Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at San Joaquin. 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 San Joaquin, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
37.1 C (98.8 F)
17.8 C (64.0 F)
n/a
n/a
Feb
36.0 C (96.8 F)
18.5 C (65.3 F)
n/a
n/a
Mar
36.2 C (97.2 F)
17.1 C (62.8 F)
n/a
n/a
Apr
37.2 C (99.0 F)
13.8 C (56.8 F)
n/a
n/a
May
35.8 C (96.4 F)
9.5 C (49.1 F)
n/a
n/a
Jun
37.5 C (99.5 F)
8.4 C (47.1 F)
n/a
n/a
Jul
37.4 C (99.3 F)
6.8 C (44.2 F)
n/a
n/a
Aug
43.5 C (110.3 F)
4.1 C (39.4 F)
n/a
n/a
Sep
40.2 C (104.4 F)
9.3 C (48.7 F)
n/a
n/a
Oct
41.1 C (106.0 F)
13.0 C (55.4 F)
n/a
n/a
Nov
40.2 C (104.4 F)
15.2 C (59.4 F)
n/a
n/a
Dec
37.3 C (99.1 F)
18.4 C (65.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at San Joaquin still stand. 2010 holds the most, with 103.
Standing records at San Joaquin by the year they were set
Year set
Standing records
1973
4
1974
2
1976
1
1977
3
1979
1
1981
1
1982
9
1983
44
1984
1
1985
12
1986
7
1987
10
1988
28
1989
32
1990
27
1991
27
1992
43
1993
39
1994
43
1995
49
1996
35
1997
39
1998
31
1999
8
2000
15
2001
23
2002
32
2003
35
2004
25
2005
59
2006
39
2007
53
2008
36
2009
43
2010
103
2011
40
2012
41
2013
43
2014
45
2015
28
2016
68
2017
41
2018
39
2019
10
2020
22
2021
30
2022
15
2023
52
2024
31
Wettest Day of Each Month
Apr: 380.0 mm (15.0 in)
The wettest day on record for each calendar month at San Joaquin. The most was 380.0 mm (15.0 in) on 20 April 1978.
Record daily precipitation for each month at San Joaquin
Month
Record daily precipitation (mm)
Date
Jan
122.9 mm (4.8 in)
16 January 2006
Feb
146.1 mm (5.8 in)
14 February 2006
Mar
264.9 mm (10.4 in)
10 March 1982
Apr
380.0 mm (15.0 in)
20 April 1978
May
54.1 mm (2.1 in)
4 May 2007
Jun
54.4 mm (2.1 in)
9 June 2019
Jul
45.0 mm (1.8 in)
11 July 2000
Aug
74.9 mm (2.9 in)
29 August 2006
Sep
138.9 mm (5.5 in)
15 September 2010
Oct
149.1 mm (5.9 in)
22 October 2006
Nov
157.0 mm (6.2 in)
21 November 1999
Dec
172.2 mm (6.8 in)
21 December 2013
Period of Record Coverage
1981 to 2024
Complete yearUnder 90 percent of days
43 years of record at San Joaquin, 1981 to 2024. 37 years have data for under 90 percent of days and are left out of rankings: 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988 and others.
Yearly extremes at San Joaquin: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.5 C (110.3 F)
1988
38.2 C (100.8 F)
43
Coldest night (TNn)
4.1 C (39.4 F)
2019
9.7 C (49.5 F)
52
Wettest day (Rx1day)
380.0 mm (15.0 in)
1978
89.9 mm (3.5 in)
52
Wettest five days (Rx5day)
433.3 mm (17.1 in)
2013
139.7 mm (5.5 in)
45
Longest dry spell (CDD)
20 days
1981
1 day
51
Hottest day (TXx)
The hottest day of the year at San Joaquin, 1973 to 2024. The record is 43.5 C (110.3 F) in 1988, marked on the chart; the median year is 38.2 C (100.8 F).
Hottest day (TXx) at San Joaquin by year
Year
Hottest day (TXx)
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
30.0 C (86.0 F)
1982
33.8 C (92.8 F)
1983
38.8 C (101.8 F)
1984
36.0 C (96.8 F)
1985
35.4 C (95.7 F)
1986
36.2 C (97.2 F)
1987
38.2 C (100.8 F)
1988
43.5 C (110.3 F)
1989
38.6 C (101.5 F)
1990
37.8 C (100.0 F)
1991
37.7 C (99.9 F)
1992
35.8 C (96.4 F)
1993
37.6 C (99.7 F)
1994
37.5 C (99.5 F)
1995
39.6 C (103.3 F)
1996
37.0 C (98.6 F)
1997
37.8 C (100.0 F)
1998
26.0 C (78.8 F)
1999
n/a
2000
35.3 C (95.5 F)
2001
37.7 C (99.9 F)
2002
38.0 C (100.4 F)
2003
37.1 C (98.8 F)
2004
38.2 C (100.8 F)
2005
39.0 C (102.2 F)
2006
38.2 C (100.8 F)
2007
39.2 C (102.6 F)
2008
38.5 C (101.3 F)
2009
40.1 C (104.2 F)
2010
39.5 C (103.1 F)
2011
38.4 C (101.1 F)
2012
38.4 C (101.1 F)
2013
38.3 C (100.9 F)
2014
38.3 C (100.9 F)
2015
40.2 C (104.4 F)
2016
38.4 C (101.1 F)
2017
38.3 C (100.9 F)
2018
39.3 C (102.7 F)
2019
34.6 C (94.3 F)
2020
40.2 C (104.4 F)
2021
39.6 C (103.3 F)
2022
38.8 C (101.8 F)
2023
41.1 C (106.0 F)
2024
35.8 C (96.4 F)
Coldest night (TNn)
The coldest night of the year at San Joaquin, 1973 to 2024. The record is 4.1 C (39.4 F) in 2019, marked on the chart; the median year is 9.7 C (49.5 F).
Coldest night (TNn) at San Joaquin by year
Year
Coldest night (TNn)
1973
20.0 C (68.0 F)
1974
16.0 C (60.8 F)
1975
15.0 C (59.0 F)
1976
14.0 C (57.2 F)
1977
19.0 C (66.2 F)
1978
20.0 C (68.0 F)
1979
13.0 C (55.4 F)
1980
16.0 C (60.8 F)
1981
19.0 C (66.2 F)
1982
14.8 C (58.6 F)
1983
8.9 C (48.0 F)
1984
12.0 C (53.6 F)
1985
10.2 C (50.4 F)
1986
13.5 C (56.3 F)
1987
7.0 C (44.6 F)
1988
8.5 C (47.3 F)
1989
7.0 C (44.6 F)
1990
8.4 C (47.1 F)
1991
8.0 C (46.4 F)
1992
8.3 C (46.9 F)
1993
9.4 C (48.9 F)
1994
8.0 C (46.4 F)
1995
11.0 C (51.8 F)
1996
10.4 C (50.7 F)
1997
8.0 C (46.4 F)
1998
10.8 C (51.4 F)
1999
8.7 C (47.7 F)
2000
8.6 C (47.5 F)
2001
8.4 C (47.1 F)
2002
11.4 C (52.5 F)
2003
8.8 C (47.8 F)
2004
7.3 C (45.1 F)
2005
8.0 C (46.4 F)
2006
6.8 C (44.2 F)
2007
10.0 C (50.0 F)
2008
12.0 C (53.6 F)
2009
8.6 C (47.5 F)
2010
9.2 C (48.6 F)
2011
10.2 C (50.4 F)
2012
8.7 C (47.7 F)
2013
9.0 C (48.2 F)
2014
10.4 C (50.7 F)
2015
11.7 C (53.1 F)
2016
10.8 C (51.4 F)
2017
8.2 C (46.8 F)
2018
10.4 C (50.7 F)
2019
4.1 C (39.4 F)
2020
16.0 C (60.8 F)
2021
7.6 C (45.7 F)
2022
9.2 C (48.6 F)
2023
9.4 C (48.9 F)
2024
12.0 C (53.6 F)
Wettest day (Rx1day)
The wettest day of the year at San Joaquin, 1973 to 2024. The record is 380.0 mm (15.0 in) in 1978, marked on the chart; the median year is 89.9 mm (3.5 in).
Wettest day (Rx1day) at San Joaquin by year
Year
Wettest day (Rx1day)
1973
30.0 mm (1.2 in)
1974
52.1 mm (2.1 in)
1975
0.0 mm (0.00 in)
1976
23.1 mm (0.9 in)
1977
53.1 mm (2.1 in)
1978
380.0 mm (15.0 in)
1979
22.1 mm (0.9 in)
1980
70.1 mm (2.8 in)
1981
59.9 mm (2.4 in)
1982
264.9 mm (10.4 in)
1983
43.9 mm (1.7 in)
1984
54.1 mm (2.1 in)
1985
6.1 mm (0.24 in)
1986
41.9 mm (1.6 in)
1987
91.9 mm (3.6 in)
1988
57.9 mm (2.3 in)
1989
50.0 mm (2.0 in)
1990
84.1 mm (3.3 in)
1991
89.9 mm (3.5 in)
1992
91.9 mm (3.6 in)
1993
130.0 mm (5.1 in)
1994
71.1 mm (2.8 in)
1995
67.1 mm (2.6 in)
1996
81.0 mm (3.2 in)
1997
120.9 mm (4.8 in)
1998
112.0 mm (4.4 in)
1999
157.0 mm (6.2 in)
2000
73.9 mm (2.9 in)
2001
55.9 mm (2.2 in)
2002
82.0 mm (3.2 in)
2003
150.1 mm (5.9 in)
2004
157.0 mm (6.2 in)
2005
188.0 mm (7.4 in)
2006
149.1 mm (5.9 in)
2007
94.0 mm (3.7 in)
2008
132.1 mm (5.2 in)
2009
181.1 mm (7.1 in)
2010
138.9 mm (5.5 in)
2011
89.9 mm (3.5 in)
2012
108.0 mm (4.3 in)
2013
172.2 mm (6.8 in)
2014
117.9 mm (4.6 in)
2015
61.0 mm (2.4 in)
2016
124.2 mm (4.9 in)
2017
114.3 mm (4.5 in)
2018
98.8 mm (3.9 in)
2019
95.0 mm (3.7 in)
2020
108.7 mm (4.3 in)
2021
95.0 mm (3.7 in)
2022
86.1 mm (3.4 in)
2023
63.2 mm (2.5 in)
2024
24.4 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at San Joaquin, 1973 to 2024. The record is 433.3 mm (17.1 in) in 2013, marked on the chart; the median year is 139.7 mm (5.5 in).
Wettest five days (Rx5day) at San Joaquin by year
Year
Wettest five days (Rx5day)
1973
1.0 mm (0.04 in)
1974
18.0 mm (0.7 in)
1975
n/a
1976
23.1 mm (0.9 in)
1977
16.0 mm (0.6 in)
1978
380.0 mm (15.0 in)
1979
22.1 mm (0.9 in)
1980
62.0 mm (2.4 in)
1981
61.0 mm (2.4 in)
1982
n/a
1983
68.8 mm (2.7 in)
1984
n/a
1985
n/a
1986
n/a
1987
n/a
1988
n/a
1989
26.4 mm (1.0 in)
1990
100.8 mm (4.0 in)
1991
43.2 mm (1.7 in)
1992
154.9 mm (6.1 in)
1993
204.2 mm (8.0 in)
1994
91.3 mm (3.6 in)
1995
102.1 mm (4.0 in)
1996
194.0 mm (7.6 in)
1997
181.1 mm (7.1 in)
1998
136.9 mm (5.4 in)
1999
159.0 mm (6.3 in)
2000
149.3 mm (5.9 in)
2001
76.8 mm (3.0 in)
2002
201.1 mm (7.9 in)
2003
229.3 mm (9.0 in)
2004
345.0 mm (13.6 in)
2005
276.2 mm (10.9 in)
2006
250.6 mm (9.9 in)
2007
263.0 mm (10.4 in)
2008
358.9 mm (14.1 in)
2009
303.0 mm (11.9 in)
2010
163.8 mm (6.4 in)
2011
157.0 mm (6.2 in)
2012
150.2 mm (5.9 in)
2013
433.3 mm (17.1 in)
2014
202.9 mm (8.0 in)
2015
109.5 mm (4.3 in)
2016
202.7 mm (8.0 in)
2017
158.7 mm (6.2 in)
2018
139.7 mm (5.5 in)
2019
78.2 mm (3.1 in)
2020
121.2 mm (4.8 in)
2021
78.5 mm (3.1 in)
2022
50.3 mm (2.0 in)
2023
126.7 mm (5.0 in)
2024
71.9 mm (2.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at San Joaquin, 1973 to 2024. The record is 20 days in 1981, marked on the chart; the median year is 1 day.
Longest dry spell (CDD) at San Joaquin by year
Year
Longest dry spell (CDD)
1973
3 days
1974
5 days
1975
2 days
1976
4 days
1977
6 days
1978
8 days
1979
9 days
1980
16 days
1981
20 days
1982
1 day
1983
1 day
1984
n/a
1985
1 day
1986
2 days
1987
1 day
1988
1 day
1989
1 day
1990
1 day
1991
1 day
1992
1 day
1993
1 day
1994
2 days
1995
1 day
1996
2 days
1997
2 days
1998
1 day
1999
1 day
2000
1 day
2001
1 day
2002
1 day
2003
1 day
2004
1 day
2005
2 days
2006
1 day
2007
1 day
2008
2 days
2009
1 day
2010
1 day
2011
1 day
2012
2 days
2013
3 days
2014
2 days
2015
3 days
2016
2 days
2017
1 day
2018
1 day
2019
3 days
2020
1 day
2021
1 day
2022
1 day
2023
1 day
2024
1 day
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 Joaquin standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Joaquin 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.