Palomar Mtn Obsy Weather Records (USC00046657)
Record envelope, standing records and threshold days for Palomar Mtn Obsy (USC00046657), California, United States, with 126 years of record.
Key Facts for Palomar Mtn Obsy
- Palomar Mtn Obsy (USC00046657) is a weather station in California, United States at 33.38 latitude and -116.84 longitude, 1,692 m (5,550 ft) above sea level.
- The station reports from 1901 to 2026, 126 years of record.
- 1,464 records set at Palomar Mtn Obsy still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Palomar Mtn Obsy set a daily record high minimum temperature of 23.9 C (75.0 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, 33.38 latitude, -116.84 longitude.
- Elevation: 1,692 m (5,550 ft).
- Period of record: 1901 to 2026, 126 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
12 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 27.8 C (82.0 F) | -13.3 C (8.1 F) | 19.4 C (66.9 F) | -3.3 C (26.1 F) |
| Feb | 25.0 C (77.0 F) | -11.1 C (12.0 F) | 23.9 C (75.0 F) | -3.9 C (25.0 F) |
| Mar | 28.3 C (82.9 F) | -8.9 C (16.0 F) | 28.3 C (82.9 F) | 2.2 C (36.0 F) |
| Apr | 28.3 C (82.9 F) | -7.2 C (19.0 F) | 21.1 C (70.0 F) | 0.0 C (32.0 F) |
| May | 32.8 C (91.0 F) | -4.4 C (24.1 F) | 28.3 C (82.9 F) | 0.6 C (33.1 F) |
| Jun | 37.2 C (99.0 F) | -2.2 C (28.0 F) | 29.4 C (84.9 F) | 7.8 C (46.0 F) |
| Jul | 37.8 C (100.0 F) | 2.2 C (36.0 F) | 33.3 C (91.9 F) | 12.2 C (54.0 F) |
| Aug | 37.8 C (100.0 F) | 2.2 C (36.0 F) | 34.4 C (93.9 F) | 14.4 C (57.9 F) |
| Sep | 37.8 C (100.0 F) | -1.1 C (30.0 F) | 27.8 C (82.0 F) | 10.0 C (50.0 F) |
| Oct | 36.1 C (97.0 F) | -7.8 C (18.0 F) | 29.4 C (84.9 F) | 16.7 C (62.1 F) |
| Nov | 26.7 C (80.1 F) | -8.3 C (17.1 F) | n/a | n/a |
| Dec | 26.7 C (80.1 F) | -13.3 C (8.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1940 | 15 |
| 1941 | 14 |
| 1942 | 12 |
| 1943 | 8 |
| 1944 | 16 |
| 1945 | 10 |
| 1946 | 14 |
| 1947 | 19 |
| 1948 | 19 |
| 1949 | 59 |
| 1950 | 28 |
| 1951 | 18 |
| 1952 | 14 |
| 1953 | 17 |
| 1954 | 15 |
| 1955 | 14 |
| 1956 | 12 |
| 1957 | 12 |
| 1958 | 21 |
| 1959 | 23 |
| 1960 | 7 |
| 1961 | 9 |
| 1962 | 24 |
| 1963 | 15 |
| 1964 | 20 |
| 1965 | 21 |
| 1966 | 13 |
| 1967 | 28 |
| 1968 | 13 |
| 1969 | 19 |
| 1970 | 24 |
| 1971 | 48 |
| 1972 | 51 |
| 1973 | 14 |
| 1974 | 9 |
| 1975 | 26 |
| 1976 | 25 |
| 1977 | 20 |
| 1978 | 20 |
| 1979 | 13 |
| 1980 | 15 |
| 1981 | 6 |
| 1982 | 11 |
| 1983 | 10 |
| 1984 | 7 |
| 1985 | 21 |
| 1986 | 11 |
| 1987 | 24 |
| 1988 | 20 |
| 1989 | 35 |
| 1990 | 23 |
| 1991 | 14 |
| 1992 | 5 |
| 1993 | 11 |
| 1994 | 20 |
| 1995 | 21 |
| 1996 | 17 |
| 1997 | 5 |
| 1998 | 11 |
| 1999 | 14 |
| 2000 | 23 |
| 2001 | 17 |
| 2002 | 11 |
| 2003 | 25 |
| 2004 | 12 |
| 2005 | 4 |
| 2006 | 8 |
| 2007 | 9 |
| 2008 | 7 |
| 2009 | 12 |
| 2010 | 14 |
| 2011 | 18 |
| 2012 | 6 |
| 2013 | 7 |
| 2014 | 8 |
| 2015 | 10 |
| 2016 | 12 |
| 2017 | 22 |
| 2018 | 10 |
| 2019 | 11 |
| 2020 | 42 |
| 2021 | 13 |
| 2022 | 11 |
| 2023 | 12 |
| 2024 | 18 |
| 2025 | 19 |
| 2026 | 23 |
All-Time Record Progression
9 new records| Date | Kind | Detail |
|---|---|---|
| 1974-01-03 | Record low maximum temperature | Record low maximum temperature -4.4 C (24.1 F) |
| 1978-08-10 | Record high minimum temperature | Record high minimum temperature 25.6 C (78.1 F) |
| 1982-03-18 | Record daily snowfall | Record daily snowfall 63.5 cm (25.0 in) |
| 1989-02-06 | Record low maximum temperature | Record low maximum temperature -5.0 C (23.0 F) |
| 1990-12-22 | Record low maximum temperature | Record low maximum temperature -5.6 C (21.9 F) |
| 1991-03-01 | Record daily precipitation | Record daily precipitation 243.3 mm (9.6 in) |
| 2008-12-17 | Record daily snowfall | Record daily snowfall 68.6 cm (27.0 in) |
| 2019-02-14 | Record daily precipitation | Record daily precipitation 256.5 mm (10.1 in) |
| 2020-09-06 | Record high minimum temperature | Record high minimum temperature 26.7 C (80.1 F) |
Wettest Day of Each Month
Feb: 256.5 mm (10.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 203.2 mm (8.0 in) | 25 January 1969 |
| Feb | 256.5 mm (10.1 in) | 14 February 2019 |
| Mar | 243.3 mm (9.6 in) | 1 March 1991 |
| Apr | 79.5 mm (3.1 in) | 1 April 1958 |
| May | 93.7 mm (3.7 in) | 9 May 1977 |
| Jun | 36.1 mm (1.4 in) | 6 June 1993 |
| Jul | 38.1 mm (1.5 in) | 19 July 1985 |
| Aug | 155.4 mm (6.1 in) | 14 August 1992 |
| Sep | 127.0 mm (5.0 in) | 11 September 1976 |
| Oct | 157.5 mm (6.2 in) | 20 October 2004 |
| Nov | 225.3 mm (8.9 in) | 23 November 1965 |
| Dec | 228.6 mm (9.0 in) | 17 December 2008 |
Period of Record Coverage
1940 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1940 | 331 | 90% | Yes |
| 1941 | 276 | 76% | No |
| 1942 | 319 | 87% | No |
| 1943 | 362 | 99% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 364 | 100% | Yes |
| 1946 | 364 | 100% | Yes |
| 1947 | 363 | 99% | Yes |
| 1948 | 328 | 90% | No |
| 1949 | 364 | 100% | Yes |
| 1950 | 360 | 99% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 357 | 98% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 362 | 99% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 364 | 99% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 331 | 91% | Yes |
| 1959 | 326 | 89% | No |
| 1960 | 328 | 90% | No |
| 1961 | 312 | 85% | No |
| 1962 | 365 | 100% | Yes |
| 1963 | 363 | 99% | Yes |
| 1964 | 321 | 88% | No |
| 1965 | 314 | 86% | No |
| 1966 | 318 | 87% | No |
| 1967 | 357 | 98% | Yes |
| 1968 | 349 | 95% | Yes |
| 1969 | 359 | 98% | Yes |
| 1970 | 360 | 99% | Yes |
| 1971 | 335 | 92% | Yes |
| 1972 | 332 | 91% | Yes |
| 1973 | 360 | 99% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 361 | 99% | Yes |
| 1977 | 363 | 99% | Yes |
| 1978 | 361 | 99% | Yes |
| 1979 | 359 | 98% | Yes |
| 1980 | 257 | 70% | No |
| 1981 | 353 | 97% | Yes |
| 1982 | 362 | 99% | Yes |
| 1983 | 362 | 99% | Yes |
| 1984 | 364 | 99% | Yes |
| 1985 | 362 | 99% | Yes |
| 1986 | 334 | 92% | Yes |
| 1987 | 362 | 99% | Yes |
| 1988 | 358 | 98% | Yes |
| 1989 | 360 | 99% | Yes |
| 1990 | 333 | 91% | Yes |
| 1991 | 360 | 99% | Yes |
| 1992 | 331 | 90% | Yes |
| 1993 | 358 | 98% | Yes |
| 1994 | 359 | 98% | Yes |
| 1995 | 360 | 99% | Yes |
| 1996 | 362 | 99% | Yes |
| 1997 | 353 | 97% | Yes |
| 1998 | 360 | 99% | Yes |
| 1999 | 360 | 99% | Yes |
| 2000 | 348 | 95% | Yes |
| 2001 | 346 | 95% | Yes |
| 2002 | 347 | 95% | Yes |
| 2003 | 327 | 90% | No |
| 2004 | 321 | 88% | No |
| 2005 | 302 | 83% | No |
| 2006 | 230 | 63% | No |
| 2007 | 240 | 66% | No |
| 2008 | 328 | 90% | No |
| 2009 | 314 | 86% | No |
| 2010 | 344 | 94% | Yes |
| 2011 | 353 | 97% | Yes |
| 2012 | 355 | 97% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 361 | 99% | Yes |
| 2016 | 350 | 96% | Yes |
| 2017 | 357 | 98% | Yes |
| 2018 | 354 | 97% | Yes |
| 2019 | 350 | 96% | Yes |
| 2020 | 312 | 85% | No |
| 2021 | 260 | 71% | No |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 364 | 100% | Yes |
| 2026 | 260 | 71% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 27 August 2026 | Palomar Mtn Obsy, US | daily high min (Provisional) | 23.9 C (75.0 F) | 1.7 C (3.1 F) | 44 years | 26 of 100 (Routine) |
| 20 August 2026 | Palomar Mtn Obsy, US | daily high min (Tie, Provisional) | 24.4 C (75.9 F) | tie | 5 years | 2 of 100 (Routine) |
| 19 August 2026 | Palomar Mtn Obsy, US | daily high max (Tie, Provisional) | 33.9 C (93.0 F) | tie | 5 years | 2 of 100 (Routine) |
| 3 August 2026 | Palomar Mtn Obsy, US | daily high min (Tie) | 22.8 C (73.0 F) | tie | 48 years | 5 of 100 (Routine) |
| 1 July 2026 | Palomar Mtn Obsy, US | daily low max | 21.7 C (71.1 F) | 0.5 C (0.9 F) | 71 years | 30 of 100 (Routine) |
| 30 June 2026 | Palomar Mtn Obsy, US | daily low max | 18.9 C (66.0 F) | 1.7 C (3.1 F) | 33 years | 21 of 100 (Routine) |
| 11 May 2026 | Palomar Mtn Obsy, US | daily high max (Tie) | 28.3 C (82.9 F) | tie | 65 years | 6 of 100 (Routine) |
| 10 May 2026 | Palomar Mtn Obsy, US | daily high max (Tie) | 27.2 C (81.0 F) | tie | 84 years | 8 of 100 (Routine) |
| 30 March 2026 | Palomar Mtn Obsy, US | daily high min (Tie) | 12.2 C (54.0 F) | tie | 21 years | 3 of 100 (Routine) |
| 29 March 2026 | Palomar Mtn Obsy, US | daily high min | 15.6 C (60.1 F) | 2.8 C (5.0 F) | 11 years | 17 of 100 (Routine) |
| 28 March 2026 | Palomar Mtn Obsy, US | daily high min | 15.0 C (59.0 F) | 2.8 C (5.0 F) | 11 years | 17 of 100 (Routine) |
| 27 March 2026 | Palomar Mtn Obsy, US | daily high min | 15.6 C (60.1 F) | 2.3 C (4.1 F) | 11 years | 16 of 100 (Routine) |
| 26 March 2026 | Palomar Mtn Obsy, US | daily high max | 24.4 C (75.9 F) | 1.6 C (2.9 F) | 37 years | 21 of 100 (Routine) |
| 25 March 2026 | Palomar Mtn Obsy, US | daily high min | 14.4 C (57.9 F) | 2.2 C (4.0 F) | 4 years | 13 of 100 (Routine) |
| 24 March 2026 | Palomar Mtn Obsy, US | daily high min | 15.6 C (60.1 F) | 2.3 C (4.1 F) | 85 years | 38 of 100 (Notable) |
| 24 March 2026 | Palomar Mtn Obsy, US | daily high max | 24.4 C (75.9 F) | 1.1 C (2.0 F) | 53 years | 25 of 100 (Routine) |
| 23 March 2026 | Palomar Mtn Obsy, US | daily high max | 26.1 C (79.0 F) | 2.8 C (5.0 F) | 53 years | 29 of 100 (Routine) |
| 23 March 2026 | Palomar Mtn Obsy, US | daily high min | 15.6 C (60.1 F) | 2.8 C (5.0 F) | 21 years | 20 of 100 (Routine) |
| 20 March 2026 | Palomar Mtn Obsy, US | daily high min | 17.2 C (63.0 F) | 4.4 C (7.9 F) | 28 years | 25 of 100 (Routine) |
| 20 March 2026 | Palomar Mtn Obsy, US | monthly high max (Tie) | 28.3 C (82.9 F) | tie | 0 years | 4 of 100 (Routine) |
Climate Trend
63 complete years, 1943 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1943 | 13.6 C | +0.05 C |
| 1944 | 11.9 C | -1.59 C |
| 1945 | 12.8 C | -0.72 C |
| 1946 | 13.2 C | -0.29 C |
| 1947 | 13.4 C | -0.11 C |
| 1948 | 13.1 C | -0.44 C |
| 1949 | 12.6 C | -0.98 C |
| 1950 | 14.5 C | +0.95 C |
| 1951 | 13.2 C | -0.36 C |
| 1952 | 12.8 C | -0.69 C |
| 1953 | 13.6 C | +0.09 C |
| 1954 | 14.3 C | +0.81 C |
| 1955 | 13.0 C | -0.57 C |
| 1956 | 13.7 C | +0.13 C |
| 1957 | 12.8 C | -0.74 C |
| 1959 | 14.6 C | +1.09 C |
| 1960 | 13.9 C | +0.34 C |
| 1962 | 13.5 C | 0.00 C |
| 1963 | 13.2 C | -0.32 C |
| 1967 | 13.3 C | -0.20 C |
| 1968 | 13.7 C | +0.16 C |
| 1969 | 13.4 C | -0.18 C |
| 1970 | 13.9 C | +0.33 C |
| 1973 | 12.7 C | -0.88 C |
| 1974 | 13.0 C | -0.56 C |
| 1975 | 12.4 C | -1.15 C |
| 1976 | 12.5 C | -1.06 C |
| 1979 | 12.5 C | -1.02 C |
| 1981 | 14.8 C | +1.25 C |
| 1982 | 12.6 C | -0.92 C |
| 1983 | 12.7 C | -0.79 C |
| 1984 | 13.4 C | -0.11 C |
| 1985 | 13.1 C | -0.45 C |
| 1987 | 12.5 C | -1.00 C |
| 1988 | 13.4 C | -0.11 C |
| 1989 | 13.8 C | +0.29 C |
| 1991 | 12.7 C | -0.87 C |
| 1993 | 12.8 C | -0.73 C |
| 1994 | 13.2 C | -0.34 C |
| 1995 | 13.5 C | -0.08 C |
| 1996 | 14.2 C | +0.64 C |
| 1997 | 13.9 C | +0.37 C |
| 1998 | 11.8 C | -1.78 C |
| 1999 | 13.8 C | +0.22 C |
| 2000 | 14.7 C | +1.20 C |
| 2001 | 13.7 C | +0.15 C |
| 2002 | 14.2 C | +0.67 C |
| 2003 | 14.4 C | +0.91 C |
| 2008 | 14.4 C | +0.90 C |
| 2010 | 13.2 C | -0.31 C |
| 2011 | 13.2 C | -0.32 C |
| 2012 | 14.5 C | +0.99 C |
| 2013 | 14.1 C | +0.53 C |
| 2014 | 15.2 C | +1.63 C |
| 2015 | 14.5 C | +0.92 C |
| 2016 | 14.9 C | +1.34 C |
| 2017 | 15.1 C | +1.58 C |
| 2018 | 14.5 C | +1.00 C |
| 2019 | 13.1 C | -0.42 C |
| 2022 | 14.4 C | +0.90 C |
| 2023 | 12.5 C | -1.00 C |
| 2024 | 14.4 C | +0.88 C |
| 2025 | 14.4 C | +0.90 C |
The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1943 to 2025. In Fahrenheit: 0.2 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 63 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 0.2) per decade | 0.2 F (0.1 to 0.4) per decade | 1943 to 2025 | 63 | Rise |
| Mean daily maximum | -0.05 C (-0.15 to 0.04) per decade | -0.1 F (-0.3 to 0.1) per decade | 1943 to 2025 | 63 | Not clearly different from zero |
| Mean daily minimum | 0.3 C (0.2 to 0.4) per decade | 0.6 F (0.4 to 0.7) per decade | 1943 to 2025 | 63 | 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
1901 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 37.8 C (100.0 F) | 1942 | 34.4 C (93.9 F) | 87 |
| Coldest night (TNn) | -13.3 C (8.1 F) | 1947 | -7.2 C (19.0 F) | 87 |
| Wettest day (Rx1day) | 256.5 mm (10.1 in) | 2019 | 88.1 mm (3.5 in) | 90 |
| Wettest five days (Rx5day) | 602.8 mm (23.7 in) | 1966 | 151.6 mm (6.0 in) | 90 |
| Longest dry spell (CDD) | 184 days | 1962 | 87 days | 90 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1901 | n/a |
| 1938 | n/a |
| 1939 | n/a |
| 1940 | 32.8 C (91.0 F) |
| 1941 | 30.6 C (87.1 F) |
| 1942 | 37.8 C (100.0 F) |
| 1943 | 32.8 C (91.0 F) |
| 1944 | 35.0 C (95.0 F) |
| 1945 | 35.0 C (95.0 F) |
| 1946 | 32.2 C (90.0 F) |
| 1947 | 32.8 C (91.0 F) |
| 1948 | 33.9 C (93.0 F) |
| 1949 | 32.8 C (91.0 F) |
| 1950 | 36.1 C (97.0 F) |
| 1951 | 32.8 C (91.0 F) |
| 1952 | 32.2 C (90.0 F) |
| 1953 | 33.3 C (91.9 F) |
| 1954 | 32.8 C (91.0 F) |
| 1955 | 35.6 C (96.1 F) |
| 1956 | 32.8 C (91.0 F) |
| 1957 | 33.9 C (93.0 F) |
| 1958 | 33.9 C (93.0 F) |
| 1959 | 34.4 C (93.9 F) |
| 1960 | 35.0 C (95.0 F) |
| 1961 | 35.0 C (95.0 F) |
| 1962 | 33.3 C (91.9 F) |
| 1963 | 33.9 C (93.0 F) |
| 1964 | 33.3 C (91.9 F) |
| 1965 | 32.2 C (90.0 F) |
| 1966 | 34.4 C (93.9 F) |
| 1967 | 34.4 C (93.9 F) |
| 1968 | 35.0 C (95.0 F) |
| 1969 | 35.6 C (96.1 F) |
| 1970 | 37.8 C (100.0 F) |
| 1971 | 37.8 C (100.0 F) |
| 1972 | 37.8 C (100.0 F) |
| 1973 | 36.1 C (97.0 F) |
| 1974 | 34.4 C (93.9 F) |
| 1975 | 35.0 C (95.0 F) |
| 1976 | 35.0 C (95.0 F) |
| 1977 | 32.8 C (91.0 F) |
| 1978 | 34.4 C (93.9 F) |
| 1979 | 35.0 C (95.0 F) |
| 1980 | 33.3 C (91.9 F) |
| 1981 | 35.0 C (95.0 F) |
| 1982 | 33.3 C (91.9 F) |
| 1983 | 33.9 C (93.0 F) |
| 1984 | 34.4 C (93.9 F) |
| 1985 | 34.4 C (93.9 F) |
| 1986 | 34.4 C (93.9 F) |
| 1987 | 32.8 C (91.0 F) |
| 1988 | 32.8 C (91.0 F) |
| 1989 | 35.6 C (96.1 F) |
| 1990 | 33.9 C (93.0 F) |
| 1991 | 34.4 C (93.9 F) |
| 1992 | 31.7 C (89.1 F) |
| 1993 | 33.3 C (91.9 F) |
| 1994 | 36.7 C (98.1 F) |
| 1995 | 36.7 C (98.1 F) |
| 1996 | 34.4 C (93.9 F) |
| 1997 | 37.2 C (99.0 F) |
| 1998 | 35.0 C (95.0 F) |
| 1999 | 32.8 C (91.0 F) |
| 2000 | 35.0 C (95.0 F) |
| 2001 | 33.9 C (93.0 F) |
| 2002 | 35.6 C (96.1 F) |
| 2003 | 36.1 C (97.0 F) |
| 2004 | 33.9 C (93.0 F) |
| 2005 | 33.9 C (93.0 F) |
| 2006 | 33.3 C (91.9 F) |
| 2007 | 36.1 C (97.0 F) |
| 2008 | 32.8 C (91.0 F) |
| 2009 | 33.3 C (91.9 F) |
| 2010 | 33.3 C (91.9 F) |
| 2011 | 33.3 C (91.9 F) |
| 2012 | 33.3 C (91.9 F) |
| 2013 | 35.6 C (96.1 F) |
| 2014 | 34.4 C (93.9 F) |
| 2015 | 33.3 C (91.9 F) |
| 2016 | 35.6 C (96.1 F) |
| 2017 | 35.0 C (95.0 F) |
| 2018 | 35.6 C (96.1 F) |
| 2019 | 32.8 C (91.0 F) |
| 2020 | 36.7 C (98.1 F) |
| 2021 | 36.7 C (98.1 F) |
| 2022 | 35.0 C (95.0 F) |
| 2023 | 33.9 C (93.0 F) |
| 2024 | 36.1 C (97.0 F) |
| 2025 | 33.9 C (93.0 F) |
| 2026 | 34.4 C (93.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1901 | n/a |
| 1938 | n/a |
| 1939 | n/a |
| 1940 | -3.9 C (25.0 F) |
| 1941 | -6.1 C (21.0 F) |
| 1942 | -8.3 C (17.1 F) |
| 1943 | -5.0 C (23.0 F) |
| 1944 | -7.2 C (19.0 F) |
| 1945 | -7.2 C (19.0 F) |
| 1946 | -7.8 C (18.0 F) |
| 1947 | -13.3 C (8.1 F) |
| 1948 | -8.9 C (16.0 F) |
| 1949 | -13.3 C (8.1 F) |
| 1950 | -10.0 C (14.0 F) |
| 1951 | -12.2 C (10.0 F) |
| 1952 | -8.9 C (16.0 F) |
| 1953 | -7.8 C (18.0 F) |
| 1954 | -6.7 C (19.9 F) |
| 1955 | -7.8 C (18.0 F) |
| 1956 | -8.9 C (16.0 F) |
| 1957 | -7.8 C (18.0 F) |
| 1958 | -8.3 C (17.1 F) |
| 1959 | -7.8 C (18.0 F) |
| 1960 | -9.4 C (15.1 F) |
| 1961 | -6.7 C (19.9 F) |
| 1962 | -9.4 C (15.1 F) |
| 1963 | -10.6 C (12.9 F) |
| 1964 | -8.3 C (17.1 F) |
| 1965 | -7.2 C (19.0 F) |
| 1966 | -8.9 C (16.0 F) |
| 1967 | -12.2 C (10.0 F) |
| 1968 | -11.7 C (10.9 F) |
| 1969 | -8.9 C (16.0 F) |
| 1970 | -6.7 C (19.9 F) |
| 1971 | -11.7 C (10.9 F) |
| 1972 | -11.1 C (12.0 F) |
| 1973 | -10.0 C (14.0 F) |
| 1974 | -9.4 C (15.1 F) |
| 1975 | -8.3 C (17.1 F) |
| 1976 | -7.8 C (18.0 F) |
| 1977 | -6.7 C (19.9 F) |
| 1978 | -11.7 C (10.9 F) |
| 1979 | -10.0 C (14.0 F) |
| 1980 | -6.7 C (19.9 F) |
| 1981 | -6.7 C (19.9 F) |
| 1982 | -7.2 C (19.0 F) |
| 1983 | -11.1 C (12.0 F) |
| 1984 | -11.1 C (12.0 F) |
| 1985 | -9.4 C (15.1 F) |
| 1986 | -3.3 C (26.1 F) |
| 1987 | -10.0 C (14.0 F) |
| 1988 | -8.3 C (17.1 F) |
| 1989 | -11.1 C (12.0 F) |
| 1990 | -11.7 C (10.9 F) |
| 1991 | -6.7 C (19.9 F) |
| 1992 | -7.2 C (19.0 F) |
| 1993 | -6.1 C (21.0 F) |
| 1994 | -7.2 C (19.0 F) |
| 1995 | -5.0 C (23.0 F) |
| 1996 | -9.4 C (15.1 F) |
| 1997 | -6.7 C (19.9 F) |
| 1998 | -6.7 C (19.9 F) |
| 1999 | -7.2 C (19.0 F) |
| 2000 | -6.1 C (21.0 F) |
| 2001 | -7.2 C (19.0 F) |
| 2002 | -8.9 C (16.0 F) |
| 2003 | -5.6 C (21.9 F) |
| 2004 | -6.1 C (21.0 F) |
| 2005 | -4.4 C (24.1 F) |
| 2006 | -6.7 C (19.9 F) |
| 2007 | -7.2 C (19.0 F) |
| 2008 | -6.7 C (19.9 F) |
| 2009 | -7.2 C (19.0 F) |
| 2010 | -6.7 C (19.9 F) |
| 2011 | -7.2 C (19.0 F) |
| 2012 | -6.7 C (19.9 F) |
| 2013 | -7.8 C (18.0 F) |
| 2014 | -7.2 C (19.0 F) |
| 2015 | -7.8 C (18.0 F) |
| 2016 | -6.1 C (21.0 F) |
| 2017 | -4.4 C (24.1 F) |
| 2018 | -7.2 C (19.0 F) |
| 2019 | -7.2 C (19.0 F) |
| 2020 | -6.1 C (21.0 F) |
| 2021 | -5.0 C (23.0 F) |
| 2022 | -9.4 C (15.1 F) |
| 2023 | -8.3 C (17.1 F) |
| 2024 | -5.6 C (21.9 F) |
| 2025 | -4.4 C (24.1 F) |
| 2026 | -3.9 C (25.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1901 | 84.1 mm (3.3 in) |
| 1938 | 85.9 mm (3.4 in) |
| 1939 | 111.8 mm (4.4 in) |
| 1940 | 139.7 mm (5.5 in) |
| 1941 | 81.5 mm (3.2 in) |
| 1942 | 64.3 mm (2.5 in) |
| 1943 | 146.1 mm (5.8 in) |
| 1944 | 90.2 mm (3.6 in) |
| 1945 | 167.9 mm (6.6 in) |
| 1946 | 81.8 mm (3.2 in) |
| 1947 | 67.3 mm (2.6 in) |
| 1948 | 140.5 mm (5.5 in) |
| 1949 | 80.0 mm (3.1 in) |
| 1950 | 41.9 mm (1.6 in) |
| 1951 | 135.9 mm (5.4 in) |
| 1952 | 88.6 mm (3.5 in) |
| 1953 | 81.8 mm (3.2 in) |
| 1954 | 77.5 mm (3.1 in) |
| 1955 | 43.9 mm (1.7 in) |
| 1956 | 86.4 mm (3.4 in) |
| 1957 | 70.6 mm (2.8 in) |
| 1958 | 79.5 mm (3.1 in) |
| 1959 | 94.7 mm (3.7 in) |
| 1960 | 60.5 mm (2.4 in) |
| 1961 | 63.2 mm (2.5 in) |
| 1962 | 67.3 mm (2.6 in) |
| 1963 | 59.7 mm (2.4 in) |
| 1964 | 87.6 mm (3.4 in) |
| 1965 | 225.3 mm (8.9 in) |
| 1966 | 201.2 mm (7.9 in) |
| 1967 | 78.5 mm (3.1 in) |
| 1968 | 91.7 mm (3.6 in) |
| 1969 | 203.2 mm (8.0 in) |
| 1970 | 128.5 mm (5.1 in) |
| 1971 | 68.1 mm (2.7 in) |
| 1972 | 93.5 mm (3.7 in) |
| 1973 | 66.8 mm (2.6 in) |
| 1974 | 93.0 mm (3.7 in) |
| 1975 | 71.1 mm (2.8 in) |
| 1976 | 127.0 mm (5.0 in) |
| 1977 | 93.7 mm (3.7 in) |
| 1978 | 144.0 mm (5.7 in) |
| 1979 | 134.6 mm (5.3 in) |
| 1980 | 143.5 mm (5.6 in) |
| 1981 | 68.6 mm (2.7 in) |
| 1982 | 76.2 mm (3.0 in) |
| 1983 | 101.6 mm (4.0 in) |
| 1984 | 76.2 mm (3.0 in) |
| 1985 | 68.6 mm (2.7 in) |
| 1986 | 57.4 mm (2.3 in) |
| 1987 | 85.6 mm (3.4 in) |
| 1988 | 53.3 mm (2.1 in) |
| 1989 | 54.6 mm (2.1 in) |
| 1990 | 51.3 mm (2.0 in) |
| 1991 | 243.3 mm (9.6 in) |
| 1992 | 155.4 mm (6.1 in) |
| 1993 | 138.9 mm (5.5 in) |
| 1994 | 83.8 mm (3.3 in) |
| 1995 | 203.2 mm (8.0 in) |
| 1996 | 123.4 mm (4.9 in) |
| 1997 | 38.9 mm (1.5 in) |
| 1998 | 84.6 mm (3.3 in) |
| 1999 | 33.5 mm (1.3 in) |
| 2000 | 61.5 mm (2.4 in) |
| 2001 | 34.8 mm (1.4 in) |
| 2002 | 108.2 mm (4.3 in) |
| 2003 | 118.9 mm (4.7 in) |
| 2004 | 157.5 mm (6.2 in) |
| 2005 | 127.8 mm (5.0 in) |
| 2006 | 126.2 mm (5.0 in) |
| 2007 | 41.7 mm (1.6 in) |
| 2008 | 228.6 mm (9.0 in) |
| 2009 | 118.4 mm (4.7 in) |
| 2010 | 190.5 mm (7.5 in) |
| 2011 | 69.8 mm (2.7 in) |
| 2012 | 50.8 mm (2.0 in) |
| 2013 | 57.2 mm (2.3 in) |
| 2014 | 111.8 mm (4.4 in) |
| 2015 | 52.1 mm (2.1 in) |
| 2016 | 132.1 mm (5.2 in) |
| 2017 | 135.4 mm (5.3 in) |
| 2018 | 96.5 mm (3.8 in) |
| 2019 | 256.5 mm (10.1 in) |
| 2020 | 60.5 mm (2.4 in) |
| 2021 | 108.2 mm (4.3 in) |
| 2022 | 100.6 mm (4.0 in) |
| 2023 | 137.2 mm (5.4 in) |
| 2024 | 69.1 mm (2.7 in) |
| 2025 | 99.6 mm (3.9 in) |
| 2026 | 107.2 mm (4.2 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1901 | 225.6 mm (8.9 in) |
| 1938 | 198.0 mm (7.8 in) |
| 1939 | 178.0 mm (7.0 in) |
| 1940 | 194.3 mm (7.6 in) |
| 1941 | 105.4 mm (4.1 in) |
| 1942 | 65.3 mm (2.6 in) |
| 1943 | 272.1 mm (10.7 in) |
| 1944 | 176.9 mm (7.0 in) |
| 1945 | 285.8 mm (11.3 in) |
| 1946 | 141.5 mm (5.6 in) |
| 1947 | 113.8 mm (4.5 in) |
| 1948 | 179.3 mm (7.1 in) |
| 1949 | 265.8 mm (10.5 in) |
| 1950 | 53.4 mm (2.1 in) |
| 1951 | 203.4 mm (8.0 in) |
| 1952 | 235.0 mm (9.3 in) |
| 1953 | 84.8 mm (3.3 in) |
| 1954 | 227.0 mm (8.9 in) |
| 1955 | 61.7 mm (2.4 in) |
| 1956 | 171.0 mm (6.7 in) |
| 1957 | 108.2 mm (4.3 in) |
| 1958 | 171.9 mm (6.8 in) |
| 1959 | 105.1 mm (4.1 in) |
| 1960 | 70.9 mm (2.8 in) |
| 1961 | 73.4 mm (2.9 in) |
| 1962 | 93.9 mm (3.7 in) |
| 1963 | 98.4 mm (3.9 in) |
| 1964 | 165.1 mm (6.5 in) |
| 1965 | 393.5 mm (15.5 in) |
| 1966 | 602.8 mm (23.7 in) |
| 1967 | 148.2 mm (5.8 in) |
| 1968 | 104.6 mm (4.1 in) |
| 1969 | 434.3 mm (17.1 in) |
| 1970 | 231.6 mm (9.1 in) |
| 1971 | 167.4 mm (6.6 in) |
| 1972 | 131.8 mm (5.2 in) |
| 1973 | 130.3 mm (5.1 in) |
| 1974 | 102.7 mm (4.0 in) |
| 1975 | 157.7 mm (6.2 in) |
| 1976 | 241.7 mm (9.5 in) |
| 1977 | 149.5 mm (5.9 in) |
| 1978 | 316.6 mm (12.5 in) |
| 1979 | 175.3 mm (6.9 in) |
| 1980 | 327.9 mm (12.9 in) |
| 1981 | 94.0 mm (3.7 in) |
| 1982 | 141.0 mm (5.6 in) |
| 1983 | 215.9 mm (8.5 in) |
| 1984 | 114.3 mm (4.5 in) |
| 1985 | 76.2 mm (3.0 in) |
| 1986 | 78.7 mm (3.1 in) |
| 1987 | 110.5 mm (4.4 in) |
| 1988 | 67.7 mm (2.7 in) |
| 1989 | 57.1 mm (2.2 in) |
| 1990 | 91.5 mm (3.6 in) |
| 1991 | 444.0 mm (17.5 in) |
| 1992 | 164.3 mm (6.5 in) |
| 1993 | 441.6 mm (17.4 in) |
| 1994 | 241.3 mm (9.5 in) |
| 1995 | 299.2 mm (11.8 in) |
| 1996 | 206.0 mm (8.1 in) |
| 1997 | 99.6 mm (3.9 in) |
| 1998 | 143.0 mm (5.6 in) |
| 1999 | 48.2 mm (1.9 in) |
| 2000 | 135.6 mm (5.3 in) |
| 2001 | 108.7 mm (4.3 in) |
| 2002 | 144.7 mm (5.7 in) |
| 2003 | 152.4 mm (6.0 in) |
| 2004 | 282.4 mm (11.1 in) |
| 2005 | 383.4 mm (15.1 in) |
| 2006 | 132.9 mm (5.2 in) |
| 2007 | 63.8 mm (2.5 in) |
| 2008 | 310.1 mm (12.2 in) |
| 2009 | 158.3 mm (6.2 in) |
| 2010 | 473.0 mm (18.6 in) |
| 2011 | 121.2 mm (4.8 in) |
| 2012 | 98.3 mm (3.9 in) |
| 2013 | 77.5 mm (3.1 in) |
| 2014 | 223.6 mm (8.8 in) |
| 2015 | 68.1 mm (2.7 in) |
| 2016 | 132.1 mm (5.2 in) |
| 2017 | 217.2 mm (8.6 in) |
| 2018 | 134.6 mm (5.3 in) |
| 2019 | 280.1 mm (11.0 in) |
| 2020 | 156.5 mm (6.2 in) |
| 2021 | 119.6 mm (4.7 in) |
| 2022 | 173.8 mm (6.8 in) |
| 2023 | 304.2 mm (12.0 in) |
| 2024 | 150.7 mm (5.9 in) |
| 2025 | 116.1 mm (4.6 in) |
| 2026 | 167.4 mm (6.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1901 | 33 days |
| 1938 | 60 days |
| 1939 | 45 days |
| 1940 | 38 days |
| 1941 | 31 days |
| 1942 | 41 days |
| 1943 | 163 days |
| 1944 | 143 days |
| 1945 | 112 days |
| 1946 | 94 days |
| 1947 | 71 days |
| 1948 | 85 days |
| 1949 | 141 days |
| 1950 | 98 days |
| 1951 | 71 days |
| 1952 | 77 days |
| 1953 | 101 days |
| 1954 | 73 days |
| 1955 | 88 days |
| 1956 | 93 days |
| 1957 | 92 days |
| 1958 | 93 days |
| 1959 | 76 days |
| 1960 | 27 days |
| 1961 | 39 days |
| 1962 | 184 days |
| 1963 | 103 days |
| 1964 | 55 days |
| 1965 | 78 days |
| 1966 | 101 days |
| 1967 | 61 days |
| 1968 | 53 days |
| 1969 | 163 days |
| 1970 | 104 days |
| 1971 | 65 days |
| 1972 | 112 days |
| 1973 | 127 days |
| 1974 | 108 days |
| 1975 | 109 days |
| 1976 | 79 days |
| 1977 | 115 days |
| 1978 | 127 days |
| 1979 | 61 days |
| 1980 | 74 days |
| 1981 | 77 days |
| 1982 | 114 days |
| 1983 | 97 days |
| 1984 | 69 days |
| 1985 | 86 days |
| 1986 | 99 days |
| 1987 | 119 days |
| 1988 | 71 days |
| 1989 | 128 days |
| 1990 | 59 days |
| 1991 | 50 days |
| 1992 | 69 days |
| 1993 | 126 days |
| 1994 | 86 days |
| 1995 | 108 days |
| 1996 | 99 days |
| 1997 | 93 days |
| 1998 | 56 days |
| 1999 | 70 days |
| 2000 | 99 days |
| 2001 | 120 days |
| 2002 | 131 days |
| 2003 | 84 days |
| 2004 | 63 days |
| 2005 | 73 days |
| 2006 | 55 days |
| 2007 | 97 days |
| 2008 | 133 days |
| 2009 | 163 days |
| 2010 | 75 days |
| 2011 | 36 days |
| 2012 | 106 days |
| 2013 | 64 days |
| 2014 | 68 days |
| 2015 | 56 days |
| 2016 | 134 days |
| 2017 | 113 days |
| 2018 | 105 days |
| 2019 | 94 days |
| 2020 | 72 days |
| 2021 | 82 days |
| 2022 | 103 days |
| 2023 | 70 days |
| 2024 | 176 days |
| 2025 | 84 days |
| 2026 | 97 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
63 years with a frostAcross 63 years with a frost, the median last spring frost at Palomar Mtn Obsy falls on 14 May and the median first autumn frost on 6 November, which leaves a median of 175 days between them.
In 1987 to 2025 the median growing season was 190 days. That is 27 days more than in 1943 to 1982.
Fitted over all years, the growing season changes by +5.5 days per decade at this station.
| Measure | Median, all years | Earliest period (1943 to 1982) | Recent period (1987 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 14 May | 20 May | 10 May | 10 days earlier | -2.5 days per decade |
| First autumn frost | 6 November | 30 October | 15 November | 16 days later | +3.0 days per decade |
| Growing days | 175 days | 163 days | 190 days | 27 days more | +5.5 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
79 years, 1943 to 2025A day with at least 90.8 mm (3.6 in) of rain is expected about once in 2 years. A day with at least 294.6 mm (11.6 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 90.8 mm (3.6 in) | |
| 5 years | 135.4 mm (5.3 in) | |
| 10 years | 168.6 mm (6.6 in) | |
| 25 years | 215.1 mm (8.5 in) | |
| 50 years | 253.3 mm (10.0 in) | |
| 100 years | 294.6 mm (11.6 in) | Longer than the 79 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, 79 years of values from 1943 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: 256.5 mm (10.1 in) in 2019; 243.3 mm (9.6 in) in 1991; 228.6 mm (9.0 in) in 2008.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Palomar Mtn Obsy, at 1973. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1973 ran 0.5 C (0.9 F) lower than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1973 | -0.5 | -0.9 | 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.
Climate Twins
2008 to 2025 against 1961 to 1990Over 2008 to 2025, Palomar Mtn Obsy had a mean temperature of 14.2 C (57.5 F) and 728.0 mm (28.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Girona/Costa Brava (Spain, 9,622 km away), Lakeport (United States, 832 km away) and Montpellier-Aeroport (France, 9,565 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Girona/Costa Brava | Spain | 9,622 km (5,979 mi) | 14.1 C (57.4 F) | 714.2 mm (28.1 in) | 0.80 |
| Lakeport | United States | 832 km (517 mi) | 14.1 C (57.4 F) | 777.2 mm (30.6 in) | 1.01 |
| Montpellier-Aeroport | France | 9,565 km (5,943 mi) | 14.2 C (57.5 F) | 699.1 mm (27.5 in) | 1.03 |
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).