Record envelope, standing records and threshold days for Tustin Irvine Rch (USC00049087), California, United States, with 102 years of record.
Key Facts for Tustin Irvine Rch
Tustin Irvine Rch (USC00049087) is a weather station in California, United States at 33.70 latitude and -117.75 longitude, 72 m (235 ft) above sea level.
The station reports from 1902 to 2003, 102 years of record.
1,464 records set at Tustin Irvine Rch still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Tustin Irvine Rch set a daily record low maximum temperature of 17.8 C (64.0 F) on 21 June 2003.
About the Station
Location: California, United States, 33.70 latitude, -117.75 longitude.
Elevation: 72 m (235 ft).
Period of record: 1902 to 2003, 102 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 Irvine Rch. 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 Irvine Rch, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
35.0 C (95.0 F)
-7.8 C (18.0 F)
n/a
n/a
Feb
33.9 C (93.0 F)
-3.9 C (25.0 F)
n/a
n/a
Mar
36.7 C (98.1 F)
-3.3 C (26.1 F)
n/a
n/a
Apr
41.1 C (106.0 F)
-0.6 C (30.9 F)
n/a
n/a
May
40.6 C (105.1 F)
1.1 C (34.0 F)
n/a
n/a
Jun
42.8 C (109.0 F)
2.8 C (37.0 F)
n/a
n/a
Jul
43.3 C (109.9 F)
5.0 C (41.0 F)
n/a
n/a
Aug
43.3 C (109.9 F)
5.6 C (42.1 F)
n/a
n/a
Sep
43.9 C (111.0 F)
3.9 C (39.0 F)
n/a
n/a
Oct
42.2 C (108.0 F)
-1.7 C (28.9 F)
n/a
n/a
Nov
40.6 C (105.1 F)
-3.9 C (25.0 F)
n/a
n/a
Dec
36.1 C (97.0 F)
-5.0 C (23.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Tustin Irvine Rch still stand. 1997 holds the most, with 52.
Standing records at Tustin Irvine Rch by the year they were set
Year set
Standing records
1915
8
1916
45
1917
37
1918
24
1919
29
1920
20
1921
37
1922
33
1923
30
1924
37
1925
13
1926
26
1927
22
1928
26
1929
14
1930
26
1931
44
1932
16
1933
17
1934
38
1935
27
1936
27
1937
36
1938
19
1939
26
1940
11
1941
10
1942
9
1943
13
1944
9
1945
14
1946
12
1947
7
1948
17
1949
24
1950
23
1951
13
1952
13
1953
24
1954
8
1955
14
1956
16
1957
11
1958
14
1959
10
1960
7
1961
8
1962
10
1963
8
1964
9
1965
13
1966
6
1967
7
1968
7
1969
9
1970
7
1971
16
1972
15
1973
9
1974
2
1975
15
1976
7
1977
6
1978
10
1979
27
1980
15
1981
18
1982
23
1983
16
1984
27
1985
15
1986
7
1987
8
1988
19
1989
13
1990
7
1991
6
1992
4
1993
6
1994
14
1995
10
1996
8
1997
52
1998
19
1999
10
2000
6
2001
6
2002
1
2003
7
All-Time Record Progression
4 new records
4 all-time records were set at Tustin Irvine Rch between 26 January 1956 and 6 December 1997. Each dot is a new record.
When Tustin Irvine Rch set new all-time records
Date
Kind
Detail
1956-01-26
Record daily precipitation
Record daily precipitation 114.8 mm (4.5 in)
1963-09-26
Record high maximum temperature
Record high maximum temperature 43.9 C (111.0 F)
1984-09-09
Record high minimum temperature
Record high minimum temperature 25.6 C (78.1 F)
1997-12-06
Record daily precipitation
Record daily precipitation 131.3 mm (5.2 in)
Wettest Day of Each Month
Dec: 131.3 mm (5.2 in)
The wettest day on record for each calendar month at Tustin Irvine Rch. The most was 131.3 mm (5.2 in) on 6 December 1997.
Record daily precipitation for each month at Tustin Irvine Rch
Month
Record daily precipitation (mm)
Date
Jan
114.8 mm (4.5 in)
26 January 1956
Feb
101.6 mm (4.0 in)
7 February 1937
Mar
93.2 mm (3.7 in)
13 March 1905
Apr
105.2 mm (4.1 in)
6 April 1926
May
46.2 mm (1.8 in)
9 May 1977
Jun
34.5 mm (1.4 in)
5 June 1993
Jul
3.0 mm (0.12 in)
30 July 1965
Aug
29.0 mm (1.1 in)
17 August 1977
Sep
78.0 mm (3.1 in)
25 September 1939
Oct
38.1 mm (1.5 in)
30 October 1920
Nov
82.8 mm (3.3 in)
22 November 1996
Dec
131.3 mm (5.2 in)
6 December 1997
Period of Record Coverage
1915 to 2003
Complete yearUnder 90 percent of days
89 years of record at Tustin Irvine Rch, 1915 to 2003. 6 years have data for under 90 percent of days and are left out of rankings: 1943, 1980, 1982, 1995, 2001, 2003.
Cooler than the station meanWarmer than the station mean
One stripe for each of 76 complete years at Tustin Irvine Rch, 1915 to 2002. Blue stripes are years cooler than the station's own mean of 16.9 C (62.4 F); red stripes are warmer. The coolest year was 1916, at 15.0 C (59.1 F), and the warmest was 1997, at 20.3 C (68.6 F). The strongest colour marks a difference of 3.5 C (6.3 F).
Annual mean temperature at Tustin Irvine Rch as warming stripes, 1915 to 2002
Year
Annual mean temperature
Difference from the station mean
1915
16.2 C
-0.64 C
1916
15.0 C
-1.84 C
1917
15.5 C
-1.40 C
1918
16.1 C
-0.79 C
1919
16.2 C
-0.69 C
1920
15.6 C
-1.27 C
1921
16.0 C
-0.93 C
1922
15.7 C
-1.17 C
1923
15.8 C
-1.08 C
1924
15.9 C
-0.99 C
1925
17.0 C
+0.12 C
1927
17.2 C
+0.29 C
1928
18.3 C
+1.45 C
1929
17.6 C
+0.74 C
1930
17.3 C
+0.46 C
1931
18.6 C
+1.71 C
1932
17.0 C
+0.10 C
1933
16.9 C
+0.06 C
1934
19.4 C
+2.47 C
1935
16.8 C
-0.07 C
1936
15.6 C
-1.26 C
1937
15.5 C
-1.35 C
1938
16.4 C
-0.51 C
1939
16.5 C
-0.39 C
1940
17.6 C
+0.67 C
1941
17.0 C
+0.16 C
1942
16.8 C
-0.11 C
1944
16.1 C
-0.75 C
1945
16.3 C
-0.58 C
1946
16.0 C
-0.91 C
1947
16.8 C
-0.12 C
1948
15.4 C
-1.44 C
1949
16.0 C
-0.89 C
1950
16.5 C
-0.41 C
1951
16.1 C
-0.74 C
1952
15.7 C
-1.14 C
1953
16.1 C
-0.81 C
1954
16.6 C
-0.28 C
1955
16.1 C
-0.78 C
1956
16.6 C
-0.24 C
1957
17.1 C
+0.22 C
1958
17.8 C
+0.92 C
1959
17.8 C
+0.94 C
1960
16.6 C
-0.32 C
1961
16.6 C
-0.27 C
1962
16.1 C
-0.83 C
1963
17.0 C
+0.07 C
1965
16.6 C
-0.32 C
1966
16.9 C
+0.04 C
1967
17.2 C
+0.30 C
1969
16.8 C
-0.09 C
1970
17.0 C
+0.14 C
1971
16.2 C
-0.68 C
1972
16.0 C
-0.86 C
1974
16.8 C
-0.06 C
1975
15.6 C
-1.32 C
1976
17.3 C
+0.43 C
1977
17.3 C
+0.42 C
1978
17.5 C
+0.59 C
1979
17.3 C
+0.45 C
1984
18.4 C
+1.49 C
1987
17.1 C
+0.21 C
1988
17.6 C
+0.75 C
1989
17.2 C
+0.30 C
1990
17.3 C
+0.39 C
1991
16.9 C
+0.03 C
1992
17.9 C
+1.01 C
1993
17.8 C
+0.96 C
1994
17.8 C
+0.89 C
1996
18.9 C
+1.99 C
1997
20.3 C
+3.46 C
1998
18.9 C
+2.01 C
1999
18.3 C
+1.43 C
2000
17.5 C
+0.63 C
2001
17.2 C
+0.30 C
2002
16.6 C
-0.29 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1915 to 2002. In Fahrenheit: 0.3 F (0.2 to 0.5) per decade. The slope is a straight line fitted to 76 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Tustin Irvine Rch
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.3) per decade
0.3 F (0.2 to 0.5) per decade
1915 to 2002
76
Rise
Mean daily maximum
0.11 C (0.02 to 0.20) per decade
0.20 F (0.03 to 0.36) per decade
1915 to 2002
76
Rise
Mean daily minimum
0.3 C (0.2 to 0.3) per decade
0.5 F (0.3 to 0.6) per decade
1915 to 2002
76
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
1902 to 2003
Yearly extremes at Tustin Irvine Rch: 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
39.4 C (102.9 F)
89
Coldest night (TNn)
-7.8 C (18.0 F)
1937
-1.7 C (28.9 F)
89
Wettest day (Rx1day)
131.3 mm (5.2 in)
1997
41.9 mm (1.6 in)
102
Wettest five days (Rx5day)
180.9 mm (7.1 in)
1956
71.9 mm (2.8 in)
102
Longest dry spell (CDD)
263 days
1999
120 days
102
Hottest day (TXx)
The hottest day of the year at Tustin Irvine Rch, 1902 to 2003. The record is 43.9 C (111.0 F) in 1963, marked on the chart; the median year is 39.4 C (102.9 F).
Hottest day (TXx) at Tustin Irvine Rch by year
Year
Hottest day (TXx)
1902
n/a
1903
n/a
1904
n/a
1905
n/a
1906
n/a
1907
n/a
1908
n/a
1909
n/a
1910
n/a
1911
n/a
1912
n/a
1913
n/a
1914
n/a
1915
38.3 C (100.9 F)
1916
36.7 C (98.1 F)
1917
41.7 C (107.1 F)
1918
39.4 C (102.9 F)
1919
36.7 C (98.1 F)
1920
35.6 C (96.1 F)
1921
38.9 C (102.0 F)
1922
40.6 C (105.1 F)
1923
36.7 C (98.1 F)
1924
40.6 C (105.1 F)
1925
36.1 C (97.0 F)
1926
36.1 C (97.0 F)
1927
38.9 C (102.0 F)
1928
41.1 C (106.0 F)
1929
42.2 C (108.0 F)
1930
38.9 C (102.0 F)
1931
39.4 C (102.9 F)
1932
37.8 C (100.0 F)
1933
38.9 C (102.0 F)
1934
41.7 C (107.1 F)
1935
38.3 C (100.9 F)
1936
36.1 C (97.0 F)
1937
38.3 C (100.9 F)
1938
36.7 C (98.1 F)
1939
43.3 C (109.9 F)
1940
40.6 C (105.1 F)
1941
37.2 C (99.0 F)
1942
40.6 C (105.1 F)
1943
38.3 C (100.9 F)
1944
39.4 C (102.9 F)
1945
38.9 C (102.0 F)
1946
37.2 C (99.0 F)
1947
39.4 C (102.9 F)
1948
37.2 C (99.0 F)
1949
40.6 C (105.1 F)
1950
41.1 C (106.0 F)
1951
37.8 C (100.0 F)
1952
37.8 C (100.0 F)
1953
40.0 C (104.0 F)
1954
37.2 C (99.0 F)
1955
43.3 C (109.9 F)
1956
40.6 C (105.1 F)
1957
38.9 C (102.0 F)
1958
41.7 C (107.1 F)
1959
38.3 C (100.9 F)
1960
40.6 C (105.1 F)
1961
41.7 C (107.1 F)
1962
36.1 C (97.0 F)
1963
43.9 C (111.0 F)
1964
37.8 C (100.0 F)
1965
39.4 C (102.9 F)
1966
37.8 C (100.0 F)
1967
38.9 C (102.0 F)
1968
37.2 C (99.0 F)
1969
40.0 C (104.0 F)
1970
40.0 C (104.0 F)
1971
42.2 C (108.0 F)
1972
38.3 C (100.9 F)
1973
38.9 C (102.0 F)
1974
37.2 C (99.0 F)
1975
39.4 C (102.9 F)
1976
40.6 C (105.1 F)
1977
37.2 C (99.0 F)
1978
40.6 C (105.1 F)
1979
42.8 C (109.0 F)
1980
36.1 C (97.0 F)
1981
40.6 C (105.1 F)
1982
38.3 C (100.9 F)
1983
40.0 C (104.0 F)
1984
42.2 C (108.0 F)
1985
43.3 C (109.9 F)
1986
37.8 C (100.0 F)
1987
40.6 C (105.1 F)
1988
42.2 C (108.0 F)
1989
41.1 C (106.0 F)
1990
41.1 C (106.0 F)
1991
40.6 C (105.1 F)
1992
37.8 C (100.0 F)
1993
36.7 C (98.1 F)
1994
41.7 C (107.1 F)
1995
38.9 C (102.0 F)
1996
38.9 C (102.0 F)
1997
43.3 C (109.9 F)
1998
40.6 C (105.1 F)
1999
41.1 C (106.0 F)
2000
35.6 C (96.1 F)
2001
40.0 C (104.0 F)
2002
40.0 C (104.0 F)
2003
34.4 C (93.9 F)
Coldest night (TNn)
The coldest night of the year at Tustin Irvine Rch, 1902 to 2003. The record is -7.8 C (18.0 F) in 1937, marked on the chart; the median year is -1.7 C (28.9 F).
Coldest night (TNn) at Tustin Irvine Rch by year
Year
Coldest night (TNn)
1902
n/a
1903
n/a
1904
n/a
1905
n/a
1906
n/a
1907
n/a
1908
n/a
1909
n/a
1910
n/a
1911
n/a
1912
n/a
1913
n/a
1914
n/a
1915
0.0 C (32.0 F)
1916
-2.2 C (28.0 F)
1917
-2.2 C (28.0 F)
1918
-4.4 C (24.1 F)
1919
-5.0 C (23.0 F)
1920
-2.8 C (27.0 F)
1921
-3.9 C (25.0 F)
1922
-5.0 C (23.0 F)
1923
-1.1 C (30.0 F)
1924
-5.0 C (23.0 F)
1925
-0.6 C (30.9 F)
1926
-2.2 C (28.0 F)
1927
0.0 C (32.0 F)
1928
-1.7 C (28.9 F)
1929
-2.2 C (28.0 F)
1930
-1.7 C (28.9 F)
1931
-1.7 C (28.9 F)
1932
-1.1 C (30.0 F)
1933
0.0 C (32.0 F)
1934
2.2 C (36.0 F)
1935
-3.3 C (26.1 F)
1936
-3.3 C (26.1 F)
1937
-7.8 C (18.0 F)
1938
-3.9 C (25.0 F)
1939
-3.3 C (26.1 F)
1940
-0.6 C (30.9 F)
1941
-1.1 C (30.0 F)
1942
-2.8 C (27.0 F)
1943
-2.8 C (27.0 F)
1944
-1.1 C (30.0 F)
1945
-2.8 C (27.0 F)
1946
-3.3 C (26.1 F)
1947
-1.7 C (28.9 F)
1948
-2.8 C (27.0 F)
1949
-3.9 C (25.0 F)
1950
-3.9 C (25.0 F)
1951
-2.2 C (28.0 F)
1952
-2.8 C (27.0 F)
1953
-3.9 C (25.0 F)
1954
-2.8 C (27.0 F)
1955
-2.2 C (28.0 F)
1956
-2.8 C (27.0 F)
1957
0.0 C (32.0 F)
1958
-3.3 C (26.1 F)
1959
0.0 C (32.0 F)
1960
-2.8 C (27.0 F)
1961
-0.6 C (30.9 F)
1962
-2.8 C (27.0 F)
1963
-2.2 C (28.0 F)
1964
-1.7 C (28.9 F)
1965
-2.2 C (28.0 F)
1966
-1.7 C (28.9 F)
1967
-0.6 C (30.9 F)
1968
-4.4 C (24.1 F)
1969
-1.1 C (30.0 F)
1970
-1.1 C (30.0 F)
1971
-2.2 C (28.0 F)
1972
-2.8 C (27.0 F)
1973
1.1 C (34.0 F)
1974
-0.6 C (30.9 F)
1975
-1.1 C (30.0 F)
1976
-2.2 C (28.0 F)
1977
0.6 C (33.1 F)
1978
0.0 C (32.0 F)
1979
-2.2 C (28.0 F)
1980
0.6 C (33.1 F)
1981
-2.2 C (28.0 F)
1982
-1.7 C (28.9 F)
1983
-0.6 C (30.9 F)
1984
0.6 C (33.1 F)
1985
-1.1 C (30.0 F)
1986
0.6 C (33.1 F)
1987
-2.2 C (28.0 F)
1988
-1.7 C (28.9 F)
1989
-2.2 C (28.0 F)
1990
-3.3 C (26.1 F)
1991
0.6 C (33.1 F)
1992
-1.7 C (28.9 F)
1993
-1.7 C (28.9 F)
1994
-2.2 C (28.0 F)
1995
-0.6 C (30.9 F)
1996
0.6 C (33.1 F)
1997
1.7 C (35.1 F)
1998
-3.9 C (25.0 F)
1999
2.2 C (36.0 F)
2000
-0.6 C (30.9 F)
2001
-1.1 C (30.0 F)
2002
0.0 C (32.0 F)
2003
2.2 C (36.0 F)
Wettest day (Rx1day)
The wettest day of the year at Tustin Irvine Rch, 1902 to 2003. The record is 131.3 mm (5.2 in) in 1997, marked on the chart; the median year is 41.9 mm (1.6 in).
Wettest day (Rx1day) at Tustin Irvine Rch by year
Year
Wettest day (Rx1day)
1902
41.9 mm (1.6 in)
1903
82.6 mm (3.3 in)
1904
36.8 mm (1.4 in)
1905
93.2 mm (3.7 in)
1906
31.8 mm (1.3 in)
1907
42.7 mm (1.7 in)
1908
25.9 mm (1.0 in)
1909
53.6 mm (2.1 in)
1910
42.9 mm (1.7 in)
1911
27.2 mm (1.1 in)
1912
41.9 mm (1.6 in)
1913
33.5 mm (1.3 in)
1914
47.2 mm (1.9 in)
1915
39.1 mm (1.5 in)
1916
44.5 mm (1.8 in)
1917
17.8 mm (0.7 in)
1918
29.5 mm (1.2 in)
1919
17.8 mm (0.7 in)
1920
38.1 mm (1.5 in)
1921
38.9 mm (1.5 in)
1922
41.4 mm (1.6 in)
1923
41.9 mm (1.6 in)
1924
30.2 mm (1.2 in)
1925
34.3 mm (1.4 in)
1926
105.2 mm (4.1 in)
1927
96.0 mm (3.8 in)
1928
22.1 mm (0.9 in)
1929
21.6 mm (0.9 in)
1930
71.9 mm (2.8 in)
1931
50.8 mm (2.0 in)
1932
26.7 mm (1.1 in)
1933
41.9 mm (1.6 in)
1934
41.1 mm (1.6 in)
1935
27.4 mm (1.1 in)
1936
36.3 mm (1.4 in)
1937
101.6 mm (4.0 in)
1938
62.2 mm (2.4 in)
1939
78.0 mm (3.1 in)
1940
47.0 mm (1.9 in)
1941
54.4 mm (2.1 in)
1942
27.4 mm (1.1 in)
1943
98.3 mm (3.9 in)
1944
77.0 mm (3.0 in)
1945
55.9 mm (2.2 in)
1946
47.0 mm (1.9 in)
1947
31.8 mm (1.3 in)
1948
26.4 mm (1.0 in)
1949
33.0 mm (1.3 in)
1950
21.8 mm (0.9 in)
1951
76.7 mm (3.0 in)
1952
74.4 mm (2.9 in)
1953
15.5 mm (0.6 in)
1954
50.8 mm (2.0 in)
1955
22.9 mm (0.9 in)
1956
114.8 mm (4.5 in)
1957
40.6 mm (1.6 in)
1958
43.9 mm (1.7 in)
1959
31.5 mm (1.2 in)
1960
41.4 mm (1.6 in)
1961
34.8 mm (1.4 in)
1962
44.5 mm (1.8 in)
1963
51.3 mm (2.0 in)
1964
23.1 mm (0.9 in)
1965
47.5 mm (1.9 in)
1966
43.2 mm (1.7 in)
1967
36.1 mm (1.4 in)
1968
34.5 mm (1.4 in)
1969
83.3 mm (3.3 in)
1970
55.9 mm (2.2 in)
1971
25.4 mm (1.0 in)
1972
18.3 mm (0.7 in)
1973
38.9 mm (1.5 in)
1974
49.3 mm (1.9 in)
1975
28.2 mm (1.1 in)
1976
26.2 mm (1.0 in)
1977
50.3 mm (2.0 in)
1978
49.0 mm (1.9 in)
1979
45.7 mm (1.8 in)
1980
72.1 mm (2.8 in)
1981
49.8 mm (2.0 in)
1982
47.8 mm (1.9 in)
1983
67.6 mm (2.7 in)
1984
30.5 mm (1.2 in)
1985
36.1 mm (1.4 in)
1986
58.4 mm (2.3 in)
1987
30.0 mm (1.2 in)
1988
31.2 mm (1.2 in)
1989
15.0 mm (0.6 in)
1990
42.7 mm (1.7 in)
1991
49.8 mm (2.0 in)
1992
50.8 mm (2.0 in)
1993
56.6 mm (2.2 in)
1994
29.5 mm (1.2 in)
1995
75.2 mm (3.0 in)
1996
82.8 mm (3.3 in)
1997
131.3 mm (5.2 in)
1998
75.4 mm (3.0 in)
1999
27.7 mm (1.1 in)
2000
32.0 mm (1.3 in)
2001
74.9 mm (2.9 in)
2002
41.4 mm (1.6 in)
2003
79.8 mm (3.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Tustin Irvine Rch, 1902 to 2003. The record is 180.9 mm (7.1 in) in 1956, marked on the chart; the median year is 71.9 mm (2.8 in).
Wettest five days (Rx5day) at Tustin Irvine Rch by year
Year
Wettest five days (Rx5day)
1902
74.7 mm (2.9 in)
1903
92.5 mm (3.6 in)
1904
45.7 mm (1.8 in)
1905
144.3 mm (5.7 in)
1906
69.1 mm (2.7 in)
1907
108.2 mm (4.3 in)
1908
60.5 mm (2.4 in)
1909
78.5 mm (3.1 in)
1910
75.2 mm (3.0 in)
1911
55.4 mm (2.2 in)
1912
63.0 mm (2.5 in)
1913
71.7 mm (2.8 in)
1914
123.1 mm (4.8 in)
1915
78.2 mm (3.1 in)
1916
103.9 mm (4.1 in)
1917
35.6 mm (1.4 in)
1918
78.8 mm (3.1 in)
1919
51.9 mm (2.0 in)
1920
48.3 mm (1.9 in)
1921
113.6 mm (4.5 in)
1922
60.7 mm (2.4 in)
1923
42.7 mm (1.7 in)
1924
35.5 mm (1.4 in)
1925
37.9 mm (1.5 in)
1926
144.1 mm (5.7 in)
1927
147.9 mm (5.8 in)
1928
38.8 mm (1.5 in)
1929
34.0 mm (1.3 in)
1930
92.1 mm (3.6 in)
1931
54.3 mm (2.1 in)
1932
53.2 mm (2.1 in)
1933
93.8 mm (3.7 in)
1934
73.6 mm (2.9 in)
1935
29.9 mm (1.2 in)
1936
89.5 mm (3.5 in)
1937
127.8 mm (5.0 in)
1938
162.0 mm (6.4 in)
1939
82.3 mm (3.2 in)
1940
77.2 mm (3.0 in)
1941
101.1 mm (4.0 in)
1942
37.8 mm (1.5 in)
1943
160.8 mm (6.3 in)
1944
140.8 mm (5.5 in)
1945
112.3 mm (4.4 in)
1946
111.3 mm (4.4 in)
1947
50.1 mm (2.0 in)
1948
36.3 mm (1.4 in)
1949
46.5 mm (1.8 in)
1950
43.3 mm (1.7 in)
1951
92.2 mm (3.6 in)
1952
149.8 mm (5.9 in)
1953
20.9 mm (0.8 in)
1954
55.6 mm (2.2 in)
1955
23.0 mm (0.9 in)
1956
180.9 mm (7.1 in)
1957
52.1 mm (2.1 in)
1958
96.3 mm (3.8 in)
1959
33.7 mm (1.3 in)
1960
56.2 mm (2.2 in)
1961
43.4 mm (1.7 in)
1962
91.2 mm (3.6 in)
1963
59.9 mm (2.4 in)
1964
34.3 mm (1.4 in)
1965
72.1 mm (2.8 in)
1966
138.4 mm (5.4 in)
1967
65.8 mm (2.6 in)
1968
34.8 mm (1.4 in)
1969
163.8 mm (6.4 in)
1970
77.9 mm (3.1 in)
1971
70.4 mm (2.8 in)
1972
40.4 mm (1.6 in)
1973
58.5 mm (2.3 in)
1974
96.1 mm (3.8 in)
1975
49.5 mm (1.9 in)
1976
56.4 mm (2.2 in)
1977
79.7 mm (3.1 in)
1978
129.5 mm (5.1 in)
1979
65.0 mm (2.6 in)
1980
88.4 mm (3.5 in)
1981
57.7 mm (2.3 in)
1982
83.9 mm (3.3 in)
1983
143.8 mm (5.7 in)
1984
51.6 mm (2.0 in)
1985
47.5 mm (1.9 in)
1986
111.0 mm (4.4 in)
1987
43.7 mm (1.7 in)
1988
57.7 mm (2.3 in)
1989
17.8 mm (0.7 in)
1990
62.3 mm (2.5 in)
1991
108.0 mm (4.3 in)
1992
112.6 mm (4.4 in)
1993
167.4 mm (6.6 in)
1994
53.1 mm (2.1 in)
1995
120.2 mm (4.7 in)
1996
133.1 mm (5.2 in)
1997
155.2 mm (6.1 in)
1998
131.2 mm (5.2 in)
1999
42.6 mm (1.7 in)
2000
55.6 mm (2.2 in)
2001
87.6 mm (3.4 in)
2002
48.7 mm (1.9 in)
2003
79.8 mm (3.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Tustin Irvine Rch, 1902 to 2003. The record is 263 days in 1999, marked on the chart; the median year is 120 days.
Longest dry spell (CDD) at Tustin Irvine Rch by year
Year
Longest dry spell (CDD)
1902
152 days
1903
161 days
1904
28 days
1905
51 days
1906
56 days
1907
26 days
1908
35 days
1909
97 days
1910
181 days
1911
154 days
1912
146 days
1913
97 days
1914
120 days
1915
31 days
1916
20 days
1917
31 days
1918
72 days
1919
35 days
1920
79 days
1921
64 days
1922
29 days
1923
30 days
1924
37 days
1925
56 days
1926
124 days
1927
173 days
1928
89 days
1929
92 days
1930
107 days
1931
68 days
1932
155 days
1933
85 days
1934
72 days
1935
164 days
1936
101 days
1937
161 days
1938
147 days
1939
141 days
1940
142 days
1941
78 days
1942
75 days
1943
139 days
1944
190 days
1945
51 days
1946
142 days
1947
112 days
1948
70 days
1949
151 days
1950
180 days
1951
109 days
1952
146 days
1953
183 days
1954
196 days
1955
83 days
1956
146 days
1957
122 days
1958
92 days
1959
189 days
1960
158 days
1961
129 days
1962
153 days
1963
85 days
1964
86 days
1965
107 days
1966
153 days
1967
125 days
1968
161 days
1969
116 days
1970
239 days
1971
137 days
1972
151 days
1973
235 days
1974
154 days
1975
164 days
1976
89 days
1977
121 days
1978
127 days
1979
134 days
1980
156 days
1981
126 days
1982
32 days
1983
105 days
1984
91 days
1985
118 days
1986
106 days
1987
79 days
1988
122 days
1989
100 days
1990
163 days
1991
208 days
1992
102 days
1993
127 days
1994
55 days
1995
73 days
1996
194 days
1997
215 days
1998
110 days
1999
263 days
2000
120 days
2001
154 days
2002
158 days
2003
58 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
48 years with a frost
Across 48 years with a frost, the median last spring frost at Tustin Irvine Rch falls on 3 March and the median first autumn frost on 6 December, which leaves a median of 285 days between them.
Fitted over all years, the growing season changes by +6.7 days per decade at this station.
Frost dates and growing season at Tustin Irvine Rch
Measure
Median, all years
Earliest period
Recent period (1939 to 1992)
Recent against earliest
Fitted trend
Last spring frost
3 March
n/a
3 March
n/a
-3.4 days per decade
First autumn frost
6 December
n/a
9 December
n/a
+3.4 days per decade
Growing days
285 days
n/a
294 days
n/a
+6.7 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
82 years, 1902 to 2002
A day with at least 42.2 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 133.5 mm (5.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Tustin Irvine Rch: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
42.2 mm (1.7 in)
5 years
62.2 mm (2.4 in)
10 years
77.1 mm (3.0 in)
25 years
97.9 mm (3.9 in)
50 years
115.0 mm (4.5 in)
100 years
133.5 mm (5.3 in)
Longer than the 82 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, 82 years of values from 1902 to 2002.
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: 131.3 mm (5.2 in) in 1997; 114.8 mm (4.5 in) in 1956; 101.6 mm (4.0 in) in 1937.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Tustin Irvine Rch, at 1960 and 1996. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1960 ran 0.5 C (0.8 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1996 ran 1.0 C (1.7 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Tustin Irvine Rch, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1960
-0.5
-0.8
likely
5
1996
+1.0
+1.7
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Tustin Irvine Rch standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tustin Irvine Rch 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.