Record envelope, standing records and threshold days for Tustin McAf (USW00093114), California, United States, with 54 years of record.
Key Facts for Tustin McAf
Tustin McAf (USW00093114) is a weather station in California, United States at 33.70 latitude and -117.83 longitude, 18 m (59 ft) above sea level.
The station reports from 1945 to 1998, 54 years of record.
1,464 records set at Tustin McAf still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Tustin McAf tied a daily record high minimum temperature of 15.6 C (60.1 F) on 23 April 1998.
About the Station
Location: California, United States, 33.70 latitude, -117.83 longitude.
Elevation: 18 m (59 ft).
Period of record: 1945 to 1998, 54 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Tustin McAf. 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 Tustin McAf, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
31.7 C (89.1 F)
-2.2 C (28.0 F)
n/a
n/a
Feb
32.8 C (91.0 F)
-1.7 C (28.9 F)
n/a
n/a
Mar
36.1 C (97.0 F)
-0.6 C (30.9 F)
n/a
n/a
Apr
42.2 C (108.0 F)
1.1 C (34.0 F)
n/a
n/a
May
38.9 C (102.0 F)
3.3 C (37.9 F)
n/a
n/a
Jun
41.7 C (107.1 F)
5.6 C (42.1 F)
n/a
n/a
Jul
44.4 C (111.9 F)
7.2 C (45.0 F)
n/a
n/a
Aug
40.0 C (104.0 F)
8.9 C (48.0 F)
n/a
n/a
Sep
44.4 C (111.9 F)
6.7 C (44.1 F)
n/a
n/a
Oct
40.6 C (105.1 F)
-1.1 C (30.0 F)
n/a
n/a
Nov
35.0 C (95.0 F)
0.0 C (32.0 F)
n/a
n/a
Dec
33.9 C (93.0 F)
-3.9 C (25.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Tustin McAf still stand. 1945 holds the most, with 112.
Standing records at Tustin McAf by the year they were set
Year set
Standing records
1945
112
1946
75
1947
26
1951
6
1952
30
1953
10
1963
21
1967
63
1968
33
1969
36
1970
27
1971
76
1972
39
1973
77
1974
34
1975
31
1976
39
1977
16
1978
24
1979
33
1980
42
1981
32
1982
21
1983
45
1984
48
1985
26
1986
35
1987
49
1988
47
1989
40
1990
41
1991
23
1992
61
1993
36
1994
31
1995
22
1996
28
1997
26
1998
3
All-Time Record Progression
1 new records
1 all-time records were set at Tustin McAf between 6 December 1997 and 6 December 1997. Each dot is a new record.
When Tustin McAf set new all-time records
Date
Kind
Detail
1997-12-06
Record daily precipitation
Record daily precipitation 182.4 mm (7.2 in)
Wettest Day of Each Month
Dec: 182.4 mm (7.2 in)
The wettest day on record for each calendar month at Tustin McAf. The most was 182.4 mm (7.2 in) on 6 December 1997.
Record daily precipitation for each month at Tustin McAf
Month
Record daily precipitation (mm)
Date
Jan
82.3 mm (3.2 in)
4 January 1995
Feb
70.1 mm (2.8 in)
24 February 1998
Mar
103.6 mm (4.1 in)
1 March 1983
Apr
33.3 mm (1.3 in)
19 April 1967
May
50.0 mm (2.0 in)
8 May 1977
Jun
28.7 mm (1.1 in)
5 June 1993
Jul
4.6 mm (0.18 in)
15 July 1977
Aug
29.5 mm (1.2 in)
17 August 1977
Sep
43.7 mm (1.7 in)
5 September 1978
Oct
23.9 mm (0.9 in)
30 October 1996
Nov
78.7 mm (3.1 in)
9 November 1982
Dec
182.4 mm (7.2 in)
6 December 1997
Period of Record Coverage
1945 to 1998
Complete yearUnder 90 percent of days
39 years of record at Tustin McAf, 1945 to 1998. 9 years have data for under 90 percent of days and are left out of rankings: 1945, 1947, 1951, 1952, 1953, 1963, 1967, 1969 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 29 complete years at Tustin McAf, 1946 to 1997. Blue stripes are years cooler than the station's own mean of 17.9 C (64.3 F); red stripes are warmer. The coolest year was 1946, at 15.6 C (60.1 F), and the warmest was 1992, at 19.7 C (67.5 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Tustin McAf as warming stripes, 1946 to 1997
Year
Annual mean temperature
Difference from the station mean
1946
15.6 C
-2.29 C
1970
17.3 C
-0.62 C
1971
16.1 C
-1.81 C
1972
16.9 C
-1.05 C
1973
15.7 C
-2.23 C
1974
16.8 C
-1.13 C
1975
16.1 C
-1.79 C
1976
17.8 C
-0.10 C
1977
17.5 C
-0.44 C
1978
17.9 C
-0.02 C
1979
17.9 C
-0.06 C
1980
18.3 C
+0.34 C
1981
18.9 C
+0.94 C
1982
17.8 C
-0.10 C
1983
18.9 C
+0.94 C
1984
19.0 C
+1.06 C
1985
18.0 C
+0.11 C
1986
18.1 C
+0.22 C
1987
17.8 C
-0.08 C
1988
18.4 C
+0.43 C
1989
18.4 C
+0.48 C
1990
18.8 C
+0.88 C
1991
18.3 C
+0.42 C
1992
19.7 C
+1.78 C
1993
19.2 C
+1.31 C
1994
18.7 C
+0.80 C
1995
18.4 C
+0.44 C
1996
18.7 C
+0.75 C
1997
18.7 C
+0.77 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
1945 to 1998
Yearly extremes at Tustin McAf: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
44.4 C (111.9 F)
1963
37.8 C (100.0 F)
39
Coldest night (TNn)
-3.9 C (25.0 F)
1990
0.6 C (33.1 F)
39
Wettest day (Rx1day)
182.4 mm (7.2 in)
1997
38.0 mm (1.5 in)
38
Wettest five days (Rx5day)
213.9 mm (8.4 in)
1983
60.8 mm (2.4 in)
38
Longest dry spell (CDD)
265 days
1970
126 days
38
Hottest day (TXx)
The hottest day of the year at Tustin McAf, 1945 to 1998. The record is 44.4 C (111.9 F) in 1963, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Tustin McAf by year
Year
Hottest day (TXx)
1945
35.6 C (96.1 F)
1946
33.3 C (91.9 F)
1947
34.4 C (93.9 F)
1951
29.4 C (84.9 F)
1952
31.7 C (89.1 F)
1953
34.4 C (93.9 F)
1963
44.4 C (111.9 F)
1967
36.7 C (98.1 F)
1968
37.2 C (99.0 F)
1969
37.2 C (99.0 F)
1970
38.3 C (100.9 F)
1971
38.9 C (102.0 F)
1972
36.1 C (97.0 F)
1973
37.2 C (99.0 F)
1974
36.1 C (97.0 F)
1975
38.3 C (100.9 F)
1976
38.9 C (102.0 F)
1977
35.6 C (96.1 F)
1978
40.0 C (104.0 F)
1979
39.4 C (102.9 F)
1980
37.8 C (100.0 F)
1981
41.7 C (107.1 F)
1982
39.4 C (102.9 F)
1983
40.0 C (104.0 F)
1984
42.2 C (108.0 F)
1985
44.4 C (111.9 F)
1986
37.2 C (99.0 F)
1987
40.6 C (105.1 F)
1988
43.3 C (109.9 F)
1989
42.2 C (108.0 F)
1990
41.1 C (106.0 F)
1991
39.4 C (102.9 F)
1992
40.0 C (104.0 F)
1993
35.0 C (95.0 F)
1994
38.9 C (102.0 F)
1995
36.1 C (97.0 F)
1996
37.2 C (99.0 F)
1997
36.1 C (97.0 F)
1998
27.8 C (82.0 F)
Coldest night (TNn)
The coldest night of the year at Tustin McAf, 1945 to 1998. The record is -3.9 C (25.0 F) in 1990, marked on the chart; the median year is 0.6 C (33.1 F).
Coldest night (TNn) at Tustin McAf by year
Year
Coldest night (TNn)
1945
-1.1 C (30.0 F)
1946
-1.7 C (28.9 F)
1947
-0.6 C (30.9 F)
1951
0.0 C (32.0 F)
1952
-2.2 C (28.0 F)
1953
3.9 C (39.0 F)
1963
3.9 C (39.0 F)
1967
-0.6 C (30.9 F)
1968
-2.2 C (28.0 F)
1969
1.1 C (34.0 F)
1970
1.1 C (34.0 F)
1971
-1.1 C (30.0 F)
1972
-1.7 C (28.9 F)
1973
-1.1 C (30.0 F)
1974
0.0 C (32.0 F)
1975
0.0 C (32.0 F)
1976
-0.6 C (30.9 F)
1977
3.3 C (37.9 F)
1978
-2.2 C (28.0 F)
1979
-0.6 C (30.9 F)
1980
1.1 C (34.0 F)
1981
1.7 C (35.1 F)
1982
1.7 C (35.1 F)
1983
0.0 C (32.0 F)
1984
2.2 C (36.0 F)
1985
0.6 C (33.1 F)
1986
1.7 C (35.1 F)
1987
-1.1 C (30.0 F)
1988
1.1 C (34.0 F)
1989
0.6 C (33.1 F)
1990
-3.9 C (25.0 F)
1991
0.0 C (32.0 F)
1992
1.7 C (35.1 F)
1993
1.7 C (35.1 F)
1994
1.7 C (35.1 F)
1995
3.9 C (39.0 F)
1996
2.8 C (37.0 F)
1997
2.8 C (37.0 F)
1998
2.8 C (37.0 F)
Wettest day (Rx1day)
The wettest day of the year at Tustin McAf, 1945 to 1998. The record is 182.4 mm (7.2 in) in 1997, marked on the chart; the median year is 38.0 mm (1.5 in).
Wettest day (Rx1day) at Tustin McAf by year
Year
Wettest day (Rx1day)
1945
58.9 mm (2.3 in)
1946
27.9 mm (1.1 in)
1947
9.7 mm (0.38 in)
1951
n/a
1952
0.0 mm (0.00 in)
1953
0.3 mm (0.01 in)
1963
57.7 mm (2.3 in)
1967
33.3 mm (1.3 in)
1968
17.0 mm (0.7 in)
1969
54.9 mm (2.2 in)
1970
29.7 mm (1.2 in)
1971
22.1 mm (0.9 in)
1972
32.5 mm (1.3 in)
1973
27.7 mm (1.1 in)
1974
43.2 mm (1.7 in)
1975
32.5 mm (1.3 in)
1976
41.1 mm (1.6 in)
1977
50.0 mm (2.0 in)
1978
43.7 mm (1.7 in)
1979
38.9 mm (1.5 in)
1980
65.0 mm (2.6 in)
1981
28.4 mm (1.1 in)
1982
78.7 mm (3.1 in)
1983
103.6 mm (4.1 in)
1984
23.9 mm (0.9 in)
1985
37.1 mm (1.5 in)
1986
43.2 mm (1.7 in)
1987
33.0 mm (1.3 in)
1988
26.7 mm (1.1 in)
1989
13.5 mm (0.5 in)
1990
52.8 mm (2.1 in)
1991
21.8 mm (0.9 in)
1992
39.1 mm (1.5 in)
1993
48.8 mm (1.9 in)
1994
36.6 mm (1.4 in)
1995
82.3 mm (3.2 in)
1996
48.8 mm (1.9 in)
1997
182.4 mm (7.2 in)
1998
70.1 mm (2.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Tustin McAf, 1945 to 1998. The record is 213.9 mm (8.4 in) in 1983, marked on the chart; the median year is 60.8 mm (2.4 in).
Wettest five days (Rx5day) at Tustin McAf by year
Year
Wettest five days (Rx5day)
1945
77.2 mm (3.0 in)
1946
76.7 mm (3.0 in)
1947
9.7 mm (0.38 in)
1951
n/a
1952
0.0 mm (0.00 in)
1953
0.3 mm (0.01 in)
1963
61.0 mm (2.4 in)
1967
61.6 mm (2.4 in)
1968
32.2 mm (1.3 in)
1969
140.7 mm (5.5 in)
1970
57.1 mm (2.2 in)
1971
60.5 mm (2.4 in)
1972
65.1 mm (2.6 in)
1973
50.7 mm (2.0 in)
1974
91.7 mm (3.6 in)
1975
51.1 mm (2.0 in)
1976
54.7 mm (2.2 in)
1977
58.6 mm (2.3 in)
1978
99.7 mm (3.9 in)
1979
55.7 mm (2.2 in)
1980
139.0 mm (5.5 in)
1981
53.9 mm (2.1 in)
1982
91.4 mm (3.6 in)
1983
213.9 mm (8.4 in)
1984
45.4 mm (1.8 in)
1985
46.8 mm (1.8 in)
1986
86.8 mm (3.4 in)
1987
45.2 mm (1.8 in)
1988
43.7 mm (1.7 in)
1989
16.3 mm (0.6 in)
1990
65.7 mm (2.6 in)
1991
38.3 mm (1.5 in)
1992
83.8 mm (3.3 in)
1993
143.6 mm (5.7 in)
1994
57.7 mm (2.3 in)
1995
122.7 mm (4.8 in)
1996
78.3 mm (3.1 in)
1997
186.8 mm (7.4 in)
1998
115.8 mm (4.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Tustin McAf, 1945 to 1998. The record is 265 days in 1970, marked on the chart; the median year is 126 days.
Longest dry spell (CDD) at Tustin McAf by year
Year
Longest dry spell (CDD)
1945
144 days
1946
135 days
1947
65 days
1951
n/a
1952
25 days
1953
31 days
1963
56 days
1967
125 days
1968
93 days
1969
68 days
1970
265 days
1971
128 days
1972
103 days
1973
185 days
1974
121 days
1975
138 days
1976
84 days
1977
92 days
1978
83 days
1979
134 days
1980
207 days
1981
127 days
1982
126 days
1983
105 days
1984
109 days
1985
160 days
1986
99 days
1987
132 days
1988
149 days
1989
177 days
1990
162 days
1991
106 days
1992
100 days
1993
126 days
1994
138 days
1995
148 days
1996
194 days
1997
225 days
1998
12 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 Tustin McAf standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tustin McAf 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.