Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at San Pedro. The lines show the 2026 daily maximum and minimum. 16 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at San Pedro, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
35.5 C (95.9 F)
16.5 C (61.7 F)
34.2 C (93.6 F)
19.3 C (66.7 F)
Feb
35.7 C (96.3 F)
16.4 C (61.5 F)
35.6 C (96.1 F)
21.4 C (70.5 F)
Mar
35.1 C (95.2 F)
19.5 C (67.1 F)
33.9 C (93.0 F)
22.4 C (72.3 F)
Apr
37.0 C (98.6 F)
20.0 C (68.0 F)
33.8 C (92.8 F)
22.2 C (72.0 F)
May
35.0 C (95.0 F)
18.9 C (66.0 F)
33.0 C (91.4 F)
21.5 C (70.7 F)
Jun
35.0 C (95.0 F)
18.0 C (64.4 F)
31.2 C (88.2 F)
22.0 C (71.6 F)
Jul
31.1 C (88.0 F)
17.5 C (63.5 F)
29.4 C (84.9 F)
20.5 C (68.9 F)
Aug
31.2 C (88.2 F)
18.6 C (65.5 F)
28.5 C (83.3 F)
21.0 C (69.8 F)
Sep
32.0 C (89.6 F)
18.5 C (65.3 F)
n/a
n/a
Oct
33.6 C (92.5 F)
19.4 C (66.9 F)
n/a
n/a
Nov
34.0 C (93.2 F)
20.3 C (68.5 F)
n/a
n/a
Dec
35.1 C (95.2 F)
15.5 C (59.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at San Pedro still stand. 2010 holds the most, with 92.
Standing records at San Pedro by the year they were set
Year set
Standing records
1978
20
1979
39
1980
58
1981
27
1982
48
1983
45
1984
28
1985
40
1986
54
1987
37
1988
27
1989
36
1990
22
1991
15
1992
23
1993
23
1994
10
1995
16
1996
29
1997
25
1998
42
1999
31
2000
34
2001
9
2002
53
2003
12
2004
3
2005
7
2006
10
2007
13
2008
17
2009
38
2010
92
2011
29
2012
31
2013
47
2014
26
2015
30
2016
33
2017
28
2018
21
2019
16
2020
41
2021
42
2022
15
2023
51
2024
49
2025
22
All-Time Record Progression
1 new records
1 all-time records were set at San Pedro between 19 April 2024 and 19 April 2024. Each dot is a new record.
When San Pedro set new all-time records
Date
Kind
Detail
2024-04-19
Record high minimum temperature
Record high minimum temperature 28.7 C (83.7 F)
Wettest Day of Each Month
May: 335.0 mm (13.2 in)
The wettest day on record for each calendar month at San Pedro. The most was 335.0 mm (13.2 in) on 26 May 1982.
Record daily precipitation for each month at San Pedro
Month
Record daily precipitation (mm)
Date
Jan
35.1 mm (1.4 in)
11 January 2010
Feb
71.9 mm (2.8 in)
27 February 1996
Mar
91.9 mm (3.6 in)
17 March 1986
Apr
166.1 mm (6.5 in)
10 April 1982
May
335.0 mm (13.2 in)
26 May 1982
Jun
249.9 mm (9.8 in)
11 June 2025
Jul
201.9 mm (7.9 in)
8 July 1983
Aug
120.9 mm (4.8 in)
18 August 2010
Sep
91.9 mm (3.6 in)
12 September 1986
Oct
159.0 mm (6.3 in)
29 October 1987
Nov
134.9 mm (5.3 in)
23 November 1989
Dec
191.3 mm (7.5 in)
3 December 2010
Period of Record Coverage
1978 to 2025
Complete yearUnder 90 percent of days
48 years of record at San Pedro, 1978 to 2025. 46 years have data for under 90 percent of days and are left out of rankings: 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985 and others.
Yearly extremes at San Pedro: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.0 C (98.6 F)
1979
34.0 C (93.2 F)
48
Coldest night (TNn)
15.5 C (59.9 F)
2000
19.1 C (66.4 F)
42
Wettest day (Rx1day)
335.0 mm (13.2 in)
1982
99.1 mm (3.9 in)
43
Wettest five days (Rx5day)
597.9 mm (23.5 in)
1982
152.8 mm (6.0 in)
39
Longest dry spell (CDD)
16 days
1981
4 days
43
Hottest day (TXx)
The hottest day of the year at San Pedro, 1978 to 2025. The record is 37.0 C (98.6 F) in 1979, marked on the chart; the median year is 34.0 C (93.2 F).
Hottest day (TXx) at San Pedro by year
Year
Hottest day (TXx)
1978
31.0 C (87.8 F)
1979
37.0 C (98.6 F)
1980
35.0 C (95.0 F)
1981
35.0 C (95.0 F)
1982
33.7 C (92.7 F)
1983
35.7 C (96.3 F)
1984
33.8 C (92.8 F)
1985
35.0 C (95.0 F)
1986
34.5 C (94.1 F)
1987
33.0 C (91.4 F)
1988
33.6 C (92.5 F)
1989
33.0 C (91.4 F)
1990
33.7 C (92.7 F)
1991
33.8 C (92.8 F)
1992
33.5 C (92.3 F)
1993
32.7 C (90.9 F)
1994
34.2 C (93.6 F)
1995
33.5 C (92.3 F)
1996
34.0 C (93.2 F)
1997
34.0 C (93.2 F)
1998
34.2 C (93.6 F)
1999
33.5 C (92.3 F)
2000
34.1 C (93.4 F)
2001
33.0 C (91.4 F)
2002
32.8 C (91.0 F)
2003
33.6 C (92.5 F)
2004
34.0 C (93.2 F)
2005
33.6 C (92.5 F)
2006
36.0 C (96.8 F)
2007
33.7 C (92.7 F)
2008
34.0 C (93.2 F)
2009
34.0 C (93.2 F)
2010
34.9 C (94.8 F)
2011
35.0 C (95.0 F)
2012
35.0 C (95.0 F)
2013
35.5 C (95.9 F)
2014
34.5 C (94.1 F)
2015
34.2 C (93.6 F)
2016
34.3 C (93.7 F)
2017
34.7 C (94.5 F)
2018
33.5 C (92.3 F)
2019
32.2 C (90.0 F)
2020
33.2 C (91.8 F)
2021
34.7 C (94.5 F)
2022
33.2 C (91.8 F)
2023
35.1 C (95.2 F)
2024
35.0 C (95.0 F)
2025
35.6 C (96.1 F)
Coldest night (TNn)
The coldest night of the year at San Pedro, 1978 to 2025. The record is 15.5 C (59.9 F) in 2000, marked on the chart; the median year is 19.1 C (66.4 F).
Coldest night (TNn) at San Pedro by year
Year
Coldest night (TNn)
1978
20.0 C (68.0 F)
1979
20.0 C (68.0 F)
1980
18.0 C (64.4 F)
1981
19.0 C (66.2 F)
1982
17.6 C (63.7 F)
1983
17.5 C (63.5 F)
1984
19.4 C (66.9 F)
1985
17.5 C (63.5 F)
1986
17.2 C (63.0 F)
1987
17.5 C (63.5 F)
1988
16.0 C (60.8 F)
1989
16.5 C (61.7 F)
1990
18.8 C (65.8 F)
1991
18.2 C (64.8 F)
1992
19.3 C (66.7 F)
1993
17.1 C (62.8 F)
1994
19.2 C (66.6 F)
1995
17.2 C (63.0 F)
1996
20.5 C (68.9 F)
1997
20.2 C (68.4 F)
1998
19.2 C (66.6 F)
1999
16.6 C (61.9 F)
2000
15.5 C (59.9 F)
2001
16.4 C (61.5 F)
2002
18.0 C (64.4 F)
2003
n/a
2004
n/a
2005
n/a
2006
n/a
2007
n/a
2008
n/a
2009
19.8 C (67.6 F)
2010
19.5 C (67.1 F)
2011
20.3 C (68.5 F)
2012
19.0 C (66.2 F)
2013
16.9 C (62.4 F)
2014
20.0 C (68.0 F)
2015
19.5 C (67.1 F)
2016
19.9 C (67.8 F)
2017
19.0 C (66.2 F)
2018
19.9 C (67.8 F)
2019
20.2 C (68.4 F)
2020
18.5 C (65.3 F)
2021
20.8 C (69.4 F)
2022
20.6 C (69.1 F)
2023
19.5 C (67.1 F)
2024
20.5 C (68.9 F)
2025
19.3 C (66.7 F)
Wettest day (Rx1day)
The wettest day of the year at San Pedro, 1978 to 2025. The record is 335.0 mm (13.2 in) in 1982, marked on the chart; the median year is 99.1 mm (3.9 in).
Wettest day (Rx1day) at San Pedro by year
Year
Wettest day (Rx1day)
1978
47.0 mm (1.9 in)
1979
150.1 mm (5.9 in)
1980
130.0 mm (5.1 in)
1981
190.0 mm (7.5 in)
1982
335.0 mm (13.2 in)
1983
201.9 mm (7.9 in)
1984
94.0 mm (3.7 in)
1985
99.1 mm (3.9 in)
1986
91.9 mm (3.6 in)
1987
159.0 mm (6.3 in)
1988
32.0 mm (1.3 in)
1989
162.1 mm (6.4 in)
1990
50.0 mm (2.0 in)
1991
115.1 mm (4.5 in)
1992
41.9 mm (1.6 in)
1993
134.9 mm (5.3 in)
1994
147.1 mm (5.8 in)
1995
99.1 mm (3.9 in)
1996
86.1 mm (3.4 in)
1997
172.0 mm (6.8 in)
1998
113.0 mm (4.4 in)
1999
47.0 mm (1.9 in)
2000
97.0 mm (3.8 in)
2001
27.9 mm (1.1 in)
2002
128.0 mm (5.0 in)
2003
n/a
2004
0.0 mm (0.00 in)
2005
n/a
2006
n/a
2007
n/a
2008
n/a
2009
95.0 mm (3.7 in)
2010
191.3 mm (7.5 in)
2011
89.9 mm (3.5 in)
2012
65.0 mm (2.6 in)
2013
191.0 mm (7.5 in)
2014
135.9 mm (5.4 in)
2015
174.0 mm (6.9 in)
2016
86.1 mm (3.4 in)
2017
93.0 mm (3.7 in)
2018
95.0 mm (3.7 in)
2019
58.9 mm (2.3 in)
2020
108.0 mm (4.3 in)
2021
109.0 mm (4.3 in)
2022
36.1 mm (1.4 in)
2023
200.9 mm (7.9 in)
2024
97.0 mm (3.8 in)
2025
249.9 mm (9.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at San Pedro, 1978 to 2025. The record is 597.9 mm (23.5 in) in 1982, marked on the chart; the median year is 152.8 mm (6.0 in).
Wettest five days (Rx5day) at San Pedro by year
Year
Wettest five days (Rx5day)
1978
57.9 mm (2.3 in)
1979
202.1 mm (8.0 in)
1980
134.0 mm (5.3 in)
1981
292.9 mm (11.5 in)
1982
597.9 mm (23.5 in)
1983
206.9 mm (8.1 in)
1984
168.6 mm (6.6 in)
1985
157.9 mm (6.2 in)
1986
152.8 mm (6.0 in)
1987
111.8 mm (4.4 in)
1988
68.1 mm (2.7 in)
1989
268.0 mm (10.6 in)
1990
97.3 mm (3.8 in)
1991
137.9 mm (5.4 in)
1992
76.2 mm (3.0 in)
1993
140.9 mm (5.5 in)
1994
82.0 mm (3.2 in)
1995
159.1 mm (6.3 in)
1996
132.1 mm (5.2 in)
1997
322.8 mm (12.7 in)
1998
106.2 mm (4.2 in)
1999
n/a
2000
n/a
2001
n/a
2002
52.0 mm (2.0 in)
2003
n/a
2004
n/a
2005
n/a
2006
n/a
2007
n/a
2008
n/a
2009
120.1 mm (4.7 in)
2010
176.5 mm (6.9 in)
2011
117.9 mm (4.6 in)
2012
121.9 mm (4.8 in)
2013
331.0 mm (13.0 in)
2014
174.0 mm (6.9 in)
2015
269.8 mm (10.6 in)
2016
219.2 mm (8.6 in)
2017
182.2 mm (7.2 in)
2018
184.9 mm (7.3 in)
2019
68.9 mm (2.7 in)
2020
121.2 mm (4.8 in)
2021
177.1 mm (7.0 in)
2022
49.0 mm (1.9 in)
2023
245.6 mm (9.7 in)
2024
108.9 mm (4.3 in)
2025
405.0 mm (15.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at San Pedro, 1978 to 2025. The record is 16 days in 1981, marked on the chart; the median year is 4 days.
Longest dry spell (CDD) at San Pedro by year
Year
Longest dry spell (CDD)
1978
13 days
1979
11 days
1980
11 days
1981
16 days
1982
4 days
1983
4 days
1984
3 days
1985
3 days
1986
4 days
1987
4 days
1988
3 days
1989
4 days
1990
4 days
1991
2 days
1992
4 days
1993
4 days
1994
3 days
1995
3 days
1996
3 days
1997
4 days
1998
7 days
1999
3 days
2000
2 days
2001
1 day
2002
3 days
2003
n/a
2004
1 day
2005
n/a
2006
n/a
2007
n/a
2008
n/a
2009
6 days
2010
3 days
2011
3 days
2012
4 days
2013
4 days
2014
4 days
2015
7 days
2016
4 days
2017
3 days
2018
2 days
2019
4 days
2020
3 days
2021
5 days
2022
3 days
2023
5 days
2024
4 days
2025
10 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 Pedro standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Pedro 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.