San Luis Obispo Poly Weather Records (USC00047851)
Record envelope, standing records and threshold days for San Luis Obispo Poly (USC00047851), California, United States, with 134 years of record.
Key Facts for San Luis Obispo Poly
- San Luis Obispo Poly (USC00047851) is a weather station in California, United States at 35.31 latitude and -120.66 longitude, 94 m (308 ft) above sea level.
- The station reports from 1893 to 2026, 134 years of record.
- 1,464 records set at San Luis Obispo Poly still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- San Luis Obispo Poly tied a daily record high minimum temperature of 17.8 C (64.0 F) on 27 August 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: California, United States, 35.31 latitude, -120.66 longitude.
- Elevation: 94 m (308 ft).
- Period of record: 1893 to 2026, 134 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
8 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 32.2 C (90.0 F) | -4.4 C (24.1 F) | 28.9 C (84.0 F) | 2.2 C (36.0 F) |
| Feb | 31.7 C (89.1 F) | -6.1 C (21.0 F) | 28.9 C (84.0 F) | 1.7 C (35.1 F) |
| Mar | 36.7 C (98.1 F) | -2.2 C (28.0 F) | 36.7 C (98.1 F) | 7.2 C (45.0 F) |
| Apr | 40.0 C (104.0 F) | -1.7 C (28.9 F) | 30.0 C (86.0 F) | 6.1 C (43.0 F) |
| May | 38.9 C (102.0 F) | 0.0 C (32.0 F) | 30.6 C (87.1 F) | 6.7 C (44.1 F) |
| Jun | 42.2 C (108.0 F) | 1.7 C (35.1 F) | 33.3 C (91.9 F) | 7.2 C (45.0 F) |
| Jul | 43.9 C (111.0 F) | 2.2 C (36.0 F) | 32.8 C (91.0 F) | 10.0 C (50.0 F) |
| Aug | 41.7 C (107.1 F) | 4.4 C (39.9 F) | 36.1 C (97.0 F) | 10.6 C (51.1 F) |
| Sep | 45.0 C (113.0 F) | 1.7 C (35.1 F) | 30.6 C (87.1 F) | 8.9 C (48.0 F) |
| Oct | 42.8 C (109.0 F) | -1.1 C (30.0 F) | n/a | n/a |
| Nov | 36.7 C (98.1 F) | -5.0 C (23.0 F) | n/a | n/a |
| Dec | 33.3 C (91.9 F) | -8.3 C (17.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1928 | 12 |
| 1929 | 29 |
| 1930 | 27 |
| 1931 | 21 |
| 1932 | 34 |
| 1933 | 38 |
| 1934 | 14 |
| 1935 | 23 |
| 1936 | 8 |
| 1937 | 18 |
| 1938 | 12 |
| 1939 | 21 |
| 1940 | 12 |
| 1941 | 9 |
| 1942 | 16 |
| 1943 | 7 |
| 1944 | 10 |
| 1945 | 11 |
| 1946 | 14 |
| 1947 | 9 |
| 1948 | 19 |
| 1949 | 38 |
| 1950 | 15 |
| 1951 | 13 |
| 1952 | 12 |
| 1953 | 13 |
| 1954 | 11 |
| 1955 | 26 |
| 1956 | 12 |
| 1957 | 10 |
| 1958 | 11 |
| 1959 | 13 |
| 1960 | 8 |
| 1961 | 13 |
| 1962 | 26 |
| 1963 | 14 |
| 1964 | 19 |
| 1965 | 9 |
| 1966 | 15 |
| 1967 | 18 |
| 1968 | 11 |
| 1969 | 8 |
| 1970 | 20 |
| 1971 | 28 |
| 1972 | 10 |
| 1973 | 12 |
| 1974 | 13 |
| 1975 | 16 |
| 1976 | 21 |
| 1977 | 13 |
| 1978 | 13 |
| 1979 | 13 |
| 1980 | 20 |
| 1981 | 15 |
| 1982 | 12 |
| 1983 | 8 |
| 1984 | 24 |
| 1985 | 14 |
| 1986 | 11 |
| 1987 | 22 |
| 1988 | 14 |
| 1989 | 16 |
| 1990 | 16 |
| 1991 | 13 |
| 1992 | 6 |
| 1993 | 7 |
| 1994 | 9 |
| 1995 | 6 |
| 1996 | 18 |
| 1997 | 16 |
| 1998 | 7 |
| 1999 | 9 |
| 2000 | 12 |
| 2001 | 15 |
| 2002 | 12 |
| 2003 | 18 |
| 2004 | 19 |
| 2005 | 3 |
| 2006 | 6 |
| 2007 | 9 |
| 2008 | 9 |
| 2009 | 20 |
| 2010 | 20 |
| 2011 | 13 |
| 2012 | 7 |
| 2013 | 8 |
| 2014 | 8 |
| 2015 | 24 |
| 2016 | 10 |
| 2017 | 22 |
| 2018 | 19 |
| 2019 | 5 |
| 2020 | 24 |
| 2021 | 14 |
| 2022 | 19 |
| 2023 | 10 |
| 2024 | 5 |
| 2025 | 8 |
| 2026 | 24 |
All-Time Record Progression
7 new records| Date | Kind | Detail |
|---|---|---|
| 1969-01-19 | Record daily precipitation | Record daily precipitation 125.2 mm (4.9 in) |
| 1969-01-20 | Record daily precipitation | Record daily precipitation 142.2 mm (5.6 in) |
| 1969-01-25 | Record daily precipitation | Record daily precipitation 149.9 mm (5.9 in) |
| 1971-09-14 | Record high maximum temperature | Record high maximum temperature 44.4 C (111.9 F) |
| 1990-12-23 | Record low minimum temperature | Record low minimum temperature -8.3 C (17.1 F) |
| 2020-09-06 | Record high maximum temperature | Record high maximum temperature 45.0 C (113.0 F) |
| 2023-01-09 | Record daily precipitation | Record daily precipitation 153.7 mm (6.1 in) |
Wettest Day of Each Month
Jan: 153.7 mm (6.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 153.7 mm (6.1 in) | 9 January 2023 |
| Feb | 120.4 mm (4.7 in) | 13 February 1986 |
| Mar | 120.7 mm (4.8 in) | 7 March 1911 |
| Apr | 79.2 mm (3.1 in) | 11 April 1982 |
| May | 59.7 mm (2.4 in) | 25 May 1931 |
| Jun | 43.2 mm (1.7 in) | 5 June 1933 |
| Jul | 34.8 mm (1.4 in) | 19 July 2015 |
| Aug | 38.1 mm (1.5 in) | 30 August 1916 |
| Sep | 50.8 mm (2.0 in) | 29 September 1994 |
| Oct | 56.1 mm (2.2 in) | 1 October 1983 |
| Nov | 90.9 mm (3.6 in) | 20 November 1946 |
| Dec | 114.3 mm (4.5 in) | 8 December 1909 |
Period of Record Coverage
1927 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1927 | 89 | 24% | No |
| 1928 | 360 | 98% | Yes |
| 1929 | 363 | 99% | Yes |
| 1930 | 363 | 99% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 364 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 364 | 100% | Yes |
| 1940 | 365 | 100% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 340 | 93% | Yes |
| 1943 | 364 | 100% | Yes |
| 1944 | 365 | 100% | Yes |
| 1945 | 364 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 365 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 363 | 99% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 364 | 100% | Yes |
| 1956 | 365 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 360 | 99% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 352 | 96% | Yes |
| 1962 | 357 | 98% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 364 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 333 | 91% | Yes |
| 1979 | 364 | 100% | Yes |
| 1980 | 361 | 99% | Yes |
| 1981 | 362 | 99% | Yes |
| 1982 | 360 | 99% | Yes |
| 1983 | 360 | 99% | Yes |
| 1984 | 351 | 96% | Yes |
| 1985 | 326 | 89% | No |
| 1986 | 327 | 90% | No |
| 1987 | 354 | 97% | Yes |
| 1988 | 328 | 90% | No |
| 1989 | 331 | 91% | Yes |
| 1990 | 331 | 91% | Yes |
| 1991 | 358 | 98% | Yes |
| 1992 | 363 | 99% | Yes |
| 1993 | 364 | 100% | Yes |
| 1994 | 363 | 99% | Yes |
| 1995 | 362 | 99% | Yes |
| 1996 | 363 | 99% | Yes |
| 1997 | 337 | 92% | Yes |
| 1998 | 362 | 99% | Yes |
| 1999 | 358 | 98% | Yes |
| 2000 | 362 | 99% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 360 | 99% | Yes |
| 2003 | 354 | 97% | Yes |
| 2004 | 363 | 99% | Yes |
| 2005 | 142 | 39% | No |
| 2006 | 84 | 23% | No |
| 2007 | 303 | 83% | No |
| 2008 | 273 | 75% | No |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 356 | 98% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 364 | 100% | Yes |
| 2014 | 362 | 99% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 252 | 69% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 27 August 2026 | San Luis Obispo Poly, US | daily high min (Tie, Provisional) | 17.8 C (64.0 F) | tie | 91 years | 9 of 100 (Routine) |
| 26 August 2026 | San Luis Obispo Poly, US | daily high max (Provisional) | 36.1 C (97.0 F) | 0.5 C (0.9 F) | 95 years | 39 of 100 (Notable) |
| 26 August 2026 | San Luis Obispo Poly, US | daily high min (Provisional) | 16.7 C (62.1 F) | 1.1 C (2.0 F) | 3 years | 16 of 100 (Routine) |
| 12 August 2026 | San Luis Obispo Poly, US | daily high min | 16.1 C (61.0 F) | 0.5 C (0.9 F) | 95 years | 40 of 100 (Notable) |
| 10 August 2026 | San Luis Obispo Poly, US | daily high min | 15.6 C (60.1 F) | 1.2 C (2.2 F) | 84 years | 41 of 100 (Notable) |
| 22 July 2026 | San Luis Obispo Poly, US | daily high min | 16.7 C (62.1 F) | 0.6 C (1.1 F) | 11 years | 16 of 100 (Routine) |
| 15 July 2026 | San Luis Obispo Poly, US | daily high min (Tie) | 15.6 C (60.1 F) | tie | 41 years | 5 of 100 (Routine) |
| 14 July 2026 | San Luis Obispo Poly, US | daily high min | 16.1 C (61.0 F) | 0.5 C (0.9 F) | 47 years | 26 of 100 (Routine) |
| 27 March 2026 | San Luis Obispo Poly, US | daily high min | 15.0 C (59.0 F) | 1.7 C (3.1 F) | 97 years | 44 of 100 (Notable) |
| 24 March 2026 | San Luis Obispo Poly, US | daily high max | 31.7 C (89.1 F) | 3.9 C (7.0 F) | 96 years | 47 of 100 (Notable) |
| 23 March 2026 | San Luis Obispo Poly, US | daily high max | 33.3 C (91.9 F) | 5.5 C (9.9 F) | 95 years | 50 of 100 (Notable) |
| 20 March 2026 | San Luis Obispo Poly, US | daily high min | 18.9 C (66.0 F) | 5.0 C (9.0 F) | 95 years | 55 of 100 (Notable) |
| 20 March 2026 | San Luis Obispo Poly, US | daily high max | 36.1 C (97.0 F) | 5.5 C (9.9 F) | 28 years | 30 of 100 (Routine) |
| 19 March 2026 | San Luis Obispo Poly, US | daily high min | 15.0 C (59.0 F) | 3.3 C (5.9 F) | 31 years | 30 of 100 (Routine) |
| 19 March 2026 | San Luis Obispo Poly, US | monthly high max | 36.7 C (98.1 F) | 1.1 C (2.0 F) | 0 years | 22 of 100 (Routine) |
| 18 March 2026 | San Luis Obispo Poly, US | daily high max | 33.9 C (93.0 F) | 1.1 C (2.0 F) | 21 years | 18 of 100 (Routine) |
| 18 March 2026 | San Luis Obispo Poly, US | daily high min | 13.9 C (57.0 F) | 0.6 C (1.1 F) | 16 years | 17 of 100 (Routine) |
| 17 March 2026 | San Luis Obispo Poly, US | daily high min | 18.9 C (66.0 F) | 3.9 C (7.0 F) | 21 years | 29 of 100 (Routine) |
| 17 March 2026 | San Luis Obispo Poly, US | monthly high max | 35.6 C (96.1 F) | 2.3 C (4.1 F) | 11 years | 28 of 100 (Routine) |
| 16 March 2026 | San Luis Obispo Poly, US | daily high min | 16.1 C (61.0 F) | 1.1 C (2.0 F) | 9 years | 15 of 100 (Routine) |
Climate Trend
86 complete years, 1928 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1928 | 15.6 C | +0.28 C |
| 1929 | 15.2 C | -0.17 C |
| 1930 | 15.0 C | -0.40 C |
| 1931 | 15.9 C | +0.56 C |
| 1932 | 14.9 C | -0.47 C |
| 1933 | 14.1 C | -1.25 C |
| 1934 | 15.9 C | +0.50 C |
| 1935 | 14.3 C | -1.05 C |
| 1936 | 15.5 C | +0.15 C |
| 1937 | 14.8 C | -0.60 C |
| 1938 | 14.9 C | -0.44 C |
| 1939 | 15.1 C | -0.26 C |
| 1940 | 15.7 C | +0.34 C |
| 1941 | 15.4 C | +0.01 C |
| 1943 | 15.4 C | +0.07 C |
| 1944 | 14.4 C | -0.94 C |
| 1945 | 14.8 C | -0.56 C |
| 1946 | 14.5 C | -0.88 C |
| 1947 | 15.4 C | -0.01 C |
| 1948 | 14.4 C | -0.95 C |
| 1949 | 14.5 C | -0.82 C |
| 1950 | 15.3 C | -0.09 C |
| 1951 | 14.8 C | -0.57 C |
| 1952 | 14.2 C | -1.20 C |
| 1953 | 15.1 C | -0.29 C |
| 1954 | 14.9 C | -0.49 C |
| 1955 | 14.1 C | -1.23 C |
| 1956 | 14.9 C | -0.45 C |
| 1957 | 15.2 C | -0.18 C |
| 1958 | 16.4 C | +1.08 C |
| 1959 | 16.5 C | +1.18 C |
| 1960 | 15.0 C | -0.34 C |
| 1961 | 15.5 C | +0.15 C |
| 1962 | 14.7 C | -0.71 C |
| 1963 | 14.8 C | -0.52 C |
| 1964 | 14.3 C | -1.06 C |
| 1965 | 14.5 C | -0.84 C |
| 1966 | 14.9 C | -0.51 C |
| 1967 | 15.0 C | -0.36 C |
| 1968 | 15.0 C | -0.34 C |
| 1969 | 14.8 C | -0.53 C |
| 1970 | 14.6 C | -0.81 C |
| 1971 | 13.9 C | -1.42 C |
| 1972 | 14.8 C | -0.55 C |
| 1973 | 14.6 C | -0.78 C |
| 1974 | 14.2 C | -1.16 C |
| 1975 | 14.0 C | -1.33 C |
| 1976 | 15.6 C | +0.25 C |
| 1977 | 15.6 C | +0.25 C |
| 1979 | 15.3 C | -0.08 C |
| 1980 | 15.6 C | +0.25 C |
| 1981 | 15.8 C | +0.45 C |
| 1982 | 14.7 C | -0.66 C |
| 1983 | 15.7 C | +0.35 C |
| 1984 | 15.8 C | +0.48 C |
| 1987 | 14.8 C | -0.53 C |
| 1991 | 15.1 C | -0.26 C |
| 1992 | 16.2 C | +0.88 C |
| 1993 | 15.8 C | +0.44 C |
| 1994 | 15.1 C | -0.30 C |
| 1995 | 16.4 C | +1.00 C |
| 1996 | 16.5 C | +1.13 C |
| 1998 | 15.2 C | -0.12 C |
| 1999 | 14.9 C | -0.43 C |
| 2000 | 16.1 C | +0.71 C |
| 2001 | 15.6 C | +0.28 C |
| 2002 | 15.4 C | +0.08 C |
| 2003 | 16.4 C | +1.07 C |
| 2004 | 15.7 C | +0.33 C |
| 2009 | 15.2 C | -0.13 C |
| 2010 | 14.7 C | -0.69 C |
| 2011 | 15.0 C | -0.39 C |
| 2012 | 16.0 C | +0.61 C |
| 2013 | 16.3 C | +0.97 C |
| 2014 | 17.4 C | +1.99 C |
| 2015 | 17.1 C | +1.73 C |
| 2016 | 16.4 C | +1.05 C |
| 2017 | 17.5 C | +2.14 C |
| 2018 | 16.9 C | +1.52 C |
| 2019 | 16.0 C | +0.68 C |
| 2020 | 16.9 C | +1.56 C |
| 2021 | 16.0 C | +0.67 C |
| 2022 | 16.4 C | +1.05 C |
| 2023 | 15.7 C | +0.38 C |
| 2024 | 16.1 C | +0.78 C |
| 2025 | 16.4 C | +1.00 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1928 to 2025. In Fahrenheit: 0.3 F (0.2 to 0.4) per decade. The slope is a straight line fitted to 86 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.2 C (0.1 to 0.2) per decade | 0.3 F (0.2 to 0.4) per decade | 1928 to 2025 | 86 | Rise |
| Mean daily maximum | 0.2 C (0.1 to 0.2) per decade | 0.3 F (0.2 to 0.4) per decade | 1928 to 2025 | 86 | Rise |
| Mean daily minimum | 0.1 C (0.1 to 0.2) per decade | 0.2 F (0.1 to 0.3) per decade | 1928 to 2025 | 86 | Rise |
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 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 45.0 C (113.0 F) | 2020 | 38.6 C (101.5 F) | 100 |
| Coldest night (TNn) | -8.3 C (17.1 F) | 1990 | -0.8 C (30.5 F) | 100 |
| Wettest day (Rx1day) | 153.7 mm (6.1 in) | 2023 | 59.2 mm (2.3 in) | 116 |
| Wettest five days (Rx5day) | 347.4 mm (13.7 in) | 1969 | 115.5 mm (4.5 in) | 115 |
| Longest dry spell (CDD) | 215 days | 1965 | 122 days | 113 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | n/a |
| 1894 | n/a |
| 1895 | n/a |
| 1896 | n/a |
| 1906 | n/a |
| 1907 | n/a |
| 1908 | n/a |
| 1909 | n/a |
| 1910 | n/a |
| 1911 | n/a |
| 1912 | n/a |
| 1913 | n/a |
| 1914 | n/a |
| 1915 | n/a |
| 1916 | n/a |
| 1917 | n/a |
| 1927 | 34.4 C (93.9 F) |
| 1928 | 35.0 C (95.0 F) |
| 1929 | 42.2 C (108.0 F) |
| 1930 | 41.1 C (106.0 F) |
| 1931 | 37.8 C (100.0 F) |
| 1932 | 34.4 C (93.9 F) |
| 1933 | 37.2 C (99.0 F) |
| 1934 | 36.1 C (97.0 F) |
| 1935 | 37.2 C (99.0 F) |
| 1936 | 40.0 C (104.0 F) |
| 1937 | 36.1 C (97.0 F) |
| 1938 | 35.6 C (96.1 F) |
| 1939 | 40.6 C (105.1 F) |
| 1940 | 35.6 C (96.1 F) |
| 1941 | 33.3 C (91.9 F) |
| 1942 | 36.7 C (98.1 F) |
| 1943 | 41.7 C (107.1 F) |
| 1944 | 41.7 C (107.1 F) |
| 1945 | 37.2 C (99.0 F) |
| 1946 | 36.7 C (98.1 F) |
| 1947 | 37.2 C (99.0 F) |
| 1948 | 38.3 C (100.9 F) |
| 1949 | 40.0 C (104.0 F) |
| 1950 | 39.4 C (102.9 F) |
| 1951 | 35.0 C (95.0 F) |
| 1952 | 36.7 C (98.1 F) |
| 1953 | 38.9 C (102.0 F) |
| 1954 | 36.7 C (98.1 F) |
| 1955 | 43.3 C (109.9 F) |
| 1956 | 36.1 C (97.0 F) |
| 1957 | 37.2 C (99.0 F) |
| 1958 | 37.2 C (99.0 F) |
| 1959 | 40.0 C (104.0 F) |
| 1960 | 36.7 C (98.1 F) |
| 1961 | 42.2 C (108.0 F) |
| 1962 | 40.6 C (105.1 F) |
| 1963 | 39.4 C (102.9 F) |
| 1964 | 37.2 C (99.0 F) |
| 1965 | 37.2 C (99.0 F) |
| 1966 | 36.7 C (98.1 F) |
| 1967 | 36.1 C (97.0 F) |
| 1968 | 38.9 C (102.0 F) |
| 1969 | 40.0 C (104.0 F) |
| 1970 | 37.8 C (100.0 F) |
| 1971 | 44.4 C (111.9 F) |
| 1972 | 36.1 C (97.0 F) |
| 1973 | 41.1 C (106.0 F) |
| 1974 | 36.7 C (98.1 F) |
| 1975 | 38.9 C (102.0 F) |
| 1976 | 41.1 C (106.0 F) |
| 1977 | 38.9 C (102.0 F) |
| 1978 | 40.6 C (105.1 F) |
| 1979 | 40.6 C (105.1 F) |
| 1980 | 42.8 C (109.0 F) |
| 1981 | 40.0 C (104.0 F) |
| 1982 | 37.2 C (99.0 F) |
| 1983 | 41.7 C (107.1 F) |
| 1984 | 39.4 C (102.9 F) |
| 1985 | 40.0 C (104.0 F) |
| 1986 | 34.4 C (93.9 F) |
| 1987 | 42.2 C (108.0 F) |
| 1988 | 38.9 C (102.0 F) |
| 1989 | 43.9 C (111.0 F) |
| 1990 | 37.8 C (100.0 F) |
| 1991 | 38.3 C (100.9 F) |
| 1992 | 37.2 C (99.0 F) |
| 1993 | 40.0 C (104.0 F) |
| 1994 | 38.3 C (100.9 F) |
| 1995 | 37.2 C (99.0 F) |
| 1996 | 41.1 C (106.0 F) |
| 1997 | 40.0 C (104.0 F) |
| 1998 | 40.0 C (104.0 F) |
| 1999 | 38.9 C (102.0 F) |
| 2000 | 38.9 C (102.0 F) |
| 2001 | 38.3 C (100.9 F) |
| 2002 | 38.9 C (102.0 F) |
| 2003 | 38.9 C (102.0 F) |
| 2004 | 40.6 C (105.1 F) |
| 2005 | 32.2 C (90.0 F) |
| 2006 | 30.0 C (86.0 F) |
| 2007 | 37.2 C (99.0 F) |
| 2008 | 34.4 C (93.9 F) |
| 2009 | 39.4 C (102.9 F) |
| 2010 | 42.8 C (109.0 F) |
| 2011 | 36.7 C (98.1 F) |
| 2012 | 41.7 C (107.1 F) |
| 2013 | 38.9 C (102.0 F) |
| 2014 | 37.8 C (100.0 F) |
| 2015 | 38.3 C (100.9 F) |
| 2016 | 39.4 C (102.9 F) |
| 2017 | 44.4 C (111.9 F) |
| 2018 | 39.4 C (102.9 F) |
| 2019 | 36.7 C (98.1 F) |
| 2020 | 45.0 C (113.0 F) |
| 2021 | 38.3 C (100.9 F) |
| 2022 | 41.7 C (107.1 F) |
| 2023 | 37.8 C (100.0 F) |
| 2024 | 40.6 C (105.1 F) |
| 2025 | 37.2 C (99.0 F) |
| 2026 | 36.7 C (98.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | n/a |
| 1894 | n/a |
| 1895 | n/a |
| 1896 | n/a |
| 1906 | n/a |
| 1907 | n/a |
| 1908 | n/a |
| 1909 | n/a |
| 1910 | n/a |
| 1911 | n/a |
| 1912 | n/a |
| 1913 | n/a |
| 1914 | n/a |
| 1915 | n/a |
| 1916 | n/a |
| 1917 | n/a |
| 1927 | 0.0 C (32.0 F) |
| 1928 | -1.1 C (30.0 F) |
| 1929 | -6.1 C (21.0 F) |
| 1930 | -2.2 C (28.0 F) |
| 1931 | -2.8 C (27.0 F) |
| 1932 | -1.7 C (28.9 F) |
| 1933 | -1.1 C (30.0 F) |
| 1934 | 0.6 C (33.1 F) |
| 1935 | -1.7 C (28.9 F) |
| 1936 | -0.6 C (30.9 F) |
| 1937 | -4.4 C (24.1 F) |
| 1938 | 1.1 C (34.0 F) |
| 1939 | -1.1 C (30.0 F) |
| 1940 | 0.6 C (33.1 F) |
| 1941 | 2.2 C (36.0 F) |
| 1942 | -1.1 C (30.0 F) |
| 1943 | 0.0 C (32.0 F) |
| 1944 | 1.7 C (35.1 F) |
| 1945 | -1.7 C (28.9 F) |
| 1946 | 0.0 C (32.0 F) |
| 1947 | -1.1 C (30.0 F) |
| 1948 | -2.8 C (27.0 F) |
| 1949 | -2.8 C (27.0 F) |
| 1950 | -2.2 C (28.0 F) |
| 1951 | -1.1 C (30.0 F) |
| 1952 | -2.8 C (27.0 F) |
| 1953 | 0.6 C (33.1 F) |
| 1954 | 0.6 C (33.1 F) |
| 1955 | -1.1 C (30.0 F) |
| 1956 | -1.1 C (30.0 F) |
| 1957 | -2.8 C (27.0 F) |
| 1958 | 1.7 C (35.1 F) |
| 1959 | 0.0 C (32.0 F) |
| 1960 | -1.1 C (30.0 F) |
| 1961 | 0.0 C (32.0 F) |
| 1962 | -2.2 C (28.0 F) |
| 1963 | -3.9 C (25.0 F) |
| 1964 | -1.1 C (30.0 F) |
| 1965 | -1.1 C (30.0 F) |
| 1966 | 0.0 C (32.0 F) |
| 1967 | -2.2 C (28.0 F) |
| 1968 | -3.3 C (26.1 F) |
| 1969 | -0.6 C (30.9 F) |
| 1970 | -1.7 C (28.9 F) |
| 1971 | -4.4 C (24.1 F) |
| 1972 | -4.4 C (24.1 F) |
| 1973 | -1.1 C (30.0 F) |
| 1974 | -0.6 C (30.9 F) |
| 1975 | -1.7 C (28.9 F) |
| 1976 | -1.1 C (30.0 F) |
| 1977 | 2.2 C (36.0 F) |
| 1978 | -1.7 C (28.9 F) |
| 1979 | -2.8 C (27.0 F) |
| 1980 | 1.1 C (34.0 F) |
| 1981 | 1.1 C (34.0 F) |
| 1982 | -2.8 C (27.0 F) |
| 1983 | 0.0 C (32.0 F) |
| 1984 | -2.2 C (28.0 F) |
| 1985 | -1.7 C (28.9 F) |
| 1986 | -2.2 C (28.0 F) |
| 1987 | -3.3 C (26.1 F) |
| 1988 | -3.9 C (25.0 F) |
| 1989 | -0.6 C (30.9 F) |
| 1990 | -8.3 C (17.1 F) |
| 1991 | 0.0 C (32.0 F) |
| 1992 | 1.1 C (34.0 F) |
| 1993 | -0.6 C (30.9 F) |
| 1994 | -0.6 C (30.9 F) |
| 1995 | 1.7 C (35.1 F) |
| 1996 | 0.0 C (32.0 F) |
| 1997 | -0.6 C (30.9 F) |
| 1998 | -6.7 C (19.9 F) |
| 1999 | 0.0 C (32.0 F) |
| 2000 | 1.1 C (34.0 F) |
| 2001 | 0.6 C (33.1 F) |
| 2002 | -1.1 C (30.0 F) |
| 2003 | 0.0 C (32.0 F) |
| 2004 | -5.0 C (23.0 F) |
| 2005 | 0.0 C (32.0 F) |
| 2006 | 0.6 C (33.1 F) |
| 2007 | -4.4 C (24.1 F) |
| 2008 | -0.6 C (30.9 F) |
| 2009 | 0.0 C (32.0 F) |
| 2010 | -0.6 C (30.9 F) |
| 2011 | -1.7 C (28.9 F) |
| 2012 | -5.0 C (23.0 F) |
| 2013 | -1.1 C (30.0 F) |
| 2014 | 1.7 C (35.1 F) |
| 2015 | -3.3 C (26.1 F) |
| 2016 | -0.6 C (30.9 F) |
| 2017 | 0.6 C (33.1 F) |
| 2018 | -0.6 C (30.9 F) |
| 2019 | 0.0 C (32.0 F) |
| 2020 | 0.0 C (32.0 F) |
| 2021 | -0.6 C (30.9 F) |
| 2022 | -0.6 C (30.9 F) |
| 2023 | 0.0 C (32.0 F) |
| 2024 | 1.1 C (34.0 F) |
| 2025 | 0.6 C (33.1 F) |
| 2026 | 1.7 C (35.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 73.7 mm (2.9 in) |
| 1894 | 43.7 mm (1.7 in) |
| 1895 | 48.5 mm (1.9 in) |
| 1896 | 46.2 mm (1.8 in) |
| 1906 | 2.3 mm (0.09 in) |
| 1907 | 45.7 mm (1.8 in) |
| 1908 | 52.3 mm (2.1 in) |
| 1909 | 114.3 mm (4.5 in) |
| 1910 | 50.8 mm (2.0 in) |
| 1911 | 120.7 mm (4.8 in) |
| 1912 | 32.3 mm (1.3 in) |
| 1913 | 33.0 mm (1.3 in) |
| 1914 | 114.3 mm (4.5 in) |
| 1915 | 66.0 mm (2.6 in) |
| 1916 | 95.3 mm (3.8 in) |
| 1917 | 61.0 mm (2.4 in) |
| 1927 | 47.5 mm (1.9 in) |
| 1928 | 73.7 mm (2.9 in) |
| 1929 | 29.7 mm (1.2 in) |
| 1930 | 29.5 mm (1.2 in) |
| 1931 | 114.3 mm (4.5 in) |
| 1932 | 46.7 mm (1.8 in) |
| 1933 | 91.4 mm (3.6 in) |
| 1934 | 57.9 mm (2.3 in) |
| 1935 | 74.2 mm (2.9 in) |
| 1936 | 102.6 mm (4.0 in) |
| 1937 | 115.8 mm (4.6 in) |
| 1938 | 70.4 mm (2.8 in) |
| 1939 | 31.0 mm (1.2 in) |
| 1940 | 86.6 mm (3.4 in) |
| 1941 | 69.3 mm (2.7 in) |
| 1942 | 72.4 mm (2.9 in) |
| 1943 | 105.2 mm (4.1 in) |
| 1944 | 70.9 mm (2.8 in) |
| 1945 | 98.6 mm (3.9 in) |
| 1946 | 90.9 mm (3.6 in) |
| 1947 | 32.8 mm (1.3 in) |
| 1948 | 40.6 mm (1.6 in) |
| 1949 | 52.1 mm (2.1 in) |
| 1950 | 55.1 mm (2.2 in) |
| 1951 | 60.5 mm (2.4 in) |
| 1952 | 77.5 mm (3.1 in) |
| 1953 | 60.5 mm (2.4 in) |
| 1954 | 50.8 mm (2.0 in) |
| 1955 | 99.1 mm (3.9 in) |
| 1956 | 66.8 mm (2.6 in) |
| 1957 | 55.6 mm (2.2 in) |
| 1958 | 56.9 mm (2.2 in) |
| 1959 | 50.8 mm (2.0 in) |
| 1960 | 89.7 mm (3.5 in) |
| 1961 | 59.2 mm (2.3 in) |
| 1962 | 80.3 mm (3.2 in) |
| 1963 | 118.6 mm (4.7 in) |
| 1964 | 40.6 mm (1.6 in) |
| 1965 | 50.8 mm (2.0 in) |
| 1966 | 67.3 mm (2.6 in) |
| 1967 | 56.9 mm (2.2 in) |
| 1968 | 53.6 mm (2.1 in) |
| 1969 | 149.9 mm (5.9 in) |
| 1970 | 57.2 mm (2.3 in) |
| 1971 | 39.4 mm (1.6 in) |
| 1972 | 67.8 mm (2.7 in) |
| 1973 | 108.0 mm (4.3 in) |
| 1974 | 108.2 mm (4.3 in) |
| 1975 | 73.7 mm (2.9 in) |
| 1976 | 43.7 mm (1.7 in) |
| 1977 | 58.4 mm (2.3 in) |
| 1978 | 101.3 mm (4.0 in) |
| 1979 | 57.2 mm (2.3 in) |
| 1980 | 101.1 mm (4.0 in) |
| 1981 | 72.4 mm (2.9 in) |
| 1982 | 79.2 mm (3.1 in) |
| 1983 | 85.6 mm (3.4 in) |
| 1984 | 38.1 mm (1.5 in) |
| 1985 | 34.0 mm (1.3 in) |
| 1986 | 120.4 mm (4.7 in) |
| 1987 | 43.2 mm (1.7 in) |
| 1988 | 50.8 mm (2.0 in) |
| 1989 | 29.2 mm (1.1 in) |
| 1990 | 44.5 mm (1.8 in) |
| 1991 | 63.5 mm (2.5 in) |
| 1992 | 55.1 mm (2.2 in) |
| 1993 | 62.0 mm (2.4 in) |
| 1994 | 59.2 mm (2.3 in) |
| 1995 | 102.9 mm (4.1 in) |
| 1996 | 68.6 mm (2.7 in) |
| 1997 | 82.8 mm (3.3 in) |
| 1998 | 57.9 mm (2.3 in) |
| 1999 | 30.7 mm (1.2 in) |
| 2000 | 58.7 mm (2.3 in) |
| 2001 | 102.9 mm (4.1 in) |
| 2002 | 74.9 mm (2.9 in) |
| 2003 | 71.1 mm (2.8 in) |
| 2004 | 67.1 mm (2.6 in) |
| 2005 | 62.7 mm (2.5 in) |
| 2006 | 32.8 mm (1.3 in) |
| 2007 | 26.7 mm (1.1 in) |
| 2008 | 27.4 mm (1.1 in) |
| 2009 | 38.1 mm (1.5 in) |
| 2010 | 65.0 mm (2.6 in) |
| 2011 | 50.8 mm (2.0 in) |
| 2012 | 50.8 mm (2.0 in) |
| 2013 | 14.0 mm (0.6 in) |
| 2014 | 53.8 mm (2.1 in) |
| 2015 | 42.7 mm (1.7 in) |
| 2016 | 50.8 mm (2.0 in) |
| 2017 | 66.0 mm (2.6 in) |
| 2018 | 82.6 mm (3.3 in) |
| 2019 | 45.7 mm (1.8 in) |
| 2020 | 51.6 mm (2.0 in) |
| 2021 | 106.7 mm (4.2 in) |
| 2022 | 52.3 mm (2.1 in) |
| 2023 | 153.7 mm (6.1 in) |
| 2024 | 44.2 mm (1.7 in) |
| 2025 | 87.9 mm (3.5 in) |
| 2026 | 46.5 mm (1.8 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 148.6 mm (5.9 in) |
| 1894 | 82.0 mm (3.2 in) |
| 1895 | 107.0 mm (4.2 in) |
| 1896 | 115.0 mm (4.5 in) |
| 1906 | 3.6 mm (0.14 in) |
| 1907 | 69.8 mm (2.7 in) |
| 1908 | 144.8 mm (5.7 in) |
| 1909 | 169.7 mm (6.7 in) |
| 1910 | 62.3 mm (2.5 in) |
| 1911 | 235.7 mm (9.3 in) |
| 1912 | n/a |
| 1913 | 25.1 mm (1.0 in) |
| 1914 | 248.2 mm (9.8 in) |
| 1915 | 41.7 mm (1.6 in) |
| 1916 | 156.5 mm (6.2 in) |
| 1917 | 39.4 mm (1.6 in) |
| 1927 | 74.7 mm (2.9 in) |
| 1928 | 115.0 mm (4.5 in) |
| 1929 | 57.1 mm (2.2 in) |
| 1930 | 85.6 mm (3.4 in) |
| 1931 | 203.2 mm (8.0 in) |
| 1932 | 167.4 mm (6.6 in) |
| 1933 | 149.4 mm (5.9 in) |
| 1934 | 99.3 mm (3.9 in) |
| 1935 | 100.5 mm (4.0 in) |
| 1936 | 151.4 mm (6.0 in) |
| 1937 | 185.0 mm (7.3 in) |
| 1938 | 137.7 mm (5.4 in) |
| 1939 | 30.0 mm (1.2 in) |
| 1940 | 141.9 mm (5.6 in) |
| 1941 | 148.4 mm (5.8 in) |
| 1942 | 147.4 mm (5.8 in) |
| 1943 | 198.2 mm (7.8 in) |
| 1944 | 132.1 mm (5.2 in) |
| 1945 | 160.1 mm (6.3 in) |
| 1946 | 137.4 mm (5.4 in) |
| 1947 | 36.9 mm (1.5 in) |
| 1948 | 68.1 mm (2.7 in) |
| 1949 | 57.0 mm (2.2 in) |
| 1950 | 87.9 mm (3.5 in) |
| 1951 | 103.7 mm (4.1 in) |
| 1952 | 134.2 mm (5.3 in) |
| 1953 | 81.8 mm (3.2 in) |
| 1954 | 81.5 mm (3.2 in) |
| 1955 | 199.4 mm (7.9 in) |
| 1956 | 154.9 mm (6.1 in) |
| 1957 | 79.0 mm (3.1 in) |
| 1958 | 123.7 mm (4.9 in) |
| 1959 | 85.6 mm (3.4 in) |
| 1960 | 100.9 mm (4.0 in) |
| 1961 | 75.7 mm (3.0 in) |
| 1962 | 222.5 mm (8.8 in) |
| 1963 | 149.6 mm (5.9 in) |
| 1964 | 78.2 mm (3.1 in) |
| 1965 | 149.6 mm (5.9 in) |
| 1966 | 194.0 mm (7.6 in) |
| 1967 | 120.2 mm (4.7 in) |
| 1968 | 66.0 mm (2.6 in) |
| 1969 | 347.4 mm (13.7 in) |
| 1970 | 118.2 mm (4.7 in) |
| 1971 | 103.7 mm (4.1 in) |
| 1972 | 115.5 mm (4.5 in) |
| 1973 | 241.0 mm (9.5 in) |
| 1974 | 154.4 mm (6.1 in) |
| 1975 | 151.4 mm (6.0 in) |
| 1976 | 94.7 mm (3.7 in) |
| 1977 | 101.0 mm (4.0 in) |
| 1978 | 241.9 mm (9.5 in) |
| 1979 | 115.9 mm (4.6 in) |
| 1980 | 248.4 mm (9.8 in) |
| 1981 | 123.5 mm (4.9 in) |
| 1982 | 111.8 mm (4.4 in) |
| 1983 | 194.6 mm (7.7 in) |
| 1984 | 61.3 mm (2.4 in) |
| 1985 | 84.6 mm (3.3 in) |
| 1986 | 226.3 mm (8.9 in) |
| 1987 | 63.3 mm (2.5 in) |
| 1988 | 100.5 mm (4.0 in) |
| 1989 | 29.7 mm (1.2 in) |
| 1990 | 50.9 mm (2.0 in) |
| 1991 | 135.7 mm (5.3 in) |
| 1992 | 163.0 mm (6.4 in) |
| 1993 | 112.3 mm (4.4 in) |
| 1994 | 110.0 mm (4.3 in) |
| 1995 | 226.3 mm (8.9 in) |
| 1996 | 136.1 mm (5.4 in) |
| 1997 | 145.0 mm (5.7 in) |
| 1998 | 117.0 mm (4.6 in) |
| 1999 | 64.4 mm (2.5 in) |
| 2000 | 152.1 mm (6.0 in) |
| 2001 | 146.4 mm (5.8 in) |
| 2002 | 129.8 mm (5.1 in) |
| 2003 | 51.1 mm (2.0 in) |
| 2004 | 175.6 mm (6.9 in) |
| 2005 | 164.2 mm (6.5 in) |
| 2006 | 33.8 mm (1.3 in) |
| 2007 | 36.7 mm (1.4 in) |
| 2008 | 34.8 mm (1.4 in) |
| 2009 | 65.3 mm (2.6 in) |
| 2010 | 161.6 mm (6.4 in) |
| 2011 | 72.1 mm (2.8 in) |
| 2012 | 100.1 mm (3.9 in) |
| 2013 | 24.2 mm (1.0 in) |
| 2014 | 126.0 mm (5.0 in) |
| 2015 | 52.1 mm (2.1 in) |
| 2016 | 106.4 mm (4.2 in) |
| 2017 | 144.8 mm (5.7 in) |
| 2018 | 133.9 mm (5.3 in) |
| 2019 | 106.0 mm (4.2 in) |
| 2020 | 72.4 mm (2.9 in) |
| 2021 | 191.2 mm (7.5 in) |
| 2022 | 113.3 mm (4.5 in) |
| 2023 | 224.1 mm (8.8 in) |
| 2024 | 83.4 mm (3.3 in) |
| 2025 | 152.6 mm (6.0 in) |
| 2026 | 107.8 mm (4.2 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 168 days |
| 1894 | 80 days |
| 1895 | 139 days |
| 1896 | 14 days |
| 1906 | 152 days |
| 1907 | 209 days |
| 1908 | 46 days |
| 1909 | 37 days |
| 1910 | 19 days |
| 1911 | 10 days |
| 1912 | n/a |
| 1913 | 14 days |
| 1914 | 6 days |
| 1915 | n/a |
| 1916 | 18 days |
| 1917 | n/a |
| 1927 | 25 days |
| 1928 | 171 days |
| 1929 | 177 days |
| 1930 | 102 days |
| 1931 | 70 days |
| 1932 | 77 days |
| 1933 | 144 days |
| 1934 | 108 days |
| 1935 | 117 days |
| 1936 | 55 days |
| 1937 | 105 days |
| 1938 | 92 days |
| 1939 | 124 days |
| 1940 | 153 days |
| 1941 | 143 days |
| 1942 | 137 days |
| 1943 | 173 days |
| 1944 | 119 days |
| 1945 | 89 days |
| 1946 | 67 days |
| 1947 | 61 days |
| 1948 | 133 days |
| 1949 | 142 days |
| 1950 | 107 days |
| 1951 | 87 days |
| 1952 | 109 days |
| 1953 | 150 days |
| 1954 | 185 days |
| 1955 | 145 days |
| 1956 | 144 days |
| 1957 | 122 days |
| 1958 | 106 days |
| 1959 | 139 days |
| 1960 | 154 days |
| 1961 | 149 days |
| 1962 | 166 days |
| 1963 | 86 days |
| 1964 | 83 days |
| 1965 | 215 days |
| 1966 | 110 days |
| 1967 | 96 days |
| 1968 | 150 days |
| 1969 | 135 days |
| 1970 | 133 days |
| 1971 | 124 days |
| 1972 | 75 days |
| 1973 | 166 days |
| 1974 | 160 days |
| 1975 | 164 days |
| 1976 | 123 days |
| 1977 | 145 days |
| 1978 | 66 days |
| 1979 | 155 days |
| 1980 | 153 days |
| 1981 | 191 days |
| 1982 | 78 days |
| 1983 | 104 days |
| 1984 | 117 days |
| 1985 | 89 days |
| 1986 | 85 days |
| 1987 | 122 days |
| 1988 | 68 days |
| 1989 | 69 days |
| 1990 | 97 days |
| 1991 | 73 days |
| 1992 | 99 days |
| 1993 | 127 days |
| 1994 | 127 days |
| 1995 | 136 days |
| 1996 | 156 days |
| 1997 | 94 days |
| 1998 | 92 days |
| 1999 | 163 days |
| 2000 | 119 days |
| 2001 | 191 days |
| 2002 | 169 days |
| 2003 | 180 days |
| 2004 | 204 days |
| 2005 | 22 days |
| 2006 | 62 days |
| 2007 | 88 days |
| 2008 | 59 days |
| 2009 | 129 days |
| 2010 | 85 days |
| 2011 | 119 days |
| 2012 | 167 days |
| 2013 | 154 days |
| 2014 | 188 days |
| 2015 | 72 days |
| 2016 | 174 days |
| 2017 | 86 days |
| 2018 | 166 days |
| 2019 | 183 days |
| 2020 | 172 days |
| 2021 | 127 days |
| 2022 | 141 days |
| 2023 | 115 days |
| 2024 | 180 days |
| 2025 | 150 days |
| 2026 | 94 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
28 years with a frostAcross 28 years with a frost, the median last spring frost at San Luis Obispo Poly falls on 22 February and the median first autumn frost on 7 December, which leaves a median of 298 days between them.
Fitted over all years, the growing season changes by -2.2 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1928 to 2015) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 22 February | n/a | 22 February | n/a | +2.1 days per decade |
| First autumn frost | 7 December | n/a | 7 December | n/a | -0.1 days per decade |
| Growing days | 298 days | n/a | 298 days | n/a | -2.2 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
88 years, 1893 to 2025A day with at least 62.4 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 153.5 mm (6.0 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 62.4 mm (2.5 in) | |
| 5 years | 86.1 mm (3.4 in) | |
| 10 years | 102.1 mm (4.0 in) | |
| 25 years | 122.6 mm (4.8 in) | |
| 50 years | 138.0 mm (5.4 in) | |
| 100 years | 153.5 mm (6.0 in) | Longer than the 88 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, 88 years of values from 1893 to 2025.
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: 153.7 mm (6.1 in) in 2023; 149.9 mm (5.9 in) in 1969; 120.4 mm (4.7 in) in 1986.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2011 to 2025 against 1961 to 1990Over 2011 to 2025, San Luis Obispo Poly had a mean temperature of 16.4 C (61.5 F) and 520.9 mm (20.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Tenerife/Los Rodeos (Spain, 9,382 km away), Santa Barbara (United States, 133 km away) and Oxnard (United States, 183 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Tenerife/Los Rodeos | Spain | 9,382 km (5,830 mi) | 16.1 C (60.9 F) | 629.0 mm (24.8 in) | 0.77 |
| Santa Barbara | United States | 133 km (83 mi) | 15.9 C (60.6 F) | 420.3 mm (16.5 in) | 0.77 |
| Oxnard | United States | 183 km (114 mi) | 16.0 C (60.7 F) | 353.5 mm (13.9 in) | 0.86 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-13).