Record envelope, standing records and threshold days for Oroville 1 N (USC00046522), California, United States, with 61 years of record.
Key Facts for Oroville 1 N
Oroville 1 N (USC00046522) is a weather station in California, United States at 39.52 latitude and -121.55 longitude, 82 m (269 ft) above sea level.
The station reports from 1893 to 1953, 61 years of record.
1,464 records set at Oroville 1 N still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Oroville 1 N set a daily record low maximum temperature of 14.4 C (57.9 F) on 11 April 1953.
About the Station
Location: California, United States, 39.52 latitude, -121.55 longitude.
Elevation: 82 m (269 ft).
Period of record: 1893 to 1953, 61 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 Oroville 1 N. 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 Oroville 1 N, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
24.4 C (75.9 F)
-9.4 C (15.1 F)
n/a
n/a
Feb
27.2 C (81.0 F)
-6.1 C (21.0 F)
n/a
n/a
Mar
34.4 C (93.9 F)
-3.9 C (25.0 F)
n/a
n/a
Apr
36.7 C (98.1 F)
-1.7 C (28.9 F)
n/a
n/a
May
41.7 C (107.1 F)
0.0 C (32.0 F)
n/a
n/a
Jun
46.7 C (116.1 F)
4.4 C (39.9 F)
n/a
n/a
Jul
46.1 C (115.0 F)
6.1 C (43.0 F)
n/a
n/a
Aug
46.1 C (115.0 F)
1.7 C (35.1 F)
n/a
n/a
Sep
46.1 C (115.0 F)
2.2 C (36.0 F)
n/a
n/a
Oct
40.6 C (105.1 F)
-1.7 C (28.9 F)
n/a
n/a
Nov
31.7 C (89.1 F)
-5.6 C (21.9 F)
n/a
n/a
Dec
25.6 C (78.1 F)
-10.6 C (12.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Oroville 1 N still stand. 1896 holds the most, with 103.
Standing records at Oroville 1 N by the year they were set
Year set
Standing records
1893
49
1894
31
1895
86
1896
103
1897
32
1898
6
1903
15
1904
19
1905
28
1906
26
1907
10
1908
24
1909
28
1910
15
1911
17
1912
15
1913
35
1914
22
1915
10
1916
22
1917
35
1918
23
1919
15
1920
28
1921
26
1922
42
1923
25
1924
56
1925
44
1926
27
1927
18
1928
22
1929
35
1930
39
1931
35
1932
32
1933
35
1934
16
1935
8
1936
19
1937
17
1938
15
1939
25
1940
6
1941
10
1942
16
1943
12
1944
12
1945
10
1946
15
1947
18
1948
35
1949
29
1950
33
1951
17
1952
13
1953
8
All-Time Record Progression
2 new records
2 all-time records were set at Oroville 1 N between 15 December 1929 and 11 December 1932. Each dot is a new record.
When Oroville 1 N set new all-time records
Date
Kind
Detail
1929-12-15
Record daily precipitation
Record daily precipitation 112.8 mm (4.4 in)
1932-12-11
Record low minimum temperature
Record low minimum temperature -10.6 C (12.9 F)
Wettest Day of Each Month
Dec: 112.8 mm (4.4 in)
The wettest day on record for each calendar month at Oroville 1 N. The most was 112.8 mm (4.4 in) on 15 December 1929.
Record daily precipitation for each month at Oroville 1 N
Month
Record daily precipitation (mm)
Date
Jan
100.3 mm (3.9 in)
2 January 1916
Feb
85.1 mm (3.4 in)
7 February 1924
Mar
65.8 mm (2.6 in)
8 March 1912
Apr
111.8 mm (4.4 in)
5 April 1926
May
46.2 mm (1.8 in)
27 May 1906
Jun
30.0 mm (1.2 in)
16 June 1937
Jul
8.4 mm (0.33 in)
4 July 1895
Aug
3.8 mm (0.15 in)
30 August 1896
Sep
55.9 mm (2.2 in)
12 September 1895
Oct
46.5 mm (1.8 in)
6 October 1924
Nov
91.9 mm (3.6 in)
19 November 1920
Dec
112.8 mm (4.4 in)
15 December 1929
Period of Record Coverage
1893 to 1953
Complete yearUnder 90 percent of days
57 years of record at Oroville 1 N, 1893 to 1953. 5 years have data for under 90 percent of days and are left out of rankings: 1893, 1897, 1898, 1903, 1953.
Cooler than the station meanWarmer than the station mean
One stripe for each of 51 complete years at Oroville 1 N, 1894 to 1952. Blue stripes are years cooler than the station's own mean of 16.5 C (61.8 F); red stripes are warmer. The coolest year was 1948, at 15.0 C (59.0 F), and the warmest was 1896, at 18.9 C (66.0 F). The strongest colour marks a difference of 2.4 C (4.3 F).
Annual mean temperature at Oroville 1 N as warming stripes, 1894 to 1952
Year
Annual mean temperature
Difference from the station mean
1894
17.0 C
+0.47 C
1895
17.2 C
+0.63 C
1896
18.9 C
+2.36 C
1904
16.6 C
+0.11 C
1905
16.6 C
+0.07 C
1906
17.2 C
+0.67 C
1907
16.5 C
-0.06 C
1908
16.7 C
+0.15 C
1909
16.7 C
+0.17 C
1910
16.9 C
+0.37 C
1911
15.8 C
-0.78 C
1912
15.9 C
-0.64 C
1913
16.5 C
-0.08 C
1914
16.7 C
+0.18 C
1915
16.6 C
+0.09 C
1916
16.2 C
-0.38 C
1917
16.9 C
+0.38 C
1918
16.4 C
-0.17 C
1919
16.2 C
-0.33 C
1920
16.0 C
-0.54 C
1922
15.5 C
-0.99 C
1923
16.0 C
-0.49 C
1924
16.0 C
-0.51 C
1925
15.5 C
-1.01 C
1926
17.2 C
+0.66 C
1927
16.3 C
-0.26 C
1928
16.3 C
-0.21 C
1929
16.0 C
-0.52 C
1930
15.9 C
-0.68 C
1931
18.0 C
+1.43 C
1932
16.8 C
+0.30 C
1933
16.1 C
-0.42 C
1934
17.8 C
+1.31 C
1935
16.5 C
-0.02 C
1936
17.7 C
+1.18 C
1937
16.6 C
+0.07 C
1938
16.4 C
-0.13 C
1939
17.5 C
+0.97 C
1940
17.1 C
+0.52 C
1941
16.8 C
+0.25 C
1942
16.0 C
-0.53 C
1943
16.1 C
-0.39 C
1944
16.4 C
-0.13 C
1945
16.4 C
-0.09 C
1946
16.1 C
-0.43 C
1947
16.2 C
-0.30 C
1948
15.0 C
-1.51 C
1949
16.0 C
-0.52 C
1950
16.6 C
+0.07 C
1951
16.3 C
-0.22 C
1952
16.4 C
-0.14 C
The fitted trend in annual mean temperature here over 1894 to 1952 is -0.11 C (-0.22 to 0.01) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.20 F (-0.40 to 0.01) per decade. The slope is a straight line fitted to 51 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Oroville 1 N
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.11 C (-0.22 to 0.01) per decade
-0.20 F (-0.40 to 0.01) per decade
1894 to 1952
51
Not clearly different from zero
Mean daily maximum
0.2 C (0.1 to 0.3) per decade
0.3 F (0.1 to 0.6) per decade
1894 to 1952
51
Rise
Mean daily minimum
-0.4 C (-0.6 to -0.2) per decade
-0.7 F (-1.1 to -0.4) per decade
1894 to 1952
51
Fall
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 1953
Yearly extremes at Oroville 1 N: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.7 C (116.1 F)
1926
43.3 C (109.9 F)
57
Coldest night (TNn)
-10.6 C (12.9 F)
1932
-3.9 C (25.0 F)
57
Wettest day (Rx1day)
112.8 mm (4.4 in)
1929
55.9 mm (2.2 in)
57
Wettest five days (Rx5day)
243.6 mm (9.6 in)
1929
126.5 mm (5.0 in)
57
Longest dry spell (CDD)
195 days
1928
94 days
57
Hottest day (TXx)
The hottest day of the year at Oroville 1 N, 1893 to 1953. The record is 46.7 C (116.1 F) in 1926, marked on the chart; the median year is 43.3 C (109.9 F).
Hottest day (TXx) at Oroville 1 N by year
Year
Hottest day (TXx)
1893
36.1 C (97.0 F)
1894
41.7 C (107.1 F)
1895
41.7 C (107.1 F)
1896
43.3 C (109.9 F)
1897
38.9 C (102.0 F)
1898
25.6 C (78.1 F)
1903
42.2 C (108.0 F)
1904
42.8 C (109.0 F)
1905
46.1 C (115.0 F)
1906
43.3 C (109.9 F)
1907
39.4 C (102.9 F)
1908
44.4 C (111.9 F)
1909
43.3 C (109.9 F)
1910
42.2 C (108.0 F)
1911
44.4 C (111.9 F)
1912
42.2 C (108.0 F)
1913
43.3 C (109.9 F)
1914
42.8 C (109.0 F)
1915
43.3 C (109.9 F)
1916
42.2 C (108.0 F)
1917
42.8 C (109.0 F)
1918
43.3 C (109.9 F)
1919
43.3 C (109.9 F)
1920
43.9 C (111.0 F)
1921
43.3 C (109.9 F)
1922
45.0 C (113.0 F)
1923
44.4 C (111.9 F)
1924
42.8 C (109.0 F)
1925
46.1 C (115.0 F)
1926
46.7 C (116.1 F)
1927
43.3 C (109.9 F)
1928
43.3 C (109.9 F)
1929
43.9 C (111.0 F)
1930
43.3 C (109.9 F)
1931
45.6 C (114.1 F)
1932
43.9 C (111.0 F)
1933
46.1 C (115.0 F)
1934
42.8 C (109.0 F)
1935
43.3 C (109.9 F)
1936
42.2 C (108.0 F)
1937
43.3 C (109.9 F)
1938
45.6 C (114.1 F)
1939
42.8 C (109.0 F)
1940
42.8 C (109.0 F)
1941
45.6 C (114.1 F)
1942
43.3 C (109.9 F)
1943
43.3 C (109.9 F)
1944
43.3 C (109.9 F)
1945
43.3 C (109.9 F)
1946
43.3 C (109.9 F)
1947
42.8 C (109.0 F)
1948
43.3 C (109.9 F)
1949
42.2 C (108.0 F)
1950
46.1 C (115.0 F)
1951
43.3 C (109.9 F)
1952
43.9 C (111.0 F)
1953
28.3 C (82.9 F)
Coldest night (TNn)
The coldest night of the year at Oroville 1 N, 1893 to 1953. The record is -10.6 C (12.9 F) in 1932, marked on the chart; the median year is -3.9 C (25.0 F).
Coldest night (TNn) at Oroville 1 N by year
Year
Coldest night (TNn)
1893
-1.1 C (30.0 F)
1894
-2.8 C (27.0 F)
1895
-2.2 C (28.0 F)
1896
-2.2 C (28.0 F)
1897
-2.2 C (28.0 F)
1898
-3.3 C (26.1 F)
1903
-1.1 C (30.0 F)
1904
-2.2 C (28.0 F)
1905
-3.9 C (25.0 F)
1906
-1.7 C (28.9 F)
1907
-2.2 C (28.0 F)
1908
-3.3 C (26.1 F)
1909
-2.2 C (28.0 F)
1910
-3.9 C (25.0 F)
1911
-3.9 C (25.0 F)
1912
-3.3 C (26.1 F)
1913
-9.4 C (15.1 F)
1914
-1.7 C (28.9 F)
1915
-6.1 C (21.0 F)
1916
-3.3 C (26.1 F)
1917
-6.1 C (21.0 F)
1918
-4.4 C (24.1 F)
1919
-6.1 C (21.0 F)
1920
-2.2 C (28.0 F)
1921
-3.9 C (25.0 F)
1922
-4.4 C (24.1 F)
1923
-3.9 C (25.0 F)
1924
-6.7 C (19.9 F)
1925
-6.1 C (21.0 F)
1926
-6.7 C (19.9 F)
1927
-1.7 C (28.9 F)
1928
-4.4 C (24.1 F)
1929
-5.0 C (23.0 F)
1930
-6.7 C (19.9 F)
1931
-4.4 C (24.1 F)
1932
-10.6 C (12.9 F)
1933
-6.1 C (21.0 F)
1934
-0.6 C (30.9 F)
1935
-3.3 C (26.1 F)
1936
-2.2 C (28.0 F)
1937
-7.2 C (19.0 F)
1938
-3.3 C (26.1 F)
1939
-3.3 C (26.1 F)
1940
-5.6 C (21.9 F)
1941
-1.7 C (28.9 F)
1942
-2.8 C (27.0 F)
1943
-5.6 C (21.9 F)
1944
-1.1 C (30.0 F)
1945
-3.9 C (25.0 F)
1946
-2.8 C (27.0 F)
1947
-3.3 C (26.1 F)
1948
-5.6 C (21.9 F)
1949
-7.8 C (18.0 F)
1950
-5.0 C (23.0 F)
1951
-3.9 C (25.0 F)
1952
-3.9 C (25.0 F)
1953
-2.8 C (27.0 F)
Wettest day (Rx1day)
The wettest day of the year at Oroville 1 N, 1893 to 1953. The record is 112.8 mm (4.4 in) in 1929, marked on the chart; the median year is 55.9 mm (2.2 in).
Wettest day (Rx1day) at Oroville 1 N by year
Year
Wettest day (Rx1day)
1893
44.5 mm (1.8 in)
1894
48.3 mm (1.9 in)
1895
55.9 mm (2.2 in)
1896
77.2 mm (3.0 in)
1897
69.9 mm (2.8 in)
1898
52.1 mm (2.1 in)
1903
58.4 mm (2.3 in)
1904
65.3 mm (2.6 in)
1905
39.1 mm (1.5 in)
1906
58.7 mm (2.3 in)
1907
59.7 mm (2.4 in)
1908
48.3 mm (1.9 in)
1909
55.9 mm (2.2 in)
1910
33.0 mm (1.3 in)
1911
55.9 mm (2.2 in)
1912
65.8 mm (2.6 in)
1913
102.1 mm (4.0 in)
1914
37.3 mm (1.5 in)
1915
64.8 mm (2.6 in)
1916
100.3 mm (3.9 in)
1917
49.3 mm (1.9 in)
1918
43.7 mm (1.7 in)
1919
55.1 mm (2.2 in)
1920
91.9 mm (3.6 in)
1921
50.8 mm (2.0 in)
1922
77.7 mm (3.1 in)
1923
42.2 mm (1.7 in)
1924
85.1 mm (3.4 in)
1925
73.7 mm (2.9 in)
1926
111.8 mm (4.4 in)
1927
43.9 mm (1.7 in)
1928
48.5 mm (1.9 in)
1929
112.8 mm (4.4 in)
1930
32.5 mm (1.3 in)
1931
57.2 mm (2.3 in)
1932
31.8 mm (1.3 in)
1933
58.4 mm (2.3 in)
1934
55.9 mm (2.2 in)
1935
53.3 mm (2.1 in)
1936
43.2 mm (1.7 in)
1937
89.2 mm (3.5 in)
1938
34.3 mm (1.4 in)
1939
33.5 mm (1.3 in)
1940
64.8 mm (2.6 in)
1941
52.6 mm (2.1 in)
1942
58.4 mm (2.3 in)
1943
56.4 mm (2.2 in)
1944
58.4 mm (2.3 in)
1945
64.8 mm (2.6 in)
1946
36.8 mm (1.4 in)
1947
40.6 mm (1.6 in)
1948
49.0 mm (1.9 in)
1949
40.6 mm (1.6 in)
1950
57.7 mm (2.3 in)
1951
43.2 mm (1.7 in)
1952
78.7 mm (3.1 in)
1953
50.8 mm (2.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Oroville 1 N, 1893 to 1953. The record is 243.6 mm (9.6 in) in 1929, marked on the chart; the median year is 126.5 mm (5.0 in).
Wettest five days (Rx5day) at Oroville 1 N by year
Year
Wettest five days (Rx5day)
1893
76.3 mm (3.0 in)
1894
142.2 mm (5.6 in)
1895
166.4 mm (6.6 in)
1896
170.2 mm (6.7 in)
1897
152.5 mm (6.0 in)
1898
70.7 mm (2.8 in)
1903
121.9 mm (4.8 in)
1904
129.3 mm (5.1 in)
1905
84.6 mm (3.3 in)
1906
154.2 mm (6.1 in)
1907
145.8 mm (5.7 in)
1908
79.0 mm (3.1 in)
1909
133.6 mm (5.3 in)
1910
69.1 mm (2.7 in)
1911
138.3 mm (5.4 in)
1912
126.5 mm (5.0 in)
1913
145.0 mm (5.7 in)
1914
145.0 mm (5.7 in)
1915
131.3 mm (5.2 in)
1916
127.5 mm (5.0 in)
1917
120.5 mm (4.7 in)
1918
73.9 mm (2.9 in)
1919
114.3 mm (4.5 in)
1920
160.4 mm (6.3 in)
1921
134.9 mm (5.3 in)
1922
136.2 mm (5.4 in)
1923
101.3 mm (4.0 in)
1924
125.0 mm (4.9 in)
1925
105.7 mm (4.2 in)
1926
187.2 mm (7.4 in)
1927
94.2 mm (3.7 in)
1928
119.9 mm (4.7 in)
1929
243.6 mm (9.6 in)
1930
72.7 mm (2.9 in)
1931
130.5 mm (5.1 in)
1932
90.9 mm (3.6 in)
1933
99.1 mm (3.9 in)
1934
128.1 mm (5.0 in)
1935
88.1 mm (3.5 in)
1936
129.2 mm (5.1 in)
1937
146.1 mm (5.8 in)
1938
98.3 mm (3.9 in)
1939
61.2 mm (2.4 in)
1940
147.9 mm (5.8 in)
1941
106.2 mm (4.2 in)
1942
136.4 mm (5.4 in)
1943
130.4 mm (5.1 in)
1944
120.9 mm (4.8 in)
1945
141.0 mm (5.6 in)
1946
103.9 mm (4.1 in)
1947
83.8 mm (3.3 in)
1948
49.3 mm (1.9 in)
1949
91.3 mm (3.6 in)
1950
141.0 mm (5.6 in)
1951
103.1 mm (4.1 in)
1952
121.1 mm (4.8 in)
1953
139.3 mm (5.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Oroville 1 N, 1893 to 1953. The record is 195 days in 1928, marked on the chart; the median year is 94 days.
Longest dry spell (CDD) at Oroville 1 N by year
Year
Longest dry spell (CDD)
1893
27 days
1894
49 days
1895
36 days
1896
37 days
1897
37 days
1898
13 days
1903
94 days
1904
144 days
1905
77 days
1906
53 days
1907
73 days
1908
120 days
1909
97 days
1910
157 days
1911
89 days
1912
69 days
1913
127 days
1914
92 days
1915
52 days
1916
81 days
1917
41 days
1918
34 days
1919
22 days
1920
54 days
1921
18 days
1922
24 days
1923
33 days
1924
35 days
1925
56 days
1926
146 days
1927
140 days
1928
195 days
1929
112 days
1930
117 days
1931
94 days
1932
87 days
1933
137 days
1934
100 days
1935
135 days
1936
89 days
1937
107 days
1938
147 days
1939
94 days
1940
121 days
1941
68 days
1942
138 days
1943
117 days
1944
127 days
1945
125 days
1946
112 days
1947
121 days
1948
102 days
1949
89 days
1950
98 days
1951
114 days
1952
104 days
1953
39 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
51 years with a frost
Across 51 years with a frost, the median last spring frost at Oroville 1 N falls on 18 March and the median first autumn frost on 28 November, which leaves a median of 254 days between them.
Fitted over all years, the growing season changes by -5.6 days per decade at this station.
Frost dates and growing season at Oroville 1 N
Measure
Median, all years
Earliest period
Recent period (1923 to 1952)
Recent against earliest
Fitted trend
Last spring frost
18 March
n/a
22 March
n/a
+3.6 days per decade
First autumn frost
28 November
n/a
22 November
n/a
-1.9 days per decade
Growing days
254 days
n/a
249 days
n/a
-5.6 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
38 years, 1896 to 1952
A day with at least 53.6 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 137.3 mm (5.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Oroville 1 N: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
53.6 mm (2.1 in)
5 years
72.6 mm (2.9 in)
10 years
86.5 mm (3.4 in)
25 years
105.5 mm (4.2 in)
50 years
120.9 mm (4.8 in)
Longer than the 38 years of record
100 years
137.3 mm (5.4 in)
Longer than the 38 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, 38 years of values from 1896 to 1952.
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: 112.8 mm (4.4 in) in 1929; 111.8 mm (4.4 in) in 1926; 102.1 mm (4.0 in) in 1913.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Oroville 1 N standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Oroville 1 N 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.