Occidental Weather Records (USC00046370)

Record envelope, standing records and threshold days for Occidental (USC00046370), California, United States, with 79 years of record.

Key Facts for Occidental

Occidental (USC00046370) is a weather station in California, United States at 38.39 latitude and -122.97 longitude, 264 m (865 ft) above sea level.
The station reports from 1943 to 2021, 79 years of record.
1,464 records set at Occidental still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Occidental set a daily record precipitation of 0.5 mm (0.02 in) on 24 August 2020.

About the Station

Location: California, United States, 38.39 latitude, -122.97 longitude.
Elevation: 264 m (865 ft).
Period of record: 1943 to 2021, 79 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Occidental. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Occidental, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	26.7 C (80.1 F)	-2.2 C (28.0 F)	n/a	n/a
Feb	26.1 C (79.0 F)	-2.8 C (27.0 F)	n/a	n/a
Mar	29.4 C (84.9 F)	-2.2 C (28.0 F)	n/a	n/a
Apr	32.8 C (91.0 F)	0.0 C (32.0 F)	n/a	n/a
May	36.7 C (98.1 F)	2.2 C (36.0 F)	n/a	n/a
Jun	38.3 C (100.9 F)	4.4 C (39.9 F)	n/a	n/a
Jul	39.4 C (102.9 F)	6.1 C (43.0 F)	n/a	n/a
Aug	37.2 C (99.0 F)	6.7 C (44.1 F)	n/a	n/a
Sep	40.6 C (105.1 F)	5.0 C (41.0 F)	n/a	n/a
Oct	36.1 C (97.0 F)	3.3 C (37.9 F)	n/a	n/a
Nov	28.3 C (82.9 F)	-1.7 C (28.9 F)	n/a	n/a
Dec	23.3 C (73.9 F)	-3.3 C (26.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Occidental still stand. 2020 holds the most, with 123.

Standing records at Occidental by the year they were set
Year set	Standing records
1999	98
2000	112
2001	93
2002	55
2003	55
2004	51
2005	31
2006	101
2007	48
2008	55
2009	111
2010	30
2011	62
2012	50
2013	95
2014	58
2015	36
2016	35
2017	42
2018	47
2019	66
2020	123
2021	10

All-Time Record Progression

1 new records

1 all-time records were set at Occidental between 28 January 2002 and 28 January 2002. Each dot is a new record.

Wettest Day of Each Month

Jan: 216.2 mm (8.5 in)

The wettest day on record for each calendar month at Occidental. The most was 216.2 mm (8.5 in) on 5 January 1966.

Record daily precipitation for each month at Occidental
Month	Record daily precipitation (mm)	Date
Jan	216.2 mm (8.5 in)	5 January 1966
Feb	179.3 mm (7.1 in)	8 February 2014
Mar	188.0 mm (7.4 in)	9 March 1995
Apr	147.3 mm (5.8 in)	6 April 2018
May	84.3 mm (3.3 in)	29 May 1998
Jun	75.4 mm (3.0 in)	25 June 2013
Jul	41.9 mm (1.6 in)	8 July 1974
Aug	92.5 mm (3.6 in)	28 August 1954
Sep	102.1 mm (4.0 in)	18 September 1959
Oct	165.9 mm (6.5 in)	24 October 2010
Nov	137.4 mm (5.4 in)	30 November 2012
Dec	198.6 mm (7.8 in)	12 December 1995

Period of Record Coverage

1999 to 2021

23 years of record at Occidental, 1999 to 2021. 19 years have data for under 90 percent of days and are left out of rankings: 1999, 2002, 2003, 2004, 2005, 2006, 2007, 2008 and others.

Days with data per year at Occidental
Year	Days with data	Share of year	Complete
1999	234	64%	No
2000	355	97%	Yes
2001	346	95%	Yes
2002	217	59%	No
2003	225	62%	No
2004	214	58%	No
2005	253	69%	No
2006	287	79%	No
2007	242	66%	No
2008	222	61%	No
2009	327	90%	No
2010	231	63%	No
2011	235	64%	No
2012	224	61%	No
2013	356	98%	Yes
2014	243	67%	No
2015	250	68%	No
2016	240	66%	No
2017	260	71%	No
2018	242	66%	No
2019	239	65%	No
2020	352	96%	Yes
2021	76	21%	No

Latest Records

Latest records at Occidental
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 August 2020	Occidental, US	daily rain	0.5 mm (0.02 in)	0.5 mm (0.02 in)	77 years	20 of 100 (Routine)
16 August 2020	Occidental, US	daily rain (Tie)	1.3 mm (0.05 in)	tie	44 years	5 of 100 (Routine)
11 May 2020	Occidental, US	daily rain	13.0 mm (0.5 in)	7.9 mm (0.31 in)	57 years	20 of 100 (Routine)
19 May 2019	Occidental, US	daily rain	33.5 mm (1.3 in)	14.4 mm (0.6 in)	25 years	24 of 100 (Routine)
15 May 2019	Occidental, US	daily rain	30.0 mm (1.2 in)	7.1 mm (0.28 in)	18 years	17 of 100 (Routine)
26 February 2019	Occidental, US	daily rain	173.5 mm (6.8 in)	115.8 mm (4.6 in)	19 years	52 of 100 (Notable)
5 February 2019	Occidental, US	monthly snowfall	1.3 cm (0.5 in)	1.3 cm (0.5 in)	70 years	20 of 100 (Routine)
23 November 2018	Occidental, US	daily rain	103.1 mm (4.1 in)	30.7 mm (1.2 in)	20 years	27 of 100 (Routine)
2 October 2018	Occidental, US	daily rain	45.5 mm (1.8 in)	9.2 mm (0.36 in)	67 years	30 of 100 (Routine)
6 April 2018	Occidental, US	monthly rain	147.3 mm (5.8 in)	15.2 mm (0.6 in)	64 years	45 of 100 (Notable)
21 March 2018	Occidental, US	daily rain	64.0 mm (2.5 in)	17.3 mm (0.7 in)	60 years	34 of 100 (Routine)
13 April 2017	Occidental, US	daily rain	24.6 mm (1.0 in)	5.5 mm (0.22 in)	16 years	15 of 100 (Routine)
15 December 2016	Occidental, US	daily rain	91.2 mm (3.6 in)	26.2 mm (1.0 in)	54 years	33 of 100 (Routine)
19 November 2016	Occidental, US	daily rain	73.7 mm (2.9 in)	2.8 mm (0.11 in)	66 years	27 of 100 (Routine)
25 October 2016	Occidental, US	daily rain	55.1 mm (2.2 in)	15.5 mm (0.6 in)	65 years	32 of 100 (Routine)
14 October 2016	Occidental, US	daily rain	32.0 mm (1.3 in)	0.2 mm (0.01 in)	54 years	23 of 100 (Routine)
18 June 2016	Occidental, US	daily rain	3.3 mm (0.13 in)	2.3 mm (0.09 in)	16 years	12 of 100 (Routine)
17 June 2016	Occidental, US	daily rain	6.4 mm (0.25 in)	5.6 mm (0.22 in)	21 years	17 of 100 (Routine)
16 June 2016	Occidental, US	daily rain	1.8 mm (0.07 in)	0.3 mm (0.01 in)	21 years	13 of 100 (Routine)
11 December 2014	Occidental, US	daily rain	152.7 mm (6.0 in)	68.9 mm (2.7 in)	19 years	38 of 100 (Notable)

Extremes by Year

1943 to 2021

Yearly extremes at Occidental: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.6 C (105.1 F)	2017	35.6 C (96.1 F)	23
Coldest night (TNn)	-3.3 C (26.1 F)	2013	-1.1 C (30.0 F)	23
Wettest day (Rx1day)	216.2 mm (8.5 in)	1966	101.6 mm (4.0 in)	79
Wettest five days (Rx5day)	450.6 mm (17.7 in)	1955	223.0 mm (8.8 in)	79
Longest dry spell (CDD)	157 days	1981	84 days	79

Hottest day (TXx)

The hottest day of the year at Occidental, 1943 to 2021. The record is 40.6 C (105.1 F) in 2017, marked on the chart; the median year is 35.6 C (96.1 F).

Hottest day (TXx) at Occidental by year
Year	Hottest day (TXx)
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
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	35.6 C (96.1 F)
2000	38.3 C (100.9 F)
2001	36.7 C (98.1 F)
2002	33.3 C (91.9 F)
2003	36.1 C (97.0 F)
2004	33.3 C (91.9 F)
2005	32.8 C (91.0 F)
2006	39.4 C (102.9 F)
2007	35.0 C (95.0 F)
2008	36.7 C (98.1 F)
2009	35.6 C (96.1 F)
2010	35.6 C (96.1 F)
2011	33.9 C (93.0 F)
2012	36.1 C (97.0 F)
2013	36.1 C (97.0 F)
2014	33.9 C (93.0 F)
2015	35.6 C (96.1 F)
2016	33.9 C (93.0 F)
2017	40.6 C (105.1 F)
2018	30.0 C (86.0 F)
2019	34.4 C (93.9 F)
2020	40.0 C (104.0 F)
2021	25.0 C (77.0 F)

Coldest night (TNn)

The coldest night of the year at Occidental, 1943 to 2021. The record is -3.3 C (26.1 F) in 2013, marked on the chart; the median year is -1.1 C (30.0 F).

Coldest night (TNn) at Occidental by year
Year	Coldest night (TNn)
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
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	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	1.7 C (35.1 F)
2004	1.1 C (34.0 F)
2005	1.1 C (34.0 F)
2006	-2.2 C (28.0 F)
2007	-2.2 C (28.0 F)
2008	0.0 C (32.0 F)
2009	-1.7 C (28.9 F)
2010	-1.7 C (28.9 F)
2011	-2.8 C (27.0 F)
2012	-1.1 C (30.0 F)
2013	-3.3 C (26.1 F)
2014	1.1 C (34.0 F)
2015	0.6 C (33.1 F)
2016	-0.6 C (30.9 F)
2017	0.0 C (32.0 F)
2018	-1.1 C (30.0 F)
2019	-2.8 C (27.0 F)
2020	-1.7 C (28.9 F)
2021	-1.1 C (30.0 F)

Wettest day (Rx1day)

The wettest day of the year at Occidental, 1943 to 2021. The record is 216.2 mm (8.5 in) in 1966, marked on the chart; the median year is 101.6 mm (4.0 in).

Wettest day (Rx1day) at Occidental by year
Year	Wettest day (Rx1day)
1943	36.6 mm (1.4 in)
1944	89.7 mm (3.5 in)
1945	143.5 mm (5.6 in)
1946	65.3 mm (2.6 in)
1947	59.4 mm (2.3 in)
1948	100.6 mm (4.0 in)
1949	77.5 mm (3.1 in)
1950	132.8 mm (5.2 in)
1951	91.4 mm (3.6 in)
1952	114.8 mm (4.5 in)
1953	132.1 mm (5.2 in)
1954	161.3 mm (6.4 in)
1955	161.3 mm (6.4 in)
1956	101.6 mm (4.0 in)
1957	140.7 mm (5.5 in)
1958	99.1 mm (3.9 in)
1959	102.1 mm (4.0 in)
1960	154.4 mm (6.1 in)
1961	69.1 mm (2.7 in)
1962	151.4 mm (6.0 in)
1963	111.5 mm (4.4 in)
1964	87.1 mm (3.4 in)
1965	112.3 mm (4.4 in)
1966	216.2 mm (8.5 in)
1967	166.4 mm (6.6 in)
1968	94.2 mm (3.7 in)
1969	121.4 mm (4.8 in)
1970	135.1 mm (5.3 in)
1971	91.4 mm (3.6 in)
1972	77.0 mm (3.0 in)
1973	124.5 mm (4.9 in)
1974	105.9 mm (4.2 in)
1975	134.6 mm (5.3 in)
1976	59.2 mm (2.3 in)
1977	46.7 mm (1.8 in)
1978	76.7 mm (3.0 in)
1979	101.6 mm (4.0 in)
1980	101.6 mm (4.0 in)
1981	137.2 mm (5.4 in)
1982	194.1 mm (7.6 in)
1983	106.7 mm (4.2 in)
1984	85.9 mm (3.4 in)
1985	119.4 mm (4.7 in)
1986	155.4 mm (6.1 in)
1987	101.6 mm (4.0 in)
1988	86.1 mm (3.4 in)
1989	101.6 mm (4.0 in)
1990	82.0 mm (3.2 in)
1991	119.4 mm (4.7 in)
1992	75.4 mm (3.0 in)
1993	91.9 mm (3.6 in)
1994	101.6 mm (4.0 in)
1995	198.6 mm (7.8 in)
1996	150.4 mm (5.9 in)
1997	119.9 mm (4.7 in)
1998	153.2 mm (6.0 in)
1999	108.7 mm (4.3 in)
2000	115.8 mm (4.6 in)
2001	86.4 mm (3.4 in)
2002	87.9 mm (3.5 in)
2003	72.4 mm (2.9 in)
2004	149.9 mm (5.9 in)
2005	128.3 mm (5.1 in)
2006	85.1 mm (3.4 in)
2007	82.6 mm (3.3 in)
2008	74.9 mm (2.9 in)
2009	113.8 mm (4.5 in)
2010	165.9 mm (6.5 in)
2011	69.9 mm (2.8 in)
2012	137.4 mm (5.4 in)
2013	75.4 mm (3.0 in)
2014	179.3 mm (7.1 in)
2015	74.9 mm (2.9 in)
2016	91.2 mm (3.6 in)
2017	77.2 mm (3.0 in)
2018	147.3 mm (5.8 in)
2019	173.5 mm (6.8 in)
2020	40.6 mm (1.6 in)
2021	33.5 mm (1.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Occidental, 1943 to 2021. The record is 450.6 mm (17.7 in) in 1955, marked on the chart; the median year is 223.0 mm (8.8 in).

Wettest five days (Rx5day) at Occidental by year
Year	Wettest five days (Rx5day)
1943	55.4 mm (2.2 in)
1944	248.6 mm (9.8 in)
1945	282.1 mm (11.1 in)
1946	157.7 mm (6.2 in)
1947	122.7 mm (4.8 in)
1948	140.2 mm (5.5 in)
1949	131.3 mm (5.2 in)
1950	254.0 mm (10.0 in)
1951	261.8 mm (10.3 in)
1952	191.3 mm (7.5 in)
1953	156.5 mm (6.2 in)
1954	215.6 mm (8.5 in)
1955	450.6 mm (17.7 in)
1956	266.5 mm (10.5 in)
1957	345.5 mm (13.6 in)
1958	197.5 mm (7.8 in)
1959	202.7 mm (8.0 in)
1960	240.3 mm (9.5 in)
1961	134.6 mm (5.3 in)
1962	286.6 mm (11.3 in)
1963	259.6 mm (10.2 in)
1964	212.6 mm (8.4 in)
1965	230.9 mm (9.1 in)
1966	323.9 mm (12.8 in)
1967	321.6 mm (12.7 in)
1968	177.5 mm (7.0 in)
1969	317.5 mm (12.5 in)
1970	349.7 mm (13.8 in)
1971	126.7 mm (5.0 in)
1972	187.7 mm (7.4 in)
1973	334.7 mm (13.2 in)
1974	251.4 mm (9.9 in)
1975	223.8 mm (8.8 in)
1976	98.1 mm (3.9 in)
1977	108.6 mm (4.3 in)
1978	233.9 mm (9.2 in)
1979	217.0 mm (8.5 in)
1980	291.1 mm (11.5 in)
1981	248.7 mm (9.8 in)
1982	281.7 mm (11.1 in)
1983	248.6 mm (9.8 in)
1984	198.5 mm (7.8 in)
1985	179.8 mm (7.1 in)
1986	406.0 mm (16.0 in)
1987	190.6 mm (7.5 in)
1988	148.8 mm (5.9 in)
1989	147.6 mm (5.8 in)
1990	157.0 mm (6.2 in)
1991	322.5 mm (12.7 in)
1992	255.1 mm (10.0 in)
1993	224.2 mm (8.8 in)
1994	223.0 mm (8.8 in)
1995	350.0 mm (13.8 in)
1996	203.4 mm (8.0 in)
1997	326.3 mm (12.8 in)
1998	292.5 mm (11.5 in)
1999	236.0 mm (9.3 in)
2000	236.3 mm (9.3 in)
2001	199.1 mm (7.8 in)
2002	200.6 mm (7.9 in)
2003	153.4 mm (6.0 in)
2004	201.8 mm (7.9 in)
2005	360.7 mm (14.2 in)
2006	322.3 mm (12.7 in)
2007	210.1 mm (8.3 in)
2008	146.6 mm (5.8 in)
2009	130.2 mm (5.1 in)
2010	271.4 mm (10.7 in)
2011	136.4 mm (5.4 in)
2012	299.7 mm (11.8 in)
2013	90.1 mm (3.5 in)
2014	401.8 mm (15.8 in)
2015	225.3 mm (8.9 in)
2016	175.8 mm (6.9 in)
2017	220.7 mm (8.7 in)
2018	195.6 mm (7.7 in)
2019	270.7 mm (10.7 in)
2020	56.1 mm (2.2 in)
2021	67.8 mm (2.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Occidental, 1943 to 2021. The record is 157 days in 1981, marked on the chart; the median year is 84 days.

Longest dry spell (CDD) at Occidental by year
Year	Longest dry spell (CDD)
1943	91 days
1944	89 days
1945	128 days
1946	60 days
1947	119 days
1948	48 days
1949	72 days
1950	97 days
1951	60 days
1952	67 days
1953	80 days
1954	41 days
1955	135 days
1956	90 days
1957	107 days
1958	39 days
1959	126 days
1960	108 days
1961	70 days
1962	87 days
1963	100 days
1964	82 days
1965	111 days
1966	84 days
1967	103 days
1968	85 days
1969	116 days
1970	130 days
1971	94 days
1972	68 days
1973	117 days
1974	110 days
1975	51 days
1976	75 days
1977	26 days
1978	63 days
1979	62 days
1980	103 days
1981	157 days
1982	81 days
1983	106 days
1984	84 days
1985	97 days
1986	134 days
1987	129 days
1988	97 days
1989	77 days
1990	114 days
1991	117 days
1992	73 days
1993	125 days
1994	110 days
1995	137 days
1996	115 days
1997	76 days
1998	120 days
1999	110 days
2000	74 days
2001	67 days
2002	156 days
2003	56 days
2004	71 days
2005	77 days
2006	65 days
2007	82 days
2008	85 days
2009	60 days
2010	96 days
2011	32 days
2012	43 days
2013	76 days
2014	62 days
2015	36 days
2016	39 days
2017	68 days
2018	47 days
2019	30 days
2020	71 days
2021	13 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

57 years, 1944 to 2020

A day with at least 111.0 mm (4.4 in) of rain is expected about once in 2 years. A day with at least 222.3 mm (8.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Occidental: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	111.0 mm (4.4 in)
5 years	144.6 mm (5.7 in)
10 years	165.3 mm (6.5 in)
25 years	189.6 mm (7.5 in)
50 years	206.4 mm (8.1 in)
100 years	222.3 mm (8.8 in)	Longer than the 57 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, 57 years of values from 1944 to 2020.

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: 216.2 mm (8.5 in) in 1966; 198.6 mm (7.8 in) in 1995; 194.1 mm (7.6 in) in 1982.

Download the Data

Data for Occidental standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Occidental threshold days by year: CSV or JSON. Field meanings are on the data page.

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 2025-12-31. Last revised 31 December 2025 (2025-12-31).