Record envelope, standing records and threshold days for San Fernando (USC00047759), California, United States, with 69 years of record.
Key Facts for San Fernando
San Fernando (USC00047759) is a weather station in California, United States at 34.28 latitude and -118.47 longitude, 296 m (971 ft) above sea level.
The station reports from 1906 to 1974, 69 years of record.
1,464 records set at San Fernando still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
San Fernando set a daily record precipitation of 78.7 mm (3.1 in) on 7 January 1974.
About the Station
Location: California, United States, 34.28 latitude, -118.47 longitude.
Elevation: 296 m (971 ft).
Period of record: 1906 to 1974, 69 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 San Fernando. 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 Fernando, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
31.1 C (88.0 F)
-5.0 C (23.0 F)
n/a
n/a
Feb
33.3 C (91.9 F)
-3.3 C (26.1 F)
n/a
n/a
Mar
36.1 C (97.0 F)
-2.2 C (28.0 F)
n/a
n/a
Apr
39.4 C (102.9 F)
-1.1 C (30.0 F)
n/a
n/a
May
40.6 C (105.1 F)
0.0 C (32.0 F)
n/a
n/a
Jun
45.6 C (114.1 F)
2.2 C (36.0 F)
n/a
n/a
Jul
45.0 C (113.0 F)
4.4 C (39.9 F)
n/a
n/a
Aug
44.4 C (111.9 F)
5.0 C (41.0 F)
n/a
n/a
Sep
45.6 C (114.1 F)
3.9 C (39.0 F)
n/a
n/a
Oct
41.1 C (106.0 F)
-0.6 C (30.9 F)
n/a
n/a
Nov
36.1 C (97.0 F)
-2.2 C (28.0 F)
n/a
n/a
Dec
32.2 C (90.0 F)
-3.3 C (26.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at San Fernando still stand. 1933 holds the most, with 69.
Standing records at San Fernando by the year they were set
Year set
Standing records
1918
26
1919
62
1920
34
1921
34
1922
20
1923
25
1924
21
1925
22
1926
13
1927
25
1928
19
1929
48
1930
43
1931
36
1932
41
1933
69
1934
24
1935
32
1936
33
1937
26
1938
26
1939
19
1940
19
1941
52
1942
17
1943
21
1944
19
1945
17
1946
15
1947
25
1948
36
1949
45
1950
25
1951
24
1952
19
1953
20
1954
19
1955
22
1956
21
1957
23
1958
25
1959
18
1960
15
1961
26
1962
17
1963
17
1964
12
1965
33
1966
13
1967
23
1968
22
1969
18
1970
17
1971
28
1972
25
1973
15
1974
3
All-Time Record Progression
5 new records
5 all-time records were set at San Fernando between 11 January 1949 and 28 September 1963. Each dot is a new record.
When San Fernando set new all-time records
Date
Kind
Detail
1949-01-11
Record low maximum temperature
Record low maximum temperature 3.9 C (39.0 F)
1955-09-01
Record high minimum temperature
Record high minimum temperature 25.6 C (78.1 F)
1957-07-04
Record high minimum temperature
Record high minimum temperature 26.7 C (80.1 F)
1961-06-15
Record high maximum temperature
Record high maximum temperature 45.6 C (114.1 F)
1963-09-28
Record high minimum temperature
Record high minimum temperature 27.8 C (82.0 F)
Wettest Day of Each Month
Jan: 191.8 mm (7.6 in)
The wettest day on record for each calendar month at San Fernando. The most was 191.8 mm (7.6 in) on 1 January 1934.
Record daily precipitation for each month at San Fernando
Month
Record daily precipitation (mm)
Date
Jan
191.8 mm (7.6 in)
1 January 1934
Feb
113.0 mm (4.4 in)
20 February 1944
Mar
124.5 mm (4.9 in)
10 March 1912
Apr
74.9 mm (2.9 in)
12 April 1956
May
63.8 mm (2.5 in)
21 May 1921
Jun
14.0 mm (0.6 in)
27 June 1913
Jul
15.0 mm (0.6 in)
1 July 1918
Aug
13.0 mm (0.5 in)
10 August 1942
Sep
23.4 mm (0.9 in)
24 September 1908
Oct
38.6 mm (1.5 in)
28 October 1942
Nov
94.0 mm (3.7 in)
7 November 1966
Dec
109.5 mm (4.3 in)
15 December 1938
Period of Record Coverage
1918 to 1974
Complete yearUnder 90 percent of days
57 years of record at San Fernando, 1918 to 1974. 3 years have data for under 90 percent of days and are left out of rankings: 1918, 1963, 1974.
Cooler than the station meanWarmer than the station mean
One stripe for each of 49 complete years at San Fernando, 1919 to 1973. Blue stripes are years cooler than the station's own mean of 17.5 C (63.5 F); red stripes are warmer. The coolest year was 1919, at 15.5 C (59.9 F), and the warmest was 1959, at 18.9 C (66.1 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at San Fernando as warming stripes, 1919 to 1973
Year
Annual mean temperature
Difference from the station mean
1919
15.5 C
-1.98 C
1921
16.7 C
-0.82 C
1922
16.7 C
-0.76 C
1923
16.7 C
-0.78 C
1924
16.9 C
-0.55 C
1925
16.9 C
-0.56 C
1926
17.6 C
+0.15 C
1927
16.6 C
-0.86 C
1928
17.8 C
+0.35 C
1929
18.4 C
+0.94 C
1930
17.7 C
+0.24 C
1931
18.3 C
+0.81 C
1932
17.3 C
-0.18 C
1933
17.1 C
-0.38 C
1934
18.5 C
+1.00 C
1935
17.0 C
-0.51 C
1936
18.2 C
+0.66 C
1937
17.2 C
-0.29 C
1938
17.7 C
+0.24 C
1940
18.1 C
+0.58 C
1941
16.9 C
-0.64 C
1942
16.9 C
-0.58 C
1944
16.3 C
-1.17 C
1945
17.0 C
-0.46 C
1946
17.1 C
-0.38 C
1947
17.4 C
-0.07 C
1948
16.4 C
-1.09 C
1949
16.3 C
-1.21 C
1950
17.1 C
-0.40 C
1952
16.5 C
-0.98 C
1953
17.4 C
-0.08 C
1954
17.8 C
+0.34 C
1955
16.8 C
-0.68 C
1956
17.7 C
+0.20 C
1957
17.9 C
+0.39 C
1958
18.8 C
+1.28 C
1959
18.9 C
+1.43 C
1960
18.1 C
+0.61 C
1961
18.5 C
+1.05 C
1962
17.8 C
+0.35 C
1964
17.7 C
+0.16 C
1965
17.8 C
+0.28 C
1966
18.3 C
+0.85 C
1967
18.4 C
+0.95 C
1968
18.6 C
+1.15 C
1969
18.1 C
+0.56 C
1970
18.1 C
+0.62 C
1972
18.0 C
+0.48 C
1973
17.2 C
-0.25 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1919 to 1973. In Fahrenheit: 0.4 F (0.2 to 0.6) per decade. The slope is a straight line fitted to 49 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at San Fernando
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.3) per decade
0.4 F (0.2 to 0.6) per decade
1919 to 1973
49
Rise
Mean daily maximum
0.1 C (-0.1 to 0.3) per decade
0.2 F (-0.1 to 0.5) per decade
1919 to 1973
49
Not clearly different from zero
Mean daily minimum
0.3 C (0.2 to 0.5) per decade
0.6 F (0.3 to 0.9) per decade
1919 to 1973
49
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
1906 to 1974
Yearly extremes at San Fernando: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
45.6 C (114.1 F)
1961
41.7 C (107.1 F)
57
Coldest night (TNn)
-5.0 C (23.0 F)
1919
-1.7 C (28.9 F)
57
Wettest day (Rx1day)
191.8 mm (7.6 in)
1934
56.6 mm (2.2 in)
69
Wettest five days (Rx5day)
259.3 mm (10.2 in)
1944
94.0 mm (3.7 in)
69
Longest dry spell (CDD)
245 days
1970
115 days
69
Hottest day (TXx)
The hottest day of the year at San Fernando, 1906 to 1974. The record is 45.6 C (114.1 F) in 1961, marked on the chart; the median year is 41.7 C (107.1 F).
Hottest day (TXx) at San Fernando by year
Year
Hottest day (TXx)
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
n/a
1916
n/a
1917
n/a
1918
42.2 C (108.0 F)
1919
38.9 C (102.0 F)
1920
40.6 C (105.1 F)
1921
40.0 C (104.0 F)
1922
41.1 C (106.0 F)
1923
40.6 C (105.1 F)
1924
38.9 C (102.0 F)
1925
42.2 C (108.0 F)
1926
40.0 C (104.0 F)
1927
42.2 C (108.0 F)
1928
40.0 C (104.0 F)
1929
43.9 C (111.0 F)
1930
42.8 C (109.0 F)
1931
43.9 C (111.0 F)
1932
44.4 C (111.9 F)
1933
45.0 C (113.0 F)
1934
45.0 C (113.0 F)
1935
41.7 C (107.1 F)
1936
43.9 C (111.0 F)
1937
43.3 C (109.9 F)
1938
42.8 C (109.0 F)
1939
41.7 C (107.1 F)
1940
40.6 C (105.1 F)
1941
40.0 C (104.0 F)
1942
40.6 C (105.1 F)
1943
43.3 C (109.9 F)
1944
41.7 C (107.1 F)
1945
39.4 C (102.9 F)
1946
40.6 C (105.1 F)
1947
41.7 C (107.1 F)
1948
43.9 C (111.0 F)
1949
41.7 C (107.1 F)
1950
41.1 C (106.0 F)
1951
41.1 C (106.0 F)
1952
41.1 C (106.0 F)
1953
41.7 C (107.1 F)
1954
42.2 C (108.0 F)
1955
44.4 C (111.9 F)
1956
43.9 C (111.0 F)
1957
41.7 C (107.1 F)
1958
40.6 C (105.1 F)
1959
41.7 C (107.1 F)
1960
45.0 C (113.0 F)
1961
45.6 C (114.1 F)
1962
40.6 C (105.1 F)
1963
44.4 C (111.9 F)
1964
40.0 C (104.0 F)
1965
40.6 C (105.1 F)
1966
40.0 C (104.0 F)
1967
43.3 C (109.9 F)
1968
40.6 C (105.1 F)
1969
42.2 C (108.0 F)
1970
42.2 C (108.0 F)
1971
45.6 C (114.1 F)
1972
43.3 C (109.9 F)
1973
42.8 C (109.0 F)
1974
28.3 C (82.9 F)
Coldest night (TNn)
The coldest night of the year at San Fernando, 1906 to 1974. The record is -5.0 C (23.0 F) in 1919, marked on the chart; the median year is -1.7 C (28.9 F).
Coldest night (TNn) at San Fernando by year
Year
Coldest night (TNn)
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
n/a
1916
n/a
1917
n/a
1918
-2.2 C (28.0 F)
1919
-5.0 C (23.0 F)
1920
-0.6 C (30.9 F)
1921
-3.9 C (25.0 F)
1922
-3.9 C (25.0 F)
1923
-1.7 C (28.9 F)
1924
-1.7 C (28.9 F)
1925
0.6 C (33.1 F)
1926
-1.7 C (28.9 F)
1927
1.1 C (34.0 F)
1928
-2.2 C (28.0 F)
1929
-3.3 C (26.1 F)
1930
-1.7 C (28.9 F)
1931
-1.7 C (28.9 F)
1932
-2.2 C (28.0 F)
1933
-2.2 C (28.0 F)
1934
0.0 C (32.0 F)
1935
-1.1 C (30.0 F)
1936
-1.7 C (28.9 F)
1937
-2.8 C (27.0 F)
1938
-1.1 C (30.0 F)
1939
-1.1 C (30.0 F)
1940
-0.6 C (30.9 F)
1941
-1.1 C (30.0 F)
1942
-2.2 C (28.0 F)
1943
-1.7 C (28.9 F)
1944
-1.7 C (28.9 F)
1945
-1.1 C (30.0 F)
1946
-1.7 C (28.9 F)
1947
-2.2 C (28.0 F)
1948
-3.3 C (26.1 F)
1949
-3.3 C (26.1 F)
1950
-3.3 C (26.1 F)
1951
-3.3 C (26.1 F)
1952
-2.2 C (28.0 F)
1953
-1.7 C (28.9 F)
1954
-1.7 C (28.9 F)
1955
-2.2 C (28.0 F)
1956
-0.6 C (30.9 F)
1957
-1.1 C (30.0 F)
1958
0.6 C (33.1 F)
1959
0.0 C (32.0 F)
1960
-1.1 C (30.0 F)
1961
-1.1 C (30.0 F)
1962
-0.6 C (30.9 F)
1963
-0.6 C (30.9 F)
1964
-0.6 C (30.9 F)
1965
1.1 C (34.0 F)
1966
-0.6 C (30.9 F)
1967
-1.1 C (30.0 F)
1968
-3.3 C (26.1 F)
1969
-0.6 C (30.9 F)
1970
-2.8 C (27.0 F)
1971
-1.7 C (28.9 F)
1972
-2.2 C (28.0 F)
1973
-2.2 C (28.0 F)
1974
1.7 C (35.1 F)
Wettest day (Rx1day)
The wettest day of the year at San Fernando, 1906 to 1974. The record is 191.8 mm (7.6 in) in 1934, marked on the chart; the median year is 56.6 mm (2.2 in).
Wettest day (Rx1day) at San Fernando by year
Year
Wettest day (Rx1day)
1906
63.5 mm (2.5 in)
1907
36.6 mm (1.4 in)
1908
36.8 mm (1.4 in)
1909
49.0 mm (1.9 in)
1910
50.8 mm (2.0 in)
1911
63.5 mm (2.5 in)
1912
124.5 mm (4.9 in)
1913
94.7 mm (3.7 in)
1914
78.7 mm (3.1 in)
1915
46.2 mm (1.8 in)
1916
100.8 mm (4.0 in)
1917
39.4 mm (1.6 in)
1918
56.6 mm (2.2 in)
1919
33.5 mm (1.3 in)
1920
62.2 mm (2.4 in)
1921
83.3 mm (3.3 in)
1922
47.2 mm (1.9 in)
1923
22.4 mm (0.9 in)
1924
30.2 mm (1.2 in)
1925
32.5 mm (1.3 in)
1926
74.2 mm (2.9 in)
1927
88.6 mm (3.5 in)
1928
69.6 mm (2.7 in)
1929
37.3 mm (1.5 in)
1930
69.1 mm (2.7 in)
1931
65.5 mm (2.6 in)
1932
77.7 mm (3.1 in)
1933
61.0 mm (2.4 in)
1934
191.8 mm (7.6 in)
1935
41.4 mm (1.6 in)
1936
44.2 mm (1.7 in)
1937
57.4 mm (2.3 in)
1938
109.5 mm (4.3 in)
1939
39.6 mm (1.6 in)
1940
72.4 mm (2.9 in)
1941
70.6 mm (2.8 in)
1942
38.6 mm (1.5 in)
1943
156.2 mm (6.1 in)
1944
113.0 mm (4.4 in)
1945
81.3 mm (3.2 in)
1946
70.1 mm (2.8 in)
1947
31.2 mm (1.2 in)
1948
40.9 mm (1.6 in)
1949
45.7 mm (1.8 in)
1950
37.1 mm (1.5 in)
1951
50.3 mm (2.0 in)
1952
114.3 mm (4.5 in)
1953
16.8 mm (0.7 in)
1954
50.8 mm (2.0 in)
1955
42.7 mm (1.7 in)
1956
124.0 mm (4.9 in)
1957
61.0 mm (2.4 in)
1958
56.1 mm (2.2 in)
1959
77.7 mm (3.1 in)
1960
26.7 mm (1.1 in)
1961
28.2 mm (1.1 in)
1962
85.6 mm (3.4 in)
1963
41.4 mm (1.6 in)
1964
42.4 mm (1.7 in)
1965
73.2 mm (2.9 in)
1966
94.0 mm (3.7 in)
1967
56.6 mm (2.2 in)
1968
53.3 mm (2.1 in)
1969
76.2 mm (3.0 in)
1970
36.1 mm (1.4 in)
1971
52.8 mm (2.1 in)
1972
29.0 mm (1.1 in)
1973
33.0 mm (1.3 in)
1974
78.7 mm (3.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at San Fernando, 1906 to 1974. The record is 259.3 mm (10.2 in) in 1944, marked on the chart; the median year is 94.0 mm (3.7 in).
Wettest five days (Rx5day) at San Fernando by year
Year
Wettest five days (Rx5day)
1906
106.4 mm (4.2 in)
1907
122.9 mm (4.8 in)
1908
89.4 mm (3.5 in)
1909
77.0 mm (3.0 in)
1910
97.1 mm (3.8 in)
1911
94.0 mm (3.7 in)
1912
155.0 mm (6.1 in)
1913
153.0 mm (6.0 in)
1914
225.5 mm (8.9 in)
1915
72.6 mm (2.9 in)
1916
194.8 mm (7.7 in)
1917
83.4 mm (3.3 in)
1918
123.0 mm (4.8 in)
1919
37.8 mm (1.5 in)
1920
91.1 mm (3.6 in)
1921
184.9 mm (7.3 in)
1922
84.7 mm (3.3 in)
1923
30.7 mm (1.2 in)
1924
30.2 mm (1.2 in)
1925
52.6 mm (2.1 in)
1926
187.1 mm (7.4 in)
1927
180.3 mm (7.1 in)
1928
89.6 mm (3.5 in)
1929
54.8 mm (2.2 in)
1930
93.0 mm (3.7 in)
1931
124.7 mm (4.9 in)
1932
113.7 mm (4.5 in)
1933
157.3 mm (6.2 in)
1934
208.6 mm (8.2 in)
1935
43.7 mm (1.7 in)
1936
136.2 mm (5.4 in)
1937
85.1 mm (3.4 in)
1938
226.1 mm (8.9 in)
1939
55.3 mm (2.2 in)
1940
132.4 mm (5.2 in)
1941
156.0 mm (6.1 in)
1942
51.1 mm (2.0 in)
1943
251.0 mm (9.9 in)
1944
259.3 mm (10.2 in)
1945
137.2 mm (5.4 in)
1946
140.5 mm (5.5 in)
1947
40.3 mm (1.6 in)
1948
40.9 mm (1.6 in)
1949
49.8 mm (2.0 in)
1950
53.3 mm (2.1 in)
1951
78.0 mm (3.1 in)
1952
198.6 mm (7.8 in)
1953
25.7 mm (1.0 in)
1954
75.0 mm (3.0 in)
1955
58.7 mm (2.3 in)
1956
170.7 mm (6.7 in)
1957
66.3 mm (2.6 in)
1958
97.3 mm (3.8 in)
1959
77.7 mm (3.1 in)
1960
52.3 mm (2.1 in)
1961
43.0 mm (1.7 in)
1962
240.1 mm (9.5 in)
1963
72.5 mm (2.9 in)
1964
69.9 mm (2.8 in)
1965
166.9 mm (6.6 in)
1966
123.5 mm (4.9 in)
1967
140.0 mm (5.5 in)
1968
58.4 mm (2.3 in)
1969
206.0 mm (8.1 in)
1970
91.2 mm (3.6 in)
1971
155.3 mm (6.1 in)
1972
42.7 mm (1.7 in)
1973
101.9 mm (4.0 in)
1974
181.6 mm (7.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at San Fernando, 1906 to 1974. The record is 245 days in 1970, marked on the chart; the median year is 115 days.
Longest dry spell (CDD) at San Fernando by year
Year
Longest dry spell (CDD)
1906
17 days
1907
17 days
1908
15 days
1909
20 days
1910
17 days
1911
20 days
1912
17 days
1913
24 days
1914
38 days
1915
26 days
1916
23 days
1917
22 days
1918
28 days
1919
25 days
1920
48 days
1921
124 days
1922
170 days
1923
146 days
1924
166 days
1925
122 days
1926
152 days
1927
198 days
1928
153 days
1929
103 days
1930
138 days
1931
67 days
1932
119 days
1933
76 days
1934
108 days
1935
62 days
1936
97 days
1937
106 days
1938
89 days
1939
110 days
1940
159 days
1941
163 days
1942
103 days
1943
91 days
1944
142 days
1945
68 days
1946
127 days
1947
69 days
1948
138 days
1949
172 days
1950
137 days
1951
121 days
1952
143 days
1953
170 days
1954
197 days
1955
190 days
1956
147 days
1957
87 days
1958
118 days
1959
157 days
1960
135 days
1961
63 days
1962
122 days
1963
83 days
1964
140 days
1965
118 days
1966
70 days
1967
92 days
1968
126 days
1969
117 days
1970
245 days
1971
148 days
1972
115 days
1973
199 days
1974
37 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 San Fernando falls on 5 March and the median first autumn frost on 6 December, which leaves a median of 272 days between them.
Fitted over all years, the growing season changes by -0.7 days per decade at this station.
Frost dates and growing season at San Fernando
Measure
Median, all years
Earliest period
Recent period (1919 to 1972)
Recent against earliest
Fitted trend
Last spring frost
5 March
n/a
5 March
n/a
+2.3 days per decade
First autumn frost
6 December
n/a
6 December
n/a
+1.6 days per decade
Growing days
272 days
n/a
272 days
n/a
-0.7 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
53 years, 1921 to 1973
A day with at least 54.8 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 187.2 mm (7.4 in) of rain is expected about once in 100 years.
Rainfall return levels at San Fernando: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
54.8 mm (2.2 in)
5 years
83.1 mm (3.3 in)
10 years
104.4 mm (4.1 in)
25 years
134.6 mm (5.3 in)
50 years
159.7 mm (6.3 in)
100 years
187.2 mm (7.4 in)
Longer than the 53 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, 53 years of values from 1921 to 1973.
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: 191.8 mm (7.6 in) in 1934; 156.2 mm (6.1 in) in 1943; 124.0 mm (4.9 in) in 1956.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for San Fernando standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Fernando 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.