Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at La Mesa Intl. The lines show the 2026 daily maximum and minimum. 1 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at La Mesa Intl, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
37.2 C (99.0 F)
12.8 C (55.0 F)
34.2 C (93.6 F)
19.6 C (67.3 F)
Feb
39.5 C (103.1 F)
10.0 C (50.0 F)
33.3 C (91.9 F)
21.3 C (70.3 F)
Mar
42.8 C (109.0 F)
13.4 C (56.1 F)
37.0 C (98.6 F)
21.6 C (70.9 F)
Apr
42.0 C (107.6 F)
15.0 C (59.0 F)
35.5 C (95.9 F)
19.1 C (66.4 F)
May
42.0 C (107.6 F)
15.6 C (60.1 F)
37.8 C (100.0 F)
23.1 C (73.6 F)
Jun
41.1 C (106.0 F)
17.0 C (62.6 F)
37.1 C (98.8 F)
21.7 C (71.1 F)
Jul
38.0 C (100.4 F)
18.9 C (66.0 F)
34.5 C (94.1 F)
20.6 C (69.1 F)
Aug
38.8 C (101.8 F)
18.9 C (66.0 F)
35.1 C (95.2 F)
22.0 C (71.6 F)
Sep
39.2 C (102.6 F)
18.9 C (66.0 F)
n/a
n/a
Oct
37.8 C (100.0 F)
13.9 C (57.0 F)
n/a
n/a
Nov
37.5 C (99.5 F)
15.0 C (59.0 F)
n/a
n/a
Dec
39.9 C (103.8 F)
12.8 C (55.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at La Mesa Intl still stand. 1958 holds the most, with 67.
Standing records at La Mesa Intl by the year they were set
Year set
Standing records
1957
53
1958
67
1961
5
1962
22
1963
32
1964
17
1965
28
1966
12
1967
6
1968
11
1973
21
1974
14
1975
22
1976
25
1977
29
1978
28
1979
34
1980
37
1981
19
1982
17
1983
36
1984
28
1985
21
1986
25
1987
14
1988
41
1989
67
1990
39
1991
31
1992
32
1993
16
1994
14
1995
35
1996
42
1997
35
1998
33
1999
18
2000
7
2001
19
2002
14
2003
34
2004
11
2006
14
2007
13
2008
23
2009
21
2010
33
2011
9
2012
6
2013
15
2014
13
2015
16
2016
21
2017
12
2018
18
2019
20
2020
22
2021
15
2022
20
2023
14
2024
35
2025
13
Wettest Day of Each Month
Oct: 397.0 mm (15.6 in)
The wettest day on record for each calendar month at La Mesa Intl. The most was 397.0 mm (15.6 in) on 22 October 1981.
Record daily precipitation for each month at La Mesa Intl
Month
Record daily precipitation (mm)
Date
Jan
99.1 mm (3.9 in)
8 January 1982
Feb
335.0 mm (13.2 in)
28 February 1984
Mar
192.0 mm (7.6 in)
7 March 1981
Apr
54.4 mm (2.1 in)
7 April 1982
May
256.0 mm (10.1 in)
31 May 1985
Jun
196.1 mm (7.7 in)
6 June 1977
Jul
170.2 mm (6.7 in)
14 July 1983
Aug
153.9 mm (6.1 in)
10 August 2006
Sep
291.1 mm (11.5 in)
5 September 1979
Oct
397.0 mm (15.6 in)
22 October 1981
Nov
389.9 mm (15.4 in)
7 November 1979
Dec
382.5 mm (15.1 in)
13 December 2011
Period of Record Coverage
1957 to 2025
Complete yearUnder 90 percent of days
62 years of record at La Mesa Intl, 1957 to 2025. 62 years have data for under 90 percent of days and are left out of rankings: 1957, 1958, 1961, 1962, 1963, 1964, 1965, 1966 and others.
Yearly extremes at La Mesa Intl: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.8 C (109.0 F)
2010
39.1 C (102.4 F)
62
Coldest night (TNn)
10.0 C (50.0 F)
1973
16.0 C (60.8 F)
62
Wettest day (Rx1day)
397.0 mm (15.6 in)
1981
76.2 mm (3.0 in)
60
Wettest five days (Rx5day)
432.3 mm (17.0 in)
2011
91.5 mm (3.6 in)
48
Longest dry spell (CDD)
38 days
2018
10 days
59
Hottest day (TXx)
The hottest day of the year at La Mesa Intl, 1957 to 2025. The record is 42.8 C (109.0 F) in 2010, marked on the chart; the median year is 39.1 C (102.4 F).
Hottest day (TXx) at La Mesa Intl by year
Year
Hottest day (TXx)
1957
35.0 C (95.0 F)
1958
41.1 C (106.0 F)
1961
37.8 C (100.0 F)
1962
37.2 C (99.0 F)
1963
41.1 C (106.0 F)
1964
40.6 C (105.1 F)
1965
37.2 C (99.0 F)
1966
36.1 C (97.0 F)
1967
37.2 C (99.0 F)
1968
36.1 C (97.0 F)
1973
37.0 C (98.6 F)
1974
38.0 C (100.4 F)
1975
39.0 C (102.2 F)
1976
38.0 C (100.4 F)
1977
39.0 C (102.2 F)
1978
40.0 C (104.0 F)
1979
38.0 C (100.4 F)
1980
39.0 C (102.2 F)
1981
38.0 C (100.4 F)
1982
38.4 C (101.1 F)
1983
40.4 C (104.7 F)
1984
42.5 C (108.5 F)
1985
39.4 C (102.9 F)
1986
40.4 C (104.7 F)
1987
39.0 C (102.2 F)
1988
40.7 C (105.3 F)
1989
39.0 C (102.2 F)
1990
40.4 C (104.7 F)
1991
41.4 C (106.5 F)
1992
40.2 C (104.4 F)
1993
39.5 C (103.1 F)
1994
40.3 C (104.5 F)
1995
40.8 C (105.4 F)
1996
40.6 C (105.1 F)
1997
41.6 C (106.9 F)
1998
41.4 C (106.5 F)
1999
38.0 C (100.4 F)
2000
36.3 C (97.3 F)
2001
36.4 C (97.5 F)
2002
37.0 C (98.6 F)
2003
42.0 C (107.6 F)
2004
37.8 C (100.0 F)
2006
37.8 C (100.0 F)
2007
40.0 C (104.0 F)
2008
38.6 C (101.5 F)
2009
40.0 C (104.0 F)
2010
42.8 C (109.0 F)
2011
40.5 C (104.9 F)
2012
38.7 C (101.7 F)
2013
40.7 C (105.3 F)
2014
40.9 C (105.6 F)
2015
40.5 C (104.9 F)
2016
40.2 C (104.4 F)
2017
40.3 C (104.5 F)
2018
38.4 C (101.1 F)
2019
40.4 C (104.7 F)
2020
36.9 C (98.4 F)
2021
37.7 C (99.9 F)
2022
39.2 C (102.6 F)
2023
38.9 C (102.0 F)
2024
41.9 C (107.4 F)
2025
37.8 C (100.0 F)
Coldest night (TNn)
The coldest night of the year at La Mesa Intl, 1957 to 2025. The record is 10.0 C (50.0 F) in 1973, marked on the chart; the median year is 16.0 C (60.8 F).
Coldest night (TNn) at La Mesa Intl by year
Year
Coldest night (TNn)
1957
13.9 C (57.0 F)
1958
11.1 C (52.0 F)
1961
18.3 C (64.9 F)
1962
12.8 C (55.0 F)
1963
12.8 C (55.0 F)
1964
15.0 C (59.0 F)
1965
13.9 C (57.0 F)
1966
15.0 C (59.0 F)
1967
15.0 C (59.0 F)
1968
13.9 C (57.0 F)
1973
10.0 C (50.0 F)
1974
16.0 C (60.8 F)
1975
16.0 C (60.8 F)
1976
15.0 C (59.0 F)
1977
16.0 C (60.8 F)
1978
14.0 C (57.2 F)
1979
17.0 C (62.6 F)
1980
14.0 C (57.2 F)
1981
16.0 C (60.8 F)
1982
17.0 C (62.6 F)
1983
14.4 C (57.9 F)
1984
15.0 C (59.0 F)
1985
15.0 C (59.0 F)
1986
15.0 C (59.0 F)
1987
14.3 C (57.7 F)
1988
16.8 C (62.2 F)
1989
14.4 C (57.9 F)
1990
16.7 C (62.1 F)
1991
15.4 C (59.7 F)
1992
17.0 C (62.6 F)
1993
13.6 C (56.5 F)
1994
15.8 C (60.4 F)
1995
12.9 C (55.2 F)
1996
13.4 C (56.1 F)
1997
16.0 C (60.8 F)
1998
13.8 C (56.8 F)
1999
15.3 C (59.5 F)
2000
15.1 C (59.2 F)
2001
18.3 C (64.9 F)
2002
16.1 C (61.0 F)
2003
16.9 C (62.4 F)
2004
18.5 C (65.3 F)
2006
16.9 C (62.4 F)
2007
17.3 C (63.1 F)
2008
16.2 C (61.2 F)
2009
13.6 C (56.5 F)
2010
16.2 C (61.2 F)
2011
16.3 C (61.3 F)
2012
17.8 C (64.0 F)
2013
15.9 C (60.6 F)
2014
14.5 C (58.1 F)
2015
17.8 C (64.0 F)
2016
18.4 C (65.1 F)
2017
16.0 C (60.8 F)
2018
17.0 C (62.6 F)
2019
16.8 C (62.2 F)
2020
17.6 C (63.7 F)
2021
16.4 C (61.5 F)
2022
18.5 C (65.3 F)
2023
17.2 C (63.0 F)
2024
18.4 C (65.1 F)
2025
19.1 C (66.4 F)
Wettest day (Rx1day)
The wettest day of the year at La Mesa Intl, 1957 to 2025. The record is 397.0 mm (15.6 in) in 1981, marked on the chart; the median year is 76.2 mm (3.0 in).
Wettest day (Rx1day) at La Mesa Intl by year
Year
Wettest day (Rx1day)
1957
n/a
1958
n/a
1961
9.9 mm (0.39 in)
1962
39.9 mm (1.6 in)
1963
37.1 mm (1.5 in)
1964
47.0 mm (1.9 in)
1965
49.0 mm (1.9 in)
1966
74.9 mm (2.9 in)
1967
36.1 mm (1.4 in)
1968
22.1 mm (0.9 in)
1973
243.1 mm (9.6 in)
1974
2.0 mm (0.08 in)
1975
364.0 mm (14.3 in)
1976
45.0 mm (1.8 in)
1977
293.9 mm (11.6 in)
1978
191.0 mm (7.5 in)
1979
389.9 mm (15.4 in)
1980
191.0 mm (7.5 in)
1981
397.0 mm (15.6 in)
1982
163.1 mm (6.4 in)
1983
262.9 mm (10.4 in)
1984
335.0 mm (13.2 in)
1985
256.0 mm (10.1 in)
1986
44.2 mm (1.7 in)
1987
50.5 mm (2.0 in)
1988
95.5 mm (3.8 in)
1989
101.3 mm (4.0 in)
1990
100.6 mm (4.0 in)
1991
56.9 mm (2.2 in)
1992
66.0 mm (2.6 in)
1993
256.0 mm (10.1 in)
1994
154.4 mm (6.1 in)
1995
170.2 mm (6.7 in)
1996
106.9 mm (4.2 in)
1997
66.5 mm (2.6 in)
1998
108.0 mm (4.3 in)
1999
77.7 mm (3.1 in)
2000
59.4 mm (2.3 in)
2001
56.4 mm (2.2 in)
2002
51.1 mm (2.0 in)
2003
30.2 mm (1.2 in)
2004
49.8 mm (2.0 in)
2006
153.9 mm (6.1 in)
2007
109.0 mm (4.3 in)
2008
88.9 mm (3.5 in)
2009
360.9 mm (14.2 in)
2010
43.9 mm (1.7 in)
2011
382.5 mm (15.1 in)
2012
48.0 mm (1.9 in)
2013
382.0 mm (15.0 in)
2014
75.7 mm (3.0 in)
2015
47.0 mm (1.9 in)
2016
36.3 mm (1.4 in)
2017
88.4 mm (3.5 in)
2018
51.1 mm (2.0 in)
2019
54.9 mm (2.2 in)
2020
183.9 mm (7.2 in)
2021
51.3 mm (2.0 in)
2022
80.3 mm (3.2 in)
2023
76.7 mm (3.0 in)
2024
55.1 mm (2.2 in)
2025
30.0 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at La Mesa Intl, 1957 to 2025. The record is 432.3 mm (17.0 in) in 2011, marked on the chart; the median year is 91.5 mm (3.6 in).
Wettest five days (Rx5day) at La Mesa Intl by year
Year
Wettest five days (Rx5day)
1957
n/a
1958
n/a
1961
14.5 mm (0.6 in)
1962
30.0 mm (1.2 in)
1963
n/a
1964
52.8 mm (2.1 in)
1965
n/a
1966
42.1 mm (1.7 in)
1967
n/a
1968
n/a
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
127.0 mm (5.0 in)
1982
121.4 mm (4.8 in)
1983
262.9 mm (10.4 in)
1984
335.0 mm (13.2 in)
1985
96.7 mm (3.8 in)
1986
79.6 mm (3.1 in)
1987
46.6 mm (1.8 in)
1988
155.9 mm (6.1 in)
1989
121.6 mm (4.8 in)
1990
154.6 mm (6.1 in)
1991
74.9 mm (2.9 in)
1992
114.8 mm (4.5 in)
1993
276.9 mm (10.9 in)
1994
77.5 mm (3.1 in)
1995
184.4 mm (7.3 in)
1996
123.4 mm (4.9 in)
1997
102.1 mm (4.0 in)
1998
153.9 mm (6.1 in)
1999
109.2 mm (4.3 in)
2000
35.9 mm (1.4 in)
2001
40.5 mm (1.6 in)
2002
30.7 mm (1.2 in)
2003
43.4 mm (1.7 in)
2004
55.1 mm (2.2 in)
2006
158.5 mm (6.2 in)
2007
133.4 mm (5.3 in)
2008
155.7 mm (6.1 in)
2009
375.6 mm (14.8 in)
2010
77.7 mm (3.1 in)
2011
432.3 mm (17.0 in)
2012
71.2 mm (2.8 in)
2013
382.0 mm (15.0 in)
2014
79.0 mm (3.1 in)
2015
75.0 mm (3.0 in)
2016
76.5 mm (3.0 in)
2017
114.3 mm (4.5 in)
2018
60.5 mm (2.4 in)
2019
60.0 mm (2.4 in)
2020
255.5 mm (10.1 in)
2021
71.6 mm (2.8 in)
2022
140.7 mm (5.5 in)
2023
86.2 mm (3.4 in)
2024
83.5 mm (3.3 in)
2025
61.8 mm (2.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at La Mesa Intl, 1957 to 2025. The record is 38 days in 2018, marked on the chart; the median year is 10 days.
Longest dry spell (CDD) at La Mesa Intl by year
Year
Longest dry spell (CDD)
1957
n/a
1958
n/a
1961
3 days
1962
2 days
1963
2 days
1964
4 days
1965
2 days
1966
2 days
1967
1 day
1968
2 days
1973
2 days
1974
1 day
1975
1 day
1976
n/a
1977
1 day
1978
1 day
1979
2 days
1980
2 days
1981
2 days
1982
10 days
1983
10 days
1984
10 days
1985
17 days
1986
15 days
1987
5 days
1988
33 days
1989
20 days
1990
12 days
1991
13 days
1992
8 days
1993
8 days
1994
6 days
1995
9 days
1996
13 days
1997
11 days
1998
11 days
1999
13 days
2000
9 days
2001
3 days
2002
5 days
2003
6 days
2004
5 days
2006
5 days
2007
18 days
2008
17 days
2009
11 days
2010
13 days
2011
12 days
2012
20 days
2013
26 days
2014
21 days
2015
35 days
2016
30 days
2017
24 days
2018
38 days
2019
38 days
2020
11 days
2021
13 days
2022
11 days
2023
12 days
2024
6 days
2025
19 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 La Mesa Intl standing records by year: CSV or JSON. Field meanings are on the data page.
Data for La Mesa Intl 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.