Record envelope, standing records and threshold days for Stockton 2 (USC00048557), California, United States, with 56 years of record.
Key Facts for Stockton 2
Stockton 2 (USC00048557) is a weather station in California, United States at 37.95 latitude and -121.27 longitude, 6 m (20 ft) above sea level.
The station reports from 1893 to 1948, 56 years of record.
1,464 records set at Stockton 2 still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Stockton 2 set a daily record low maximum temperature of 20.0 C (68.0 F) on 3 June 1948.
About the Station
Location: California, United States, 37.95 latitude, -121.27 longitude.
Elevation: 6 m (20 ft).
Period of record: 1893 to 1948, 56 years.
Eligible elements: tmax, tmin, prcp.
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 Stockton 2. 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 Stockton 2, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.6 C (69.1 F)
-7.8 C (18.0 F)
n/a
n/a
Feb
28.3 C (82.9 F)
-4.4 C (24.1 F)
n/a
n/a
Mar
30.6 C (87.1 F)
-2.8 C (27.0 F)
n/a
n/a
Apr
35.6 C (96.1 F)
-0.6 C (30.9 F)
n/a
n/a
May
38.9 C (102.0 F)
2.2 C (36.0 F)
n/a
n/a
Jun
42.2 C (108.0 F)
4.4 C (39.9 F)
n/a
n/a
Jul
43.3 C (109.9 F)
5.6 C (42.1 F)
n/a
n/a
Aug
40.6 C (105.1 F)
4.4 C (39.9 F)
n/a
n/a
Sep
40.0 C (104.0 F)
5.0 C (41.0 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-0.6 C (30.9 F)
n/a
n/a
Nov
30.6 C (87.1 F)
-3.9 C (25.0 F)
n/a
n/a
Dec
22.2 C (72.0 F)
-7.8 C (18.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Stockton 2 still stand. 1898 holds the most, with 71.
Standing records at Stockton 2 by the year they were set
Year set
Standing records
1893
24
1894
38
1895
32
1896
54
1897
38
1898
71
1899
50
1900
45
1901
53
1902
13
1903
31
1904
20
1905
33
1906
28
1907
15
1908
28
1909
21
1910
27
1911
20
1912
30
1913
46
1914
11
1915
5
1916
21
1917
22
1918
21
1919
21
1920
30
1921
24
1922
23
1923
16
1924
17
1925
23
1926
20
1927
22
1928
15
1929
38
1930
32
1931
42
1932
36
1933
23
1934
40
1935
30
1936
32
1937
26
1938
20
1939
8
1940
25
1941
14
1942
5
1943
5
1944
19
1945
11
1946
12
1947
25
1948
13
All-Time Record Progression
2 new records
2 all-time records were set at Stockton 2 between 11 December 1932 and 12 December 1932. Each dot is a new record.
When Stockton 2 set new all-time records
Date
Kind
Detail
1932-12-11
Record low minimum temperature
Record low minimum temperature -7.2 C (19.0 F)
1932-12-12
Record low minimum temperature
Record low minimum temperature -7.8 C (18.0 F)
Wettest Day of Each Month
Sep: 79.5 mm (3.1 in)
The wettest day on record for each calendar month at Stockton 2. The most was 79.5 mm (3.1 in) on 13 September 1918.
Record daily precipitation for each month at Stockton 2
Month
Record daily precipitation (mm)
Date
Jan
49.8 mm (2.0 in)
14 January 1908
Feb
66.8 mm (2.6 in)
20 February 1894
Mar
45.2 mm (1.8 in)
21 March 1937
Apr
41.4 mm (1.6 in)
29 April 1901
May
36.1 mm (1.4 in)
14 May 1894
Jun
13.7 mm (0.5 in)
2 June 1894
Jul
3.6 mm (0.14 in)
23 July 1913
Aug
4.8 mm (0.19 in)
30 August 1896
Sep
79.5 mm (3.1 in)
13 September 1918
Oct
46.5 mm (1.8 in)
8 October 1945
Nov
57.4 mm (2.3 in)
9 November 1924
Dec
67.3 mm (2.6 in)
11 December 1906
Period of Record Coverage
1893 to 1948
Complete yearUnder 90 percent of days
56 years of record at Stockton 2, 1893 to 1948. 4 years have data for under 90 percent of days and are left out of rankings: 1929, 1939, 1942, 1948.
Cooler than the station meanWarmer than the station mean
One stripe for each of 48 complete years at Stockton 2, 1893 to 1947. Blue stripes are years cooler than the station's own mean of 15.5 C (59.8 F); red stripes are warmer. The coolest year was 1911, at 14.3 C (57.7 F), and the warmest was 1934, at 17.4 C (63.2 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Stockton 2 as warming stripes, 1893 to 1947
Year
Annual mean temperature
Difference from the station mean
1893
14.8 C
-0.66 C
1894
15.1 C
-0.36 C
1895
15.1 C
-0.40 C
1896
15.4 C
-0.09 C
1897
14.8 C
-0.70 C
1898
14.6 C
-0.88 C
1899
14.9 C
-0.55 C
1900
15.6 C
+0.12 C
1901
14.3 C
-1.13 C
1902
14.4 C
-1.02 C
1903
14.5 C
-0.94 C
1904
14.9 C
-0.59 C
1905
14.5 C
-0.99 C
1906
15.0 C
-0.48 C
1907
15.1 C
-0.32 C
1908
14.8 C
-0.67 C
1909
15.1 C
-0.35 C
1910
14.9 C
-0.51 C
1911
14.3 C
-1.17 C
1912
14.8 C
-0.62 C
1913
15.6 C
+0.13 C
1914
15.5 C
+0.02 C
1915
15.8 C
+0.34 C
1916
15.0 C
-0.41 C
1917
15.5 C
+0.06 C
1918
15.3 C
-0.20 C
1919
14.8 C
-0.62 C
1920
15.2 C
-0.27 C
1921
15.7 C
+0.25 C
1922
15.1 C
-0.31 C
1923
15.4 C
-0.02 C
1924
15.6 C
+0.15 C
1925
15.7 C
+0.26 C
1926
16.7 C
+1.26 C
1927
15.5 C
+0.08 C
1931
17.1 C
+1.64 C
1932
16.2 C
+0.77 C
1933
15.9 C
+0.40 C
1934
17.4 C
+1.91 C
1935
16.0 C
+0.53 C
1936
16.7 C
+1.20 C
1937
15.9 C
+0.47 C
1940
17.1 C
+1.61 C
1941
16.4 C
+0.96 C
1944
15.9 C
+0.43 C
1945
16.1 C
+0.68 C
1946
15.5 C
+0.02 C
1947
16.5 C
+1.05 C
The annual mean temperature here has risen by 0.4 C (0.3 to 0.5) per decade over 1893 to 1947. In Fahrenheit: 0.6 F (0.5 to 0.8) per decade. The slope is a straight line fitted to 48 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Stockton 2
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.4 C (0.3 to 0.5) per decade
0.6 F (0.5 to 0.8) per decade
1893 to 1947
48
Rise
Mean daily maximum
0.5 C (0.4 to 0.7) per decade
1.0 F (0.7 to 1.2) per decade
1893 to 1947
48
Rise
Mean daily minimum
0.2 C (0.1 to 0.3) per decade
0.3 F (0.1 to 0.5) per decade
1893 to 1947
48
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
1893 to 1948
Yearly extremes at Stockton 2: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
1905
39.4 C (102.9 F)
56
Coldest night (TNn)
-7.8 C (18.0 F)
1932
-3.3 C (26.1 F)
56
Wettest day (Rx1day)
79.5 mm (3.1 in)
1918
31.6 mm (1.2 in)
56
Wettest five days (Rx5day)
137.2 mm (5.4 in)
1906
62.5 mm (2.5 in)
56
Longest dry spell (CDD)
175 days
1943
94 days
56
Hottest day (TXx)
The hottest day of the year at Stockton 2, 1893 to 1948. The record is 43.3 C (109.9 F) in 1905, marked on the chart; the median year is 39.4 C (102.9 F).
Hottest day (TXx) at Stockton 2 by year
Year
Hottest day (TXx)
1893
37.8 C (100.0 F)
1894
39.4 C (102.9 F)
1895
38.9 C (102.0 F)
1896
37.8 C (100.0 F)
1897
38.9 C (102.0 F)
1898
40.6 C (105.1 F)
1899
38.9 C (102.0 F)
1900
38.3 C (100.9 F)
1901
38.9 C (102.0 F)
1902
39.4 C (102.9 F)
1903
39.4 C (102.9 F)
1904
40.0 C (104.0 F)
1905
43.3 C (109.9 F)
1906
40.0 C (104.0 F)
1907
34.4 C (93.9 F)
1908
39.4 C (102.9 F)
1909
38.9 C (102.0 F)
1910
38.9 C (102.0 F)
1911
36.7 C (98.1 F)
1912
40.6 C (105.1 F)
1913
42.2 C (108.0 F)
1914
38.9 C (102.0 F)
1915
37.8 C (100.0 F)
1916
38.9 C (102.0 F)
1917
40.6 C (105.1 F)
1918
39.4 C (102.9 F)
1919
38.9 C (102.0 F)
1920
42.2 C (108.0 F)
1921
41.7 C (107.1 F)
1922
41.1 C (106.0 F)
1923
40.6 C (105.1 F)
1924
38.9 C (102.0 F)
1925
41.1 C (106.0 F)
1926
40.6 C (105.1 F)
1927
39.4 C (102.9 F)
1928
39.4 C (102.9 F)
1929
42.2 C (108.0 F)
1930
37.8 C (100.0 F)
1931
41.1 C (106.0 F)
1932
39.4 C (102.9 F)
1933
41.1 C (106.0 F)
1934
39.4 C (102.9 F)
1935
40.6 C (105.1 F)
1936
41.1 C (106.0 F)
1937
40.0 C (104.0 F)
1938
38.9 C (102.0 F)
1939
39.4 C (102.9 F)
1940
39.4 C (102.9 F)
1941
37.8 C (100.0 F)
1942
39.4 C (102.9 F)
1943
37.2 C (99.0 F)
1944
38.9 C (102.0 F)
1945
38.3 C (100.9 F)
1946
38.9 C (102.0 F)
1947
38.9 C (102.0 F)
1948
33.3 C (91.9 F)
Coldest night (TNn)
The coldest night of the year at Stockton 2, 1893 to 1948. The record is -7.8 C (18.0 F) in 1932, marked on the chart; the median year is -3.3 C (26.1 F).
Coldest night (TNn) at Stockton 2 by year
Year
Coldest night (TNn)
1893
-1.1 C (30.0 F)
1894
-3.3 C (26.1 F)
1895
-3.9 C (25.0 F)
1896
-3.3 C (26.1 F)
1897
-4.4 C (24.1 F)
1898
-5.0 C (23.0 F)
1899
-4.4 C (24.1 F)
1900
-5.0 C (23.0 F)
1901
-5.6 C (21.9 F)
1902
-3.9 C (25.0 F)
1903
-4.4 C (24.1 F)
1904
-2.8 C (27.0 F)
1905
-3.9 C (25.0 F)
1906
-3.9 C (25.0 F)
1907
-1.1 C (30.0 F)
1908
-3.3 C (26.1 F)
1909
-3.3 C (26.1 F)
1910
-3.9 C (25.0 F)
1911
-3.9 C (25.0 F)
1912
-6.7 C (19.9 F)
1913
-6.1 C (21.0 F)
1914
-1.1 C (30.0 F)
1915
-4.4 C (24.1 F)
1916
-3.9 C (25.0 F)
1917
-5.6 C (21.9 F)
1918
-3.3 C (26.1 F)
1919
-4.4 C (24.1 F)
1920
-3.3 C (26.1 F)
1921
-3.3 C (26.1 F)
1922
-5.0 C (23.0 F)
1923
-2.2 C (28.0 F)
1924
-3.9 C (25.0 F)
1925
-2.2 C (28.0 F)
1926
-2.2 C (28.0 F)
1927
-2.8 C (27.0 F)
1928
-3.3 C (26.1 F)
1929
-3.3 C (26.1 F)
1930
-6.7 C (19.9 F)
1931
-3.3 C (26.1 F)
1932
-7.8 C (18.0 F)
1933
-1.1 C (30.0 F)
1934
-1.7 C (28.9 F)
1935
-3.3 C (26.1 F)
1936
-3.9 C (25.0 F)
1937
-7.8 C (18.0 F)
1938
-1.1 C (30.0 F)
1939
-2.2 C (28.0 F)
1940
-5.0 C (23.0 F)
1941
-1.1 C (30.0 F)
1942
-3.9 C (25.0 F)
1943
-4.4 C (24.1 F)
1944
-1.1 C (30.0 F)
1945
-2.2 C (28.0 F)
1946
-2.2 C (28.0 F)
1947
-2.8 C (27.0 F)
1948
-2.8 C (27.0 F)
Wettest day (Rx1day)
The wettest day of the year at Stockton 2, 1893 to 1948. The record is 79.5 mm (3.1 in) in 1918, marked on the chart; the median year is 31.6 mm (1.2 in).
Wettest day (Rx1day) at Stockton 2 by year
Year
Wettest day (Rx1day)
1893
33.3 mm (1.3 in)
1894
66.8 mm (2.6 in)
1895
41.7 mm (1.6 in)
1896
39.6 mm (1.6 in)
1897
26.7 mm (1.1 in)
1898
22.4 mm (0.9 in)
1899
38.6 mm (1.5 in)
1900
42.9 mm (1.7 in)
1901
41.4 mm (1.6 in)
1902
26.7 mm (1.1 in)
1903
30.2 mm (1.2 in)
1904
28.7 mm (1.1 in)
1905
29.7 mm (1.2 in)
1906
67.3 mm (2.6 in)
1907
40.6 mm (1.6 in)
1908
49.8 mm (2.0 in)
1909
45.0 mm (1.8 in)
1910
18.3 mm (0.7 in)
1911
43.7 mm (1.7 in)
1912
23.6 mm (0.9 in)
1913
31.2 mm (1.2 in)
1914
35.1 mm (1.4 in)
1915
30.5 mm (1.2 in)
1916
44.5 mm (1.8 in)
1917
26.9 mm (1.1 in)
1918
79.5 mm (3.1 in)
1919
26.2 mm (1.0 in)
1920
26.4 mm (1.0 in)
1921
48.0 mm (1.9 in)
1922
39.6 mm (1.6 in)
1923
20.8 mm (0.8 in)
1924
57.4 mm (2.3 in)
1925
35.1 mm (1.4 in)
1926
32.0 mm (1.3 in)
1927
37.1 mm (1.5 in)
1928
30.0 mm (1.2 in)
1929
18.0 mm (0.7 in)
1930
30.0 mm (1.2 in)
1931
26.9 mm (1.1 in)
1932
24.9 mm (1.0 in)
1933
24.1 mm (0.9 in)
1934
28.7 mm (1.1 in)
1935
33.5 mm (1.3 in)
1936
30.7 mm (1.2 in)
1937
45.2 mm (1.8 in)
1938
29.2 mm (1.1 in)
1939
30.5 mm (1.2 in)
1940
39.9 mm (1.6 in)
1941
24.9 mm (1.0 in)
1942
41.9 mm (1.6 in)
1943
30.5 mm (1.2 in)
1944
44.5 mm (1.8 in)
1945
46.5 mm (1.8 in)
1946
43.7 mm (1.7 in)
1947
26.4 mm (1.0 in)
1948
27.4 mm (1.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Stockton 2, 1893 to 1948. The record is 137.2 mm (5.4 in) in 1906, marked on the chart; the median year is 62.5 mm (2.5 in).
Wettest five days (Rx5day) at Stockton 2 by year
Year
Wettest five days (Rx5day)
1893
14.2 mm (0.6 in)
1894
78.6 mm (3.1 in)
1895
71.5 mm (2.8 in)
1896
83.6 mm (3.3 in)
1897
52.3 mm (2.1 in)
1898
26.0 mm (1.0 in)
1899
95.8 mm (3.8 in)
1900
89.4 mm (3.5 in)
1901
63.2 mm (2.5 in)
1902
73.8 mm (2.9 in)
1903
82.3 mm (3.2 in)
1904
57.6 mm (2.3 in)
1905
38.0 mm (1.5 in)
1906
137.2 mm (5.4 in)
1907
81.0 mm (3.2 in)
1908
52.8 mm (2.1 in)
1909
66.6 mm (2.6 in)
1910
56.9 mm (2.2 in)
1911
108.0 mm (4.3 in)
1912
35.3 mm (1.4 in)
1913
55.4 mm (2.2 in)
1914
74.4 mm (2.9 in)
1915
54.7 mm (2.2 in)
1916
63.0 mm (2.5 in)
1917
55.1 mm (2.2 in)
1918
88.6 mm (3.5 in)
1919
53.0 mm (2.1 in)
1920
50.1 mm (2.0 in)
1921
66.6 mm (2.6 in)
1922
89.1 mm (3.5 in)
1923
52.0 mm (2.0 in)
1924
60.2 mm (2.4 in)
1925
60.3 mm (2.4 in)
1926
96.1 mm (3.8 in)
1927
55.3 mm (2.2 in)
1928
69.9 mm (2.8 in)
1929
30.1 mm (1.2 in)
1930
49.8 mm (2.0 in)
1931
83.5 mm (3.3 in)
1932
61.4 mm (2.4 in)
1933
59.1 mm (2.3 in)
1934
63.0 mm (2.5 in)
1935
43.7 mm (1.7 in)
1936
70.9 mm (2.8 in)
1937
92.1 mm (3.6 in)
1938
67.3 mm (2.6 in)
1939
34.8 mm (1.4 in)
1940
107.2 mm (4.2 in)
1941
48.8 mm (1.9 in)
1942
102.1 mm (4.0 in)
1943
96.3 mm (3.8 in)
1944
62.0 mm (2.4 in)
1945
79.2 mm (3.1 in)
1946
61.9 mm (2.4 in)
1947
28.8 mm (1.1 in)
1948
37.4 mm (1.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Stockton 2, 1893 to 1948. The record is 175 days in 1943, marked on the chart; the median year is 94 days.
Longest dry spell (CDD) at Stockton 2 by year
Year
Longest dry spell (CDD)
1893
141 days
1894
56 days
1895
105 days
1896
60 days
1897
148 days
1898
56 days
1899
68 days
1900
124 days
1901
117 days
1902
142 days
1903
141 days
1904
113 days
1905
124 days
1906
39 days
1907
132 days
1908
109 days
1909
93 days
1910
94 days
1911
143 days
1912
71 days
1913
61 days
1914
114 days
1915
39 days
1916
83 days
1917
43 days
1918
22 days
1919
33 days
1920
23 days
1921
25 days
1922
24 days
1923
46 days
1924
35 days
1925
56 days
1926
61 days
1927
87 days
1928
124 days
1929
62 days
1930
114 days
1931
77 days
1932
89 days
1933
123 days
1934
111 days
1935
154 days
1936
87 days
1937
108 days
1938
148 days
1939
123 days
1940
145 days
1941
160 days
1942
30 days
1943
175 days
1944
141 days
1945
140 days
1946
68 days
1947
122 days
1948
30 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
44 years with a frost
Across 44 years with a frost, the median last spring frost at Stockton 2 falls on 10 February and the median first autumn frost on 29 November, which leaves a median of 294 days between them.
Fitted over all years, the growing season changes by +4.2 days per decade at this station.
Frost dates and growing season at Stockton 2
Measure
Median, all years
Earliest period
Recent period (1908 to 1947)
Recent against earliest
Fitted trend
Last spring frost
10 February
n/a
10 February
n/a
-3.6 days per decade
First autumn frost
29 November
n/a
29 November
n/a
+0.5 days per decade
Growing days
294 days
n/a
294 days
n/a
+4.2 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
39 years, 1895 to 1947
A day with at least 33.8 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 63.4 mm (2.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Stockton 2: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
33.8 mm (1.3 in)
5 years
42.4 mm (1.7 in)
10 years
47.8 mm (1.9 in)
25 years
54.3 mm (2.1 in)
50 years
58.9 mm (2.3 in)
Longer than the 39 years of record
100 years
63.4 mm (2.5 in)
Longer than the 39 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, 39 years of values from 1895 to 1947.
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: 67.3 mm (2.6 in) in 1906; 49.8 mm (2.0 in) in 1908; 46.5 mm (1.8 in) in 1945.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Stockton 2, at 1909. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1909 ran 0.5 C (0.8 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Stockton 2, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1909
+0.5
+0.8
possible
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 Stockton 2 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Stockton 2 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.