Paicines 4 W Weather Records (USC00046610)

Record envelope, standing records and threshold days for Paicines 4 W (USC00046610), California, United States, with 64 years of record.

Key Facts for Paicines 4 W

Paicines 4 W (USC00046610) is a weather station in California, United States at 36.72 latitude and -121.35 longitude, 276 m (905 ft) above sea level.
The station reports from 1948 to 2011, 64 years of record.
1,464 records set at Paicines 4 W still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Paicines 4 W set a daily record precipitation of 16.5 mm (0.6 in) on 27 May 2010.

About the Station

Location: California, United States, 36.72 latitude, -121.35 longitude.
Elevation: 276 m (905 ft).
Period of record: 1948 to 2011, 64 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 Paicines 4 W. 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 Paicines 4 W, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	26.1 C (79.0 F)	-10.0 C (14.0 F)	n/a	n/a
Feb	26.7 C (80.1 F)	-5.6 C (21.9 F)	n/a	n/a
Mar	28.9 C (84.0 F)	-3.9 C (25.0 F)	n/a	n/a
Apr	35.6 C (96.1 F)	-2.2 C (28.0 F)	n/a	n/a
May	38.3 C (100.9 F)	0.0 C (32.0 F)	n/a	n/a
Jun	41.7 C (107.1 F)	-0.6 C (30.9 F)	n/a	n/a
Jul	43.3 C (109.9 F)	3.3 C (37.9 F)	n/a	n/a
Aug	41.7 C (107.1 F)	2.8 C (37.0 F)	n/a	n/a
Sep	38.3 C (100.9 F)	1.7 C (35.1 F)	n/a	n/a
Oct	38.9 C (102.0 F)	-3.3 C (26.1 F)	n/a	n/a
Nov	35.0 C (95.0 F)	-7.2 C (19.0 F)	n/a	n/a
Dec	23.3 C (73.9 F)	-8.9 C (16.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Paicines 4 W still stand. 1994 holds the most, with 128.

Standing records at Paicines 4 W by the year they were set
Year set	Standing records
1993	18
1994	128
1995	115
1996	125
1997	87
1998	80
1999	113
2000	76
2001	77
2002	95
2003	66
2004	86
2005	62
2006	69
2007	65
2008	73
2009	61
2010	44
2011	24

Wettest Day of Each Month

Dec: 142.2 mm (5.6 in)

The wettest day on record for each calendar month at Paicines 4 W. The most was 142.2 mm (5.6 in) on 23 December 1955.

Record daily precipitation for each month at Paicines 4 W
Month	Record daily precipitation (mm)	Date
Jan	104.1 mm (4.1 in)	20 January 2010
Feb	104.1 mm (4.1 in)	3 February 1998
Mar	53.8 mm (2.1 in)	8 March 1986
Apr	55.9 mm (2.2 in)	3 April 1958
May	28.7 mm (1.1 in)	16 May 1996
Jun	23.6 mm (0.9 in)	30 June 1982
Jul	11.2 mm (0.4 in)	2 July 1980
Aug	15.7 mm (0.6 in)	20 August 1976
Sep	78.7 mm (3.1 in)	19 September 1959
Oct	38.6 mm (1.5 in)	20 October 2004
Nov	97.5 mm (3.8 in)	19 November 1950
Dec	142.2 mm (5.6 in)	23 December 1955

Period of Record Coverage

1993 to 2011

19 years of record at Paicines 4 W, 1993 to 2011. 10 years have data for under 90 percent of days and are left out of rankings: 1993, 1996, 1997, 1998, 1999, 2000, 2006, 2009 and others.

Days with data per year at Paicines 4 W
Year	Days with data	Share of year	Complete
1993	61	17%	No
1994	336	92%	Yes
1995	363	99%	Yes
1996	293	80%	No
1997	283	78%	No
1998	226	62%	No
1999	301	82%	No
2000	269	73%	No
2001	350	96%	Yes
2002	354	97%	Yes
2003	347	95%	Yes
2004	343	94%	Yes
2005	333	91%	Yes
2006	311	85%	No
2007	354	97%	Yes
2008	362	99%	Yes
2009	301	82%	No
2010	265	73%	No
2011	86	24%	No

Latest Records

Latest records at Paicines 4 W
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 May 2010	Paicines 4 W, US	daily rain	16.5 mm (0.6 in)	10.7 mm (0.4 in)	20 years	20 of 100 (Routine)
22 April 2010	Paicines 4 W, US	daily rain	22.1 mm (0.9 in)	7.4 mm (0.29 in)	48 years	20 of 100 (Routine)
13 April 2010	Paicines 4 W, US	daily rain	29.2 mm (1.1 in)	10.4 mm (0.4 in)	7 years	23 of 100 (Routine)
5 April 2010	Paicines 4 W, US	daily rain	40.6 mm (1.6 in)	24.9 mm (1.0 in)	35 years	52 of 100 (Notable)
26 February 2010	Paicines 4 W, US	daily rain	27.9 mm (1.1 in)	3.8 mm (0.15 in)	16 years	14 of 100 (Routine)
23 February 2010	Paicines 4 W, US	daily rain	19.1 mm (0.8 in)	1.1 mm (0.04 in)	40 years	18 of 100 (Routine)
20 January 2010	Paicines 4 W, US	monthly rain	104.1 mm (4.1 in)	49.2 mm (1.9 in)	4 years	57 of 100 (Notable)
14 September 2009	Paicines 4 W, US	daily rain	1.5 mm (0.06 in)	1.5 mm (0.06 in)	60 years	20 of 100 (Routine)
3 May 2009	Paicines 4 W, US	daily rain	13.5 mm (0.5 in)	6.6 mm (0.26 in)	59 years	20 of 100 (Routine)
24 February 2008	Paicines 4 W, US	daily rain	28.7 mm (1.1 in)	4.1 mm (0.16 in)	38 years	20 of 100 (Routine)
5 January 2008	Paicines 4 W, US	daily rain	51.3 mm (2.0 in)	8.4 mm (0.33 in)	25 years	21 of 100 (Routine)
22 September 2007	Paicines 4 W, US	daily rain	9.7 mm (0.38 in)	5.9 mm (0.23 in)	40 years	20 of 100 (Routine)
27 February 2007	Paicines 4 W, US	daily rain	23.1 mm (0.9 in)	6.3 mm (0.25 in)	24 years	18 of 100 (Routine)
22 February 2007	Paicines 4 W, US	daily rain	17.5 mm (0.7 in)	1.2 mm (0.05 in)	8 years	9 of 100 (Routine)
18 December 2006	Paicines 4 W, US	daily rain	30.5 mm (1.2 in)	2.6 mm (0.10 in)	0 years	6 of 100 (Routine)
10 December 2006	Paicines 4 W, US	daily rain	38.4 mm (1.5 in)	6.9 mm (0.27 in)	9 years	12 of 100 (Routine)
22 May 2006	Paicines 4 W, US	daily rain	7.1 mm (0.28 in)	3.0 mm (0.12 in)	48 years	20 of 100 (Routine)
4 April 2006	Paicines 4 W, US	daily rain	33.5 mm (1.3 in)	18.3 mm (0.7 in)	48 years	46 of 100 (Notable)
28 February 2006	Paicines 4 W, US	daily rain	26.4 mm (1.0 in)	1.5 mm (0.06 in)	32 years	15 of 100 (Routine)
1 January 2006	Paicines 4 W, US	monthly rain	54.9 mm (2.2 in)	7.1 mm (0.28 in)	43 years	35 of 100 (Notable)

Extremes by Year

1948 to 2011

Yearly extremes at Paicines 4 W: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.3 C (109.9 F)	2006	39.4 C (102.9 F)	19
Coldest night (TNn)	-10.0 C (14.0 F)	2007	-6.1 C (21.0 F)	19
Wettest day (Rx1day)	142.2 mm (5.6 in)	1955	39.4 mm (1.6 in)	63
Wettest five days (Rx5day)	227.0 mm (8.9 in)	1955	79.5 mm (3.1 in)	63
Longest dry spell (CDD)	221 days	2008	115 days	63

Hottest day (TXx)

The hottest day of the year at Paicines 4 W, 1948 to 2011. The record is 43.3 C (109.9 F) in 2006, marked on the chart; the median year is 39.4 C (102.9 F).

Hottest day (TXx) at Paicines 4 W by year
Year	Hottest day (TXx)
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	28.3 C (82.9 F)
1994	38.3 C (100.9 F)
1995	40.0 C (104.0 F)
1996	39.4 C (102.9 F)
1997	39.4 C (102.9 F)
1998	38.3 C (100.9 F)
1999	39.4 C (102.9 F)
2000	41.7 C (107.1 F)
2001	39.4 C (102.9 F)
2002	40.6 C (105.1 F)
2003	38.9 C (102.0 F)
2004	37.8 C (100.0 F)
2005	37.8 C (100.0 F)
2006	43.3 C (109.9 F)
2007	38.3 C (100.9 F)
2008	40.0 C (104.0 F)
2009	39.4 C (102.9 F)
2010	41.7 C (107.1 F)
2011	32.8 C (91.0 F)

Coldest night (TNn)

The coldest night of the year at Paicines 4 W, 1948 to 2011. The record is -10.0 C (14.0 F) in 2007, marked on the chart; the median year is -6.1 C (21.0 F).

Coldest night (TNn) at Paicines 4 W by year
Year	Coldest night (TNn)
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	-6.7 C (19.9 F)
1994	-7.8 C (18.0 F)
1995	-5.0 C (23.0 F)
1996	-4.4 C (24.1 F)
1997	-6.1 C (21.0 F)
1998	-8.9 C (16.0 F)
1999	-4.4 C (24.1 F)
2000	-5.0 C (23.0 F)
2001	-5.6 C (21.9 F)
2002	-6.1 C (21.0 F)
2003	-6.1 C (21.0 F)
2004	-6.1 C (21.0 F)
2005	-5.0 C (23.0 F)
2006	-6.1 C (21.0 F)
2007	-10.0 C (14.0 F)
2008	-4.4 C (24.1 F)
2009	-7.2 C (19.0 F)
2010	-2.2 C (28.0 F)
2011	-2.2 C (28.0 F)

Wettest day (Rx1day)

The wettest day of the year at Paicines 4 W, 1948 to 2011. The record is 142.2 mm (5.6 in) in 1955, marked on the chart; the median year is 39.4 mm (1.6 in).

Wettest day (Rx1day) at Paicines 4 W by year
Year	Wettest day (Rx1day)
1948	24.9 mm (1.0 in)
1949	22.9 mm (0.9 in)
1950	97.5 mm (3.8 in)
1951	41.9 mm (1.6 in)
1952	41.1 mm (1.6 in)
1953	28.4 mm (1.1 in)
1954	35.6 mm (1.4 in)
1955	142.2 mm (5.6 in)
1956	38.6 mm (1.5 in)
1957	32.3 mm (1.3 in)
1958	55.9 mm (2.2 in)
1959	78.7 mm (3.1 in)
1960	59.9 mm (2.4 in)
1961	24.1 mm (0.9 in)
1962	47.8 mm (1.9 in)
1963	44.5 mm (1.8 in)
1964	37.3 mm (1.5 in)
1965	39.1 mm (1.5 in)
1966	69.6 mm (2.7 in)
1967	36.6 mm (1.4 in)
1968	20.3 mm (0.8 in)
1969	44.2 mm (1.7 in)
1970	63.0 mm (2.5 in)
1971	38.9 mm (1.5 in)
1972	24.1 mm (0.9 in)
1973	33.0 mm (1.3 in)
1974	40.4 mm (1.6 in)
1975	37.6 mm (1.5 in)
1976	45.0 mm (1.8 in)
1977	39.1 mm (1.5 in)
1978	45.7 mm (1.8 in)
1979	34.8 mm (1.4 in)
1980	34.8 mm (1.4 in)
1981	34.8 mm (1.4 in)
1982	54.1 mm (2.1 in)
1983	41.1 mm (1.6 in)
1984	31.2 mm (1.2 in)
1985	41.7 mm (1.6 in)
1986	53.8 mm (2.1 in)
1987	77.7 mm (3.1 in)
1988	32.5 mm (1.3 in)
1989	22.9 mm (0.9 in)
1990	29.2 mm (1.1 in)
1991	34.3 mm (1.4 in)
1992	34.3 mm (1.4 in)
1993	52.1 mm (2.1 in)
1994	31.5 mm (1.2 in)
1995	49.3 mm (1.9 in)
1996	73.4 mm (2.9 in)
1997	39.4 mm (1.6 in)
1998	104.1 mm (4.1 in)
1999	30.5 mm (1.2 in)
2000	11.4 mm (0.4 in)
2001	55.9 mm (2.2 in)
2002	76.2 mm (3.0 in)
2003	36.6 mm (1.4 in)
2004	42.9 mm (1.7 in)
2005	55.4 mm (2.2 in)
2006	54.9 mm (2.2 in)
2007	23.1 mm (0.9 in)
2008	51.3 mm (2.0 in)
2009	26.4 mm (1.0 in)
2010	104.1 mm (4.1 in)
2011	n/a

Wettest five days (Rx5day)

The wettest five days of the year at Paicines 4 W, 1948 to 2011. The record is 227.0 mm (8.9 in) in 1955, marked on the chart; the median year is 79.5 mm (3.1 in).

Wettest five days (Rx5day) at Paicines 4 W by year
Year	Wettest five days (Rx5day)
1948	38.5 mm (1.5 in)
1949	40.6 mm (1.6 in)
1950	151.6 mm (6.0 in)
1951	92.7 mm (3.6 in)
1952	78.0 mm (3.1 in)
1953	36.1 mm (1.4 in)
1954	66.6 mm (2.6 in)
1955	227.0 mm (8.9 in)
1956	69.6 mm (2.7 in)
1957	49.1 mm (1.9 in)
1958	108.7 mm (4.3 in)
1959	78.7 mm (3.1 in)
1960	80.0 mm (3.1 in)
1961	38.1 mm (1.5 in)
1962	105.9 mm (4.2 in)
1963	116.1 mm (4.6 in)
1964	72.2 mm (2.8 in)
1965	82.1 mm (3.2 in)
1966	135.6 mm (5.3 in)
1967	75.4 mm (3.0 in)
1968	38.9 mm (1.5 in)
1969	98.1 mm (3.9 in)
1970	116.9 mm (4.6 in)
1971	67.1 mm (2.6 in)
1972	60.5 mm (2.4 in)
1973	79.7 mm (3.1 in)
1974	75.3 mm (3.0 in)
1975	66.0 mm (2.6 in)
1976	80.8 mm (3.2 in)
1977	81.5 mm (3.2 in)
1978	110.3 mm (4.3 in)
1979	72.2 mm (2.8 in)
1980	129.3 mm (5.1 in)
1981	84.3 mm (3.3 in)
1982	98.6 mm (3.9 in)
1983	93.2 mm (3.7 in)
1984	34.8 mm (1.4 in)
1985	52.6 mm (2.1 in)
1986	94.0 mm (3.7 in)
1987	87.4 mm (3.4 in)
1988	63.9 mm (2.5 in)
1989	24.7 mm (1.0 in)
1990	38.6 mm (1.5 in)
1991	89.4 mm (3.5 in)
1992	82.9 mm (3.3 in)
1993	80.5 mm (3.2 in)
1994	79.5 mm (3.1 in)
1995	102.1 mm (4.0 in)
1996	89.7 mm (3.5 in)
1997	69.7 mm (2.7 in)
1998	187.5 mm (7.4 in)
1999	40.7 mm (1.6 in)
2000	11.4 mm (0.4 in)
2001	91.5 mm (3.6 in)
2002	120.3 mm (4.7 in)
2003	71.1 mm (2.8 in)
2004	72.9 mm (2.9 in)
2005	56.7 mm (2.2 in)
2006	128.6 mm (5.1 in)
2007	38.3 mm (1.5 in)
2008	64.0 mm (2.5 in)
2009	64.6 mm (2.5 in)
2010	129.0 mm (5.1 in)
2011	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Paicines 4 W, 1948 to 2011. The record is 221 days in 2008, marked on the chart; the median year is 115 days.

Longest dry spell (CDD) at Paicines 4 W by year
Year	Longest dry spell (CDD)
1948	102 days
1949	72 days
1950	91 days
1951	170 days
1952	200 days
1953	136 days
1954	149 days
1955	188 days
1956	130 days
1957	120 days
1958	86 days
1959	95 days
1960	127 days
1961	85 days
1962	166 days
1963	91 days
1964	83 days
1965	92 days
1966	110 days
1967	111 days
1968	152 days
1969	173 days
1970	132 days
1971	166 days
1972	132 days
1973	99 days
1974	83 days
1975	80 days
1976	65 days
1977	101 days
1978	132 days
1979	83 days
1980	102 days
1981	170 days
1982	85 days
1983	104 days
1984	151 days
1985	142 days
1986	139 days
1987	175 days
1988	140 days
1989	114 days
1990	114 days
1991	90 days
1992	190 days
1993	62 days
1994	115 days
1995	106 days
1996	72 days
1997	100 days
1998	84 days
1999	144 days
2000	166 days
2001	205 days
2002	144 days
2003	89 days
2004	101 days
2005	97 days
2006	197 days
2007	150 days
2008	221 days
2009	133 days
2010	126 days
2011	n/a

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

52 years, 1949 to 2008

A day with at least 39.4 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 123.6 mm (4.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Paicines 4 W: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	39.4 mm (1.6 in)
5 years	54.7 mm (2.2 in)
10 years	67.2 mm (2.6 in)
25 years	86.5 mm (3.4 in)
50 years	103.6 mm (4.1 in)
100 years	123.6 mm (4.9 in)	Longer than the 52 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, 52 years of values from 1949 to 2008.

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: 142.2 mm (5.6 in) in 1955; 97.5 mm (3.8 in) in 1950; 78.7 mm (3.1 in) in 1959.

Download the Data

Data for Paicines 4 W standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Paicines 4 W 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).