88.4 mm (3.5 in) |
| 1905 | 74.2 mm (2.9 in) |
| 1911 | 68.6 mm (2.7 in) |
| 1912 | 53.8 mm (2.1 in) |
| 1913 | 47.2 mm (1.9 in) |
| 1914 | 99.1 mm (3.9 in) |
| 1915 | 61.0 mm (2.4 in) |
| 1916 | 66.5 mm (2.6 in) |
| 1917 | 40.6 mm (1.6 in) |
| 1918 | 104.1 mm (4.1 in) |
| 1919 | 67.3 mm (2.6 in) |
| 1920 | 55.9 mm (2.2 in) |
| 1921 | 69.1 mm (2.7 in) |
| 1922 | 69.9 mm (2.8 in) |
| 1923 | 65.0 mm (2.6 in) |
| 1924 | 88.4 mm (3.5 in) |
| 1925 | 76.2 mm (3.0 in) |
| 1926 | 38.9 mm (1.5 in) |
| 1927 | 59.7 mm (2.4 in) |
| 1928 | 64.8 mm (2.6 in) |
| 1929 | 59.7 mm (2.4 in) |
| 1930 | 67.3 mm (2.6 in) |
| 1931 | 99.6 mm (3.9 in) |
| 1932 | 47.8 mm (1.9 in) |
| 1933 | 66.8 mm (2.6 in) |
| 1934 | 43.2 mm (1.7 in) |
| 1935 | 78.7 mm (3.1 in) |
| 1936 | 63.2 mm (2.5 in) |
| 1937 | 114.3 mm (4.5 in) |
| 1938 | 120.7 mm (4.8 in) |
| 1939 | 69.3 mm (2.7 in) |
| 1940 | 81.3 mm (3.2 in) |
| 1941 | 74.7 mm (2.9 in) |
| 1942 | 81.3 mm (3.2 in) |
| 1943 | 83.8 mm (3.3 in) |
| 1944 | 76.2 mm (3.0 in) |
| 1945 | 52.8 mm (2.1 in) |
| 1946 | 122.7 mm (4.8 in) |
| 1947 | 83.8 mm (3.3 in) |
| 1948 | 70.1 mm (2.8 in) |
| 1949 | 63.0 mm (2.5 in) |
| 1950 | 79.5 mm (3.1 in) |
| 1951 | 87.6 mm (3.4 in) |
| 1952 | 66.3 mm (2.6 in) |
| 1953 | 31.0 mm (1.2 in) |
| 1954 | 72.6 mm (2.9 in) |
| 1955 | 40.4 mm (1.6 in) |
| 1956 | 64.8 mm (2.6 in) |
| 1957 | 71.1 mm (2.8 in) |
| 1958 | 102.4 mm (4.0 in) |
| 1959 | 70.6 mm (2.8 in) |
| 1960 | 92.5 mm (3.6 in) |
| 1961 | 95.0 mm (3.7 in) |
| 1962 | 110.5 mm (4.4 in) |
| 1963 | 46.7 mm (1.8 in) |
| 1964 | 102.9 mm (4.1 in) |
| 1965 | 61.5 mm (2.4 in) |
| 1966 | 45.7 mm (1.8 in) |
| 1967 | 89.4 mm (3.5 in) |
| 1968 | 55.4 mm (2.2 in) |
| 1969 | 63.0 mm (2.5 in) |
| 1970 | 65.5 mm (2.6 in) |
| 1971 | 46.0 mm (1.8 in) |
| 1972 | 75.4 mm (3.0 in) |
| 1973 | 80.5 mm (3.2 in) |
| 1974 | 94.0 mm (3.7 in) |
| 1975 | 103.4 mm (4.1 in) |
| 1976 | 109.0 mm (4.3 in) |
| 1977 | 177.0 mm (7.0 in) |
| 1978 | 63.0 mm (2.5 in) |
| 1979 | 59.7 mm (2.4 in) |
| 1980 | 81.3 mm (3.2 in) |
| 1981 | 93.7 mm (3.7 in) |
| 1982 | 66.5 mm (2.6 in) |
| 1983 | 61.7 mm (2.4 in) |
| 1984 | 91.9 mm (3.6 in) |
| 1985 | 92.5 mm (3.6 in) |
| 1986 | 158.2 mm (6.2 in) |
| 1987 | 116.8 mm (4.6 in) |
| 1988 | 86.6 mm (3.4 in) |
| 1989 | 73.2 mm (2.9 in) |
| 1990 | 112.5 mm (4.4 in) |
| 1991 | 61.2 mm (2.4 in) |
| 1992 | 78.5 mm (3.1 in) |
| 1993 | 81.5 mm (3.2 in) |
| 1994 | 63.0 mm (2.5 in) |
| 1995 | 77.7 mm (3.1 in) |
| 1996 | 86.6 mm (3.4 in) |
| 1997 | 55.1 mm (2.2 in) |
| 1998 | 38.6 mm (1.5 in) |
| 1999 | 64.5 mm (2.5 in) |
| 2000 | 74.9 mm (2.9 in) |
| 2001 | 128.5 mm (5.1 in) |
| 2002 | 63.5 mm (2.5 in) |
| 2003 | 84.1 mm (3.3 in) |
| 2004 | 50.0 mm (2.0 in) |
| 2005 | 142.0 mm (5.6 in) |
| 2006 | 70.6 mm (2.8 in) |
| 2007 | 87.9 mm (3.5 in) |
| 2008 | 83.3 mm (3.3 in) |
| 2009 | 76.2 mm (3.0 in) |
| 2010 | 66.0 mm (2.6 in) |
| 2011 | 60.5 mm (2.4 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1891 | 23.6 mm (0.9 in) |
| 1892 | 80.8 mm (3.2 in) |
| 1893 | 85.9 mm (3.4 in) |
| 1901 | 82.6 mm (3.3 in) |
| 1902 | 78.5 mm (3.1 in) |
| 1903 | 117.1 mm (4.6 in) |
| 1904 | 169.2 mm (6.7 in) |
| 1905 | 186.4 mm (7.3 in) |
| 1911 | 90.5 mm (3.6 in) |
| 1912 | 79.0 mm (3.1 in) |
| 1913 | 98.1 mm (3.9 in) |
| 1914 | 104.2 mm (4.1 in) |
| 1915 | 168.9 mm (6.6 in) |
| 1916 | 75.4 mm (3.0 in) |
| 1917 | 91.2 mm (3.6 in) |
| 1918 | 113.1 mm (4.5 in) |
| 1919 | 90.6 mm (3.6 in) |
| 1920 | 120.0 mm (4.7 in) |
| 1921 | 151.1 mm (5.9 in) |
| 1922 | 132.6 mm (5.2 in) |
| 1923 | 100.0 mm (3.9 in) |
| 1924 | 97.8 mm (3.9 in) |
| 1925 | 59.1 mm (2.3 in) |
| 1926 | 76.7 mm (3.0 in) |
| 1927 | 71.1 mm (2.8 in) |
| 1928 | 134.1 mm (5.3 in) |
| 1929 | 178.9 mm (7.0 in) |
| 1930 | 89.1 mm (3.5 in) |
| 1931 | 138.7 mm (5.5 in) |
| 1932 | 54.4 mm (2.1 in) |
| 1933 | 96.7 mm (3.8 in) |
| 1934 | 71.4 mm (2.8 in) |
| 1935 | 114.4 mm (4.5 in) |
| 1936 | 68.1 mm (2.7 in) |
| 1937 | 127.5 mm (5.0 in) |
| 1938 | 127.3 mm (5.0 in) |
| 1939 | 96.6 mm (3.8 in) |
| 1940 | 85.5 mm (3.4 in) |
| 1941 | 81.3 mm (3.2 in) |
| 1942 | 110.0 mm (4.3 in) |
| 1943 | 154.3 mm (6.1 in) |
| 1944 | 99.9 mm (3.9 in) |
| 1945 | 113.5 mm (4.5 in) |
| 1946 | 125.0 mm (4.9 in) |
| 1947 | 116.8 mm (4.6 in) |
| 1948 | 109.0 mm (4.3 in) |
| 1949 | 82.6 mm (3.3 in) |
| 1950 | 125.3 mm (4.9 in) |
| 1951 | 151.8 mm (6.0 in) |
| 1952 | 81.8 mm (3.2 in) |
| 1953 | 55.4 mm (2.2 in) |
| 1954 | 84.3 mm (3.3 in) |
| 1955 | 76.2 mm (3.0 in) |
| 1956 | 84.6 mm (3.3 in) |
| 1957 | 91.2 mm (3.6 in) |
| 1958 | 139.7 mm (5.5 in) |
| 1959 | 117.3 mm (4.6 in) |
| 1960 | 123.9 mm (4.9 in) |
| 1961 | 156.0 mm (6.1 in) |
| 1962 | 114.8 mm (4.5 in) |
| 1963 | 56.2 mm (2.2 in) |
| 1964 | 120.8 mm (4.8 in) |
| 1965 | 115.6 mm (4.6 in) |
| 1966 | 81.0 mm (3.2 in) |
| 1967 | 123.6 mm (4.9 in) |
| 1968 | 91.7 mm (3.6 in) |
| 1969 | 107.7 mm (4.2 in) |
| 1970 | 153.9 mm (6.1 in) |
| 1971 | 51.0 mm (2.0 in) |
| 1972 | 88.1 mm (3.5 in) |
| 1973 | 144.8 mm (5.7 in) |
| 1974 | 169.2 mm (6.7 in) |
| 1975 | 113.9 mm (4.5 in) |
| 1976 | 109.5 mm (4.3 in) |
| 1977 | 262.1 mm (10.3 in) |
| 1978 | 90.0 mm (3.5 in) |
| 1979 | 87.2 mm (3.4 in) |
| 1980 | 117.6 mm (4.6 in) |
| 1981 | 124.7 mm (4.9 in) |
| 1982 | 112.5 mm (4.4 in) |
| 1983 | 126.0 mm (5.0 in) |
| 1984 | 97.0 mm (3.8 in) |
| 1985 | 188.4 mm (7.4 in) |
| 1986 | 265.9 mm (10.5 in) |
| 1987 | 141.5 mm (5.6 in) |
| 1988 | 116.1 mm (4.6 in) |
| 1989 | 88.4 mm (3.5 in) |
| 1990 | 146.0 mm (5.7 in) |
| 1991 | 127.4 mm (5.0 in) |
| 1992 | 131.3 mm (5.2 in) |
| 1993 | 121.1 mm (4.8 in) |
| 1994 | 79.8 mm (3.1 in) |
| 1995 | 112.3 mm (4.4 in) |
| 1996 | 90.7 mm (3.6 in) |
| 1997 | 85.3 mm (3.4 in) |
| 1998 | 38.9 mm (1.5 in) |
| 1999 | 134.1 mm (5.3 in) |
| 2000 | 102.4 mm (4.0 in) |
| 2001 | 135.8 mm (5.3 in) |
| 2002 | 76.7 mm (3.0 in) |
| 2003 | 122.7 mm (4.8 in) |
| 2004 | 122.0 mm (4.8 in) |
| 2005 | 167.1 mm (6.6 in) |
| 2006 | 180.6 mm (7.1 in) |
| 2007 | 132.9 mm (5.2 in) |
| 2008 | 99.1 mm (3.9 in) |
| 2009 | 169.0 mm (6.7 in) |
| 2010 | 107.6 mm (4.2 in) |
| 2011 | 82.6 mm (3.3 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1891 | 9 days |
| 1892 | 31 days |
| 1893 | 31 days |
| 1901 | 31 days |
| 1902 | 19 days |
| 1903 | 18 days |
| 1904 | 30 days |
| 1905 | 22 days |
| 1911 | 17 days |
| 1912 | 33 days |
| 1913 | 23 days |
| 1914 | 52 days |
| 1915 | 42 days |
| 1916 | 23 days |
| 1917 | 39 days |
| 1918 | 29 days |
| 1919 | 33 days |
| 1920 | 33 days |
| 1921 | 31 days |
| 1922 | 25 days |
| 1923 | 25 days |
| 1924 | 20 days |
| 1925 | 20 days |
| 1926 | 28 days |
| 1927 | 42 days |
| 1928 | 36 days |
| 1929 | 31 days |
| 1930 | 27 days |
| 1931 | 19 days |
| 1932 | 24 days |
| 1933 | 36 days |
| 1934 | 28 days |
| 1935 | 31 days |
| 1936 | 41 days |
| 1937 | 33 days |
| 1938 | 24 days |
| 1939 | 48 days |
| 1940 | 25 days |
| 1941 | 18 days |
| 1942 | 31 days |
| 1943 | 29 days |
| 1944 | 26 days |
| 1945 | 29 days |
| 1946 | 29 days |
| 1947 | 28 days |
| 1948 | 32 days |
| 1949 | 27 days |
| 1950 | 27 days |
| 1951 | 19 days |
| 1952 | 48 days |
| 1953 | 47 days |
| 1954 | 45 days |
| 1955 | 33 days |
| 1956 | 56 days |
| 1957 | 23 days |
| 1958 | 37 days |
| 1959 | 28 days |
| 1960 | 25 days |
| 1961 | 17 days |
| 1962 | 22 days |
| 1963 | 31 days |
| 1964 | 23 days |
| 1965 | 22 days |
| 1966 | 28 days |
| 1967 | 29 days |
| 1968 | 23 days |
| 1969 | 30 days |
| 1970 | 37 days |
| 1971 | 28 days |
| 1972 | 31 days |
| 1973 | 23 days |
| 1974 | 22 days |
| 1975 | 27 days |
| 1976 | 43 days |
| 1977 | 33 days |
| 1978 | 33 days |
| 1979 | 32 days |
| 1980 | 22 days |
| 1981 | 30 days |
| 1982 | 18 days |
| 1983 | 30 days |
| 1984 | 21 days |
| 1985 | 19 days |
| 1986 | 33 days |
| 1987 | 17 days |
| 1988 | 42 days |
| 1989 | 36 days |
| 1990 | 21 days |
| 1991 | 30 days |
| 1992 | 18 days |
| 1993 | 25 days |
| 1994 | 26 days |
| 1995 | 25 days |
| 1996 | 46 days |
| 1997 | 23 days |
| 1998 | 25 days |
| 1999 | 23 days |
| 2000 | 33 days |
| 2001 | 22 days |
| 2002 | 46 days |
| 2003 | 31 days |
| 2004 | 25 days |
| 2005 | 16 days |
| 2006 | 33 days |
| 2007 | 28 days |
| 2008 | 18 days |
| 2009 | 23 days |
| 2010 | 36 days |
| 2011 | 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
76 years with a frostAcross 76 years with a frost, the median last spring frost at Leavenworth falls on 15 April and the median first autumn frost on 21 October, which leaves a median of 189 days between them.
In 1967 to 2009 the median growing season was 189 days. The two periods have the same number of growing days.
Fitted over all years, the growing season changes by -0.4 days per decade at this station.
| Measure | Median, all years | Earliest period (1892 to 1949) | Recent period (1967 to 2009) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 15 April | 15 April | 13 April | 2 days earlier | 0.0 days per decade |
| First autumn frost | 21 October | 24 October | 15 October | 9 days earlier | -0.4 days per decade |
| Growing days | 189 days | 189 days | 189 days | no change | -0.4 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
85 years, 1892 to 2010A day with at least 72.8 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 154.8 mm (6.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 72.8 mm (2.9 in) | |
| 5 years | 93.7 mm (3.7 in) | |
| 10 years | 108.0 mm (4.3 in) | |
| 25 years | 126.5 mm (5.0 in) | |
| 50 years | 140.5 mm (5.5 in) | |
| 100 years | 154.8 mm (6.1 in) | Longer than the 85 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, 85 years of values from 1892 to 2010.
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: 177.0 mm (7.0 in) in 1977; 158.2 mm (6.2 in) in 1986; 142.0 mm (5.6 in) in 2005.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Leavenworth, at 1918. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1918 ran 0.4 C (0.7 F) lower than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1918 | -0.4 | -0.7 | 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).