Morro Bay Fire Dept Weather Records (USC00045866)
Record envelope, standing records and threshold days for Morro Bay Fire Dept (USC00045866), California, United States, with 68 years of record.
Key Facts for Morro Bay Fire Dept
- Morro Bay Fire Dept (USC00045866) is a weather station in California, United States at 35.37 latitude and -120.84 longitude, 36 m (118 ft) above sea level.
- The station reports from 1959 to 2026, 68 years of record.
- 1,464 records set at Morro Bay Fire Dept still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Morro Bay Fire Dept set a daily record precipitation of 1.0 mm (0.04 in) on 28 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, 35.37 latitude, -120.84 longitude.
- Elevation: 36 m (118 ft).
- Period of record: 1959 to 2026, 68 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 | 31.7 C (89.1 F) | -5.0 C (23.0 F) | n/a | n/a |
| Feb | 30.6 C (87.1 F) | -5.6 C (21.9 F) | n/a | n/a |
| Mar | 33.3 C (91.9 F) | -2.2 C (28.0 F) | n/a | n/a |
| Apr | 37.8 C (100.0 F) | -0.6 C (30.9 F) | n/a | n/a |
| May | 33.9 C (93.0 F) | 0.6 C (33.1 F) | n/a | n/a |
| Jun | 30.0 C (86.0 F) | 3.9 C (39.0 F) | n/a | n/a |
| Jul | 33.3 C (91.9 F) | 4.4 C (39.9 F) | n/a | n/a |
| Aug | 34.4 C (93.9 F) | 4.4 C (39.9 F) | n/a | n/a |
| Sep | 38.3 C (100.9 F) | 4.4 C (39.9 F) | n/a | n/a |
| Oct | 41.1 C (106.0 F) | 2.2 C (36.0 F) | n/a | n/a |
| Nov | 33.3 C (91.9 F) | -0.6 C (30.9 F) | n/a | n/a |
| Dec | 27.2 C (81.0 F) | -5.6 C (21.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1959 | 19 |
| 1960 | 20 |
| 1961 | 20 |
| 1962 | 36 |
| 1963 | 20 |
| 1964 | 34 |
| 1965 | 31 |
| 1966 | 20 |
| 1967 | 24 |
| 1968 | 19 |
| 1969 | 23 |
| 1970 | 16 |
| 1971 | 28 |
| 1972 | 25 |
| 1973 | 9 |
| 1974 | 12 |
| 1975 | 26 |
| 1976 | 22 |
| 1977 | 23 |
| 1978 | 36 |
| 1979 | 13 |
| 1980 | 25 |
| 1981 | 17 |
| 1982 | 14 |
| 1983 | 22 |
| 1984 | 25 |
| 1985 | 37 |
| 1986 | 30 |
| 1987 | 49 |
| 1988 | 22 |
| 1989 | 39 |
| 1990 | 30 |
| 1991 | 52 |
| 1992 | 61 |
| 1993 | 27 |
| 1994 | 18 |
| 1995 | 20 |
| 1996 | 26 |
| 1997 | 20 |
| 1998 | 12 |
| 1999 | 43 |
| 2000 | 11 |
| 2001 | 19 |
| 2002 | 29 |
| 2003 | 12 |
| 2004 | 13 |
| 2005 | 13 |
| 2006 | 16 |
| 2007 | 11 |
| 2008 | 4 |
| 2009 | 20 |
| 2010 | 5 |
| 2011 | 23 |
| 2012 | 33 |
| 2013 | 16 |
| 2014 | 64 |
| 2015 | 110 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1990-12-22 | Record low minimum temperature | Record low minimum temperature -5.6 C (21.9 F) |
| 1995-03-10 | Record daily precipitation | Record daily precipitation 118.9 mm (4.7 in) |
| 1995-03-11 | Record daily precipitation | Record daily precipitation 224.0 mm (8.8 in) |
| 2008-01-19 | Record daily snowfall | Record daily snowfall 3.8 cm (1.5 in) |
| 2015-09-10 | Record high minimum temperature | Record high minimum temperature 23.3 C (73.9 F) |
| 2015-09-12 | Record high minimum temperature | Record high minimum temperature 23.9 C (75.0 F) |
Wettest Day of Each Month
Mar: 224.0 mm (8.8 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 94.0 mm (3.7 in) | 1 January 2006 |
| Feb | 76.2 mm (3.0 in) | 18 February 2017 |
| Mar | 224.0 mm (8.8 in) | 11 March 1995 |
| Apr | 64.8 mm (2.6 in) | 10 April 1982 |
| May | 56.6 mm (2.2 in) | 21 May 2006 |
| Jun | 18.0 mm (0.7 in) | 5 June 2011 |
| Jul | 46.2 mm (1.8 in) | 19 July 2015 |
| Aug | 19.8 mm (0.8 in) | 20 August 1976 |
| Sep | 30.5 mm (1.2 in) | 29 September 1976 |
| Oct | 53.3 mm (2.1 in) | 17 October 2016 |
| Nov | 45.0 mm (1.8 in) | 17 November 2023 |
| Dec | 92.7 mm (3.6 in) | 18 December 2010 |
Period of Record Coverage
1959 to 2015| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1959 | 331 | 91% | Yes |
| 1960 | 364 | 99% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 363 | 99% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 364 | 100% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 365 | 100% | Yes |
| 1973 | 362 | 99% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 362 | 99% | Yes |
| 1977 | 361 | 99% | Yes |
| 1978 | 364 | 100% | Yes |
| 1979 | 363 | 99% | Yes |
| 1980 | 365 | 100% | Yes |
| 1981 | 363 | 99% | Yes |
| 1982 | 364 | 100% | Yes |
| 1983 | 364 | 100% | Yes |
| 1984 | 361 | 99% | Yes |
| 1985 | 346 | 95% | Yes |
| 1986 | 361 | 99% | Yes |
| 1987 | 359 | 98% | Yes |
| 1988 | 364 | 99% | Yes |
| 1989 | 362 | 99% | Yes |
| 1990 | 363 | 99% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 364 | 99% | Yes |
| 1993 | 363 | 99% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 362 | 99% | Yes |
| 1996 | 365 | 100% | Yes |
| 1997 | 363 | 99% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 364 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 364 | 100% | Yes |
| 2002 | 360 | 99% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 362 | 99% | Yes |
| 2006 | 363 | 99% | Yes |
| 2007 | 306 | 84% | No |
| 2008 | 296 | 81% | No |
| 2009 | 332 | 91% | Yes |
| 2010 | 335 | 92% | Yes |
| 2011 | 331 | 91% | Yes |
| 2012 | 274 | 75% | No |
| 2013 | 365 | 100% | Yes |
| 2014 | 362 | 99% | Yes |
| 2015 | 363 | 99% | Yes |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 28 August 2026 | Morro Bay Fire Dept, US | daily rain (Provisional) | 1.0 mm (0.04 in) | 0.7 mm (0.03 in) | 33 years | 17 of 100 (Routine) |
| 22 July 2026 | Morro Bay Fire Dept, US | daily rain | 1.3 mm (0.05 in) | 0.5 mm (0.02 in) | 0 years | 6 of 100 (Routine) |
| 29 May 2026 | Morro Bay Fire Dept, US | daily rain | 15.2 mm (0.6 in) | 13.2 mm (0.5 in) | 7 years | 20 of 100 (Routine) |
| 21 April 2026 | Morro Bay Fire Dept, US | daily rain | 14.2 mm (0.6 in) | 5.6 mm (0.22 in) | 59 years | 20 of 100 (Routine) |
| 25 December 2025 | Morro Bay Fire Dept, US | daily rain | 26.2 mm (1.0 in) | 5.9 mm (0.23 in) | 15 years | 14 of 100 (Routine) |
| 14 October 2025 | Morro Bay Fire Dept, US | daily rain | 49.0 mm (1.9 in) | 9.4 mm (0.37 in) | 56 years | 32 of 100 (Routine) |
| 24 September 2025 | Morro Bay Fire Dept, US | daily rain | 17.8 mm (0.7 in) | 9.9 mm (0.39 in) | 39 years | 20 of 100 (Routine) |
| 17 September 2025 | Morro Bay Fire Dept, US | daily rain (Tie) | 0.3 mm (0.01 in) | tie | 60 years | 6 of 100 (Routine) |
| 27 August 2025 | Morro Bay Fire Dept, US | daily rain (Tie) | 0.3 mm (0.01 in) | tie | 43 years | 4 of 100 (Routine) |
| 9 August 2025 | Morro Bay Fire Dept, US | daily rain (Tie) | 0.3 mm (0.01 in) | tie | 0 years | 1 of 100 (Routine) |
| 8 August 2025 | Morro Bay Fire Dept, US | daily rain | 0.3 mm (0.01 in) | 0.3 mm (0.01 in) | 66 years | 20 of 100 (Routine) |
| 26 July 2025 | Morro Bay Fire Dept, US | daily rain (Tie) | 0.3 mm (0.01 in) | tie | 28 years | 3 of 100 (Routine) |
| 22 July 2025 | Morro Bay Fire Dept, US | daily rain | 0.8 mm (0.03 in) | 0.3 mm (0.01 in) | 28 years | 14 of 100 (Routine) |
| 21 July 2025 | Morro Bay Fire Dept, US | daily rain | 0.5 mm (0.02 in) | 0.2 mm (0.01 in) | 39 years | 17 of 100 (Routine) |
| 30 June 2025 | Morro Bay Fire Dept, US | daily rain | 1.0 mm (0.04 in) | 0.2 mm (0.01 in) | 0 years | 6 of 100 (Routine) |
| 13 March 2025 | Morro Bay Fire Dept, US | daily rain | 35.6 mm (1.4 in) | 10.5 mm (0.4 in) | 56 years | 29 of 100 (Routine) |
| 23 November 2024 | Morro Bay Fire Dept, US | daily rain (Tie) | 10.2 mm (0.4 in) | tie | 59 years | 5 of 100 (Routine) |
| 17 September 2024 | Morro Bay Fire Dept, US | daily rain (Tie) | 0.3 mm (0.01 in) | tie | 60 years | 6 of 100 (Routine) |
| 14 September 2024 | Morro Bay Fire Dept, US | daily rain (Tie) | 0.3 mm (0.01 in) | tie | 46 years | 4 of 100 (Routine) |
| 9 September 2024 | Morro Bay Fire Dept, US | daily rain | 0.3 mm (0.01 in) | 0.3 mm (0.01 in) | 65 years | 20 of 100 (Routine) |
Climate Trend
50 complete years, 1960 to 2015| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1960 | 13.0 C | -0.61 C |
| 1961 | 13.4 C | -0.19 C |
| 1962 | 13.0 C | -0.63 C |
| 1963 | 13.8 C | +0.20 C |
| 1964 | 12.7 C | -0.85 C |
| 1965 | 13.2 C | -0.43 C |
| 1966 | 13.3 C | -0.32 C |
| 1967 | 13.9 C | +0.26 C |
| 1968 | 14.0 C | +0.44 C |
| 1969 | 13.7 C | +0.15 C |
| 1970 | 13.7 C | +0.09 C |
| 1971 | 13.1 C | -0.46 C |
| 1972 | 14.2 C | +0.62 C |
| 1973 | 13.5 C | -0.07 C |
| 1974 | 13.2 C | -0.42 C |
| 1975 | 12.3 C | -1.34 C |
| 1976 | 13.8 C | +0.20 C |
| 1977 | 13.6 C | -0.01 C |
| 1978 | 13.4 C | -0.18 C |
| 1979 | 13.2 C | -0.38 C |
| 1980 | 13.8 C | +0.19 C |
| 1981 | 13.5 C | -0.09 C |
| 1982 | 13.2 C | -0.37 C |
| 1983 | 14.4 C | +0.78 C |
| 1984 | 14.0 C | +0.41 C |
| 1986 | 13.1 C | -0.54 C |
| 1987 | 12.5 C | -1.13 C |
| 1988 | 13.3 C | -0.28 C |
| 1989 | 12.7 C | -0.85 C |
| 1990 | 12.8 C | -0.77 C |
| 1991 | 12.1 C | -1.49 C |
| 1992 | 12.7 C | -0.86 C |
| 1993 | 13.7 C | +0.12 C |
| 1994 | 13.0 C | -0.60 C |
| 1995 | 14.1 C | +0.48 C |
| 1996 | 13.9 C | +0.34 C |
| 1997 | 14.5 C | +0.91 C |
| 1998 | 13.6 C | -0.04 C |
| 1999 | 12.5 C | -1.08 C |
| 2000 | 13.3 C | -0.32 C |
| 2001 | 13.0 C | -0.61 C |
| 2002 | 12.7 C | -0.85 C |
| 2003 | 13.8 C | +0.19 C |
| 2004 | 13.5 C | -0.10 C |
| 2005 | 13.6 C | +0.02 C |
| 2006 | 13.3 C | -0.33 C |
| 2010 | 14.6 C | +0.97 C |
| 2013 | 15.8 C | +2.16 C |
| 2014 | 17.3 C | +3.70 C |
| 2015 | 17.6 C | +4.00 C |
The annual mean temperature here has risen by 0.3 C (0.1 to 0.4) per decade over 1960 to 2015. In Fahrenheit: 0.5 F (0.2 to 0.8) per decade. The slope is a straight line fitted to 50 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.3 C (0.1 to 0.4) per decade | 0.5 F (0.2 to 0.8) per decade | 1960 to 2015 | 50 | Rise |
| Mean daily maximum | 0.24 C (0.03 to 0.45) per decade | 0.4 F (0.1 to 0.8) per decade | 1960 to 2015 | 50 | Rise |
| Mean daily minimum | 0.3 C (0.1 to 0.5) per decade | 0.5 F (0.2 to 0.9) per decade | 1960 to 2015 | 50 | 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
1959 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 41.1 C (106.0 F) | 1987 | 33.3 C (91.9 F) | 57 |
| Coldest night (TNn) | -5.6 C (21.9 F) | 1990 | 0.0 C (32.0 F) | 57 |
| Wettest day (Rx1day) | 224.0 mm (8.8 in) | 1995 | 47.4 mm (1.9 in) | 68 |
| Wettest five days (Rx5day) | 366.3 mm (14.4 in) | 1995 | 82.1 mm (3.2 in) | 68 |
| Longest dry spell (CDD) | 227 days | 2021 | 108 days | 68 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1959 | 32.8 C (91.0 F) |
| 1960 | 29.4 C (84.9 F) |
| 1961 | 36.7 C (98.1 F) |
| 1962 | 34.4 C (93.9 F) |
| 1963 | 27.2 C (81.0 F) |
| 1964 | 37.2 C (99.0 F) |
| 1965 | 36.7 C (98.1 F) |
| 1966 | 38.3 C (100.9 F) |
| 1967 | 33.3 C (91.9 F) |
| 1968 | 36.7 C (98.1 F) |
| 1969 | 30.6 C (87.1 F) |
| 1970 | 37.8 C (100.0 F) |
| 1971 | 33.9 C (93.0 F) |
| 1972 | 36.1 C (97.0 F) |
| 1973 | 32.8 C (91.0 F) |
| 1974 | 31.7 C (89.1 F) |
| 1975 | 28.3 C (82.9 F) |
| 1976 | 31.7 C (89.1 F) |
| 1977 | 30.0 C (86.0 F) |
| 1978 | 35.6 C (96.1 F) |
| 1979 | 33.3 C (91.9 F) |
| 1980 | 32.2 C (90.0 F) |
| 1981 | 32.8 C (91.0 F) |
| 1982 | 28.9 C (84.0 F) |
| 1983 | 36.1 C (97.0 F) |
| 1984 | 36.1 C (97.0 F) |
| 1985 | 32.8 C (91.0 F) |
| 1986 | 33.3 C (91.9 F) |
| 1987 | 41.1 C (106.0 F) |
| 1988 | 34.4 C (93.9 F) |
| 1989 | 37.8 C (100.0 F) |
| 1990 | 32.2 C (90.0 F) |
| 1991 | 32.2 C (90.0 F) |
| 1992 | 32.8 C (91.0 F) |
| 1993 | 34.4 C (93.9 F) |
| 1994 | 33.3 C (91.9 F) |
| 1995 | 32.8 C (91.0 F) |
| 1996 | 36.1 C (97.0 F) |
| 1997 | 33.9 C (93.0 F) |
| 1998 | 27.8 C (82.0 F) |
| 1999 | 35.6 C (96.1 F) |
| 2000 | 28.3 C (82.9 F) |
| 2001 | 31.1 C (88.0 F) |
| 2002 | 32.8 C (91.0 F) |
| 2003 | 34.4 C (93.9 F) |
| 2004 | 36.1 C (97.0 F) |
| 2005 | 30.6 C (87.1 F) |
| 2006 | 32.2 C (90.0 F) |
| 2007 | 31.1 C (88.0 F) |
| 2008 | 32.8 C (91.0 F) |
| 2009 | 32.2 C (90.0 F) |
| 2010 | 31.1 C (88.0 F) |
| 2011 | 36.1 C (97.0 F) |
| 2012 | 34.4 C (93.9 F) |
| 2013 | 32.8 C (91.0 F) |
| 2014 | 38.9 C (102.0 F) |
| 2015 | 35.6 C (96.1 F) |
| 2016 | n/a |
| 2017 | n/a |
| 2018 | n/a |
| 2019 | n/a |
| 2020 | n/a |
| 2021 | n/a |
| 2022 | n/a |
| 2023 | n/a |
| 2024 | n/a |
| 2025 | n/a |
| 2026 | n/a |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1959 | -0.6 C (30.9 F) |
| 1960 | -1.1 C (30.0 F) |
| 1961 | 0.6 C (33.1 F) |
| 1962 | -1.1 C (30.0 F) |
| 1963 | -0.6 C (30.9 F) |
| 1964 | 0.0 C (32.0 F) |
| 1965 | 0.0 C (32.0 F) |
| 1966 | 0.0 C (32.0 F) |
| 1967 | -2.8 C (27.0 F) |
| 1968 | 1.1 C (34.0 F) |
| 1969 | -2.2 C (28.0 F) |
| 1970 | 1.1 C (34.0 F) |
| 1971 | 0.6 C (33.1 F) |
| 1972 | -1.7 C (28.9 F) |
| 1973 | 1.1 C (34.0 F) |
| 1974 | 0.0 C (32.0 F) |
| 1975 | -1.1 C (30.0 F) |
| 1976 | -1.1 C (30.0 F) |
| 1977 | -1.1 C (30.0 F) |
| 1978 | -1.1 C (30.0 F) |
| 1979 | -2.2 C (28.0 F) |
| 1980 | 2.2 C (36.0 F) |
| 1981 | 1.7 C (35.1 F) |
| 1982 | 0.6 C (33.1 F) |
| 1983 | 1.1 C (34.0 F) |
| 1984 | 0.0 C (32.0 F) |
| 1985 | -1.1 C (30.0 F) |
| 1986 | 0.6 C (33.1 F) |
| 1987 | -3.9 C (25.0 F) |
| 1988 | -2.2 C (28.0 F) |
| 1989 | -1.1 C (30.0 F) |
| 1990 | -5.6 C (21.9 F) |
| 1991 | -1.1 C (30.0 F) |
| 1992 | -3.3 C (26.1 F) |
| 1993 | -5.0 C (23.0 F) |
| 1994 | 1.7 C (35.1 F) |
| 1995 | 2.8 C (37.0 F) |
| 1996 | 0.6 C (33.1 F) |
| 1997 | 0.6 C (33.1 F) |
| 1998 | -1.1 C (30.0 F) |
| 1999 | 1.1 C (34.0 F) |
| 2000 | 2.2 C (36.0 F) |
| 2001 | -0.6 C (30.9 F) |
| 2002 | -0.6 C (30.9 F) |
| 2003 | 1.7 C (35.1 F) |
| 2004 | 1.1 C (34.0 F) |
| 2005 | 2.8 C (37.0 F) |
| 2006 | 0.0 C (32.0 F) |
| 2007 | -5.6 C (21.9 F) |
| 2008 | 1.7 C (35.1 F) |
| 2009 | 1.1 C (34.0 F) |
| 2010 | 2.2 C (36.0 F) |
| 2011 | 1.7 C (35.1 F) |
| 2012 | 1.7 C (35.1 F) |
| 2013 | -0.6 C (30.9 F) |
| 2014 | 2.2 C (36.0 F) |
| 2015 | 1.1 C (34.0 F) |
| 2016 | n/a |
| 2017 | n/a |
| 2018 | n/a |
| 2019 | n/a |
| 2020 | n/a |
| 2021 | n/a |
| 2022 | n/a |
| 2023 | n/a |
| 2024 | n/a |
| 2025 | n/a |
| 2026 | n/a |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1959 | 29.2 mm (1.1 in) |
| 1960 | 37.8 mm (1.5 in) |
| 1961 | 32.3 mm (1.3 in) |
| 1962 | 78.2 mm (3.1 in) |
| 1963 | 48.3 mm (1.9 in) |
| 1964 | 35.1 mm (1.4 in) |
| 1965 | 38.9 mm (1.5 in) |
| 1966 | 42.7 mm (1.7 in) |
| 1967 | 26.2 mm (1.0 in) |
| 1968 | 39.6 mm (1.6 in) |
| 1969 | 66.0 mm (2.6 in) |
| 1970 | 42.2 mm (1.7 in) |
| 1971 | 39.1 mm (1.5 in) |
| 1972 | 27.4 mm (1.1 in) |
| 1973 | 71.1 mm (2.8 in) |
| 1974 | 53.3 mm (2.1 in) |
| 1975 | 30.5 mm (1.2 in) |
| 1976 | 31.0 mm (1.2 in) |
| 1977 | 67.8 mm (2.7 in) |
| 1978 | 41.9 mm (1.6 in) |
| 1979 | 53.3 mm (2.1 in) |
| 1980 | 61.7 mm (2.4 in) |
| 1981 | 46.7 mm (1.8 in) |
| 1982 | 64.8 mm (2.6 in) |
| 1983 | 59.9 mm (2.4 in) |
| 1984 | 21.1 mm (0.8 in) |
| 1985 | 32.5 mm (1.3 in) |
| 1986 | 43.2 mm (1.7 in) |
| 1987 | 46.5 mm (1.8 in) |
| 1988 | 34.0 mm (1.3 in) |
| 1989 | 26.7 mm (1.1 in) |
| 1990 | 22.1 mm (0.9 in) |
| 1991 | 59.7 mm (2.4 in) |
| 1992 | 63.8 mm (2.5 in) |
| 1993 | 60.7 mm (2.4 in) |
| 1994 | 33.8 mm (1.3 in) |
| 1995 | 224.0 mm (8.8 in) |
| 1996 | 66.8 mm (2.6 in) |
| 1997 | 45.7 mm (1.8 in) |
| 1998 | 53.6 mm (2.1 in) |
| 1999 | 25.9 mm (1.0 in) |
| 2000 | 58.7 mm (2.3 in) |
| 2001 | 50.3 mm (2.0 in) |
| 2002 | 33.0 mm (1.3 in) |
| 2003 | 32.5 mm (1.3 in) |
| 2004 | 62.2 mm (2.4 in) |
| 2005 | 57.2 mm (2.3 in) |
| 2006 | 94.0 mm (3.7 in) |
| 2007 | 25.9 mm (1.0 in) |
| 2008 | 67.3 mm (2.6 in) |
| 2009 | 50.3 mm (2.0 in) |
| 2010 | 92.7 mm (3.6 in) |
| 2011 | 61.0 mm (2.4 in) |
| 2012 | 25.7 mm (1.0 in) |
| 2013 | 19.8 mm (0.8 in) |
| 2014 | 59.2 mm (2.3 in) |
| 2015 | 46.2 mm (1.8 in) |
| 2016 | 61.0 mm (2.4 in) |
| 2017 | 76.2 mm (3.0 in) |
| 2018 | 98.6 mm (3.9 in) |
| 2019 | 48.0 mm (1.9 in) |
| 2020 | 44.7 mm (1.8 in) |
| 2021 | 66.0 mm (2.6 in) |
| 2022 | 37.1 mm (1.5 in) |
| 2023 | 67.3 mm (2.6 in) |
| 2024 | 46.7 mm (1.8 in) |
| 2025 | 49.0 mm (1.9 in) |
| 2026 | 49.5 mm (1.9 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1959 | 49.3 mm (1.9 in) |
| 1960 | 50.8 mm (2.0 in) |
| 1961 | 37.1 mm (1.5 in) |
| 1962 | 155.0 mm (6.1 in) |
| 1963 | 89.0 mm (3.5 in) |
| 1964 | 68.0 mm (2.7 in) |
| 1965 | 100.4 mm (4.0 in) |
| 1966 | 84.5 mm (3.3 in) |
| 1967 | 60.1 mm (2.4 in) |
| 1968 | 54.3 mm (2.1 in) |
| 1969 | 140.4 mm (5.5 in) |
| 1970 | 88.2 mm (3.5 in) |
| 1971 | 69.8 mm (2.7 in) |
| 1972 | 68.3 mm (2.7 in) |
| 1973 | 107.9 mm (4.2 in) |
| 1974 | 103.3 mm (4.1 in) |
| 1975 | 66.6 mm (2.6 in) |
| 1976 | 81.2 mm (3.2 in) |
| 1977 | 84.9 mm (3.3 in) |
| 1978 | 123.3 mm (4.9 in) |
| 1979 | 83.0 mm (3.3 in) |
| 1980 | 118.9 mm (4.7 in) |
| 1981 | 75.1 mm (3.0 in) |
| 1982 | 75.7 mm (3.0 in) |
| 1983 | 141.4 mm (5.6 in) |
| 1984 | 29.4 mm (1.2 in) |
| 1985 | 42.1 mm (1.7 in) |
| 1986 | 99.1 mm (3.9 in) |
| 1987 | 76.2 mm (3.0 in) |
| 1988 | 63.5 mm (2.5 in) |
| 1989 | 34.5 mm (1.4 in) |
| 1990 | 40.7 mm (1.6 in) |
| 1991 | 132.6 mm (5.2 in) |
| 1992 | 118.0 mm (4.6 in) |
| 1993 | 111.2 mm (4.4 in) |
| 1994 | 58.5 mm (2.3 in) |
| 1995 | 366.3 mm (14.4 in) |
| 1996 | 90.9 mm (3.6 in) |
| 1997 | 102.7 mm (4.0 in) |
| 1998 | 99.4 mm (3.9 in) |
| 1999 | 41.4 mm (1.6 in) |
| 2000 | 119.0 mm (4.7 in) |
| 2001 | 87.4 mm (3.4 in) |
| 2002 | 67.5 mm (2.7 in) |
| 2003 | 41.2 mm (1.6 in) |
| 2004 | 147.0 mm (5.8 in) |
| 2005 | 130.8 mm (5.1 in) |
| 2006 | 116.4 mm (4.6 in) |
| 2007 | 27.4 mm (1.1 in) |
| 2008 | 103.9 mm (4.1 in) |
| 2009 | 51.8 mm (2.0 in) |
| 2010 | 182.4 mm (7.2 in) |
| 2011 | 100.9 mm (4.0 in) |
| 2012 | 47.3 mm (1.9 in) |
| 2013 | 19.8 mm (0.8 in) |
| 2014 | 74.4 mm (2.9 in) |
| 2015 | 46.2 mm (1.8 in) |
| 2016 | 61.0 mm (2.4 in) |
| 2017 | 91.5 mm (3.6 in) |
| 2018 | 132.4 mm (5.2 in) |
| 2019 | 79.8 mm (3.1 in) |
| 2020 | 44.7 mm (1.8 in) |
| 2021 | 177.8 mm (7.0 in) |
| 2022 | 39.1 mm (1.5 in) |
| 2023 | 103.4 mm (4.1 in) |
| 2024 | 63.3 mm (2.5 in) |
| 2025 | 61.2 mm (2.4 in) |
| 2026 | 85.3 mm (3.4 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1959 | 95 days |
| 1960 | 161 days |
| 1961 | 184 days |
| 1962 | 97 days |
| 1963 | 84 days |
| 1964 | 83 days |
| 1965 | 73 days |
| 1966 | 61 days |
| 1967 | 111 days |
| 1968 | 112 days |
| 1969 | 79 days |
| 1970 | 189 days |
| 1971 | 124 days |
| 1972 | 80 days |
| 1973 | 96 days |
| 1974 | 83 days |
| 1975 | 137 days |
| 1976 | 124 days |
| 1977 | 140 days |
| 1978 | 69 days |
| 1979 | 115 days |
| 1980 | 75 days |
| 1981 | 190 days |
| 1982 | 77 days |
| 1983 | 104 days |
| 1984 | 56 days |
| 1985 | 99 days |
| 1986 | 170 days |
| 1987 | 138 days |
| 1988 | 103 days |
| 1989 | 129 days |
| 1990 | 112 days |
| 1991 | 72 days |
| 1992 | 80 days |
| 1993 | 117 days |
| 1994 | 114 days |
| 1995 | 136 days |
| 1996 | 122 days |
| 1997 | 92 days |
| 1998 | 98 days |
| 1999 | 163 days |
| 2000 | 104 days |
| 2001 | 191 days |
| 2002 | 157 days |
| 2003 | 81 days |
| 2004 | 204 days |
| 2005 | 58 days |
| 2006 | 143 days |
| 2007 | 117 days |
| 2008 | 67 days |
| 2009 | 74 days |
| 2010 | 69 days |
| 2011 | 54 days |
| 2012 | 204 days |
| 2013 | 174 days |
| 2014 | 207 days |
| 2015 | 84 days |
| 2016 | 177 days |
| 2017 | 86 days |
| 2018 | 179 days |
| 2019 | 182 days |
| 2020 | 172 days |
| 2021 | 227 days |
| 2022 | 148 days |
| 2023 | 98 days |
| 2024 | 93 days |
| 2025 | 85 days |
| 2026 | 53 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.
Rainfall Return Levels
59 years, 1959 to 2025A day with at least 46.2 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 102.5 mm (4.0 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 46.2 mm (1.8 in) | |
| 5 years | 63.0 mm (2.5 in) | |
| 10 years | 73.4 mm (2.9 in) | |
| 25 years | 85.7 mm (3.4 in) | |
| 50 years | 94.4 mm (3.7 in) | |
| 100 years | 102.5 mm (4.0 in) | Longer than the 59 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, 59 years of values from 1959 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: 98.6 mm (3.9 in) in 2018; 94.0 mm (3.7 in) in 2006; 92.7 mm (3.6 in) in 2010.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Morro Bay Fire Dept, at 1975 and 2006. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1975 ran 0.8 C (1.4 F) lower than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2006 ran 1.4 C (2.6 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1975 | -0.8 | -1.4 | likely | 5 |
| 2006 | +1.4 | +2.6 | likely | 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-15).