Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at San Carlos. 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 Carlos, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
33.9 C (93.0 F)
-3.3 C (26.1 F)
n/a
n/a
Feb
36.7 C (98.1 F)
1.7 C (35.1 F)
n/a
n/a
Mar
33.9 C (93.0 F)
1.7 C (35.1 F)
n/a
n/a
Apr
40.0 C (104.0 F)
2.8 C (37.0 F)
n/a
n/a
May
36.7 C (98.1 F)
0.6 C (33.1 F)
n/a
n/a
Jun
40.6 C (105.1 F)
1.7 C (35.1 F)
n/a
n/a
Jul
41.7 C (107.1 F)
6.7 C (44.1 F)
n/a
n/a
Aug
40.0 C (104.0 F)
3.9 C (39.0 F)
n/a
n/a
Sep
43.9 C (111.0 F)
5.6 C (42.1 F)
n/a
n/a
Oct
39.4 C (102.9 F)
3.9 C (39.0 F)
n/a
n/a
Nov
37.2 C (99.0 F)
1.7 C (35.1 F)
n/a
n/a
Dec
33.3 C (91.9 F)
-1.1 C (30.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at San Carlos still stand. 1976 holds the most, with 98.
Standing records at San Carlos by the year they were set
Year set
Standing records
1962
26
1963
58
1964
45
1965
62
1966
36
1967
54
1968
39
1969
38
1970
27
1971
74
1972
44
1973
47
1974
35
1975
39
1976
98
1977
39
1978
47
1979
52
1980
47
1981
35
1982
29
1983
22
1984
31
1985
35
1986
36
1987
25
1988
22
1989
20
1994
1
1996
5
1997
19
1998
6
1999
15
2000
15
2001
55
2002
77
2003
10
2004
48
2005
4
2006
10
2009
13
2010
7
2011
7
2012
10
Wettest Day of Each Month
Dec: 93.0 mm (3.7 in)
The wettest day on record for each calendar month at San Carlos. The most was 93.0 mm (3.7 in) on 5 December 1966.
Record daily precipitation for each month at San Carlos
Month
Record daily precipitation (mm)
Date
Jan
84.3 mm (3.3 in)
14 January 1978
Feb
64.8 mm (2.6 in)
17 February 1980
Mar
55.1 mm (2.2 in)
10 March 2006
Apr
35.8 mm (1.4 in)
11 April 1967
May
23.9 mm (0.9 in)
21 May 1998
Jun
21.6 mm (0.9 in)
25 June 2000
Jul
6.6 mm (0.26 in)
5 July 1999
Aug
34.8 mm (1.4 in)
16 August 1977
Sep
34.8 mm (1.4 in)
9 September 1976
Oct
35.1 mm (1.4 in)
29 October 1974
Nov
61.0 mm (2.4 in)
12 November 2011
Dec
93.0 mm (3.7 in)
5 December 1966
Period of Record Coverage
1962 to 2012
Complete yearUnder 90 percent of days
44 years of record at San Carlos, 1962 to 2012. 19 years have data for under 90 percent of days and are left out of rankings: 1962, 1986, 1987, 1988, 1989, 1994, 1996, 1997 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 25 complete years at San Carlos, 1963 to 2002. Blue stripes are years cooler than the station's own mean of 16.9 C (62.5 F); red stripes are warmer. The coolest year was 2001, at 15.0 C (59.0 F), and the warmest was 1984, at 18.0 C (64.5 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at San Carlos as warming stripes, 1963 to 2002
Year
Annual mean temperature
Difference from the station mean
1963
17.7 C
+0.73 C
1964
16.5 C
-0.40 C
1965
16.8 C
-0.17 C
1966
17.0 C
+0.09 C
1967
17.3 C
+0.38 C
1968
17.4 C
+0.48 C
1969
17.1 C
+0.18 C
1970
17.3 C
+0.34 C
1971
16.4 C
-0.51 C
1972
17.0 C
+0.12 C
1973
16.2 C
-0.74 C
1974
16.5 C
-0.44 C
1975
16.0 C
-0.93 C
1976
17.0 C
+0.11 C
1977
17.4 C
+0.44 C
1978
17.4 C
+0.51 C
1979
16.9 C
+0.01 C
1980
17.5 C
+0.58 C
1981
17.9 C
+0.95 C
1982
16.9 C
-0.01 C
1983
17.4 C
+0.44 C
1984
18.0 C
+1.11 C
1985
17.2 C
+0.27 C
2001
15.0 C
-1.93 C
2002
15.4 C
-1.50 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
1962 to 2012
Yearly extremes at San Carlos: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.9 C (111.0 F)
1963
37.8 C (100.0 F)
44
Coldest night (TNn)
-3.3 C (26.1 F)
1997
1.7 C (35.1 F)
44
Wettest day (Rx1day)
93.0 mm (3.7 in)
1966
38.4 mm (1.5 in)
44
Wettest five days (Rx5day)
207.5 mm (8.2 in)
1966
60.4 mm (2.4 in)
44
Longest dry spell (CDD)
228 days
1966
102 days
44
Hottest day (TXx)
The hottest day of the year at San Carlos, 1962 to 2012. The record is 43.9 C (111.0 F) in 1963, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at San Carlos by year
Year
Hottest day (TXx)
1962
35.6 C (96.1 F)
1963
43.9 C (111.0 F)
1964
35.6 C (96.1 F)
1965
39.4 C (102.9 F)
1966
37.2 C (99.0 F)
1967
38.9 C (102.0 F)
1968
36.7 C (98.1 F)
1969
37.8 C (100.0 F)
1970
42.8 C (109.0 F)
1971
40.6 C (105.1 F)
1972
38.9 C (102.0 F)
1973
38.9 C (102.0 F)
1974
37.8 C (100.0 F)
1975
40.6 C (105.1 F)
1976
36.7 C (98.1 F)
1977
35.6 C (96.1 F)
1978
40.6 C (105.1 F)
1979
40.6 C (105.1 F)
1980
36.7 C (98.1 F)
1981
40.6 C (105.1 F)
1982
37.8 C (100.0 F)
1983
36.7 C (98.1 F)
1984
40.6 C (105.1 F)
1985
41.7 C (107.1 F)
1986
35.6 C (96.1 F)
1987
38.9 C (102.0 F)
1988
40.0 C (104.0 F)
1989
40.0 C (104.0 F)
1994
28.9 C (84.0 F)
1996
31.7 C (89.1 F)
1997
38.9 C (102.0 F)
1998
35.0 C (95.0 F)
1999
35.0 C (95.0 F)
2000
35.6 C (96.1 F)
2001
31.7 C (89.1 F)
2002
33.9 C (93.0 F)
2003
37.8 C (100.0 F)
2004
40.0 C (104.0 F)
2005
32.8 C (91.0 F)
2006
38.9 C (102.0 F)
2009
40.0 C (104.0 F)
2010
35.0 C (95.0 F)
2011
35.6 C (96.1 F)
2012
36.7 C (98.1 F)
Coldest night (TNn)
The coldest night of the year at San Carlos, 1962 to 2012. The record is -3.3 C (26.1 F) in 1997, marked on the chart; the median year is 1.7 C (35.1 F).
Coldest night (TNn) at San Carlos by year
Year
Coldest night (TNn)
1962
2.2 C (36.0 F)
1963
0.6 C (33.1 F)
1964
2.2 C (36.0 F)
1965
2.8 C (37.0 F)
1966
1.7 C (35.1 F)
1967
1.1 C (34.0 F)
1968
0.6 C (33.1 F)
1969
1.7 C (35.1 F)
1970
2.8 C (37.0 F)
1971
0.0 C (32.0 F)
1972
0.0 C (32.0 F)
1973
0.0 C (32.0 F)
1974
0.6 C (33.1 F)
1975
0.6 C (33.1 F)
1976
0.6 C (33.1 F)
1977
2.8 C (37.0 F)
1978
-1.1 C (30.0 F)
1979
1.7 C (35.1 F)
1980
2.2 C (36.0 F)
1981
2.8 C (37.0 F)
1982
1.7 C (35.1 F)
1983
1.7 C (35.1 F)
1984
3.9 C (39.0 F)
1985
2.8 C (37.0 F)
1986
3.9 C (39.0 F)
1987
0.0 C (32.0 F)
1988
1.7 C (35.1 F)
1989
1.7 C (35.1 F)
1994
8.9 C (48.0 F)
1996
3.9 C (39.0 F)
1997
-3.3 C (26.1 F)
1998
3.9 C (39.0 F)
1999
1.7 C (35.1 F)
2000
1.7 C (35.1 F)
2001
1.7 C (35.1 F)
2002
1.7 C (35.1 F)
2003
2.8 C (37.0 F)
2004
1.7 C (35.1 F)
2005
5.0 C (41.0 F)
2006
3.9 C (39.0 F)
2009
3.9 C (39.0 F)
2010
5.6 C (42.1 F)
2011
3.9 C (39.0 F)
2012
5.0 C (41.0 F)
Wettest day (Rx1day)
The wettest day of the year at San Carlos, 1962 to 2012. The record is 93.0 mm (3.7 in) in 1966, marked on the chart; the median year is 38.4 mm (1.5 in).
Wettest day (Rx1day) at San Carlos by year
Year
Wettest day (Rx1day)
1962
8.9 mm (0.35 in)
1963
28.4 mm (1.1 in)
1964
39.9 mm (1.6 in)
1965
45.0 mm (1.8 in)
1966
93.0 mm (3.7 in)
1967
47.8 mm (1.9 in)
1968
29.0 mm (1.1 in)
1969
69.9 mm (2.8 in)
1970
46.0 mm (1.8 in)
1971
16.5 mm (0.6 in)
1972
25.9 mm (1.0 in)
1973
25.9 mm (1.0 in)
1974
38.6 mm (1.5 in)
1975
40.4 mm (1.6 in)
1976
39.9 mm (1.6 in)
1977
34.8 mm (1.4 in)
1978
84.3 mm (3.3 in)
1979
38.1 mm (1.5 in)
1980
64.8 mm (2.6 in)
1981
31.8 mm (1.3 in)
1982
47.0 mm (1.9 in)
1983
53.8 mm (2.1 in)
1984
34.8 mm (1.4 in)
1985
31.8 mm (1.3 in)
1986
40.6 mm (1.6 in)
1987
37.8 mm (1.5 in)
1988
54.9 mm (2.2 in)
1989
27.9 mm (1.1 in)
1994
0.0 mm (0.00 in)
1996
14.0 mm (0.6 in)
1997
73.7 mm (2.9 in)
1998
46.2 mm (1.8 in)
1999
14.0 mm (0.6 in)
2000
41.4 mm (1.6 in)
2001
36.6 mm (1.4 in)
2002
16.0 mm (0.6 in)
2003
43.7 mm (1.7 in)
2004
56.9 mm (2.2 in)
2005
31.5 mm (1.2 in)
2006
55.1 mm (2.2 in)
2009
35.6 mm (1.4 in)
2010
19.3 mm (0.8 in)
2011
61.0 mm (2.4 in)
2012
13.7 mm (0.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at San Carlos, 1962 to 2012. The record is 207.5 mm (8.2 in) in 1966, marked on the chart; the median year is 60.4 mm (2.4 in).
Wettest five days (Rx5day) at San Carlos by year
Year
Wettest five days (Rx5day)
1962
14.7 mm (0.6 in)
1963
46.0 mm (1.8 in)
1964
43.2 mm (1.7 in)
1965
92.6 mm (3.6 in)
1966
207.5 mm (8.2 in)
1967
83.4 mm (3.3 in)
1968
33.8 mm (1.3 in)
1969
89.2 mm (3.5 in)
1970
110.5 mm (4.4 in)
1971
35.3 mm (1.4 in)
1972
58.7 mm (2.3 in)
1973
53.6 mm (2.1 in)
1974
71.3 mm (2.8 in)
1975
62.5 mm (2.5 in)
1976
112.5 mm (4.4 in)
1977
62.1 mm (2.4 in)
1978
109.7 mm (4.3 in)
1979
47.0 mm (1.9 in)
1980
155.2 mm (6.1 in)
1981
61.0 mm (2.4 in)
1982
59.2 mm (2.3 in)
1983
162.3 mm (6.4 in)
1984
46.5 mm (1.8 in)
1985
47.0 mm (1.9 in)
1986
56.1 mm (2.2 in)
1987
79.5 mm (3.1 in)
1988
63.2 mm (2.5 in)
1989
29.2 mm (1.1 in)
1994
0.0 mm (0.00 in)
1996
11.7 mm (0.5 in)
1997
73.7 mm (2.9 in)
1998
48.5 mm (1.9 in)
1999
14.0 mm (0.6 in)
2000
45.7 mm (1.8 in)
2001
63.0 mm (2.5 in)
2002
19.1 mm (0.8 in)
2003
68.6 mm (2.7 in)
2004
59.7 mm (2.4 in)
2005
83.3 mm (3.3 in)
2006
61.2 mm (2.4 in)
2009
66.3 mm (2.6 in)
2010
33.6 mm (1.3 in)
2011
61.0 mm (2.4 in)
2012
23.4 mm (0.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at San Carlos, 1962 to 2012. The record is 228 days in 1966, marked on the chart; the median year is 102 days.
Longest dry spell (CDD) at San Carlos by year
Year
Longest dry spell (CDD)
1962
194 days
1963
130 days
1964
161 days
1965
108 days
1966
228 days
1967
106 days
1968
103 days
1969
185 days
1970
174 days
1971
102 days
1972
102 days
1973
197 days
1974
107 days
1975
79 days
1976
139 days
1977
95 days
1978
127 days
1979
140 days
1980
167 days
1981
96 days
1982
167 days
1983
95 days
1984
79 days
1985
51 days
1986
39 days
1987
34 days
1988
20 days
1989
63 days
1994
31 days
1996
11 days
1997
33 days
1998
68 days
1999
101 days
2000
108 days
2001
200 days
2002
176 days
2003
83 days
2004
166 days
2005
31 days
2006
35 days
2009
97 days
2010
100 days
2011
29 days
2012
71 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 Carlos standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Carlos 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.