Record envelope, standing records and threshold days for Cloverdale (USC00041837), California, United States, with 63 years of record.
Key Facts for Cloverdale
Cloverdale (USC00041837) is a weather station in California, United States at 38.82 latitude and -123.02 longitude, 104 m (341 ft) above sea level.
The station reports from 1893 to 1955, 63 years of record.
1,464 records set at Cloverdale still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Cloverdale tied a daily record low maximum temperature of 16.1 C (61.0 F) on 19 October 1955.
About the Station
Location: California, United States, 38.82 latitude, -123.02 longitude.
Elevation: 104 m (341 ft).
Period of record: 1893 to 1955, 63 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 Cloverdale. 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 Cloverdale, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
27.2 C (81.0 F)
-8.3 C (17.1 F)
n/a
n/a
Feb
30.0 C (86.0 F)
-5.0 C (23.0 F)
n/a
n/a
Mar
35.0 C (95.0 F)
-4.4 C (24.1 F)
n/a
n/a
Apr
35.6 C (96.1 F)
-1.7 C (28.9 F)
n/a
n/a
May
41.7 C (107.1 F)
-1.1 C (30.0 F)
n/a
n/a
Jun
43.9 C (111.0 F)
3.3 C (37.9 F)
n/a
n/a
Jul
46.1 C (115.0 F)
4.4 C (39.9 F)
n/a
n/a
Aug
43.9 C (111.0 F)
2.8 C (37.0 F)
n/a
n/a
Sep
45.0 C (113.0 F)
-1.7 C (28.9 F)
n/a
n/a
Oct
40.0 C (104.0 F)
-2.2 C (28.0 F)
n/a
n/a
Nov
32.8 C (91.0 F)
-3.9 C (25.0 F)
n/a
n/a
Dec
26.1 C (79.0 F)
-7.2 C (19.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Cloverdale still stand. 1912 holds the most, with 62.
Standing records at Cloverdale by the year they were set
Year set
Standing records
1895
4
1902
27
1903
39
1904
40
1905
35
1906
27
1907
20
1908
32
1909
40
1910
37
1911
33
1912
62
1913
30
1914
20
1915
17
1916
41
1917
37
1918
26
1919
32
1920
55
1921
36
1922
16
1923
24
1924
45
1925
29
1926
35
1927
21
1928
20
1929
32
1930
22
1931
18
1932
59
1933
34
1934
27
1935
23
1936
28
1937
23
1938
10
1939
22
1940
14
1941
13
1942
11
1943
25
1944
21
1945
14
1946
7
1947
24
1948
20
1949
22
1950
21
1951
17
1952
24
1953
23
1954
17
1955
13
All-Time Record Progression
2 new records
2 all-time records were set at Cloverdale between 11 December 1932 and 10 January 1949. Each dot is a new record.
When Cloverdale 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)
1949-01-10
Record low minimum temperature
Record low minimum temperature -8.3 C (17.1 F)
Wettest Day of Each Month
Nov: 220.2 mm (8.7 in)
The wettest day on record for each calendar month at Cloverdale. The most was 220.2 mm (8.7 in) on 18 November 1920.
Record daily precipitation for each month at Cloverdale
Month
Record daily precipitation (mm)
Date
Jan
147.3 mm (5.8 in)
4 January 1895
Feb
138.4 mm (5.4 in)
4 February 1937
Mar
101.1 mm (4.0 in)
10 March 1904
Apr
91.7 mm (3.6 in)
7 April 1893
May
48.8 mm (1.9 in)
7 May 1905
Jun
33.8 mm (1.3 in)
16 June 1937
Jul
10.4 mm (0.4 in)
1 July 1916
Aug
30.5 mm (1.2 in)
28 August 1954
Sep
46.2 mm (1.8 in)
6 September 1912
Oct
139.7 mm (5.5 in)
29 October 1945
Nov
220.2 mm (8.7 in)
18 November 1920
Dec
144.8 mm (5.7 in)
10 December 1937
Period of Record Coverage
1894 to 1955
Complete yearUnder 90 percent of days
56 years of record at Cloverdale, 1894 to 1955. 9 years have data for under 90 percent of days and are left out of rankings: 1894, 1895, 1902, 1910, 1947, 1948, 1949, 1950 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 41 complete years at Cloverdale, 1903 to 1954. Blue stripes are years cooler than the station's own mean of 15.4 C (59.7 F); red stripes are warmer. The coolest year was 1912, at 13.6 C (56.5 F), and the warmest was 1934, at 16.9 C (62.4 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Cloverdale as warming stripes, 1903 to 1954
Year
Annual mean temperature
Difference from the station mean
1903
15.5 C
+0.12 C
1904
15.6 C
+0.16 C
1905
15.6 C
+0.22 C
1907
15.0 C
-0.43 C
1908
14.9 C
-0.51 C
1909
14.9 C
-0.54 C
1912
13.6 C
-1.80 C
1913
15.4 C
+0.01 C
1914
15.0 C
-0.36 C
1915
15.2 C
-0.16 C
1916
14.7 C
-0.74 C
1917
15.3 C
-0.11 C
1918
15.0 C
-0.43 C
1919
14.4 C
-1.01 C
1920
14.0 C
-1.44 C
1921
15.0 C
-0.43 C
1922
15.2 C
-0.22 C
1923
15.6 C
+0.17 C
1924
14.9 C
-0.49 C
1925
15.0 C
-0.44 C
1927
15.6 C
+0.24 C
1928
15.9 C
+0.48 C
1929
14.9 C
-0.51 C
1930
15.7 C
+0.25 C
1933
15.5 C
+0.11 C
1934
16.9 C
+1.48 C
1935
15.3 C
-0.12 C
1936
16.7 C
+1.32 C
1938
15.6 C
+0.17 C
1939
16.4 C
+1.03 C
1940
16.3 C
+0.94 C
1941
16.0 C
+0.64 C
1942
15.9 C
+0.49 C
1944
15.9 C
+0.53 C
1945
15.8 C
+0.40 C
1946
15.2 C
-0.18 C
1947
16.2 C
+0.82 C
1951
15.4 C
+0.01 C
1952
15.2 C
-0.17 C
1953
15.8 C
+0.43 C
1954
15.3 C
-0.12 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1903 to 1954. In Fahrenheit: 0.4 F (0.1 to 0.6) per decade. The slope is a straight line fitted to 41 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Cloverdale
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 (0.1 to 0.6) per decade
1903 to 1954
41
Rise
Mean daily maximum
0.3 C (0.1 to 0.6) per decade
0.6 F (0.2 to 1.0) per decade
1903 to 1954
41
Rise
Mean daily minimum
0.08 C (-0.02 to 0.18) per decade
0.14 F (-0.04 to 0.32) per decade
1903 to 1954
41
Not clearly different from zero
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 1955
Yearly extremes at Cloverdale: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.1 C (115.0 F)
1905
42.2 C (108.0 F)
56
Coldest night (TNn)
-8.3 C (17.1 F)
1949
-3.9 C (25.0 F)
55
Wettest day (Rx1day)
220.2 mm (8.7 in)
1920
71.5 mm (2.8 in)
58
Wettest five days (Rx5day)
286.7 mm (11.3 in)
1896
168.0 mm (6.6 in)
58
Longest dry spell (CDD)
180 days
1909
97 days
58
Hottest day (TXx)
The hottest day of the year at Cloverdale, 1893 to 1955. The record is 46.1 C (115.0 F) in 1905, marked on the chart; the median year is 42.2 C (108.0 F).
Hottest day (TXx) at Cloverdale by year
Year
Hottest day (TXx)
1893
n/a
1894
35.0 C (95.0 F)
1895
41.1 C (106.0 F)
1896
n/a
1902
43.3 C (109.9 F)
1903
43.3 C (109.9 F)
1904
43.3 C (109.9 F)
1905
46.1 C (115.0 F)
1906
41.7 C (107.1 F)
1907
37.8 C (100.0 F)
1908
40.6 C (105.1 F)
1909
40.6 C (105.1 F)
1910
42.2 C (108.0 F)
1911
38.3 C (100.9 F)
1912
39.4 C (102.9 F)
1913
43.3 C (109.9 F)
1914
38.3 C (100.9 F)
1915
42.2 C (108.0 F)
1916
42.2 C (108.0 F)
1917
41.1 C (106.0 F)
1918
39.4 C (102.9 F)
1919
41.7 C (107.1 F)
1920
40.6 C (105.1 F)
1921
41.7 C (107.1 F)
1922
42.8 C (109.0 F)
1923
43.9 C (111.0 F)
1924
40.6 C (105.1 F)
1925
43.9 C (111.0 F)
1926
43.9 C (111.0 F)
1927
40.6 C (105.1 F)
1928
41.1 C (106.0 F)
1929
40.6 C (105.1 F)
1930
41.7 C (107.1 F)
1931
42.2 C (108.0 F)
1932
40.6 C (105.1 F)
1933
43.3 C (109.9 F)
1934
42.8 C (109.0 F)
1935
43.3 C (109.9 F)
1936
41.7 C (107.1 F)
1937
43.9 C (111.0 F)
1938
41.1 C (106.0 F)
1939
43.3 C (109.9 F)
1940
42.2 C (108.0 F)
1941
41.1 C (106.0 F)
1942
43.3 C (109.9 F)
1943
42.8 C (109.0 F)
1944
44.4 C (111.9 F)
1945
42.8 C (109.0 F)
1946
43.9 C (111.0 F)
1947
40.0 C (104.0 F)
1948
42.2 C (108.0 F)
1949
41.1 C (106.0 F)
1950
45.0 C (113.0 F)
1951
43.3 C (109.9 F)
1952
42.2 C (108.0 F)
1953
41.7 C (107.1 F)
1954
42.8 C (109.0 F)
1955
43.3 C (109.9 F)
Coldest night (TNn)
The coldest night of the year at Cloverdale, 1893 to 1955. The record is -8.3 C (17.1 F) in 1949, marked on the chart; the median year is -3.9 C (25.0 F).
Coldest night (TNn) at Cloverdale by year
Year
Coldest night (TNn)
1893
n/a
1894
n/a
1895
7.2 C (45.0 F)
1896
n/a
1902
-1.1 C (30.0 F)
1903
-3.9 C (25.0 F)
1904
-1.7 C (28.9 F)
1905
-4.4 C (24.1 F)
1906
-2.8 C (27.0 F)
1907
-2.2 C (28.0 F)
1908
-4.4 C (24.1 F)
1909
-2.8 C (27.0 F)
1910
-5.0 C (23.0 F)
1911
-2.8 C (27.0 F)
1912
-3.3 C (26.1 F)
1913
-5.6 C (21.9 F)
1914
-2.8 C (27.0 F)
1915
-3.3 C (26.1 F)
1916
-3.9 C (25.0 F)
1917
-5.0 C (23.0 F)
1918
-5.0 C (23.0 F)
1919
-5.6 C (21.9 F)
1920
-3.9 C (25.0 F)
1921
-4.4 C (24.1 F)
1922
-5.6 C (21.9 F)
1923
-5.0 C (23.0 F)
1924
-6.1 C (21.0 F)
1925
-2.2 C (28.0 F)
1926
-4.4 C (24.1 F)
1927
-2.8 C (27.0 F)
1928
-5.0 C (23.0 F)
1929
-5.0 C (23.0 F)
1930
-6.7 C (19.9 F)
1931
-4.4 C (24.1 F)
1932
-7.2 C (19.0 F)
1933
-2.8 C (27.0 F)
1934
-2.2 C (28.0 F)
1935
-3.9 C (25.0 F)
1936
-3.3 C (26.1 F)
1937
-6.7 C (19.9 F)
1938
-3.3 C (26.1 F)
1939
-2.8 C (27.0 F)
1940
-6.7 C (19.9 F)
1941
-1.7 C (28.9 F)
1942
-1.7 C (28.9 F)
1943
-5.6 C (21.9 F)
1944
-2.2 C (28.0 F)
1945
-3.3 C (26.1 F)
1946
-3.9 C (25.0 F)
1947
-4.4 C (24.1 F)
1948
-6.7 C (19.9 F)
1949
-8.3 C (17.1 F)
1950
-4.4 C (24.1 F)
1951
-2.2 C (28.0 F)
1952
-2.2 C (28.0 F)
1953
-2.2 C (28.0 F)
1954
-3.9 C (25.0 F)
1955
-2.8 C (27.0 F)
Wettest day (Rx1day)
The wettest day of the year at Cloverdale, 1893 to 1955. The record is 220.2 mm (8.7 in) in 1920, marked on the chart; the median year is 71.5 mm (2.8 in).
Wettest day (Rx1day) at Cloverdale by year
Year
Wettest day (Rx1day)
1893
91.7 mm (3.6 in)
1894
111.3 mm (4.4 in)
1895
147.3 mm (5.8 in)
1896
89.4 mm (3.5 in)
1902
132.1 mm (5.2 in)
1903
61.7 mm (2.4 in)
1904
115.3 mm (4.5 in)
1905
71.9 mm (2.8 in)
1906
118.6 mm (4.7 in)
1907
81.8 mm (3.2 in)
1908
45.2 mm (1.8 in)
1909
136.7 mm (5.4 in)
1910
40.6 mm (1.6 in)
1911
101.6 mm (4.0 in)
1912
57.9 mm (2.3 in)
1913
95.3 mm (3.8 in)
1914
106.2 mm (4.2 in)
1915
97.3 mm (3.8 in)
1916
64.3 mm (2.5 in)
1917
88.6 mm (3.5 in)
1918
58.7 mm (2.3 in)
1919
62.0 mm (2.4 in)
1920
220.2 mm (8.7 in)
1921
84.3 mm (3.3 in)
1922
57.9 mm (2.3 in)
1923
41.9 mm (1.6 in)
1924
69.6 mm (2.7 in)
1925
69.6 mm (2.7 in)
1926
117.9 mm (4.6 in)
1927
57.2 mm (2.3 in)
1928
50.8 mm (2.0 in)
1929
57.2 mm (2.3 in)
1930
49.8 mm (2.0 in)
1931
50.8 mm (2.0 in)
1932
53.6 mm (2.1 in)
1933
94.0 mm (3.7 in)
1934
50.3 mm (2.0 in)
1935
65.5 mm (2.6 in)
1936
53.6 mm (2.1 in)
1937
144.8 mm (5.7 in)
1938
57.4 mm (2.3 in)
1939
55.9 mm (2.2 in)
1940
93.5 mm (3.7 in)
1941
71.1 mm (2.8 in)
1942
61.0 mm (2.4 in)
1943
132.1 mm (5.2 in)
1944
40.1 mm (1.6 in)
1945
139.7 mm (5.5 in)
1946
74.2 mm (2.9 in)
1947
73.4 mm (2.9 in)
1948
51.3 mm (2.0 in)
1949
57.2 mm (2.3 in)
1950
118.9 mm (4.7 in)
1951
79.8 mm (3.1 in)
1952
102.6 mm (4.0 in)
1953
68.1 mm (2.7 in)
1954
127.8 mm (5.0 in)
1955
46.0 mm (1.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Cloverdale, 1893 to 1955. The record is 286.7 mm (11.3 in) in 1896, marked on the chart; the median year is 168.0 mm (6.6 in).
Wettest five days (Rx5day) at Cloverdale by year
Year
Wettest five days (Rx5day)
1893
142.7 mm (5.6 in)
1894
207.3 mm (8.2 in)
1895
263.2 mm (10.4 in)
1896
286.7 mm (11.3 in)
1902
239.0 mm (9.4 in)
1903
163.3 mm (6.4 in)
1904
193.9 mm (7.6 in)
1905
131.3 mm (5.2 in)
1906
252.7 mm (9.9 in)
1907
234.9 mm (9.2 in)
1908
88.4 mm (3.5 in)
1909
246.4 mm (9.7 in)
1910
120.4 mm (4.7 in)
1911
198.0 mm (7.8 in)
1912
104.9 mm (4.1 in)
1913
189.3 mm (7.5 in)
1914
233.6 mm (9.2 in)
1915
268.0 mm (10.6 in)
1916
118.7 mm (4.7 in)
1917
178.4 mm (7.0 in)
1918
92.2 mm (3.6 in)
1919
147.1 mm (5.8 in)
1920
278.8 mm (11.0 in)
1921
167.2 mm (6.6 in)
1922
122.7 mm (4.8 in)
1923
78.7 mm (3.1 in)
1924
105.5 mm (4.2 in)
1925
164.1 mm (6.5 in)
1926
236.8 mm (9.3 in)
1927
168.7 mm (6.6 in)
1928
144.8 mm (5.7 in)
1929
191.1 mm (7.5 in)
1930
92.9 mm (3.7 in)
1931
143.1 mm (5.6 in)
1932
109.4 mm (4.3 in)
1933
149.3 mm (5.9 in)
1934
186.7 mm (7.4 in)
1935
124.9 mm (4.9 in)
1936
174.4 mm (6.9 in)
1937
240.5 mm (9.5 in)
1938
157.7 mm (6.2 in)
1939
104.6 mm (4.1 in)
1940
240.2 mm (9.5 in)
1941
169.4 mm (6.7 in)
1942
203.0 mm (8.0 in)
1943
279.7 mm (11.0 in)
1944
145.4 mm (5.7 in)
1945
236.2 mm (9.3 in)
1946
166.7 mm (6.6 in)
1947
110.9 mm (4.4 in)
1948
81.6 mm (3.2 in)
1949
121.7 mm (4.8 in)
1950
177.7 mm (7.0 in)
1951
207.8 mm (8.2 in)
1952
215.9 mm (8.5 in)
1953
153.5 mm (6.0 in)
1954
196.1 mm (7.7 in)
1955
110.0 mm (4.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Cloverdale, 1893 to 1955. The record is 180 days in 1909, marked on the chart; the median year is 97 days.
Longest dry spell (CDD) at Cloverdale by year
Year
Longest dry spell (CDD)
1893
41 days
1894
43 days
1895
37 days
1896
25 days
1902
134 days
1903
106 days
1904
58 days
1905
108 days
1906
99 days
1907
94 days
1908
91 days
1909
180 days
1910
154 days
1911
109 days
1912
69 days
1913
100 days
1914
85 days
1915
31 days
1916
43 days
1917
44 days
1918
31 days
1919
68 days
1920
22 days
1921
24 days
1922
31 days
1923
24 days
1924
38 days
1925
51 days
1926
146 days
1927
139 days
1928
148 days
1929
62 days
1930
103 days
1931
127 days
1932
93 days
1933
130 days
1934
109 days
1935
137 days
1936
113 days
1937
106 days
1938
128 days
1939
154 days
1940
102 days
1941
67 days
1942
133 days
1943
139 days
1944
117 days
1945
110 days
1946
67 days
1947
121 days
1948
117 days
1949
39 days
1950
75 days
1951
141 days
1952
110 days
1953
83 days
1954
45 days
1955
93 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
40 years with a frost
Across 40 years with a frost, the median last spring frost at Cloverdale falls on 16 March and the median first autumn frost on 23 November, which leaves a median of 256 days between them.
Fitted over all years, the growing season changes by +1.2 days per decade at this station.
Frost dates and growing season at Cloverdale
Measure
Median, all years
Earliest period
Recent period (1916 to 1954)
Recent against earliest
Fitted trend
Last spring frost
16 March
n/a
14 March
n/a
-1.4 days per decade
First autumn frost
23 November
n/a
19 November
n/a
-0.2 days per decade
Growing days
256 days
n/a
250 days
n/a
+1.2 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
33 years, 1903 to 1954
A day with at least 72.8 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 195.8 mm (7.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Cloverdale: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
72.8 mm (2.9 in)
5 years
101.1 mm (4.0 in)
10 years
121.6 mm (4.8 in)
25 years
149.6 mm (5.9 in)
50 years
172.0 mm (6.8 in)
Longer than the 33 years of record
100 years
195.8 mm (7.7 in)
Longer than the 33 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, 33 years of values from 1903 to 1954.
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: 144.8 mm (5.7 in) in 1937; 139.7 mm (5.5 in) in 1945; 136.7 mm (5.4 in) in 1909.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Cloverdale standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Cloverdale 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.