San Clemente Is Naas Weather Records (USW00093117)

Record envelope, standing records and threshold days for San Clemente Is Naas (USW00093117), California, United States, with 81 years of record.

Key Facts for San Clemente Is Naas

San Clemente Is Naas (USW00093117) is a weather station in California, United States at 33.02 latitude and -118.59 longitude, 56 m (182 ft) above sea level.
The station reports from 1945 to 2025, 81 years of record.
1,464 records set at San Clemente Is Naas still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: California, United States, 33.02 latitude, -118.59 longitude.
Elevation: 56 m (182 ft).
Period of record: 1945 to 2025, 81 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

13 days at or beyond a record

The band shows the record high and record low for each calendar day at San Clemente Is Naas. The lines show the 2026 daily maximum and minimum. 13 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at San Clemente Is Naas, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	28.9 C (84.0 F)	2.2 C (36.0 F)	14.4 C (57.9 F)	8.9 C (48.0 F)
Feb	26.7 C (80.1 F)	4.4 C (39.9 F)	22.8 C (73.0 F)	9.4 C (48.9 F)
Mar	30.0 C (86.0 F)	3.9 C (39.0 F)	21.1 C (70.0 F)	7.8 C (46.0 F)
Apr	31.1 C (88.0 F)	5.0 C (41.0 F)	25.6 C (78.1 F)	10.0 C (50.0 F)
May	30.0 C (86.0 F)	6.7 C (44.1 F)	22.2 C (72.0 F)	11.1 C (52.0 F)
Jun	32.2 C (90.0 F)	10.0 C (50.0 F)	21.7 C (71.1 F)	12.2 C (54.0 F)
Jul	30.0 C (86.0 F)	11.1 C (52.0 F)	21.1 C (70.0 F)	12.2 C (54.0 F)
Aug	29.4 C (84.9 F)	12.2 C (54.0 F)	25.6 C (78.1 F)	13.3 C (55.9 F)
Sep	35.6 C (96.1 F)	11.1 C (52.0 F)	23.9 C (75.0 F)	16.7 C (62.1 F)
Oct	34.4 C (93.9 F)	6.7 C (44.1 F)	25.6 C (78.1 F)	11.7 C (53.1 F)
Nov	32.2 C (90.0 F)	5.0 C (41.0 F)	21.7 C (71.1 F)	9.0 C (48.2 F)
Dec	26.1 C (79.0 F)	3.3 C (37.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at San Clemente Is Naas still stand. 1946 holds the most, with 211.

Standing records at San Clemente Is Naas by the year they were set
Year set	Standing records
1945	176
1946	211
1963	21
1964	35
1965	43
1966	24
1967	35
1968	42
1969	64
1970	57
1971	61
1972	62
1973	29
1974	35
1975	42
1976	43
1977	23
1978	55
1979	49
1980	43
1981	53
1982	28
1983	53
1984	48
1985	38
1986	32
1987	26
1988	23
2025	13

Wettest Day of Each Month

Mar: 126.5 mm (5.0 in)

The wettest day on record for each calendar month at San Clemente Is Naas. The most was 126.5 mm (5.0 in) on 1 March 1983.

Record daily precipitation for each month at San Clemente Is Naas
Month	Record daily precipitation (mm)	Date
Jan	36.1 mm (1.4 in)	22 January 1967
Feb	49.3 mm (1.9 in)	13 February 1980
Mar	126.5 mm (5.0 in)	1 March 1983
Apr	51.6 mm (2.0 in)	8 April 1975
May	27.2 mm (1.1 in)	8 May 1977
Jun	7.6 mm (0.30 in)	27 June 1945
Jul	8.9 mm (0.35 in)	26 July 1967
Aug	51.3 mm (2.0 in)	17 August 1977
Sep	48.3 mm (1.9 in)	5 September 1978
Oct	20.3 mm (0.8 in)	31 October 1987
Nov	35.8 mm (1.4 in)	22 November 1965
Dec	43.7 mm (1.7 in)	4 December 1974

Period of Record Coverage

1945 to 2025

30 years of record at San Clemente Is Naas, 1945 to 2025. 9 years have data for under 90 percent of days and are left out of rankings: 1945, 1946, 1963, 1979, 1986, 1987, 1988, 1989 and others.

Days with data per year at San Clemente Is Naas
Year	Days with data	Share of year	Complete
1945	274	75%	No
1946	267	73%	No
1963	262	72%	No
1964	350	96%	Yes
1965	340	93%	Yes
1966	355	97%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	353	97%	Yes
1971	349	96%	Yes
1972	364	99%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	350	96%	Yes
1979	322	88%	No
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	358	98%	Yes
1986	323	88%	No
1987	270	74%	No
1988	262	72%	No
1989	24	7%	No
2025	227	62%	No

Latest Records

No records were set at this station in the latest data.

Climate Trend

17 complete years, 1966 to 1984

One stripe for each of 17 complete years at San Clemente Is Naas, 1966 to 1984. Blue stripes are years cooler than the station's own mean of 16.0 C (60.8 F); red stripes are warmer. The coolest year was 1975, at 14.8 C (58.6 F), and the warmest was 1983, at 17.0 C (62.6 F). The strongest colour marks a difference of 1.3 C (2.3 F).

Annual mean temperature at San Clemente Is Naas as warming stripes, 1966 to 1984
Year	Annual mean temperature	Difference from the station mean
1966	15.6 C	-0.42 C
1967	15.8 C	-0.19 C
1968	15.8 C	-0.21 C
1969	15.9 C	-0.13 C
1970	16.6 C	+0.58 C
1972	16.2 C	+0.19 C
1973	15.5 C	-0.48 C
1974	15.6 C	-0.35 C
1975	14.8 C	-1.22 C
1976	16.4 C	+0.39 C
1977	15.6 C	-0.43 C
1978	16.3 C	+0.27 C
1980	16.2 C	+0.23 C
1981	16.3 C	+0.32 C
1982	16.0 C	+0.01 C
1983	17.0 C	+1.00 C
1984	16.4 C	+0.44 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1945 to 2026

Yearly extremes at San Clemente Is Naas: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.6 C (96.1 F)	1978	31.7 C (89.1 F)	31
Coldest night (TNn)	2.2 C (36.0 F)	1976	5.6 C (42.1 F)	31
Wettest day (Rx1day)	126.5 mm (5.0 in)	1983	22.6 mm (0.9 in)	30
Wettest five days (Rx5day)	166.4 mm (6.6 in)	1983	34.2 mm (1.3 in)	29
Longest dry spell (CDD)	268 days	1970	140 days	30

Hottest day (TXx)

The hottest day of the year at San Clemente Is Naas, 1945 to 2026. The record is 35.6 C (96.1 F) in 1978, marked on the chart; the median year is 31.7 C (89.1 F).

Hottest day (TXx) at San Clemente Is Naas by year
Year	Hottest day (TXx)
1945	31.1 C (88.0 F)
1946	28.9 C (84.0 F)
1963	35.0 C (95.0 F)
1964	30.6 C (87.1 F)
1965	34.4 C (93.9 F)
1966	32.2 C (90.0 F)
1967	32.8 C (91.0 F)
1968	31.1 C (88.0 F)
1969	25.0 C (77.0 F)
1970	33.3 C (91.9 F)
1971	34.4 C (93.9 F)
1972	31.7 C (89.1 F)
1973	33.9 C (93.0 F)
1974	30.6 C (87.1 F)
1975	33.3 C (91.9 F)
1976	32.2 C (90.0 F)
1977	30.0 C (86.0 F)
1978	35.6 C (96.1 F)
1979	35.6 C (96.1 F)
1980	27.8 C (82.0 F)
1981	32.2 C (90.0 F)
1982	30.0 C (86.0 F)
1983	31.1 C (88.0 F)
1984	32.2 C (90.0 F)
1985	31.7 C (89.1 F)
1986	27.8 C (82.0 F)
1987	33.9 C (93.0 F)
1988	30.0 C (86.0 F)
1989	20.6 C (69.1 F)
2025	25.6 C (78.1 F)
2026	30.6 C (87.1 F)

Coldest night (TNn)

The coldest night of the year at San Clemente Is Naas, 1945 to 2026. The record is 2.2 C (36.0 F) in 1976, marked on the chart; the median year is 5.6 C (42.1 F).

Coldest night (TNn) at San Clemente Is Naas by year
Year	Coldest night (TNn)
1945	5.0 C (41.0 F)
1946	5.0 C (41.0 F)
1963	8.9 C (48.0 F)
1964	5.0 C (41.0 F)
1965	7.8 C (46.0 F)
1966	6.7 C (44.1 F)
1967	6.1 C (43.0 F)
1968	6.7 C (44.1 F)
1969	7.2 C (45.0 F)
1970	6.1 C (43.0 F)
1971	4.4 C (39.9 F)
1972	3.9 C (39.0 F)
1973	6.7 C (44.1 F)
1974	5.0 C (41.0 F)
1975	3.9 C (39.0 F)
1976	2.2 C (36.0 F)
1977	5.6 C (42.1 F)
1978	4.4 C (39.9 F)
1979	3.9 C (39.0 F)
1980	5.6 C (42.1 F)
1981	5.0 C (41.0 F)
1982	3.3 C (37.9 F)
1983	5.6 C (42.1 F)
1984	4.4 C (39.9 F)
1985	4.4 C (39.9 F)
1986	6.1 C (43.0 F)
1987	6.1 C (43.0 F)
1988	6.7 C (44.1 F)
1989	7.2 C (45.0 F)
2025	7.8 C (46.0 F)
2026	17.8 C (64.0 F)

Wettest day (Rx1day)

The wettest day of the year at San Clemente Is Naas, 1945 to 2026. The record is 126.5 mm (5.0 in) in 1983, marked on the chart; the median year is 22.6 mm (0.9 in).

Wettest day (Rx1day) at San Clemente Is Naas by year
Year	Wettest day (Rx1day)
1945	37.8 mm (1.5 in)
1946	19.1 mm (0.8 in)
1963	25.1 mm (1.0 in)
1964	9.4 mm (0.37 in)
1965	35.8 mm (1.4 in)
1966	21.1 mm (0.8 in)
1967	36.1 mm (1.4 in)
1968	18.0 mm (0.7 in)
1969	26.4 mm (1.0 in)
1970	15.7 mm (0.6 in)
1971	12.7 mm (0.5 in)
1972	16.5 mm (0.6 in)
1973	15.2 mm (0.6 in)
1974	43.7 mm (1.7 in)
1975	51.6 mm (2.0 in)
1976	28.4 mm (1.1 in)
1977	51.3 mm (2.0 in)
1978	48.3 mm (1.9 in)
1979	19.8 mm (0.8 in)
1980	49.3 mm (1.9 in)
1981	40.6 mm (1.6 in)
1982	20.8 mm (0.8 in)
1983	126.5 mm (5.0 in)
1984	24.1 mm (0.9 in)
1985	15.7 mm (0.6 in)
1986	24.9 mm (1.0 in)
1987	20.3 mm (0.8 in)
1988	17.5 mm (0.7 in)
1989	16.5 mm (0.6 in)
2025	n/a
2026	4.3 mm (0.17 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Clemente Is Naas, 1945 to 2026. The record is 166.4 mm (6.6 in) in 1983, marked on the chart; the median year is 34.2 mm (1.3 in).

Wettest five days (Rx5day) at San Clemente Is Naas by year
Year	Wettest five days (Rx5day)
1945	77.5 mm (3.1 in)
1946	45.6 mm (1.8 in)
1963	28.2 mm (1.1 in)
1964	13.0 mm (0.5 in)
1965	84.1 mm (3.3 in)
1966	52.0 mm (2.0 in)
1967	51.3 mm (2.0 in)
1968	18.0 mm (0.7 in)
1969	76.7 mm (3.0 in)
1970	26.4 mm (1.0 in)
1971	13.0 mm (0.5 in)
1972	29.0 mm (1.1 in)
1973	27.3 mm (1.1 in)
1974	61.6 mm (2.4 in)
1975	59.0 mm (2.3 in)
1976	34.2 mm (1.3 in)
1977	64.0 mm (2.5 in)
1978	62.3 mm (2.5 in)
1979	33.2 mm (1.3 in)
1980	76.0 mm (3.0 in)
1981	59.1 mm (2.3 in)
1982	38.4 mm (1.5 in)
1983	166.4 mm (6.6 in)
1984	33.0 mm (1.3 in)
1985	23.6 mm (0.9 in)
1986	33.2 mm (1.3 in)
1987	31.8 mm (1.3 in)
1988	17.5 mm (0.7 in)
1989	22.9 mm (0.9 in)
2025	n/a
2026	n/a

Longest dry spell (CDD)

The longest dry spell of the year at San Clemente Is Naas, 1945 to 2026. The record is 268 days in 1970, marked on the chart; the median year is 140 days.

Longest dry spell (CDD) at San Clemente Is Naas by year
Year	Longest dry spell (CDD)
1945	67 days
1946	122 days
1963	139 days
1964	205 days
1965	215 days
1966	152 days
1967	78 days
1968	211 days
1969	117 days
1970	268 days
1971	167 days
1972	122 days
1973	200 days
1974	186 days
1975	176 days
1976	110 days
1977	125 days
1978	141 days
1979	123 days
1980	154 days
1981	163 days
1982	158 days
1983	98 days
1984	158 days
1985	124 days
1986	170 days
1987	36 days
1988	40 days
1989	29 days
2025	n/a
2026	2 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.

Download the Data

Data for San Clemente Is Naas standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Clemente Is Naas 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 2026-10-16 (16 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).