Record envelope, standing records and threshold days for Idria (USC00044204), California, United States, with 59 years of record.
Key Facts for Idria
Idria (USC00044204) is a weather station in California, United States at 36.42 latitude and -120.67 longitude, 808 m (2,651 ft) above sea level.
The station reports from 1918 to 1976, 59 years of record.
1,464 records set at Idria still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Idria tied a daily record high minimum temperature of 13.3 C (55.9 F) on 8 November 1976.
About the Station
Location: California, United States, 36.42 latitude, -120.67 longitude.
Elevation: 808 m (2,651 ft).
Period of record: 1918 to 1976, 59 years.
Eligible elements: tmax, tmin, prcp, snow.
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 Idria. 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 Idria, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
28.3 C (82.9 F)
-10.0 C (14.0 F)
n/a
n/a
Feb
29.4 C (84.9 F)
-7.8 C (18.0 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-7.8 C (18.0 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-6.1 C (21.0 F)
n/a
n/a
May
37.2 C (99.0 F)
-1.1 C (30.0 F)
n/a
n/a
Jun
43.9 C (111.0 F)
1.1 C (34.0 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
40.0 C (104.0 F)
2.2 C (36.0 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-1.7 C (28.9 F)
n/a
n/a
Nov
30.6 C (87.1 F)
-6.1 C (21.0 F)
n/a
n/a
Dec
30.0 C (86.0 F)
-10.0 C (14.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Idria still stand. 1928 holds the most, with 88.
Standing records at Idria by the year they were set
Year set
Standing records
1918
27
1919
22
1920
8
1921
40
1922
30
1923
27
1924
30
1925
45
1926
45
1927
13
1928
88
1929
41
1930
31
1931
37
1932
59
1933
52
1934
33
1935
14
1936
14
1937
15
1938
19
1939
24
1940
23
1941
7
1942
17
1943
18
1944
20
1945
22
1946
16
1947
24
1948
22
1949
42
1950
34
1951
25
1952
22
1953
22
1954
23
1955
17
1956
26
1957
28
1958
30
1959
24
1960
21
1961
18
1962
14
1963
29
1964
23
1965
13
1966
13
1967
18
1968
14
1969
6
1970
5
1971
25
1972
26
1973
9
1974
10
1975
22
1976
22
All-Time Record Progression
1 new records
1 all-time records were set at Idria between 11 January 1949 and 11 January 1949. Each dot is a new record.
When Idria set new all-time records
Date
Kind
Detail
1949-01-11
Record low maximum temperature
Record low maximum temperature -2.2 C (28.0 F)
Wettest Day of Each Month
Feb: 82.6 mm (3.3 in)
The wettest day on record for each calendar month at Idria. The most was 82.6 mm (3.3 in) on 4 February 1928.
Record daily precipitation for each month at Idria
Month
Record daily precipitation (mm)
Date
Jan
74.9 mm (2.9 in)
18 January 1921
Feb
82.6 mm (3.3 in)
4 February 1928
Mar
70.1 mm (2.8 in)
2 March 1938
Apr
52.1 mm (2.1 in)
3 April 1958
May
35.6 mm (1.4 in)
19 May 1928
Jun
12.7 mm (0.5 in)
15 June 1923
Jul
15.7 mm (0.6 in)
30 July 1966
Aug
31.0 mm (1.2 in)
19 August 1976
Sep
53.3 mm (2.1 in)
29 September 1976
Oct
36.1 mm (1.4 in)
30 October 1945
Nov
74.9 mm (2.9 in)
26 November 1926
Dec
74.9 mm (2.9 in)
23 December 1955
Period of Record Coverage
1918 to 1976
Complete yearUnder 90 percent of days
59 years of record at Idria, 1918 to 1976. 12 years have data for under 90 percent of days and are left out of rankings: 1918, 1920, 1923, 1924, 1941, 1942, 1944, 1963 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 40 complete years at Idria, 1919 to 1975. Blue stripes are years cooler than the station's own mean of 15.9 C (60.7 F); red stripes are warmer. The coolest year was 1930, at 13.5 C (56.3 F), and the warmest was 1926, at 19.0 C (66.2 F). The strongest colour marks a difference of 3.1 C (5.6 F).
Annual mean temperature at Idria as warming stripes, 1919 to 1975
Year
Annual mean temperature
Difference from the station mean
1919
15.7 C
-0.26 C
1921
17.0 C
+1.09 C
1922
16.4 C
+0.43 C
1925
17.9 C
+1.95 C
1926
19.0 C
+3.04 C
1927
16.6 C
+0.70 C
1928
14.8 C
-1.15 C
1929
15.5 C
-0.43 C
1930
13.5 C
-2.42 C
1931
15.7 C
-0.21 C
1932
15.5 C
-0.40 C
1934
17.8 C
+1.89 C
1937
16.2 C
+0.25 C
1938
15.9 C
-0.04 C
1939
17.3 C
+1.31 C
1943
16.5 C
+0.59 C
1946
15.6 C
-0.31 C
1947
16.3 C
+0.33 C
1948
15.1 C
-0.80 C
1949
15.4 C
-0.52 C
1952
15.4 C
-0.59 C
1953
15.1 C
-0.83 C
1954
16.2 C
+0.24 C
1955
14.9 C
-1.00 C
1956
14.9 C
-1.05 C
1957
14.1 C
-1.84 C
1958
16.3 C
+0.36 C
1959
17.3 C
+1.38 C
1960
16.1 C
+0.17 C
1961
16.3 C
+0.36 C
1962
15.7 C
-0.25 C
1964
15.6 C
-0.36 C
1965
15.7 C
-0.26 C
1966
16.2 C
+0.25 C
1969
15.7 C
-0.26 C
1970
16.0 C
+0.09 C
1972
15.5 C
-0.44 C
1973
15.6 C
-0.34 C
1974
15.8 C
-0.13 C
1975
15.3 C
-0.65 C
The fitted trend in annual mean temperature here over 1919 to 1975 is -0.16 C (-0.35 to 0.02) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.29 F (-0.63 to 0.04) per decade. The slope is a straight line fitted to 40 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Idria
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.16 C (-0.35 to 0.02) per decade
-0.29 F (-0.63 to 0.04) per decade
1919 to 1975
40
Not clearly different from zero
Mean daily maximum
-0.5 C (-0.7 to -0.2) per decade
-0.9 F (-1.3 to -0.4) per decade
1919 to 1975
40
Fall
Mean daily minimum
0.1 C (-0.1 to 0.4) per decade
0.3 F (-0.2 to 0.8) per decade
1919 to 1975
40
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
1918 to 1976
Yearly extremes at Idria: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
45.0 C (113.0 F)
1925
39.4 C (102.9 F)
59
Coldest night (TNn)
-10.0 C (14.0 F)
1937
-4.4 C (24.1 F)
59
Wettest day (Rx1day)
82.6 mm (3.3 in)
1928
47.0 mm (1.9 in)
59
Wettest five days (Rx5day)
169.7 mm (6.7 in)
1955
79.3 mm (3.1 in)
59
Longest dry spell (CDD)
189 days
1955
123 days
59
Hottest day (TXx)
The hottest day of the year at Idria, 1918 to 1976. The record is 45.0 C (113.0 F) in 1925, marked on the chart; the median year is 39.4 C (102.9 F).
Hottest day (TXx) at Idria by year
Year
Hottest day (TXx)
1918
38.9 C (102.0 F)
1919
39.4 C (102.9 F)
1920
32.2 C (90.0 F)
1921
40.6 C (105.1 F)
1922
41.7 C (107.1 F)
1923
41.7 C (107.1 F)
1924
39.4 C (102.9 F)
1925
45.0 C (113.0 F)
1926
42.2 C (108.0 F)
1927
40.0 C (104.0 F)
1928
39.4 C (102.9 F)
1929
40.0 C (104.0 F)
1930
42.2 C (108.0 F)
1931
43.9 C (111.0 F)
1932
44.4 C (111.9 F)
1933
43.9 C (111.0 F)
1934
39.4 C (102.9 F)
1935
40.6 C (105.1 F)
1936
38.9 C (102.0 F)
1937
39.4 C (102.9 F)
1938
41.1 C (106.0 F)
1939
40.0 C (104.0 F)
1940
38.9 C (102.0 F)
1941
40.0 C (104.0 F)
1942
41.7 C (107.1 F)
1943
38.9 C (102.0 F)
1944
38.9 C (102.0 F)
1945
39.4 C (102.9 F)
1946
37.8 C (100.0 F)
1947
36.7 C (98.1 F)
1948
37.8 C (100.0 F)
1949
38.3 C (100.9 F)
1950
40.0 C (104.0 F)
1951
38.9 C (102.0 F)
1952
36.7 C (98.1 F)
1953
37.2 C (99.0 F)
1954
40.6 C (105.1 F)
1955
40.0 C (104.0 F)
1956
39.4 C (102.9 F)
1957
39.4 C (102.9 F)
1958
38.3 C (100.9 F)
1959
41.7 C (107.1 F)
1960
42.8 C (109.0 F)
1961
41.7 C (107.1 F)
1962
38.3 C (100.9 F)
1963
37.8 C (100.0 F)
1964
38.3 C (100.9 F)
1965
36.1 C (97.0 F)
1966
39.4 C (102.9 F)
1967
38.9 C (102.0 F)
1968
37.8 C (100.0 F)
1969
38.3 C (100.9 F)
1970
39.4 C (102.9 F)
1971
40.6 C (105.1 F)
1972
42.8 C (109.0 F)
1973
38.9 C (102.0 F)
1974
37.8 C (100.0 F)
1975
41.1 C (106.0 F)
1976
38.3 C (100.9 F)
Coldest night (TNn)
The coldest night of the year at Idria, 1918 to 1976. The record is -10.0 C (14.0 F) in 1937, marked on the chart; the median year is -4.4 C (24.1 F).
Coldest night (TNn) at Idria by year
Year
Coldest night (TNn)
1918
-3.3 C (26.1 F)
1919
-5.6 C (21.9 F)
1920
-3.3 C (26.1 F)
1921
-3.3 C (26.1 F)
1922
-7.2 C (19.0 F)
1923
-5.6 C (21.9 F)
1924
-6.7 C (19.9 F)
1925
-1.7 C (28.9 F)
1926
-3.3 C (26.1 F)
1927
-1.7 C (28.9 F)
1928
-6.7 C (19.9 F)
1929
-7.8 C (18.0 F)
1930
-2.8 C (27.0 F)
1931
-6.1 C (21.0 F)
1932
-7.2 C (19.0 F)
1933
-6.7 C (19.9 F)
1934
0.0 C (32.0 F)
1935
-3.3 C (26.1 F)
1936
-0.6 C (30.9 F)
1937
-10.0 C (14.0 F)
1938
-6.1 C (21.0 F)
1939
-4.4 C (24.1 F)
1940
-5.6 C (21.9 F)
1941
-1.7 C (28.9 F)
1942
-5.0 C (23.0 F)
1943
-4.4 C (24.1 F)
1944
-3.9 C (25.0 F)
1945
-7.8 C (18.0 F)
1946
-2.2 C (28.0 F)
1947
-2.8 C (27.0 F)
1948
-5.0 C (23.0 F)
1949
-9.4 C (15.1 F)
1950
-6.1 C (21.0 F)
1951
-3.9 C (25.0 F)
1952
-3.9 C (25.0 F)
1953
-5.0 C (23.0 F)
1954
-4.4 C (24.1 F)
1955
-4.4 C (24.1 F)
1956
-6.1 C (21.0 F)
1957
-7.8 C (18.0 F)
1958
-3.3 C (26.1 F)
1959
-3.9 C (25.0 F)
1960
-5.6 C (21.9 F)
1961
-2.8 C (27.0 F)
1962
-7.8 C (18.0 F)
1963
-9.4 C (15.1 F)
1964
-6.1 C (21.0 F)
1965
-5.0 C (23.0 F)
1966
-3.9 C (25.0 F)
1967
-3.9 C (25.0 F)
1968
-4.4 C (24.1 F)
1969
-4.4 C (24.1 F)
1970
-3.3 C (26.1 F)
1971
-5.0 C (23.0 F)
1972
-10.0 C (14.0 F)
1973
-3.9 C (25.0 F)
1974
-4.4 C (24.1 F)
1975
-4.4 C (24.1 F)
1976
-3.9 C (25.0 F)
Wettest day (Rx1day)
The wettest day of the year at Idria, 1918 to 1976. The record is 82.6 mm (3.3 in) in 1928, marked on the chart; the median year is 47.0 mm (1.9 in).
Wettest day (Rx1day) at Idria by year
Year
Wettest day (Rx1day)
1918
43.2 mm (1.7 in)
1919
43.9 mm (1.7 in)
1920
29.2 mm (1.1 in)
1921
74.9 mm (2.9 in)
1922
55.1 mm (2.2 in)
1923
29.2 mm (1.1 in)
1924
50.8 mm (2.0 in)
1925
27.9 mm (1.1 in)
1926
74.9 mm (2.9 in)
1927
38.1 mm (1.5 in)
1928
82.6 mm (3.3 in)
1929
36.8 mm (1.4 in)
1930
35.1 mm (1.4 in)
1931
66.0 mm (2.6 in)
1932
59.7 mm (2.4 in)
1933
35.6 mm (1.4 in)
1934
44.5 mm (1.8 in)
1935
45.5 mm (1.8 in)
1936
41.9 mm (1.6 in)
1937
73.4 mm (2.9 in)
1938
70.1 mm (2.8 in)
1939
47.0 mm (1.9 in)
1940
65.5 mm (2.6 in)
1941
47.0 mm (1.9 in)
1942
31.8 mm (1.3 in)
1943
58.4 mm (2.3 in)
1944
48.3 mm (1.9 in)
1945
64.8 mm (2.6 in)
1946
36.3 mm (1.4 in)
1947
16.8 mm (0.7 in)
1948
57.2 mm (2.3 in)
1949
61.0 mm (2.4 in)
1950
43.2 mm (1.7 in)
1951
37.6 mm (1.5 in)
1952
53.8 mm (2.1 in)
1953
49.0 mm (1.9 in)
1954
43.2 mm (1.7 in)
1955
74.9 mm (2.9 in)
1956
21.1 mm (0.8 in)
1957
37.1 mm (1.5 in)
1958
52.1 mm (2.1 in)
1959
46.2 mm (1.8 in)
1960
38.4 mm (1.5 in)
1961
45.2 mm (1.8 in)
1962
61.2 mm (2.4 in)
1963
47.8 mm (1.9 in)
1964
30.0 mm (1.2 in)
1965
41.9 mm (1.6 in)
1966
66.0 mm (2.6 in)
1967
51.3 mm (2.0 in)
1968
24.9 mm (1.0 in)
1969
66.0 mm (2.6 in)
1970
63.2 mm (2.5 in)
1971
35.6 mm (1.4 in)
1972
44.2 mm (1.7 in)
1973
43.4 mm (1.7 in)
1974
54.4 mm (2.1 in)
1975
72.1 mm (2.8 in)
1976
53.3 mm (2.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Idria, 1918 to 1976. The record is 169.7 mm (6.7 in) in 1955, marked on the chart; the median year is 79.3 mm (3.1 in).
Wettest five days (Rx5day) at Idria by year
Year
Wettest five days (Rx5day)
1918
48.3 mm (1.9 in)
1919
54.4 mm (2.1 in)
1920
50.8 mm (2.0 in)
1921
138.5 mm (5.5 in)
1922
109.7 mm (4.3 in)
1923
68.6 mm (2.7 in)
1924
52.1 mm (2.1 in)
1925
43.2 mm (1.7 in)
1926
134.1 mm (5.3 in)
1927
99.4 mm (3.9 in)
1928
82.6 mm (3.3 in)
1929
47.0 mm (1.9 in)
1930
47.1 mm (1.9 in)
1931
117.4 mm (4.6 in)
1932
76.2 mm (3.0 in)
1933
34.8 mm (1.4 in)
1934
81.2 mm (3.2 in)
1935
75.0 mm (3.0 in)
1936
78.1 mm (3.1 in)
1937
115.3 mm (4.5 in)
1938
147.2 mm (5.8 in)
1939
49.8 mm (2.0 in)
1940
131.1 mm (5.2 in)
1941
105.7 mm (4.2 in)
1942
65.2 mm (2.6 in)
1943
126.5 mm (5.0 in)
1944
112.6 mm (4.4 in)
1945
129.4 mm (5.1 in)
1946
78.1 mm (3.1 in)
1947
28.8 mm (1.1 in)
1948
72.7 mm (2.9 in)
1949
84.4 mm (3.3 in)
1950
48.8 mm (1.9 in)
1951
71.4 mm (2.8 in)
1952
85.3 mm (3.4 in)
1953
51.0 mm (2.0 in)
1954
69.9 mm (2.8 in)
1955
169.7 mm (6.7 in)
1956
41.7 mm (1.6 in)
1957
53.2 mm (2.1 in)
1958
104.0 mm (4.1 in)
1959
87.9 mm (3.5 in)
1960
47.7 mm (1.9 in)
1961
70.7 mm (2.8 in)
1962
123.0 mm (4.8 in)
1963
73.0 mm (2.9 in)
1964
64.1 mm (2.5 in)
1965
112.3 mm (4.4 in)
1966
128.0 mm (5.0 in)
1967
97.8 mm (3.9 in)
1968
32.5 mm (1.3 in)
1969
153.8 mm (6.1 in)
1970
134.5 mm (5.3 in)
1971
50.8 mm (2.0 in)
1972
80.0 mm (3.1 in)
1973
79.3 mm (3.1 in)
1974
81.8 mm (3.2 in)
1975
113.0 mm (4.4 in)
1976
87.1 mm (3.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Idria, 1918 to 1976. The record is 189 days in 1955, marked on the chart; the median year is 123 days.
Longest dry spell (CDD) at Idria by year
Year
Longest dry spell (CDD)
1918
32 days
1919
11 days
1920
61 days
1921
34 days
1922
26 days
1923
21 days
1924
26 days
1925
24 days
1926
61 days
1927
158 days
1928
176 days
1929
177 days
1930
81 days
1931
157 days
1932
163 days
1933
146 days
1934
132 days
1935
117 days
1936
78 days
1937
168 days
1938
61 days
1939
123 days
1940
96 days
1941
62 days
1942
138 days
1943
172 days
1944
129 days
1945
78 days
1946
127 days
1947
135 days
1948
132 days
1949
149 days
1950
70 days
1951
170 days
1952
121 days
1953
151 days
1954
153 days
1955
189 days
1956
147 days
1957
121 days
1958
107 days
1959
144 days
1960
101 days
1961
139 days
1962
148 days
1963
58 days
1964
82 days
1965
108 days
1966
81 days
1967
124 days
1968
60 days
1969
89 days
1970
189 days
1971
140 days
1972
73 days
1973
176 days
1974
135 days
1975
114 days
1976
123 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
39 years with a frost
Across 39 years with a frost, the median last spring frost at Idria falls on 3 April and the median first autumn frost on 22 November, which leaves a median of 234 days between them.
Fitted over all years, the growing season changes by -2.8 days per decade at this station.
Frost dates and growing season at Idria
Measure
Median, all years
Earliest period
Recent period (1931 to 1975)
Recent against earliest
Fitted trend
Last spring frost
3 April
n/a
2 April
n/a
+3.9 days per decade
First autumn frost
22 November
n/a
23 November
n/a
+1.1 days per decade
Growing days
234 days
n/a
240 days
n/a
-2.8 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
47 years, 1927 to 1976
A day with at least 47.9 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 86.6 mm (3.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Idria: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
47.9 mm (1.9 in)
5 years
61.4 mm (2.4 in)
10 years
68.9 mm (2.7 in)
25 years
76.9 mm (3.0 in)
50 years
82.1 mm (3.2 in)
Longer than the 47 years of record
100 years
86.6 mm (3.4 in)
Longer than the 47 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, 47 years of values from 1927 to 1976.
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: 82.6 mm (3.3 in) in 1928; 74.9 mm (2.9 in) in 1955; 73.4 mm (2.9 in) in 1937.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Idria standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Idria 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.