Poway Valley Weather Records (USC00047111)

Record envelope, standing records and threshold days for Poway Valley (USC00047111), California, United States, with 134 years of record.

Key Facts for Poway Valley

Poway Valley (USC00047111) is a weather station in California, United States at 33.02 latitude and -117.03 longitude, 198 m (648 ft) above sea level.
The station reports from 1893 to 2026, 134 years of record.
1,464 records set at Poway Valley still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Poway Valley set a daily record precipitation of 11.9 mm (0.5 in) on 5 May 2026.

About the Station

Location: California, United States, 33.02 latitude, -117.03 longitude.
Elevation: 198 m (648 ft).
Period of record: 1893 to 2026, 134 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 Poway Valley. 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 Poway Valley, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	30.6 C (87.1 F)	-5.0 C (23.0 F)	n/a	n/a
Feb	34.4 C (93.9 F)	-3.9 C (25.0 F)	n/a	n/a
Mar	33.9 C (93.0 F)	-2.8 C (27.0 F)	n/a	n/a
Apr	35.0 C (95.0 F)	-1.1 C (30.0 F)	n/a	n/a
May	40.6 C (105.1 F)	0.6 C (33.1 F)	n/a	n/a
Jun	41.7 C (107.1 F)	3.3 C (37.9 F)	n/a	n/a
Jul	41.1 C (106.0 F)	6.7 C (44.1 F)	n/a	n/a
Aug	42.2 C (108.0 F)	10.6 C (51.1 F)	n/a	n/a
Sep	41.7 C (107.1 F)	3.3 C (37.9 F)	n/a	n/a
Oct	39.4 C (102.9 F)	-2.2 C (28.0 F)	n/a	n/a
Nov	33.9 C (93.0 F)	-4.4 C (24.1 F)	n/a	n/a
Dec	29.4 C (84.9 F)	-6.1 C (21.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Poway Valley still stand. 1908 holds the most, with 161.

Standing records at Poway Valley by the year they were set
Year set	Standing records
1893	1
1897	30
1901	40
1902	110
1903	80
1904	56
1905	99
1906	100
1907	125
1908	161
1909	60
1970	5
1980	10
1981	15
2011	91
2012	103
2013	89
2014	101
2015	113
2016	75

Wettest Day of Each Month

Jan: 86.9 mm (3.4 in)

The wettest day on record for each calendar month at Poway Valley. The most was 86.9 mm (3.4 in) on 21 January 1909.

Record daily precipitation for each month at Poway Valley
Month	Record daily precipitation (mm)	Date
Jan	86.9 mm (3.4 in)	21 January 1909
Feb	71.1 mm (2.8 in)	14 February 2019
Mar	82.3 mm (3.2 in)	20 March 1893
Apr	77.0 mm (3.0 in)	10 April 2020
May	33.5 mm (1.3 in)	9 May 1977
Jun	25.4 mm (1.0 in)	16 June 2004
Jul	25.7 mm (1.0 in)	18 July 2015
Aug	32.8 mm (1.3 in)	20 August 2023
Sep	32.8 mm (1.3 in)	25 September 1997
Oct	38.1 mm (1.5 in)	20 October 2004
Nov	62.0 mm (2.4 in)	23 November 1965
Dec	73.7 mm (2.9 in)	5 December 1966

Period of Record Coverage

1893 to 2016

20 years of record at Poway Valley, 1893 to 2016. 12 years have data for under 90 percent of days and are left out of rankings: 1893, 1901, 1902, 1903, 1904, 1906, 1909, 1966 and others.

Days with data per year at Poway Valley
Year	Days with data	Share of year	Complete
1893	1	0%	No
1901	109	30%	No
1902	326	89%	No
1903	243	67%	No
1904	242	66%	No
1905	359	98%	Yes
1906	300	82%	No
1907	364	100%	Yes
1908	360	98%	Yes
1909	243	67%	No
1966	1	0%	No
1970	26	7%	No
1980	29	8%	No
1981	74	20%	No
2011	363	99%	Yes
2012	363	99%	Yes
2013	365	100%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	303	83%	No

Latest Records

Latest records at Poway Valley
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
5 May 2026	Poway Valley, US	daily rain	11.9 mm (0.5 in)	5.8 mm (0.23 in)	28 years	20 of 100 (Routine)
1 January 2026	Poway Valley, US	daily rain	43.9 mm (1.7 in)	7.1 mm (0.28 in)	3 years	15 of 100 (Routine)
28 August 2025	Poway Valley, US	daily rain	1.3 mm (0.05 in)	1.3 mm (0.05 in)	131 years	20 of 100 (Routine)
13 February 2025	Poway Valley, US	daily rain	54.1 mm (2.1 in)	15.2 mm (0.6 in)	33 years	32 of 100 (Routine)
5 April 2024	Poway Valley, US	daily rain	6.4 mm (0.25 in)	1.3 mm (0.05 in)	59 years	20 of 100 (Routine)
30 March 2024	Poway Valley, US	daily rain	26.2 mm (1.0 in)	9.7 mm (0.38 in)	1 year	18 of 100 (Routine)
22 January 2024	Poway Valley, US	daily rain	37.3 mm (1.5 in)	11.9 mm (0.5 in)	114 years	48 of 100 (Notable)
21 August 2023	Poway Valley, US	daily rain	20.3 mm (0.8 in)	19.0 mm (0.7 in)	1 year	20 of 100 (Routine)
20 August 2023	Poway Valley, US	monthly rain	32.8 mm (1.3 in)	4.4 mm (0.17 in)	46 years	41 of 100 (Notable)
8 August 2023	Poway Valley, US	daily rain	0.3 mm (0.01 in)	0.3 mm (0.01 in)	129 years	20 of 100 (Routine)
30 May 2023	Poway Valley, US	daily rain (Tie)	0.3 mm (0.01 in)	tie	52 years	6 of 100 (Routine)
30 March 2023	Poway Valley, US	daily rain	16.5 mm (0.6 in)	12.2 mm (0.5 in)	44 years	20 of 100 (Routine)
22 March 2023	Poway Valley, US	daily rain	17.0 mm (0.7 in)	5.8 mm (0.23 in)	53 years	20 of 100 (Routine)
21 March 2023	Poway Valley, US	daily rain	31.8 mm (1.3 in)	0.6 mm (0.02 in)	30 years	19 of 100 (Routine)
15 March 2023	Poway Valley, US	daily rain	42.7 mm (1.7 in)	7.1 mm (0.28 in)	40 years	28 of 100 (Routine)
16 January 2023	Poway Valley, US	daily rain	50.8 mm (2.0 in)	2.5 mm (0.10 in)	29 years	19 of 100 (Routine)
1 January 2023	Poway Valley, US	daily rain	36.8 mm (1.4 in)	20.3 mm (0.8 in)	5 years	25 of 100 (Routine)
9 September 2022	Poway Valley, US	daily rain	3.8 mm (0.15 in)	3.0 mm (0.12 in)	49 years	20 of 100 (Routine)
24 December 2021	Poway Valley, US	daily rain	25.7 mm (1.0 in)	5.6 mm (0.22 in)	62 years	33 of 100 (Routine)
14 December 2021	Poway Valley, US	daily rain	33.0 mm (1.3 in)	16.5 mm (0.6 in)	56 years	41 of 100 (Notable)

Extremes by Year

1893 to 2026

Yearly extremes at Poway Valley: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.2 C (108.0 F)	1909	38.3 C (101.0 F)	20
Coldest night (TNn)	-6.1 C (21.0 F)	1901	-1.7 C (28.9 F)	20
Wettest day (Rx1day)	86.9 mm (3.4 in)	1909	43.7 mm (1.7 in)	88
Wettest five days (Rx5day)	224.6 mm (8.8 in)	1895	67.1 mm (2.6 in)	88
Longest dry spell (CDD)	206 days	1974	108 days	88

Hottest day (TXx)

The hottest day of the year at Poway Valley, 1893 to 2026. The record is 42.2 C (108.0 F) in 1909, marked on the chart; the median year is 38.3 C (101.0 F).

Hottest day (TXx) at Poway Valley by year
Year	Hottest day (TXx)
1893	15.6 C (60.1 F)
1894	n/a
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1900	n/a
1901	35.6 C (96.1 F)
1902	35.6 C (96.1 F)
1903	37.2 C (99.0 F)
1904	35.6 C (96.1 F)
1905	37.8 C (100.0 F)
1906	41.7 C (107.1 F)
1907	41.7 C (107.1 F)
1908	40.0 C (104.0 F)
1909	42.2 C (108.0 F)
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	18.3 C (64.9 F)
1967	n/a
1968	n/a
1969	n/a
1970	33.3 C (91.9 F)
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	30.0 C (86.0 F)
1981	35.0 C (95.0 F)
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	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	39.4 C (102.9 F)
2012	38.9 C (102.0 F)
2013	38.9 C (102.0 F)
2014	41.1 C (106.0 F)
2015	39.4 C (102.9 F)
2016	41.1 C (106.0 F)
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)

The coldest night of the year at Poway Valley, 1893 to 2026. The record is -6.1 C (21.0 F) in 1901, marked on the chart; the median year is -1.7 C (28.9 F).

Coldest night (TNn) at Poway Valley by year
Year	Coldest night (TNn)
1893	n/a
1894	n/a
1895	n/a
1896	n/a
1897	18.3 C (64.9 F)
1898	n/a
1899	n/a
1900	n/a
1901	-6.1 C (21.0 F)
1902	-2.8 C (27.0 F)
1903	-2.8 C (27.0 F)
1904	-0.6 C (30.9 F)
1905	-6.1 C (21.0 F)
1906	-5.0 C (23.0 F)
1907	-3.3 C (26.1 F)
1908	-4.4 C (24.1 F)
1909	-2.8 C (27.0 F)
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	2.2 C (36.0 F)
1967	n/a
1968	n/a
1969	n/a
1970	7.2 C (45.0 F)
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	-1.1 C (30.0 F)
1981	2.2 C (36.0 F)
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	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	-0.6 C (30.9 F)
2012	-3.3 C (26.1 F)
2013	-1.7 C (28.9 F)
2014	-1.1 C (30.0 F)
2015	-1.7 C (28.9 F)
2016	-0.6 C (30.9 F)
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)

The wettest day of the year at Poway Valley, 1893 to 2026. The record is 86.9 mm (3.4 in) in 1909, marked on the chart; the median year is 43.7 mm (1.7 in).

Wettest day (Rx1day) at Poway Valley by year
Year	Wettest day (Rx1day)
1893	82.3 mm (3.2 in)
1894	33.8 mm (1.3 in)
1895	77.5 mm (3.1 in)
1896	59.7 mm (2.4 in)
1897	45.5 mm (1.8 in)
1898	46.2 mm (1.8 in)
1899	44.5 mm (1.8 in)
1900	53.1 mm (2.1 in)
1901	49.3 mm (1.9 in)
1902	50.3 mm (2.0 in)
1903	32.5 mm (1.3 in)
1904	41.7 mm (1.6 in)
1905	78.0 mm (3.1 in)
1906	40.6 mm (1.6 in)
1907	44.5 mm (1.8 in)
1908	35.8 mm (1.4 in)
1909	86.9 mm (3.4 in)
1956	48.8 mm (1.9 in)
1957	32.8 mm (1.3 in)
1958	4.6 mm (0.18 in)
1959	27.9 mm (1.1 in)
1960	25.4 mm (1.0 in)
1961	24.9 mm (1.0 in)
1962	58.2 mm (2.3 in)
1963	34.8 mm (1.4 in)
1964	24.9 mm (1.0 in)
1965	63.0 mm (2.5 in)
1966	73.7 mm (2.9 in)
1967	33.8 mm (1.3 in)
1968	29.2 mm (1.1 in)
1969	45.2 mm (1.8 in)
1970	54.1 mm (2.1 in)
1971	20.1 mm (0.8 in)
1972	26.7 mm (1.1 in)
1973	25.7 mm (1.0 in)
1974	45.7 mm (1.8 in)
1975	45.2 mm (1.8 in)
1976	45.0 mm (1.8 in)
1977	33.5 mm (1.3 in)
1978	58.9 mm (2.3 in)
1979	46.7 mm (1.8 in)
1980	56.4 mm (2.2 in)
1981	40.6 mm (1.6 in)
1982	49.3 mm (1.9 in)
1983	61.0 mm (2.4 in)
1984	29.7 mm (1.2 in)
1985	50.8 mm (2.0 in)
1986	47.0 mm (1.9 in)
1987	40.6 mm (1.6 in)
1988	35.6 mm (1.4 in)
1989	19.8 mm (0.8 in)
1990	25.9 mm (1.0 in)
1991	79.5 mm (3.1 in)
1992	42.7 mm (1.7 in)
1993	52.8 mm (2.1 in)
1994	31.8 mm (1.3 in)
1995	7.9 mm (0.31 in)
1996	58.4 mm (2.3 in)
1997	38.6 mm (1.5 in)
1998	56.4 mm (2.2 in)
1999	23.9 mm (0.9 in)
2000	35.6 mm (1.4 in)
2001	41.1 mm (1.6 in)
2002	27.2 mm (1.1 in)
2003	48.8 mm (1.9 in)
2004	52.1 mm (2.1 in)
2005	37.3 mm (1.5 in)
2006	33.0 mm (1.3 in)
2007	46.2 mm (1.8 in)
2008	39.4 mm (1.6 in)
2009	43.4 mm (1.7 in)
2010	55.6 mm (2.2 in)
2011	33.5 mm (1.3 in)
2012	41.7 mm (1.6 in)
2013	28.7 mm (1.1 in)
2014	23.9 mm (0.9 in)
2015	25.7 mm (1.0 in)
2016	51.6 mm (2.0 in)
2017	57.7 mm (2.3 in)
2018	59.2 mm (2.3 in)
2019	71.1 mm (2.8 in)
2020	77.0 mm (3.0 in)
2021	33.0 mm (1.3 in)
2022	20.3 mm (0.8 in)
2023	55.9 mm (2.2 in)
2024	37.3 mm (1.5 in)
2025	54.1 mm (2.1 in)
2026	43.9 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Poway Valley, 1893 to 2026. The record is 224.6 mm (8.8 in) in 1895, marked on the chart; the median year is 67.1 mm (2.6 in).

Wettest five days (Rx5day) at Poway Valley by year
Year	Wettest five days (Rx5day)
1893	93.4 mm (3.7 in)
1894	36.1 mm (1.4 in)
1895	224.6 mm (8.8 in)
1896	60.5 mm (2.4 in)
1897	97.5 mm (3.8 in)
1898	49.3 mm (1.9 in)
1899	60.0 mm (2.4 in)
1900	98.8 mm (3.9 in)
1901	119.4 mm (4.7 in)
1902	62.2 mm (2.4 in)
1903	78.7 mm (3.1 in)
1904	53.4 mm (2.1 in)
1905	145.3 mm (5.7 in)
1906	79.7 mm (3.1 in)
1907	59.4 mm (2.3 in)
1908	68.0 mm (2.7 in)
1909	116.1 mm (4.6 in)
1956	60.0 mm (2.4 in)
1957	66.6 mm (2.6 in)
1958	6.6 mm (0.26 in)
1959	51.3 mm (2.0 in)
1960	61.2 mm (2.4 in)
1961	34.6 mm (1.4 in)
1962	87.7 mm (3.5 in)
1963	65.3 mm (2.6 in)
1964	40.9 mm (1.6 in)
1965	103.2 mm (4.1 in)
1966	143.8 mm (5.7 in)
1967	57.5 mm (2.3 in)
1968	58.4 mm (2.3 in)
1969	73.2 mm (2.9 in)
1970	92.4 mm (3.6 in)
1971	54.4 mm (2.1 in)
1972	56.1 mm (2.2 in)
1973	45.0 mm (1.8 in)
1974	98.8 mm (3.9 in)
1975	88.9 mm (3.5 in)
1976	126.0 mm (5.0 in)
1977	63.6 mm (2.5 in)
1978	137.9 mm (5.4 in)
1979	61.9 mm (2.4 in)
1980	149.6 mm (5.9 in)
1981	97.7 mm (3.8 in)
1982	85.2 mm (3.4 in)
1983	158.3 mm (6.2 in)
1984	50.4 mm (2.0 in)
1985	79.0 mm (3.1 in)
1986	49.1 mm (1.9 in)
1987	53.1 mm (2.1 in)
1988	79.7 mm (3.1 in)
1989	25.7 mm (1.0 in)
1990	39.3 mm (1.5 in)
1991	132.4 mm (5.2 in)
1992	79.9 mm (3.1 in)
1993	140.3 mm (5.5 in)
1994	63.5 mm (2.5 in)
1995	10.7 mm (0.4 in)
1996	66.3 mm (2.6 in)
1997	68.3 mm (2.7 in)
1998	84.1 mm (3.3 in)
1999	43.2 mm (1.7 in)
2000	72.7 mm (2.9 in)
2001	67.5 mm (2.7 in)
2002	50.1 mm (2.0 in)
2003	54.9 mm (2.2 in)
2004	81.8 mm (3.2 in)
2005	108.9 mm (4.3 in)
2006	24.1 mm (0.9 in)
2007	65.5 mm (2.6 in)
2008	56.0 mm (2.2 in)
2009	68.3 mm (2.7 in)
2010	175.5 mm (6.9 in)
2011	55.7 mm (2.2 in)
2012	52.9 mm (2.1 in)
2013	35.3 mm (1.4 in)
2014	53.4 mm (2.1 in)
2015	34.9 mm (1.4 in)
2016	144.9 mm (5.7 in)
2017	115.6 mm (4.6 in)
2018	98.1 mm (3.9 in)
2019	94.0 mm (3.7 in)
2020	148.3 mm (5.8 in)
2021	50.5 mm (2.0 in)
2022	34.3 mm (1.4 in)
2023	113.0 mm (4.4 in)
2024	88.9 mm (3.5 in)
2025	63.3 mm (2.5 in)
2026	69.2 mm (2.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Poway Valley, 1893 to 2026. The record is 206 days in 1974, marked on the chart; the median year is 108 days.

Longest dry spell (CDD) at Poway Valley by year
Year	Longest dry spell (CDD)
1893	153 days
1894	66 days
1895	31 days
1896	59 days
1897	46 days
1898	57 days
1899	71 days
1900	49 days
1901	150 days
1902	90 days
1903	125 days
1904	136 days
1905	117 days
1906	110 days
1907	113 days
1908	79 days
1909	140 days
1956	166 days
1957	122 days
1958	134 days
1959	157 days
1960	129 days
1961	64 days
1962	184 days
1963	55 days
1964	115 days
1965	108 days
1966	146 days
1967	79 days
1968	93 days
1969	88 days
1970	91 days
1971	140 days
1972	75 days
1973	90 days
1974	206 days
1975	70 days
1976	125 days
1977	71 days
1978	67 days
1979	72 days
1980	81 days
1981	71 days
1982	111 days
1983	103 days
1984	60 days
1985	134 days
1986	133 days
1987	78 days
1988	162 days
1989	108 days
1990	201 days
1991	182 days
1992	49 days
1993	126 days
1994	43 days
1995	107 days
1996	77 days
1997	49 days
1998	100 days
1999	122 days
2000	100 days
2001	158 days
2002	76 days
2003	123 days
2004	124 days
2005	59 days
2006	143 days
2007	121 days
2008	150 days
2009	164 days
2010	154 days
2011	70 days
2012	138 days
2013	155 days
2014	97 days
2015	56 days
2016	113 days
2017	149 days
2018	132 days
2019	123 days
2020	130 days
2021	89 days
2022	108 days
2023	105 days
2024	193 days
2025	101 days
2026	96 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

66 years, 1893 to 2025

A day with at least 43.2 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 86.8 mm (3.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Poway Valley: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	43.2 mm (1.7 in)
5 years	57.5 mm (2.3 in)
10 years	65.8 mm (2.6 in)
25 years	75.1 mm (3.0 in)
50 years	81.3 mm (3.2 in)
100 years	86.8 mm (3.4 in)	Longer than the 66 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, 66 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: 82.3 mm (3.2 in) in 1893; 79.5 mm (3.1 in) in 1991; 78.0 mm (3.1 in) in 1905.

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Data for Poway Valley standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Poway Valley 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).