Wasco Weather Records (USC00359068)
Record envelope, standing records and threshold days for Wasco (USC00359068), Oregon, United States, with 109 years of record.
Key Facts for Wasco
- Wasco (USC00359068) is a weather station in Oregon, United States at 45.60 latitude and -120.70 longitude, 386 m (1,267 ft) above sea level.
- The station reports from 1907 to 2015, 109 years of record.
- 1,464 records set at Wasco still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Wasco set a daily record precipitation of 11.4 mm (0.4 in) on 27 February 2015.
About the Station
- Location: Oregon, United States, 45.60 latitude, -120.70 longitude.
- Elevation: 386 m (1,267 ft).
- Period of record: 1907 to 2015, 109 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 | 17.2 C (63.0 F) | -28.9 C (-20.0 F) | n/a | n/a |
| Feb | 21.7 C (71.1 F) | -22.2 C (-8.0 F) | n/a | n/a |
| Mar | 26.1 C (79.0 F) | -10.0 C (14.0 F) | n/a | n/a |
| Apr | 32.8 C (91.0 F) | -7.8 C (18.0 F) | n/a | n/a |
| May | 37.8 C (100.0 F) | -3.3 C (26.1 F) | n/a | n/a |
| Jun | 40.6 C (105.1 F) | 0.0 C (32.0 F) | n/a | n/a |
| Jul | 45.0 C (113.0 F) | 0.6 C (33.1 F) | n/a | n/a |
| Aug | 40.6 C (105.1 F) | 2.8 C (37.0 F) | n/a | n/a |
| Sep | 38.3 C (100.9 F) | -3.9 C (25.0 F) | n/a | n/a |
| Oct | 30.6 C (87.1 F) | -11.7 C (10.9 F) | n/a | n/a |
| Nov | 20.0 C (68.0 F) | -14.4 C (6.1 F) | n/a | n/a |
| Dec | 18.3 C (64.9 F) | -21.7 C (-7.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1907 | 37 |
| 1908 | 1 |
| 1910 | 36 |
| 1911 | 21 |
| 1912 | 35 |
| 1913 | 20 |
| 1914 | 24 |
| 1915 | 10 |
| 1916 | 45 |
| 1917 | 38 |
| 1918 | 29 |
| 1919 | 47 |
| 1920 | 23 |
| 1921 | 28 |
| 1922 | 40 |
| 1923 | 20 |
| 1924 | 40 |
| 1925 | 29 |
| 1926 | 42 |
| 1927 | 41 |
| 1928 | 18 |
| 1929 | 36 |
| 1930 | 41 |
| 1931 | 39 |
| 1932 | 37 |
| 1933 | 37 |
| 1934 | 34 |
| 1935 | 38 |
| 1936 | 46 |
| 1937 | 36 |
| 1938 | 27 |
| 1939 | 33 |
| 1940 | 25 |
| 1941 | 28 |
| 1942 | 28 |
| 1943 | 24 |
| 1944 | 36 |
| 1945 | 28 |
| 1946 | 22 |
| 1947 | 31 |
| 1948 | 17 |
| 1949 | 40 |
| 1950 | 44 |
| 1951 | 14 |
| 1952 | 39 |
| 1953 | 31 |
| 1954 | 29 |
All-Time Record Progression
2 new records| Date | Kind | Detail |
|---|---|---|
| 1950-01-31 | Record low minimum temperature | Record low minimum temperature -28.9 C (-20.0 F) |
| 2007-12-28 | Record daily snowfall | Record daily snowfall 61.0 cm (24.0 in) |
Wettest Day of Each Month
Mar: 74.2 mm (2.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 50.8 mm (2.0 in) | 19 January 1930 |
| Feb | 33.3 mm (1.3 in) | 10 February 1961 |
| Mar | 74.2 mm (2.9 in) | 31 March 1931 |
| Apr | 40.4 mm (1.6 in) | 21 April 1988 |
| May | 28.7 mm (1.1 in) | 20 May 1925 |
| Jun | 29.5 mm (1.2 in) | 10 June 1956 |
| Jul | 28.7 mm (1.1 in) | 6 July 1923 |
| Aug | 34.5 mm (1.4 in) | 21 August 1990 |
| Sep | 38.1 mm (1.5 in) | 19 September 2010 |
| Oct | 33.3 mm (1.3 in) | 24 October 1943 |
| Nov | 56.6 mm (2.2 in) | 20 November 1921 |
| Dec | 54.6 mm (2.1 in) | 30 December 1931 |
Period of Record Coverage
1907 to 1954| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1907 | 61 | 17% | No |
| 1908 | 30 | 8% | No |
| 1909 | 14 | 4% | No |
| 1910 | 358 | 98% | Yes |
| 1911 | 185 | 51% | No |
| 1912 | 331 | 90% | Yes |
| 1913 | 359 | 98% | Yes |
| 1914 | 361 | 99% | Yes |
| 1915 | 363 | 99% | Yes |
| 1916 | 366 | 100% | Yes |
| 1917 | 359 | 98% | Yes |
| 1918 | 360 | 99% | Yes |
| 1919 | 313 | 86% | No |
| 1920 | 363 | 99% | Yes |
| 1921 | 364 | 100% | Yes |
| 1922 | 361 | 99% | Yes |
| 1923 | 364 | 100% | Yes |
| 1924 | 333 | 91% | Yes |
| 1925 | 300 | 82% | No |
| 1926 | 331 | 91% | Yes |
| 1927 | 344 | 94% | Yes |
| 1928 | 357 | 98% | Yes |
| 1929 | 357 | 98% | Yes |
| 1930 | 346 | 95% | Yes |
| 1931 | 359 | 98% | Yes |
| 1932 | 359 | 98% | Yes |
| 1933 | 350 | 96% | Yes |
| 1934 | 329 | 90% | Yes |
| 1935 | 349 | 96% | Yes |
| 1936 | 362 | 99% | Yes |
| 1937 | 348 | 95% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 364 | 100% | Yes |
| 1940 | 360 | 98% | Yes |
| 1941 | 362 | 99% | Yes |
| 1942 | 360 | 99% | Yes |
| 1943 | 363 | 99% | Yes |
| 1944 | 361 | 99% | Yes |
| 1945 | 363 | 99% | Yes |
| 1946 | 362 | 99% | Yes |
| 1947 | 362 | 99% | Yes |
| 1948 | 183 | 50% | No |
| 1949 | 363 | 99% | Yes |
| 1950 | 359 | 98% | Yes |
| 1951 | 362 | 99% | Yes |
| 1952 | 349 | 95% | Yes |
| 1953 | 342 | 94% | Yes |
| 1954 | 169 | 46% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 27 February 2015 | Wasco, US | daily rain | 11.4 mm (0.4 in) | 3.8 mm (0.15 in) | 75 years | 20 of 100 (Routine) |
| 18 January 2015 | Wasco, US | daily rain | 17.8 mm (0.7 in) | 1.3 mm (0.05 in) | 104 years | 20 of 100 (Routine) |
| 18 November 2014 | Wasco, US | daily snow depth | 7.6 cm (3.0 in) | 2.5 cm (1.0 in) | 104 years | 20 of 100 (Routine) |
| 17 November 2014 | Wasco, US | daily snow depth | 7.6 cm (3.0 in) | 7.6 cm (3.0 in) | 65 years | 20 of 100 (Routine) |
| 16 November 2014 | Wasco, US | daily snow depth | 10.2 cm (4.0 in) | 10.2 cm (4.0 in) | 65 years | 56 of 100 (Notable) |
| 15 November 2014 | Wasco, US | daily snow depth | 12.7 cm (5.0 in) | 12.7 cm (5.0 in) | 65 years | 62 of 100 (Major) |
| 14 November 2014 | Wasco, US | daily snow depth | 12.7 cm (5.0 in) | 12.7 cm (5.0 in) | 65 years | 62 of 100 (Major) |
| 14 November 2014 | Wasco, US | daily snowfall | 11.4 cm (4.5 in) | 8.9 cm (3.5 in) | 89 years | 48 of 100 (Notable) |
| 2 December 2013 | Wasco, US | daily rain | 25.4 mm (1.0 in) | 2.8 mm (0.11 in) | 32 years | 23 of 100 (Routine) |
| 6 September 2013 | Wasco, US | daily rain | 17.0 mm (0.7 in) | 6.8 mm (0.27 in) | 42 years | 20 of 100 (Routine) |
| 29 December 2012 | Wasco, US | daily snow depth | 20.3 cm (8.0 in) | 2.5 cm (1.0 in) | 61 years | 30 of 100 (Routine) |
| 25 December 2012 | Wasco, US | daily snowfall | 27.9 cm (11.0 in) | 17.7 cm (7.0 in) | 99 years | 67 of 100 (Major) |
| 15 December 2012 | Wasco, US | daily snowfall | 3.8 cm (1.5 in) | 1.3 cm (0.5 in) | 104 years | 20 of 100 (Routine) |
| 16 October 2012 | Wasco, US | daily rain (Tie) | 15.5 mm (0.6 in) | tie | 86 years | 8 of 100 (Routine) |
| 30 March 2012 | Wasco, US | daily rain | 19.1 mm (0.8 in) | 0.3 mm (0.01 in) | 29 years | 18 of 100 (Routine) |
| 21 March 2012 | Wasco, US | daily snowfall | 1.3 cm (0.5 in) | 1.3 cm (0.5 in) | 104 years | 20 of 100 (Routine) |
| 29 February 2012 | Wasco, US | daily snowfall | 1.3 cm (0.5 in) | 1.3 cm (0.5 in) | 96 years | 20 of 100 (Routine) |
| 18 January 2012 | Wasco, US | daily snowfall | 22.9 cm (9.0 in) | 12.7 cm (5.0 in) | 74 years | 51 of 100 (Notable) |
| 28 December 2011 | Wasco, US | daily rain | 31.8 mm (1.3 in) | 5.9 mm (0.23 in) | 12 years | 23 of 100 (Routine) |
| 1 March 2011 | Wasco, US | daily snow depth (Tie) | 2.5 cm (1.0 in) | tie | 48 years | 6 of 100 (Routine) |
Climate Trend
36 complete years, 1910 to 1953| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1910 | 11.3 C | +0.96 C |
| 1913 | 10.4 C | +0.09 C |
| 1914 | 10.6 C | +0.33 C |
| 1915 | 11.1 C | +0.74 C |
| 1916 | 8.8 C | -1.53 C |
| 1917 | 11.0 C | +0.70 C |
| 1918 | 10.9 C | +0.63 C |
| 1920 | 9.6 C | -0.72 C |
| 1921 | 9.8 C | -0.50 C |
| 1922 | 9.1 C | -1.25 C |
| 1923 | 9.8 C | -0.54 C |
| 1927 | 9.4 C | -0.88 C |
| 1928 | 10.0 C | -0.35 C |
| 1929 | 9.5 C | -0.82 C |
| 1930 | 9.6 C | -0.74 C |
| 1931 | 9.9 C | -0.41 C |
| 1932 | 9.9 C | -0.46 C |
| 1933 | 10.3 C | -0.02 C |
| 1934 | 11.9 C | +1.63 C |
| 1935 | 10.0 C | -0.30 C |
| 1936 | 10.4 C | +0.13 C |
| 1938 | 11.0 C | +0.69 C |
| 1939 | 11.5 C | +1.15 C |
| 1940 | 11.3 C | +0.95 C |
| 1941 | 11.2 C | +0.90 C |
| 1942 | 10.4 C | +0.04 C |
| 1943 | 9.8 C | -0.55 C |
| 1944 | 10.5 C | +0.15 C |
| 1945 | 10.5 C | +0.18 C |
| 1946 | 10.5 C | +0.16 C |
| 1947 | 11.1 C | +0.81 C |
| 1949 | 9.9 C | -0.38 C |
| 1950 | 9.3 C | -1.00 C |
| 1951 | 10.0 C | -0.31 C |
| 1952 | 9.9 C | -0.39 C |
| 1953 | 11.4 C | +1.04 C |
The fitted trend in annual mean temperature here over 1910 to 1953 is 0.1 C (-0.1 to 0.3) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.3 to 0.5) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.1 C (-0.1 to 0.3) per decade | 0.1 F (-0.3 to 0.5) per decade | 1910 to 1953 | 36 | Not clearly different from zero |
| Mean daily maximum | 0.22 C (-0.02 to 0.45) per decade | 0.39 F (-0.03 to 0.82) per decade | 1910 to 1953 | 36 | Not clearly different from zero |
| Mean daily minimum | -0.1 C (-0.3 to 0.1) per decade | -0.2 F (-0.6 to 0.2) per decade | 1910 to 1953 | 36 | 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
1907 to 2015| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 45.0 C (113.0 F) | 1939 | 38.9 C (102.0 F) | 48 |
| Coldest night (TNn) | -28.9 C (-20.0 F) | 1950 | -16.4 C (2.5 F) | 48 |
| Wettest day (Rx1day) | 74.2 mm (2.9 in) | 1931 | 23.4 mm (0.9 in) | 109 |
| Wettest five days (Rx5day) | 103.1 mm (4.1 in) | 1964 | 38.4 mm (1.5 in) | 109 |
| Longest dry spell (CDD) | 121 days | 1932 | 53 days | 109 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1907 | 32.2 C (90.0 F) |
| 1908 | 38.3 C (100.9 F) |
| 1909 | 35.0 C (95.0 F) |
| 1910 | 37.2 C (99.0 F) |
| 1911 | 35.0 C (95.0 F) |
| 1912 | 37.2 C (99.0 F) |
| 1913 | 38.3 C (100.9 F) |
| 1914 | 39.4 C (102.9 F) |
| 1915 | 38.9 C (102.0 F) |
| 1916 | 37.8 C (100.0 F) |
| 1917 | 39.4 C (102.9 F) |
| 1918 | 41.1 C (106.0 F) |
| 1919 | 41.1 C (106.0 F) |
| 1920 | 37.8 C (100.0 F) |
| 1921 | 35.6 C (96.1 F) |
| 1922 | 39.4 C (102.9 F) |
| 1923 | 36.1 C (97.0 F) |
| 1924 | 39.4 C (102.9 F) |
| 1925 | 38.9 C (102.0 F) |
| 1926 | 42.2 C (108.0 F) |
| 1927 | 38.3 C (100.9 F) |
| 1928 | 43.9 C (111.0 F) |
| 1929 | 39.4 C (102.9 F) |
| 1930 | 39.4 C (102.9 F) |
| 1931 | 37.8 C (100.0 F) |
| 1932 | 37.2 C (99.0 F) |
| 1933 | 40.6 C (105.1 F) |
| 1934 | 38.3 C (100.9 F) |
| 1935 | 43.3 C (109.9 F) |
| 1936 | 38.9 C (102.0 F) |
| 1937 | 38.3 C (100.9 F) |
| 1938 | 43.9 C (111.0 F) |
| 1939 | 45.0 C (113.0 F) |
| 1940 | 40.0 C (104.0 F) |
| 1941 | 43.9 C (111.0 F) |
| 1942 | 42.8 C (109.0 F) |
| 1943 | 37.8 C (100.0 F) |
| 1944 | 39.4 C (102.9 F) |
| 1945 | 40.0 C (104.0 F) |
| 1946 | 41.7 C (107.1 F) |
| 1947 | 37.8 C (100.0 F) |
| 1948 | 37.8 C (100.0 F) |
| 1949 | 38.9 C (102.0 F) |
| 1950 | 37.8 C (100.0 F) |
| 1951 | 36.7 C (98.1 F) |
| 1952 | 38.9 C (102.0 F) |
| 1953 | 38.9 C (102.0 F) |
| 1954 | 29.4 C (84.9 F) |
| 1955 | n/a |
| 1956 | n/a |
| 1957 | n/a |
| 1958 | n/a |
| 1959 | n/a |
| 1960 | n/a |
| 1961 | n/a |
| 1962 | n/a |
| 1963 | n/a |
| 1964 | n/a |
| 1965 | n/a |
| 1966 | n/a |
| 1967 | n/a |
| 1968 | n/a |
| 1969 | n/a |
| 1970 | n/a |
| 1971 | n/a |
| 1972 | n/a |
| 1973 | n/a |
| 1974 | n/a |
| 1975 | n/a |
| 1976 | n/a |
| 1977 | n/a |
| 1978 | n/a |
| 1979 | n/a |
| 1980 | n/a |
| 1981 | n/a |
| 1982 | n/a |
| 1983 | n/a |
| 1984 | n/a |
| 1985 | n/a |
| 1986 | n/a |
| 1987 | n/a |
| 1988 | n/a |
| 1989 | n/a |
| 1990 | n/a |
| 1991 | n/a |
| 1992 | n/a |
| 1993 | n/a |
| 1994 | n/a |
| 1995 | n/a |
| 1996 | n/a |
| 1997 | n/a |
| 1998 | n/a |
| 1999 | n/a |
| 2000 | n/a |
| 2001 | n/a |
| 2002 | n/a |
| 2003 | n/a |
| 2004 | n/a |
| 2005 | n/a |
| 2006 | n/a |
| 2007 | n/a |
| 2008 | n/a |
| 2009 | n/a |
| 2010 | n/a |
| 2011 | n/a |
| 2012 | n/a |
| 2013 | n/a |
| 2014 | n/a |
| 2015 | n/a |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1907 | -1.1 C (30.0 F) |
| 1908 | -10.6 C (12.9 F) |
| 1909 | -7.8 C (18.0 F) |
| 1910 | -15.0 C (5.0 F) |
| 1911 | -13.3 C (8.1 F) |
| 1912 | -17.8 C (0.0 F) |
| 1913 | -12.2 C (10.0 F) |
| 1914 | -16.7 C (1.9 F) |
| 1915 | -13.3 C (8.1 F) |
| 1916 | -22.8 C (-9.0 F) |
| 1917 | -14.4 C (6.1 F) |
| 1918 | -13.9 C (7.0 F) |
| 1919 | -21.1 C (-6.0 F) |
| 1920 | -10.0 C (14.0 F) |
| 1921 | -17.8 C (0.0 F) |
| 1922 | -24.4 C (-11.9 F) |
| 1923 | -21.7 C (-7.1 F) |
| 1924 | -21.7 C (-7.1 F) |
| 1925 | -6.1 C (21.0 F) |
| 1926 | -11.7 C (10.9 F) |
| 1927 | -26.7 C (-16.1 F) |
| 1928 | -15.6 C (3.9 F) |
| 1929 | -22.2 C (-8.0 F) |
| 1930 | -26.7 C (-16.1 F) |
| 1931 | -16.1 C (3.0 F) |
| 1932 | -21.1 C (-6.0 F) |
| 1933 | -19.4 C (-2.9 F) |
| 1934 | -3.9 C (25.0 F) |
| 1935 | -23.3 C (-9.9 F) |
| 1936 | -20.6 C (-5.1 F) |
| 1937 | -24.4 C (-11.9 F) |
| 1938 | -10.0 C (14.0 F) |
| 1939 | -16.1 C (3.0 F) |
| 1940 | -11.1 C (12.0 F) |
| 1941 | -12.2 C (10.0 F) |
| 1942 | -20.0 C (-4.0 F) |
| 1943 | -23.3 C (-9.9 F) |
| 1944 | -10.6 C (12.9 F) |
| 1945 | -10.6 C (12.9 F) |
| 1946 | -11.1 C (12.0 F) |
| 1947 | -19.4 C (-2.9 F) |
| 1948 | -14.4 C (6.1 F) |
| 1949 | -21.1 C (-6.0 F) |
| 1950 | -28.9 C (-20.0 F) |
| 1951 | -16.7 C (1.9 F) |
| 1952 | -17.2 C (1.0 F) |
| 1953 | -6.7 C (19.9 F) |
| 1954 | -21.7 C (-7.1 F) |
| 1955 | n/a |
| 1956 | n/a |
| 1957 | n/a |
| 1958 | n/a |
| 1959 | n/a |
| 1960 | n/a |
| 1961 | n/a |
| 1962 | n/a |
| 1963 | n/a |
| 1964 | n/a |
| 1965 | n/a |
| 1966 | n/a |
| 1967 | n/a |
| 1968 | n/a |
| 1969 | n/a |
| 1970 | n/a |
| 1971 | n/a |
| 1972 | n/a |
| 1973 | n/a |
| 1974 | n/a |
| 1975 | n/a |
| 1976 | n/a |
| 1977 | n/a |
| 1978 | n/a |
| 1979 | n/a |
| 1980 | n/a |
| 1981 | n/a |
| 1982 | n/a |
| 1983 | n/a |
| 1984 | n/a |
| 1985 | n/a |
| 1986 | n/a |
| 1987 | n/a |
| 1988 | n/a |
| 1989 | n/a |
| 1990 | n/a |
| 1991 | n/a |
| 1992 | n/a |
| 1993 | n/a |
| 1994 | n/a |
| 1995 | n/a |
| 1996 | n/a |
| 1997 | n/a |
| 1998 | n/a |
| 1999 | n/a |
| 2000 | n/a |
| 2001 | n/a |
| 2002 | n/a |
| 2003 | n/a |
| 2004 | n/a |
| 2005 | n/a |
| 2006 | n/a |
| 2007 | n/a |
| 2008 | n/a |
| 2009 | n/a |
| 2010 | n/a |
| 2011 | n/a |
| 2012 | n/a |
| 2013 | n/a |
| 2014 | n/a |
| 2015 | n/a |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1907 | 15.2 mm (0.6 in) |
| 1908 | 28.4 mm (1.1 in) |
| 1909 | 27.4 mm (1.1 in) |
| 1910 | 15.2 mm (0.6 in) |
| 1911 | 31.5 mm (1.2 in) |
| 1912 | 34.3 mm (1.4 in) |
| 1913 | 18.8 mm (0.7 in) |
| 1914 | 29.5 mm (1.2 in) |
| 1915 | 24.1 mm (0.9 in) |
| 1916 | 23.4 mm (0.9 in) |
| 1917 | 31.8 mm (1.3 in) |
| 1918 | 23.4 mm (0.9 in) |
| 1919 | 21.6 mm (0.9 in) |
| 1920 | 15.7 mm (0.6 in) |
| 1921 | 56.6 mm (2.2 in) |
| 1922 | 16.3 mm (0.6 in) |
| 1923 | 28.7 mm (1.1 in) |
| 1924 | 23.1 mm (0.9 in) |
| 1925 | 28.7 mm (1.1 in) |
| 1926 | 31.0 mm (1.2 in) |
| 1927 | 22.9 mm (0.9 in) |
| 1928 | 31.0 mm (1.2 in) |
| 1929 | 43.9 mm (1.7 in) |
| 1930 | 50.8 mm (2.0 in) |
| 1931 | 74.2 mm (2.9 in) |
| 1932 | 30.5 mm (1.2 in) |
| 1933 | 26.9 mm (1.1 in) |
| 1934 | 14.0 mm (0.6 in) |
| 1935 | 18.8 mm (0.7 in) |
| 1936 | 22.9 mm (0.9 in) |
| 1937 | 18.0 mm (0.7 in) |
| 1938 | 17.3 mm (0.7 in) |
| 1939 | 8.4 mm (0.33 in) |
| 1940 | 22.1 mm (0.9 in) |
| 1941 | 25.9 mm (1.0 in) |
| 1942 | 22.9 mm (0.9 in) |
| 1943 | 33.3 mm (1.3 in) |
| 1944 | 20.3 mm (0.8 in) |
| 1945 | 24.9 mm (1.0 in) |
| 1946 | 13.5 mm (0.5 in) |
| 1947 | 35.1 mm (1.4 in) |
| 1948 | 16.5 mm (0.6 in) |
| 1949 | 16.0 mm (0.6 in) |
| 1950 | 24.9 mm (1.0 in) |
| 1951 | 19.1 mm (0.8 in) |
| 1952 | 23.1 mm (0.9 in) |
| 1953 | 43.2 mm (1.7 in) |
| 1954 | 14.0 mm (0.6 in) |
| 1955 | 23.6 mm (0.9 in) |
| 1956 | 32.3 mm (1.3 in) |
| 1957 | 15.0 mm (0.6 in) |
| 1958 | 20.6 mm (0.8 in) |
| 1959 | 26.7 mm (1.1 in) |
| 1960 | 21.8 mm (0.9 in) |
| 1961 | 33.3 mm (1.3 in) |
| 1962 | 14.7 mm (0.6 in) |
| 1963 | 20.6 mm (0.8 in) |
| 1964 | 40.6 mm (1.6 in) |
| 1965 | 16.8 mm (0.7 in) |
| 1966 | 25.4 mm (1.0 in) |
| 1967 | 14.7 mm (0.6 in) |
| 1968 | 16.3 mm (0.6 in) |
| 1969 | 25.1 mm (1.0 in) |
| 1970 | 20.8 mm (0.8 in) |
| 1971 | 18.8 mm (0.7 in) |
| 1972 | 43.7 mm (1.7 in) |
| 1973 | 17.5 mm (0.7 in) |
| 1974 | 21.6 mm (0.9 in) |
| 1975 | 29.2 mm (1.1 in) |
| 1976 | 12.7 mm (0.5 in) |
| 1977 | 29.2 mm (1.1 in) |
| 1978 | 21.8 mm (0.9 in) |
| 1979 | 17.5 mm (0.7 in) |
| 1980 | 27.9 mm (1.1 in) |
| 1981 | 35.1 mm (1.4 in) |
| 1982 | 30.7 mm (1.2 in) |
| 1983 | 18.8 mm (0.7 in) |
| 1984 | 21.8 mm (0.9 in) |
| 1985 | 19.8 mm (0.8 in) |
| 1986 | 23.9 mm (0.9 in) |
| 1987 | 24.9 mm (1.0 in) |
| 1988 | 40.4 mm (1.6 in) |
| 1989 | 22.9 mm (0.9 in) |
| 1990 | 34.5 mm (1.4 in) |
| 1991 | 23.6 mm (0.9 in) |
| 1992 | 19.1 mm (0.8 in) |
| 1993 | 25.4 mm (1.0 in) |
| 1994 | 34.8 mm (1.4 in) |
| 1995 | 30.2 mm (1.2 in) |
| 1996 | 30.5 mm (1.2 in) |
| 1997 | 21.8 mm (0.9 in) |
| 1998 | 25.9 mm (1.0 in) |
| 1999 | 13.2 mm (0.5 in) |
| 2000 | 29.2 mm (1.1 in) |
| 2001 | 20.3 mm (0.8 in) |
| 2002 | 15.0 mm (0.6 in) |
| 2003 | 33.0 mm (1.3 in) |
| 2004 | 20.3 mm (0.8 in) |
| 2005 | 29.2 mm (1.1 in) |
| 2006 | 24.4 mm (1.0 in) |
| 2007 | 21.6 mm (0.9 in) |
| 2008 | 10.4 mm (0.4 in) |
| 2009 | 17.3 mm (0.7 in) |
| 2010 | 38.1 mm (1.5 in) |
| 2011 | 31.8 mm (1.3 in) |
| 2012 | 20.8 mm (0.8 in) |
| 2013 | 25.4 mm (1.0 in) |
| 2014 | 14.7 mm (0.6 in) |
| 2015 | 17.8 mm (0.7 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1907 | 46.0 mm (1.8 in) |
| 1908 | 31.3 mm (1.2 in) |
| 1909 | 61.1 mm (2.4 in) |
| 1910 | 31.7 mm (1.2 in) |
| 1911 | 54.6 mm (2.1 in) |
| 1912 | 65.0 mm (2.6 in) |
| 1913 | 30.2 mm (1.2 in) |
| 1914 | 39.4 mm (1.6 in) |
| 1915 | 48.0 mm (1.9 in) |
| 1916 | 36.1 mm (1.4 in) |
| 1917 | 47.0 mm (1.9 in) |
| 1918 | 34.6 mm (1.4 in) |
| 1919 | 42.5 mm (1.7 in) |
| 1920 | 38.1 mm (1.5 in) |
| 1921 | 97.8 mm (3.9 in) |
| 1922 | 30.1 mm (1.2 in) |
| 1923 | 41.6 mm (1.6 in) |
| 1924 | 40.2 mm (1.6 in) |
| 1925 | 26.3 mm (1.0 in) |
| 1926 | 60.0 mm (2.4 in) |
| 1927 | 49.9 mm (2.0 in) |
| 1928 | 49.3 mm (1.9 in) |
| 1929 | 55.8 mm (2.2 in) |
| 1930 | 63.5 mm (2.5 in) |
| 1931 | 87.0 mm (3.4 in) |
| 1932 | 54.6 mm (2.1 in) |
| 1933 | 37.5 mm (1.5 in) |
| 1934 | 31.5 mm (1.2 in) |
| 1935 | 32.6 mm (1.3 in) |
| 1936 | 62.1 mm (2.4 in) |
| 1937 | 33.7 mm (1.3 in) |
| 1938 | 32.5 mm (1.3 in) |
| 1939 | 18.0 mm (0.7 in) |
| 1940 | 42.7 mm (1.7 in) |
| 1941 | 43.8 mm (1.7 in) |
| 1942 | 38.9 mm (1.5 in) |
| 1943 | 56.9 mm (2.2 in) |
| 1944 | 28.7 mm (1.1 in) |
| 1945 | 55.2 mm (2.2 in) |
| 1946 | 35.1 mm (1.4 in) |
| 1947 | 39.4 mm (1.6 in) |
| 1948 | 30.2 mm (1.2 in) |
| 1949 | 27.3 mm (1.1 in) |
| 1950 | 44.0 mm (1.7 in) |
| 1951 | 31.8 mm (1.3 in) |
| 1952 | 29.1 mm (1.1 in) |
| 1953 | 60.9 mm (2.4 in) |
| 1954 | 24.7 mm (1.0 in) |
| 1955 | 32.3 mm (1.3 in) |
| 1956 | 50.8 mm (2.0 in) |
| 1957 | 30.2 mm (1.2 in) |
| 1958 | 44.7 mm (1.8 in) |
| 1959 | 39.2 mm (1.5 in) |
| 1960 | 53.8 mm (2.1 in) |
| 1961 | 69.3 mm (2.7 in) |
| 1962 | 36.2 mm (1.4 in) |
| 1963 | 38.4 mm (1.5 in) |
| 1964 | 103.1 mm (4.1 in) |
| 1965 | 26.0 mm (1.0 in) |
| 1966 | 55.1 mm (2.2 in) |
| 1967 | 23.6 mm (0.9 in) |
| 1968 | 35.0 mm (1.4 in) |
| 1969 | 36.8 mm (1.4 in) |
| 1970 | 46.5 mm (1.8 in) |
| 1971 | 46.5 mm (1.8 in) |
| 1972 | 49.5 mm (1.9 in) |
| 1973 | 36.8 mm (1.4 in) |
| 1974 | 23.3 mm (0.9 in) |
| 1975 | 47.5 mm (1.9 in) |
| 1976 | 17.3 mm (0.7 in) |
| 1977 | 70.4 mm (2.8 in) |
| 1978 | 33.7 mm (1.3 in) |
| 1979 | 39.1 mm (1.5 in) |
| 1980 | 49.2 mm (1.9 in) |
| 1981 | 44.7 mm (1.8 in) |
| 1982 | 34.2 mm (1.3 in) |
| 1983 | 31.0 mm (1.2 in) |
| 1984 | 33.4 mm (1.3 in) |
| 1985 | 31.3 mm (1.2 in) |
| 1986 | 29.0 mm (1.1 in) |
| 1987 | 45.2 mm (1.8 in) |
| 1988 | 47.3 mm (1.9 in) |
| 1989 | 29.2 mm (1.1 in) |
| 1990 | 41.6 mm (1.6 in) |
| 1991 | 32.4 mm (1.3 in) |
| 1992 | 32.3 mm (1.3 in) |
| 1993 | 17.5 mm (0.7 in) |
| 1994 | 68.3 mm (2.7 in) |
| 1995 | 59.7 mm (2.4 in) |
| 1996 | 45.0 mm (1.8 in) |
| 1997 | 31.8 mm (1.3 in) |
| 1998 | 41.4 mm (1.6 in) |
| 1999 | 31.0 mm (1.2 in) |
| 2000 | 29.2 mm (1.1 in) |
| 2001 | 30.4 mm (1.2 in) |
| 2002 | 34.9 mm (1.4 in) |
| 2003 | 33.8 mm (1.3 in) |
| 2004 | 42.9 mm (1.7 in) |
| 2005 | 82.7 mm (3.3 in) |
| 2006 | 79.9 mm (3.1 in) |
| 2007 | 39.9 mm (1.6 in) |
| 2008 | 14.0 mm (0.6 in) |
| 2009 | 27.4 mm (1.1 in) |
| 2010 | 48.3 mm (1.9 in) |
| 2011 | 23.7 mm (0.9 in) |
| 2012 | 20.3 mm (0.8 in) |
| 2013 | 17.8 mm (0.7 in) |
| 2014 | 35.8 mm (1.4 in) |
| 2015 | 19.6 mm (0.8 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1907 | 42 days |
| 1908 | 38 days |
| 1909 | 37 days |
| 1910 | 63 days |
| 1911 | 34 days |
| 1912 | 44 days |
| 1913 | 38 days |
| 1914 | 56 days |
| 1915 | 39 days |
| 1916 | 28 days |
| 1917 | 69 days |
| 1918 | 34 days |
| 1919 | 50 days |
| 1920 | 41 days |
| 1921 | 49 days |
| 1922 | 62 days |
| 1923 | 32 days |
| 1924 | 82 days |
| 1925 | 90 days |
| 1926 | 58 days |
| 1927 | 58 days |
| 1928 | 93 days |
| 1929 | 98 days |
| 1930 | 35 days |
| 1931 | 70 days |
| 1932 | 121 days |
| 1933 | 58 days |
| 1934 | 55 days |
| 1935 | 39 days |
| 1936 | 77 days |
| 1937 | 32 days |
| 1938 | 56 days |
| 1939 | 57 days |
| 1940 | 48 days |
| 1941 | 28 days |
| 1942 | 45 days |
| 1943 | 64 days |
| 1944 | 73 days |
| 1945 | 89 days |
| 1946 | 52 days |
| 1947 | 40 days |
| 1948 | 28 days |
| 1949 | 81 days |
| 1950 | 95 days |
| 1951 | 61 days |
| 1952 | 68 days |
| 1953 | 53 days |
| 1954 | 23 days |
| 1955 | 43 days |
| 1956 | 44 days |
| 1957 | 56 days |
| 1958 | 67 days |
| 1959 | 74 days |
| 1960 | 49 days |
| 1961 | 51 days |
| 1962 | 69 days |
| 1963 | 33 days |
| 1964 | 39 days |
| 1965 | 32 days |
| 1966 | 58 days |
| 1967 | 80 days |
| 1968 | 39 days |
| 1969 | 86 days |
| 1970 | 68 days |
| 1971 | 51 days |
| 1972 | 35 days |
| 1973 | 80 days |
| 1974 | 102 days |
| 1975 | 39 days |
| 1976 | 49 days |
| 1977 | 45 days |
| 1978 | 53 days |
| 1979 | 82 days |
| 1980 | 57 days |
| 1981 | 74 days |
| 1982 | 56 days |
| 1983 | 32 days |
| 1984 | 35 days |
| 1985 | 52 days |
| 1986 | 42 days |
| 1987 | 79 days |
| 1988 | 66 days |
| 1989 | 50 days |
| 1990 | 45 days |
| 1991 | 55 days |
| 1992 | 62 days |
| 1993 | 87 days |
| 1994 | 120 days |
| 1995 | 31 days |
| 1996 | 46 days |
| 1997 | 46 days |
| 1998 | 32 days |
| 1999 | 56 days |
| 2000 | 10 days |
| 2001 | 33 days |
| 2002 | 67 days |
| 2003 | 66 days |
| 2004 | 38 days |
| 2005 | 69 days |
| 2006 | 89 days |
| 2007 | 75 days |
| 2008 | 63 days |
| 2009 | 60 days |
| 2010 | 80 days |
| 2011 | 2 days |
| 2012 | 12 days |
| 2013 | 25 days |
| 2014 | 21 days |
| 2015 | 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
36 years with a frostAcross 36 years with a frost, the median last spring frost at Wasco falls on 4 May and the median first autumn frost on 16 October, which leaves a median of 165 days between them.
Fitted over all years, the growing season changes by -4.8 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1918 to 1953) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 4 May | n/a | 5 May | n/a | +1.4 days per decade |
| First autumn frost | 16 October | n/a | 14 October | n/a | -3.4 days per decade |
| Growing days | 165 days | n/a | 164 days | n/a | -4.8 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
91 years, 1908 to 2010A day with at least 23.8 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 53.0 mm (2.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 23.8 mm (0.9 in) | |
| 5 years | 31.5 mm (1.2 in) | |
| 10 years | 36.6 mm (1.4 in) | |
| 25 years | 43.2 mm (1.7 in) | |
| 50 years | 48.1 mm (1.9 in) | |
| 100 years | 53.0 mm (2.1 in) | Longer than the 91 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, 91 years of values from 1908 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: 56.6 mm (2.2 in) in 1921; 50.8 mm (2.0 in) in 1930; 43.9 mm (1.7 in) in 1929.
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).