Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Santa Ana (Dge). 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 Santa Ana (Dge), with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
38.9 C (102.0 F)
-12.2 C (10.0 F)
n/a
n/a
Feb
42.8 C (109.0 F)
-8.3 C (17.1 F)
n/a
n/a
Mar
40.6 C (105.1 F)
-6.1 C (21.0 F)
n/a
n/a
Apr
43.9 C (111.0 F)
0.0 C (32.0 F)
n/a
n/a
May
48.9 C (120.0 F)
0.0 C (32.0 F)
n/a
n/a
Jun
48.9 C (120.0 F)
0.0 C (32.0 F)
n/a
n/a
Jul
47.8 C (118.0 F)
5.0 C (41.0 F)
n/a
n/a
Aug
45.0 C (113.0 F)
7.8 C (46.0 F)
n/a
n/a
Sep
45.6 C (114.1 F)
0.0 C (32.0 F)
n/a
n/a
Oct
45.0 C (113.0 F)
0.0 C (32.0 F)
n/a
n/a
Nov
42.8 C (109.0 F)
-6.1 C (21.0 F)
n/a
n/a
Dec
38.9 C (102.0 F)
-8.3 C (17.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Santa Ana (Dge) still stand. 1950 holds the most, with 166.
Standing records at Santa Ana (Dge) by the year they were set
Year set
Standing records
1950
166
1951
91
1952
102
1953
28
1954
81
1955
57
1957
92
1958
34
1959
31
1960
15
1961
14
1962
32
1963
24
1964
47
1965
29
1966
30
1967
17
1968
51
1969
73
1970
32
1971
45
1972
18
1973
22
1974
17
1975
19
1976
16
1977
10
1978
13
1979
17
1980
20
1981
13
1982
5
1983
3
1984
12
1985
5
1986
5
1987
8
1988
9
1989
13
1990
13
1991
9
1992
2
1993
4
1994
24
1995
8
1996
6
1997
14
1998
6
1999
5
2000
31
2001
5
2002
5
2003
5
2004
9
2005
2
All-Time Record Progression
2 new records
2 all-time records were set at Santa Ana (Dge) between 26 August 1987 and 26 December 1987. Each dot is a new record.
When Santa Ana (Dge) set new all-time records
Date
Kind
Detail
1987-08-26
Record daily precipitation
Record daily precipitation 91.4 mm (3.6 in)
1987-12-26
Record low maximum temperature
Record low maximum temperature 2.8 C (37.0 F)
Wettest Day of Each Month
Aug: 91.4 mm (3.6 in)
The wettest day on record for each calendar month at Santa Ana (Dge). The most was 91.4 mm (3.6 in) on 26 August 1987.
Record daily precipitation for each month at Santa Ana (Dge)
Month
Record daily precipitation (mm)
Date
Jan
53.3 mm (2.1 in)
6 January 1984
Feb
36.8 mm (1.4 in)
12 February 1991
Mar
46.5 mm (1.8 in)
3 March 1983
Apr
36.6 mm (1.4 in)
5 April 2001
May
18.3 mm (0.7 in)
30 May 1986
Jun
69.9 mm (2.8 in)
28 June 1970
Jul
78.0 mm (3.1 in)
29 July 1998
Aug
91.4 mm (3.6 in)
26 August 1987
Sep
79.8 mm (3.1 in)
19 September 2004
Oct
74.9 mm (2.9 in)
5 October 1989
Nov
88.9 mm (3.5 in)
11 November 1994
Dec
83.3 mm (3.3 in)
18 December 1978
Period of Record Coverage
1950 to 2005
Complete yearUnder 90 percent of days
55 years of record at Santa Ana (Dge), 1950 to 2005. 17 years have data for under 90 percent of days and are left out of rankings: 1950, 1951, 1952, 1953, 1954, 1955, 1957, 1958 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 36 complete years at Santa Ana (Dge), 1959 to 2001. Blue stripes are years cooler than the station's own mean of 20.7 C (69.2 F); red stripes are warmer. The coolest year was 1971, at 19.1 C (66.3 F), and the warmest was 1994, at 22.1 C (71.7 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Santa Ana (Dge) as warming stripes, 1959 to 2001
Year
Annual mean temperature
Difference from the station mean
1959
21.2 C
+0.53 C
1963
20.8 C
+0.14 C
1964
19.7 C
-0.94 C
1965
20.7 C
+0.03 C
1966
20.5 C
-0.13 C
1967
20.4 C
-0.32 C
1968
19.3 C
-1.33 C
1969
19.5 C
-1.16 C
1970
20.2 C
-0.44 C
1971
19.1 C
-1.61 C
1972
20.5 C
-0.22 C
1973
20.1 C
-0.55 C
1974
20.0 C
-0.64 C
1975
19.4 C
-1.29 C
1976
20.1 C
-0.55 C
1977
20.9 C
+0.27 C
1978
21.5 C
+0.78 C
1979
21.2 C
+0.53 C
1980
21.5 C
+0.83 C
1981
21.8 C
+1.15 C
1982
20.3 C
-0.36 C
1983
20.2 C
-0.52 C
1985
20.7 C
+0.01 C
1988
20.8 C
+0.16 C
1989
21.8 C
+1.09 C
1990
20.5 C
-0.17 C
1991
20.3 C
-0.34 C
1992
20.3 C
-0.35 C
1993
20.9 C
+0.23 C
1994
22.1 C
+1.38 C
1995
20.8 C
+0.15 C
1996
21.6 C
+0.96 C
1997
21.3 C
+0.59 C
1999
20.9 C
+0.25 C
2000
21.5 C
+0.85 C
2001
21.7 C
+1.07 C
The annual mean temperature here has risen by 0.3 C (0.1 to 0.5) per decade over 1959 to 2001. In Fahrenheit: 0.6 F (0.2 to 0.9) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Santa Ana (Dge)
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.3 C (0.1 to 0.5) per decade
0.6 F (0.2 to 0.9) per decade
1959 to 2001
36
Rise
Mean daily maximum
0.1 C (-0.1 to 0.4) per decade
0.2 F (-0.3 to 0.6) per decade
1959 to 2001
36
Not clearly different from zero
Mean daily minimum
0.5 C (0.2 to 0.9) per decade
1.0 F (0.3 to 1.6) per decade
1959 to 2001
36
Rise
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
1950 to 2005
Yearly extremes at Santa Ana (Dge): the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
48.9 C (120.0 F)
1951
43.9 C (111.0 F)
55
Coldest night (TNn)
-12.2 C (10.0 F)
1971
-1.1 C (30.0 F)
55
Wettest day (Rx1day)
91.4 mm (3.6 in)
1987
39.9 mm (1.6 in)
55
Wettest five days (Rx5day)
144.2 mm (5.7 in)
2000
66.8 mm (2.6 in)
55
Longest dry spell (CDD)
175 days
1974
96 days
55
Hottest day (TXx)
The hottest day of the year at Santa Ana (Dge), 1950 to 2005. The record is 48.9 C (120.0 F) in 1951, marked on the chart; the median year is 43.9 C (111.0 F).
Hottest day (TXx) at Santa Ana (Dge) by year
Year
Hottest day (TXx)
1950
45.0 C (113.0 F)
1951
48.9 C (120.0 F)
1952
48.9 C (120.0 F)
1953
37.8 C (100.0 F)
1954
43.9 C (111.0 F)
1955
41.7 C (107.1 F)
1957
47.8 C (118.0 F)
1958
37.8 C (100.0 F)
1959
43.9 C (111.0 F)
1960
36.7 C (98.1 F)
1961
45.0 C (113.0 F)
1962
45.0 C (113.0 F)
1963
45.0 C (113.0 F)
1964
45.0 C (113.0 F)
1965
41.7 C (107.1 F)
1966
43.9 C (111.0 F)
1967
45.0 C (113.0 F)
1968
45.6 C (114.1 F)
1969
46.7 C (116.1 F)
1970
45.0 C (113.0 F)
1971
42.8 C (109.0 F)
1972
43.9 C (111.0 F)
1973
44.4 C (111.9 F)
1974
45.0 C (113.0 F)
1975
42.8 C (109.0 F)
1976
42.8 C (109.0 F)
1977
43.9 C (111.0 F)
1978
45.0 C (113.0 F)
1979
45.6 C (114.1 F)
1980
43.9 C (111.0 F)
1981
43.9 C (111.0 F)
1982
45.6 C (114.1 F)
1983
43.9 C (111.0 F)
1984
42.8 C (109.0 F)
1985
43.9 C (111.0 F)
1986
41.7 C (107.1 F)
1987
41.7 C (107.1 F)
1988
43.3 C (109.9 F)
1989
44.4 C (111.9 F)
1990
43.9 C (111.0 F)
1991
41.1 C (106.0 F)
1992
41.7 C (107.1 F)
1993
42.8 C (109.0 F)
1994
45.0 C (113.0 F)
1995
43.9 C (111.0 F)
1996
43.9 C (111.0 F)
1997
42.8 C (109.0 F)
1998
43.9 C (111.0 F)
1999
41.1 C (106.0 F)
2000
43.9 C (111.0 F)
2001
43.9 C (111.0 F)
2002
44.4 C (111.9 F)
2003
40.6 C (105.1 F)
2004
41.7 C (107.1 F)
2005
40.0 C (104.0 F)
Coldest night (TNn)
The coldest night of the year at Santa Ana (Dge), 1950 to 2005. The record is -12.2 C (10.0 F) in 1971, marked on the chart; the median year is -1.1 C (30.0 F).
Coldest night (TNn) at Santa Ana (Dge) by year
Year
Coldest night (TNn)
1950
0.0 C (32.0 F)
1951
0.0 C (32.0 F)
1952
0.0 C (32.0 F)
1953
0.0 C (32.0 F)
1954
0.6 C (33.1 F)
1955
11.7 C (53.1 F)
1957
2.8 C (37.0 F)
1958
1.7 C (35.1 F)
1959
0.0 C (32.0 F)
1960
-8.3 C (17.1 F)
1961
0.6 C (33.1 F)
1962
1.7 C (35.1 F)
1963
-1.1 C (30.0 F)
1964
-6.1 C (21.0 F)
1965
-6.1 C (21.0 F)
1966
-7.2 C (19.0 F)
1967
-6.1 C (21.0 F)
1968
-7.2 C (19.0 F)
1969
-8.3 C (17.1 F)
1970
-3.3 C (26.1 F)
1971
-12.2 C (10.0 F)
1972
-5.0 C (23.0 F)
1973
-4.4 C (24.1 F)
1974
-2.8 C (27.0 F)
1975
-2.8 C (27.0 F)
1976
-2.2 C (28.0 F)
1977
0.0 C (32.0 F)
1978
0.0 C (32.0 F)
1979
0.0 C (32.0 F)
1980
0.0 C (32.0 F)
1981
0.0 C (32.0 F)
1982
0.0 C (32.0 F)
1983
0.0 C (32.0 F)
1984
0.0 C (32.0 F)
1985
0.0 C (32.0 F)
1986
0.0 C (32.0 F)
1987
-2.8 C (27.0 F)
1988
-6.1 C (21.0 F)
1989
-3.3 C (26.1 F)
1990
-2.2 C (28.0 F)
1991
-4.4 C (24.1 F)
1992
0.0 C (32.0 F)
1993
0.6 C (33.1 F)
1994
-2.2 C (28.0 F)
1995
-1.1 C (30.0 F)
1996
-1.1 C (30.0 F)
1997
-3.3 C (26.1 F)
1998
-1.1 C (30.0 F)
1999
0.0 C (32.0 F)
2000
0.6 C (33.1 F)
2001
-1.1 C (30.0 F)
2002
-2.2 C (28.0 F)
2003
-2.2 C (28.0 F)
2004
-2.2 C (28.0 F)
2005
5.6 C (42.1 F)
Wettest day (Rx1day)
The wettest day of the year at Santa Ana (Dge), 1950 to 2005. The record is 91.4 mm (3.6 in) in 1987, marked on the chart; the median year is 39.9 mm (1.6 in).
Wettest day (Rx1day) at Santa Ana (Dge) by year
Year
Wettest day (Rx1day)
1950
30.0 mm (1.2 in)
1951
78.0 mm (3.1 in)
1952
35.8 mm (1.4 in)
1953
19.8 mm (0.8 in)
1954
25.9 mm (1.0 in)
1955
31.0 mm (1.2 in)
1957
24.9 mm (1.0 in)
1958
8.9 mm (0.35 in)
1959
10.9 mm (0.4 in)
1960
11.9 mm (0.5 in)
1961
31.8 mm (1.3 in)
1962
16.8 mm (0.7 in)
1963
26.4 mm (1.0 in)
1964
36.3 mm (1.4 in)
1965
36.3 mm (1.4 in)
1966
31.8 mm (1.3 in)
1967
47.0 mm (1.9 in)
1968
54.9 mm (2.2 in)
1969
39.9 mm (1.6 in)
1970
69.9 mm (2.8 in)
1971
30.5 mm (1.2 in)
1972
33.8 mm (1.3 in)
1973
39.9 mm (1.6 in)
1974
56.9 mm (2.2 in)
1975
31.8 mm (1.3 in)
1976
56.9 mm (2.2 in)
1977
18.8 mm (0.7 in)
1978
83.3 mm (3.3 in)
1979
76.5 mm (3.0 in)
1980
34.3 mm (1.4 in)
1981
42.4 mm (1.7 in)
1982
50.3 mm (2.0 in)
1983
47.0 mm (1.9 in)
1984
68.8 mm (2.7 in)
1985
48.3 mm (1.9 in)
1986
18.3 mm (0.7 in)
1987
91.4 mm (3.6 in)
1988
49.8 mm (2.0 in)
1989
74.9 mm (2.9 in)
1990
58.4 mm (2.3 in)
1991
36.8 mm (1.4 in)
1992
72.6 mm (2.9 in)
1993
29.0 mm (1.1 in)
1994
88.9 mm (3.5 in)
1995
54.4 mm (2.1 in)
1996
30.0 mm (1.2 in)
1997
52.6 mm (2.1 in)
1998
78.0 mm (3.1 in)
1999
54.4 mm (2.1 in)
2000
81.3 mm (3.2 in)
2001
50.8 mm (2.0 in)
2002
31.8 mm (1.3 in)
2003
25.9 mm (1.0 in)
2004
79.8 mm (3.1 in)
2005
0.0 mm (0.00 in)
Wettest five days (Rx5day)
The wettest five days of the year at Santa Ana (Dge), 1950 to 2005. The record is 144.2 mm (5.7 in) in 2000, marked on the chart; the median year is 66.8 mm (2.6 in).
Wettest five days (Rx5day) at Santa Ana (Dge) by year
Year
Wettest five days (Rx5day)
1950
55.9 mm (2.2 in)
1951
131.8 mm (5.2 in)
1952
69.2 mm (2.7 in)
1953
56.6 mm (2.2 in)
1954
53.5 mm (2.1 in)
1955
57.3 mm (2.3 in)
1957
30.7 mm (1.2 in)
1958
22.4 mm (0.9 in)
1959
15.7 mm (0.6 in)
1960
21.8 mm (0.9 in)
1961
56.7 mm (2.2 in)
1962
16.8 mm (0.7 in)
1963
71.1 mm (2.8 in)
1964
59.9 mm (2.4 in)
1965
62.0 mm (2.4 in)
1966
88.5 mm (3.5 in)
1967
95.3 mm (3.8 in)
1968
71.9 mm (2.8 in)
1969
63.6 mm (2.5 in)
1970
69.9 mm (2.8 in)
1971
67.9 mm (2.7 in)
1972
49.5 mm (1.9 in)
1973
53.6 mm (2.1 in)
1974
56.9 mm (2.2 in)
1975
37.9 mm (1.5 in)
1976
63.8 mm (2.5 in)
1977
18.8 mm (0.7 in)
1978
87.1 mm (3.4 in)
1979
76.5 mm (3.0 in)
1980
54.6 mm (2.1 in)
1981
58.4 mm (2.3 in)
1982
91.2 mm (3.6 in)
1983
70.4 mm (2.8 in)
1984
117.1 mm (4.6 in)
1985
112.1 mm (4.4 in)
1986
37.8 mm (1.5 in)
1987
91.4 mm (3.6 in)
1988
115.4 mm (4.5 in)
1989
86.3 mm (3.4 in)
1990
90.1 mm (3.5 in)
1991
41.6 mm (1.6 in)
1992
95.3 mm (3.8 in)
1993
62.8 mm (2.5 in)
1994
107.7 mm (4.2 in)
1995
96.9 mm (3.8 in)
1996
67.3 mm (2.6 in)
1997
66.8 mm (2.6 in)
1998
89.5 mm (3.5 in)
1999
99.2 mm (3.9 in)
2000
144.2 mm (5.7 in)
2001
75.7 mm (3.0 in)
2002
52.6 mm (2.1 in)
2003
25.9 mm (1.0 in)
2004
79.8 mm (3.1 in)
2005
0.0 mm (0.00 in)
Longest dry spell (CDD)
The longest dry spell of the year at Santa Ana (Dge), 1950 to 2005. The record is 175 days in 1974, marked on the chart; the median year is 96 days.
Longest dry spell (CDD) at Santa Ana (Dge) by year
Year
Longest dry spell (CDD)
1950
122 days
1951
61 days
1952
78 days
1953
58 days
1954
99 days
1955
96 days
1957
34 days
1958
41 days
1959
132 days
1960
106 days
1961
48 days
1962
156 days
1963
74 days
1964
99 days
1965
124 days
1966
73 days
1967
55 days
1968
116 days
1969
71 days
1970
76 days
1971
51 days
1972
148 days
1973
134 days
1974
175 days
1975
159 days
1976
159 days
1977
159 days
1978
146 days
1979
174 days
1980
116 days
1981
59 days
1982
74 days
1983
109 days
1984
90 days
1985
78 days
1986
110 days
1987
80 days
1988
68 days
1989
84 days
1990
134 days
1991
104 days
1992
67 days
1993
60 days
1994
83 days
1995
67 days
1996
127 days
1997
44 days
1998
97 days
1999
101 days
2000
107 days
2001
61 days
2002
156 days
2003
82 days
2004
127 days
2005
91 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.
Frost Dates and Growing Season
25 years with a frost
Across 25 years with a frost, the median last spring frost at Santa Ana (Dge) falls on 20 February and the median first autumn frost on 3 December, which leaves a median of 288 days between them.
Fitted over all years, the growing season changes by +14.1 days per decade at this station.
Frost dates and growing season at Santa Ana (Dge)
Measure
Median, all years
Earliest period
Recent period (1963 to 2001)
Recent against earliest
Fitted trend
Last spring frost
20 February
n/a
20 February
n/a
-10.4 days per decade
First autumn frost
3 December
n/a
3 December
n/a
+3.6 days per decade
Growing days
288 days
n/a
288 days
n/a
+14.1 days per decade
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
41 years, 1950 to 2001
A day with at least 47.5 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 103.4 mm (4.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Santa Ana (Dge): the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
47.5 mm (1.9 in)
5 years
65.4 mm (2.6 in)
10 years
75.9 mm (3.0 in)
25 years
87.9 mm (3.5 in)
50 years
96.0 mm (3.8 in)
Longer than the 41 years of record
100 years
103.4 mm (4.1 in)
Longer than the 41 years of record
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 41 years of values from 1950 to 2001.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 88.9 mm (3.5 in) in 1994; 83.3 mm (3.3 in) in 1978; 81.3 mm (3.2 in) in 2000.
Download the Data
Data for Santa Ana (Dge) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Santa Ana (Dge) 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.