Pismo Beach Weather Records (USC00046943)

Record envelope, standing records and threshold days for Pismo Beach (USC00046943), California, United States, with 58 years of record.

Key Facts for Pismo Beach

Pismo Beach (USC00046943) is a weather station in California, United States at 35.16 latitude and -120.68 longitude, 12 m (39 ft) above sea level.
The station reports from 1949 to 2006, 58 years of record.
1,464 records set at Pismo Beach still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Pismo Beach set a daily record high minimum temperature of 15.0 C (59.0 F) on 15 November 2005.

About the Station

Location: California, United States, 35.16 latitude, -120.68 longitude.
Elevation: 12 m (39 ft).
Period of record: 1949 to 2006, 58 years.
Eligible elements: tmax, tmin, 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 Pismo Beach. 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 Pismo Beach, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	29.4 C (84.9 F)	-4.4 C (24.1 F)	n/a	n/a
Feb	32.2 C (90.0 F)	-2.2 C (28.0 F)	n/a	n/a
Mar	32.2 C (90.0 F)	-5.0 C (23.0 F)	n/a	n/a
Apr	38.3 C (100.9 F)	-2.8 C (27.0 F)	n/a	n/a
May	37.8 C (100.0 F)	-1.1 C (30.0 F)	n/a	n/a
Jun	37.2 C (99.0 F)	2.8 C (37.0 F)	n/a	n/a
Jul	38.9 C (102.0 F)	3.3 C (37.9 F)	n/a	n/a
Aug	38.9 C (102.0 F)	3.9 C (39.0 F)	n/a	n/a
Sep	39.4 C (102.9 F)	-1.1 C (30.0 F)	n/a	n/a
Oct	37.2 C (99.0 F)	-2.8 C (27.0 F)	n/a	n/a
Nov	32.8 C (91.0 F)	-1.7 C (28.9 F)	n/a	n/a
Dec	33.3 C (91.9 F)	-6.1 C (21.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Pismo Beach still stand. 1955 holds the most, with 61.

Standing records at Pismo Beach by the year they were set
Year set	Standing records
1949	37
1950	35
1951	26
1952	23
1953	31
1954	25
1955	61
1956	36
1957	27
1958	36
1959	18
1960	16
1961	23
1962	44
1963	52
1964	40
1965	35
1966	22
1967	19
1968	24
1969	16
1970	26
1971	17
1972	30
1973	14
1974	12
1975	29
1976	26
1977	26
1978	24
1979	15
1980	22
1981	21
1982	20
1983	19
1984	35
1985	25
1986	38
1987	30
1988	44
1989	19
1990	37
1991	18
1992	22
1993	10
1994	18
1995	16
1996	28
1997	33
1998	28
1999	23
2000	26
2001	21
2002	12
2003	15
2004	13
2005	6

All-Time Record Progression

3 new records

3 all-time records were set at Pismo Beach between 5 January 1982 and 3 December 1986. Each dot is a new record.

When Pismo Beach set new all-time records
Date	Kind	Detail
1982-01-05	Record low maximum temperature	Record low maximum temperature 2.2 C (36.0 F)
1982-09-03	Record high maximum temperature	Record high maximum temperature 39.4 C (102.9 F)
1986-12-03	Record low minimum temperature	Record low minimum temperature -6.1 C (21.0 F)

Wettest Day of Each Month

Jan: 131.1 mm (5.2 in)

The wettest day on record for each calendar month at Pismo Beach. The most was 131.1 mm (5.2 in) on 19 January 1969.

Record daily precipitation for each month at Pismo Beach
Month	Record daily precipitation (mm)	Date
Jan	131.1 mm (5.2 in)	19 January 1969
Feb	54.9 mm (2.2 in)	1 February 1960
Mar	65.3 mm (2.6 in)	15 March 1958
Apr	55.9 mm (2.2 in)	1 April 1958
May	63.5 mm (2.5 in)	13 May 1998
Jun	12.4 mm (0.5 in)	16 June 1995
Jul	15.0 mm (0.6 in)	10 July 1950
Aug	6.9 mm (0.27 in)	18 August 1983
Sep	40.9 mm (1.6 in)	30 September 1976
Oct	50.3 mm (2.0 in)	30 October 1996
Nov	57.2 mm (2.3 in)	14 November 1953
Dec	56.1 mm (2.2 in)	24 December 1955

Period of Record Coverage

1949 to 2005

57 years of record at Pismo Beach, 1949 to 2005. 13 years have data for under 90 percent of days and are left out of rankings: 1949, 1965, 1979, 1980, 1984, 1987, 1997, 1998 and others.

Days with data per year at Pismo Beach
Year	Days with data	Share of year	Complete
1949	183	50%	No
1950	358	98%	Yes
1951	354	97%	Yes
1952	351	96%	Yes
1953	357	98%	Yes
1954	358	98%	Yes
1955	361	99%	Yes
1956	363	99%	Yes
1957	365	100%	Yes
1958	364	100%	Yes
1959	363	99%	Yes
1960	366	100%	Yes
1961	364	100%	Yes
1962	362	99%	Yes
1963	362	99%	Yes
1964	366	100%	Yes
1965	300	82%	No
1966	360	99%	Yes
1967	361	99%	Yes
1968	361	99%	Yes
1969	364	100%	Yes
1970	362	99%	Yes
1971	365	100%	Yes
1972	361	99%	Yes
1973	359	98%	Yes
1974	363	99%	Yes
1975	362	99%	Yes
1976	362	99%	Yes
1977	356	98%	Yes
1978	360	99%	Yes
1979	325	89%	No
1980	243	66%	No
1981	363	99%	Yes
1982	344	94%	Yes
1983	362	99%	Yes
1984	329	90%	No
1985	331	91%	Yes
1986	342	94%	Yes
1987	261	72%	No
1988	356	97%	Yes
1989	344	94%	Yes
1990	360	99%	Yes
1991	365	100%	Yes
1992	365	100%	Yes
1993	349	96%	Yes
1994	362	99%	Yes
1995	356	98%	Yes
1996	357	98%	Yes
1997	253	69%	No
1998	230	63%	No
1999	233	64%	No
2000	307	84%	No
2001	298	82%	No
2002	319	87%	No
2003	333	91%	Yes
2004	333	91%	Yes
2005	227	62%	No

Latest Records

Latest records at Pismo Beach
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 November 2005	Pismo Beach, US	daily high min	15.0 C (59.0 F)	1.1 C (2.0 F)	40 years	20 of 100 (Routine)
14 November 2005	Pismo Beach, US	daily high max (Tie)	26.7 C (80.1 F)	tie	56 years	5 of 100 (Routine)
13 November 2005	Pismo Beach, US	daily high max	26.7 C (80.1 F)	1.1 C (2.0 F)	56 years	24 of 100 (Routine)
9 November 2005	Pismo Beach, US	daily low max (Tie)	15.6 C (60.1 F)	tie	56 years	5 of 100 (Routine)
22 October 2005	Pismo Beach, US	monthly low max (Tie)	12.8 C (55.0 F)	tie	51 years	7 of 100 (Routine)
21 October 2005	Pismo Beach, US	daily low max	13.9 C (57.0 F)	1.1 C (2.0 F)	52 years	22 of 100 (Routine)
12 October 2005	Pismo Beach, US	daily low max (Tie)	15.6 C (60.1 F)	tie	28 years	3 of 100 (Routine)
6 October 2005	Pismo Beach, US	daily high min	17.2 C (63.0 F)	2.2 C (4.0 F)	54 years	29 of 100 (Routine)
26 September 2005	Pismo Beach, US	daily rain	3.6 mm (0.14 in)	3.6 mm (0.14 in)	56 years	20 of 100 (Routine)
24 August 2005	Pismo Beach, US	daily rain	0.5 mm (0.02 in)	0.5 mm (0.02 in)	56 years	20 of 100 (Routine)
14 August 2005	Pismo Beach, US	daily high min	16.7 C (62.1 F)	1.7 C (3.1 F)	47 years	28 of 100 (Routine)
14 August 2005	Pismo Beach, US	daily low max (Tie)	17.2 C (63.0 F)	tie	55 years	5 of 100 (Routine)
21 July 2005	Pismo Beach, US	daily high min (Tie)	13.9 C (57.0 F)	tie	48 years	4 of 100 (Routine)
28 April 2005	Pismo Beach, US	daily rain	27.9 mm (1.1 in)	13.9 mm (0.5 in)	22 years	24 of 100 (Routine)
22 March 2005	Pismo Beach, US	daily rain	25.7 mm (1.0 in)	5.9 mm (0.23 in)	40 years	21 of 100 (Routine)
13 March 2005	Pismo Beach, US	daily low max (Tie)	13.3 C (55.9 F)	tie	48 years	4 of 100 (Routine)
8 January 2005	Pismo Beach, US	daily rain	31.8 mm (1.3 in)	15.8 mm (0.6 in)	26 years	23 of 100 (Routine)
27 December 2004	Pismo Beach, US	daily low max (Tie)	12.2 C (54.0 F)	tie	16 years	2 of 100 (Routine)
17 December 2004	Pismo Beach, US	daily high min	15.0 C (59.0 F)	3.9 C (7.0 F)	50 years	32 of 100 (Routine)
29 November 2004	Pismo Beach, US	daily low min	1.7 C (35.1 F)	0.5 C (0.9 F)	10 years	9 of 100 (Routine)

Climate Trend

40 complete years, 1950 to 2004

One stripe for each of 40 complete years at Pismo Beach, 1950 to 2004. Blue stripes are years cooler than the station's own mean of 14.4 C (57.9 F); red stripes are warmer. The coolest year was 1962, at 13.2 C (55.8 F), and the warmest was 1992, at 15.5 C (59.9 F). The strongest colour marks a difference of 1.3 C (2.3 F).

Annual mean temperature at Pismo Beach as warming stripes, 1950 to 2004
Year	Annual mean temperature	Difference from the station mean
1950	14.1 C	-0.31 C
1951	13.8 C	-0.62 C
1952	13.3 C	-1.12 C
1953	14.1 C	-0.34 C
1954	14.4 C	-0.02 C
1955	13.6 C	-0.83 C
1956	13.8 C	-0.58 C
1957	14.4 C	+0.04 C
1958	15.5 C	+1.05 C
1959	15.2 C	+0.83 C
1960	13.9 C	-0.46 C
1961	14.1 C	-0.27 C
1962	13.2 C	-1.20 C
1963	13.5 C	-0.92 C
1964	13.4 C	-1.03 C
1966	14.2 C	-0.20 C
1967	14.5 C	+0.05 C
1968	14.4 C	-0.02 C
1969	14.2 C	-0.18 C
1970	14.3 C	-0.09 C
1971	14.0 C	-0.43 C
1972	15.0 C	+0.62 C
1973	14.4 C	-0.01 C
1974	14.4 C	+0.01 C
1975	13.8 C	-0.57 C
1976	15.5 C	+1.07 C
1977	15.3 C	+0.90 C
1978	14.6 C	+0.19 C
1981	15.0 C	+0.63 C
1983	15.1 C	+0.67 C
1988	13.5 C	-0.89 C
1990	14.1 C	-0.30 C
1991	14.2 C	-0.25 C
1992	15.5 C	+1.08 C
1993	15.4 C	+0.98 C
1994	14.3 C	-0.10 C
1995	15.1 C	+0.67 C
1996	15.3 C	+0.86 C
2003	15.4 C	+0.95 C
2004	14.7 C	+0.28 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1950 to 2004. In Fahrenheit: 0.4 F (0.2 to 0.6) per decade. The slope is a straight line fitted to 40 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Pismo Beach
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.2 C (0.1 to 0.3) per decade	0.4 F (0.2 to 0.6) per decade	1950 to 2004	40	Rise
Mean daily maximum	0.3 C (0.2 to 0.4) per decade	0.5 F (0.3 to 0.8) per decade	1950 to 2004	40	Rise
Mean daily minimum	0.12 C (-0.04 to 0.27) per decade	0.2 F (-0.1 to 0.5) per decade	1950 to 2004	40	Not clearly different from zero

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

1949 to 2006

Yearly extremes at Pismo Beach: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	39.4 C (102.9 F)	1982	35.0 C (95.0 F)	57
Coldest night (TNn)	-6.1 C (21.0 F)	1986	-0.6 C (30.9 F)	57
Wettest day (Rx1day)	131.1 mm (5.2 in)	1969	46.5 mm (1.8 in)	57
Wettest five days (Rx5day)	191.8 mm (7.6 in)	1969	88.0 mm (3.5 in)	57
Longest dry spell (CDD)	210 days	1966	116 days	57

Hottest day (TXx)

The hottest day of the year at Pismo Beach, 1949 to 2006. The record is 39.4 C (102.9 F) in 1982, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at Pismo Beach by year
Year	Hottest day (TXx)
1949	30.6 C (87.1 F)
1950	36.1 C (97.0 F)
1951	35.0 C (95.0 F)
1952	32.2 C (90.0 F)
1953	37.2 C (99.0 F)
1954	33.3 C (91.9 F)
1955	33.9 C (93.0 F)
1956	37.2 C (99.0 F)
1957	36.7 C (98.1 F)
1958	36.7 C (98.1 F)
1959	33.3 C (91.9 F)
1960	31.7 C (89.1 F)
1961	35.6 C (96.1 F)
1962	37.8 C (100.0 F)
1963	28.3 C (82.9 F)
1964	37.2 C (99.0 F)
1965	36.7 C (98.1 F)
1966	37.8 C (100.0 F)
1967	33.3 C (91.9 F)
1968	36.7 C (98.1 F)
1969	34.4 C (93.9 F)
1970	37.8 C (100.0 F)
1971	36.7 C (98.1 F)
1972	38.9 C (102.0 F)
1973	35.0 C (95.0 F)
1974	33.9 C (93.0 F)
1975	33.3 C (91.9 F)
1976	37.2 C (99.0 F)
1977	34.4 C (93.9 F)
1978	37.2 C (99.0 F)
1979	37.2 C (99.0 F)
1980	32.8 C (91.0 F)
1981	36.7 C (98.1 F)
1982	39.4 C (102.9 F)
1983	37.2 C (99.0 F)
1984	35.0 C (95.0 F)
1985	38.9 C (102.0 F)
1986	33.3 C (91.9 F)
1987	32.2 C (90.0 F)
1988	34.4 C (93.9 F)
1989	38.3 C (100.9 F)
1990	35.0 C (95.0 F)
1991	36.7 C (98.1 F)
1992	35.0 C (95.0 F)
1993	35.0 C (95.0 F)
1994	35.6 C (96.1 F)
1995	35.0 C (95.0 F)
1996	36.7 C (98.1 F)
1997	34.4 C (93.9 F)
1998	32.2 C (90.0 F)
1999	27.8 C (82.0 F)
2000	32.2 C (90.0 F)
2001	33.9 C (93.0 F)
2002	34.4 C (93.9 F)
2003	35.6 C (96.1 F)
2004	36.7 C (98.1 F)
2005	32.8 C (91.0 F)
2006	n/a

Coldest night (TNn)

The coldest night of the year at Pismo Beach, 1949 to 2006. The record is -6.1 C (21.0 F) in 1986, marked on the chart; the median year is -0.6 C (30.9 F).

Coldest night (TNn) at Pismo Beach by year
Year	Coldest night (TNn)
1949	-2.2 C (28.0 F)
1950	-4.4 C (24.1 F)
1951	-1.1 C (30.0 F)
1952	-1.1 C (30.0 F)
1953	-1.1 C (30.0 F)
1954	0.0 C (32.0 F)
1955	-1.7 C (28.9 F)
1956	-0.6 C (30.9 F)
1957	-0.6 C (30.9 F)
1958	-1.7 C (28.9 F)
1959	1.1 C (34.0 F)
1960	-3.3 C (26.1 F)
1961	0.6 C (33.1 F)
1962	-1.1 C (30.0 F)
1963	-5.0 C (23.0 F)
1964	-1.7 C (28.9 F)
1965	-1.1 C (30.0 F)
1966	0.0 C (32.0 F)
1967	-0.6 C (30.9 F)
1968	-2.8 C (27.0 F)
1969	-0.6 C (30.9 F)
1970	0.0 C (32.0 F)
1971	-1.7 C (28.9 F)
1972	-1.7 C (28.9 F)
1973	-2.2 C (28.0 F)
1974	-2.2 C (28.0 F)
1975	-4.4 C (24.1 F)
1976	-0.6 C (30.9 F)
1977	-1.7 C (28.9 F)
1978	-1.7 C (28.9 F)
1979	-1.1 C (30.0 F)
1980	1.1 C (34.0 F)
1981	1.1 C (34.0 F)
1982	-0.6 C (30.9 F)
1983	2.8 C (37.0 F)
1984	0.0 C (32.0 F)
1985	0.0 C (32.0 F)
1986	-6.1 C (21.0 F)
1987	-3.3 C (26.1 F)
1988	-2.8 C (27.0 F)
1989	0.0 C (32.0 F)
1990	-4.4 C (24.1 F)
1991	2.2 C (36.0 F)
1992	1.1 C (34.0 F)
1993	0.0 C (32.0 F)
1994	-2.8 C (27.0 F)
1995	1.7 C (35.1 F)
1996	-2.2 C (28.0 F)
1997	0.0 C (32.0 F)
1998	-0.6 C (30.9 F)
1999	-0.6 C (30.9 F)
2000	1.7 C (35.1 F)
2001	1.1 C (34.0 F)
2002	0.6 C (33.1 F)
2003	2.2 C (36.0 F)
2004	1.7 C (35.1 F)
2005	3.3 C (37.9 F)
2006	n/a

Wettest day (Rx1day)

The wettest day of the year at Pismo Beach, 1949 to 2006. The record is 131.1 mm (5.2 in) in 1969, marked on the chart; the median year is 46.5 mm (1.8 in).

Wettest day (Rx1day) at Pismo Beach by year
Year	Wettest day (Rx1day)
1949	25.4 mm (1.0 in)
1950	38.1 mm (1.5 in)
1951	36.3 mm (1.4 in)
1952	55.4 mm (2.2 in)
1953	57.2 mm (2.3 in)
1954	40.6 mm (1.6 in)
1955	56.1 mm (2.2 in)
1956	71.1 mm (2.8 in)
1957	34.5 mm (1.4 in)
1958	65.3 mm (2.6 in)
1959	37.3 mm (1.5 in)
1960	54.9 mm (2.2 in)
1961	33.8 mm (1.3 in)
1962	53.3 mm (2.1 in)
1963	40.4 mm (1.6 in)
1964	31.0 mm (1.2 in)
1965	45.5 mm (1.8 in)
1966	33.5 mm (1.3 in)
1967	45.2 mm (1.8 in)
1968	48.3 mm (1.9 in)
1969	131.1 mm (5.2 in)
1970	45.7 mm (1.8 in)
1971	29.5 mm (1.2 in)
1972	43.2 mm (1.7 in)
1973	69.9 mm (2.8 in)
1974	55.4 mm (2.2 in)
1975	50.8 mm (2.0 in)
1976	44.7 mm (1.8 in)
1977	51.3 mm (2.0 in)
1978	103.1 mm (4.1 in)
1979	28.2 mm (1.1 in)
1980	51.3 mm (2.0 in)
1981	51.3 mm (2.0 in)
1982	50.3 mm (2.0 in)
1983	54.6 mm (2.1 in)
1984	22.9 mm (0.9 in)
1985	28.2 mm (1.1 in)
1986	46.5 mm (1.8 in)
1987	42.4 mm (1.7 in)
1988	47.0 mm (1.9 in)
1989	19.3 mm (0.8 in)
1990	19.8 mm (0.8 in)
1991	58.4 mm (2.3 in)
1992	46.7 mm (1.8 in)
1993	53.3 mm (2.1 in)
1994	33.0 mm (1.3 in)
1995	55.4 mm (2.2 in)
1996	50.3 mm (2.0 in)
1997	50.8 mm (2.0 in)
1998	63.5 mm (2.5 in)
1999	29.7 mm (1.2 in)
2000	54.1 mm (2.1 in)
2001	40.1 mm (1.6 in)
2002	30.7 mm (1.2 in)
2003	34.8 mm (1.4 in)
2004	54.9 mm (2.2 in)
2005	31.8 mm (1.3 in)
2006	n/a

Wettest five days (Rx5day)

The wettest five days of the year at Pismo Beach, 1949 to 2006. The record is 191.8 mm (7.6 in) in 1969, marked on the chart; the median year is 88.0 mm (3.5 in).

Wettest five days (Rx5day) at Pismo Beach by year
Year	Wettest five days (Rx5day)
1949	35.8 mm (1.4 in)
1950	70.1 mm (2.8 in)
1951	91.1 mm (3.6 in)
1952	79.3 mm (3.1 in)
1953	75.2 mm (3.0 in)
1954	58.1 mm (2.3 in)
1955	114.7 mm (4.5 in)
1956	100.6 mm (4.0 in)
1957	40.9 mm (1.6 in)
1958	101.8 mm (4.0 in)
1959	68.9 mm (2.7 in)
1960	65.9 mm (2.6 in)
1961	36.1 mm (1.4 in)
1962	148.9 mm (5.9 in)
1963	90.7 mm (3.6 in)
1964	53.1 mm (2.1 in)
1965	96.4 mm (3.8 in)
1966	83.8 mm (3.3 in)
1967	64.5 mm (2.5 in)
1968	93.7 mm (3.7 in)
1969	191.8 mm (7.6 in)
1970	81.8 mm (3.2 in)
1971	41.9 mm (1.6 in)
1972	60.3 mm (2.4 in)
1973	108.3 mm (4.3 in)
1974	125.7 mm (4.9 in)
1975	88.4 mm (3.5 in)
1976	106.6 mm (4.2 in)
1977	110.7 mm (4.4 in)
1978	133.3 mm (5.2 in)
1979	44.8 mm (1.8 in)
1980	187.5 mm (7.4 in)
1981	90.6 mm (3.6 in)
1982	108.0 mm (4.3 in)
1983	103.8 mm (4.1 in)
1984	35.6 mm (1.4 in)
1985	43.2 mm (1.7 in)
1986	115.8 mm (4.6 in)
1987	88.0 mm (3.5 in)
1988	69.8 mm (2.7 in)
1989	22.1 mm (0.9 in)
1990	41.6 mm (1.6 in)
1991	153.7 mm (6.1 in)
1992	132.7 mm (5.2 in)
1993	101.3 mm (4.0 in)
1994	63.0 mm (2.5 in)
1995	94.2 mm (3.7 in)
1996	110.3 mm (4.3 in)
1997	103.9 mm (4.1 in)
1998	105.9 mm (4.2 in)
1999	56.8 mm (2.2 in)
2000	118.9 mm (4.7 in)
2001	81.8 mm (3.2 in)
2002	60.5 mm (2.4 in)
2003	38.4 mm (1.5 in)
2004	61.9 mm (2.4 in)
2005	81.0 mm (3.2 in)
2006	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Pismo Beach, 1949 to 2006. The record is 210 days in 1966, marked on the chart; the median year is 116 days.

Longest dry spell (CDD) at Pismo Beach by year
Year	Longest dry spell (CDD)
1949	110 days
1950	56 days
1951	78 days
1952	102 days
1953	100 days
1954	75 days
1955	99 days
1956	145 days
1957	120 days
1958	107 days
1959	139 days
1960	161 days
1961	101 days
1962	137 days
1963	85 days
1964	82 days
1965	104 days
1966	210 days
1967	111 days
1968	150 days
1969	54 days
1970	132 days
1971	124 days
1972	69 days
1973	112 days
1974	201 days
1975	204 days
1976	150 days
1977	169 days
1978	130 days
1979	84 days
1980	61 days
1981	191 days
1982	78 days
1983	103 days
1984	174 days
1985	143 days
1986	192 days
1987	68 days
1988	189 days
1989	128 days
1990	116 days
1991	67 days
1992	98 days
1993	127 days
1994	127 days
1995	124 days
1996	166 days
1997	150 days
1998	97 days
1999	111 days
2000	95 days
2001	115 days
2002	169 days
2003	180 days
2004	203 days
2005	53 days
2006	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

48 years, 1950 to 2004

A day with at least 44.1 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 105.7 mm (4.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Pismo Beach: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	44.1 mm (1.7 in)
5 years	59.8 mm (2.4 in)
10 years	70.6 mm (2.8 in)
25 years	84.5 mm (3.3 in)
50 years	95.0 mm (3.7 in)	Longer than the 48 years of record
100 years	105.7 mm (4.2 in)	Longer than the 48 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, 48 years of values from 1950 to 2004.

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: 131.1 mm (5.2 in) in 1969; 103.1 mm (4.1 in) in 1978; 71.1 mm (2.8 in) in 1956.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

Data for Pismo Beach standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Pismo Beach 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 2026-10-15 (15 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).