Record envelope, standing records and threshold days for Oroville (USC00046521), California, United States, with 74 years of record.
Key Facts for Oroville
Oroville (USC00046521) is a weather station in California, United States at 39.52 latitude and -121.55 longitude, 52 m (171 ft) above sea level.
The station reports from 1953 to 2026, 74 years of record.
1,464 records set at Oroville still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Oroville set a daily record high minimum temperature of 24.4 C (75.9 F) on 14 June 2026.
About the Station
Location: California, United States, 39.52 latitude, -121.55 longitude.
Elevation: 52 m (171 ft).
Period of record: 1953 to 2026, 74 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
6 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. The lines show the 2026 daily maximum and minimum. 6 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Oroville, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
27.8 C (82.0 F)
-5.6 C (21.9 F)
16.1 C (61.0 F)
1.7 C (35.1 F)
Feb
28.9 C (84.0 F)
-5.6 C (21.9 F)
22.2 C (72.0 F)
1.1 C (34.0 F)
Mar
36.1 C (97.0 F)
-3.3 C (26.1 F)
31.7 C (89.1 F)
6.7 C (44.1 F)
Apr
36.7 C (98.1 F)
-1.7 C (28.9 F)
27.8 C (82.0 F)
7.2 C (45.0 F)
May
40.0 C (104.0 F)
-1.1 C (30.0 F)
33.3 C (91.9 F)
10.6 C (51.1 F)
Jun
46.1 C (115.0 F)
1.7 C (35.1 F)
38.3 C (100.9 F)
13.3 C (55.9 F)
Jul
46.1 C (115.0 F)
6.7 C (44.1 F)
n/a
n/a
Aug
45.0 C (113.0 F)
5.6 C (42.1 F)
n/a
n/a
Sep
45.0 C (113.0 F)
3.9 C (39.0 F)
n/a
n/a
Oct
38.9 C (102.0 F)
-0.6 C (30.9 F)
n/a
n/a
Nov
32.2 C (90.0 F)
-5.0 C (23.0 F)
n/a
n/a
Dec
26.1 C (79.0 F)
-11.1 C (12.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Oroville still stand. 2011 holds the most, with 55.
Standing records at Oroville by the year they were set
Year set
Standing records
1953
10
1954
24
1955
43
1956
19
1957
20
1958
25
1959
16
1960
22
1961
49
1962
25
1963
35
1964
28
1965
20
1966
24
1967
41
1968
21
1969
16
1970
21
1971
30
1972
36
1973
29
1974
16
1975
19
1982
4
1983
12
1984
19
1985
43
1986
14
1987
26
1988
21
1989
27
1990
32
1991
29
1992
13
1993
14
1994
16
1995
46
1996
22
1997
20
1998
10
1999
12
2000
14
2001
18
2002
12
2003
11
2004
11
2005
3
2006
10
2007
13
2008
14
2009
12
2010
31
2011
55
2012
12
2013
13
2014
12
2015
13
2016
25
2017
23
2018
14
2019
20
2020
19
2021
13
2022
31
2023
33
2024
31
2025
9
2026
23
All-Time Record Progression
5 new records
5 all-time records were set at Oroville between 21 December 1990 and 22 June 2017. Each dot is a new record.
When Oroville set new all-time records
Date
Kind
Detail
1990-12-21
Record low minimum temperature
Record low minimum temperature -8.3 C (17.1 F)
1990-12-22
Record low minimum temperature
Record low minimum temperature -11.1 C (12.0 F)
1999-07-01
Record high minimum temperature
Record high minimum temperature 27.8 C (82.0 F)
2009-02-11
Record daily precipitation
Record daily precipitation 154.9 mm (6.1 in)
2017-06-22
Record high minimum temperature
Record high minimum temperature 28.9 C (84.0 F)
Wettest Day of Each Month
Feb: 154.9 mm (6.1 in)
The wettest day on record for each calendar month at Oroville. The most was 154.9 mm (6.1 in) on 11 February 2009.
Record daily precipitation for each month at Oroville
Month
Record daily precipitation (mm)
Date
Jan
96.3 mm (3.8 in)
10 January 1995
Feb
154.9 mm (6.1 in)
11 February 2009
Mar
121.9 mm (4.8 in)
6 March 2019
Apr
58.4 mm (2.3 in)
6 April 2018
May
50.8 mm (2.0 in)
16 May 1996
Jun
44.7 mm (1.8 in)
29 June 2011
Jul
40.4 mm (1.6 in)
8 July 1974
Aug
38.1 mm (1.5 in)
16 August 1993
Sep
50.8 mm (2.0 in)
5 September 2017
Oct
128.5 mm (5.1 in)
13 October 1962
Nov
73.4 mm (2.9 in)
30 November 1998
Dec
71.1 mm (2.8 in)
6 December 1955
Period of Record Coverage
1953 to 2026
Complete yearUnder 90 percent of days
68 years of record at Oroville, 1953 to 2026. 23 years have data for under 90 percent of days and are left out of rankings: 1953, 1964, 1975, 1982, 1984, 1985, 1986, 1988 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 42 complete years at Oroville, 1954 to 2022. Blue stripes are years cooler than the station's own mean of 16.9 C (62.4 F); red stripes are warmer. The coolest year was 2011, at 14.9 C (58.8 F), and the warmest was 2022, at 18.4 C (65.2 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Oroville as warming stripes, 1954 to 2022
Year
Annual mean temperature
Difference from the station mean
1954
16.0 C
-0.83 C
1955
16.0 C
-0.83 C
1957
16.1 C
-0.80 C
1958
17.5 C
+0.61 C
1959
17.2 C
+0.33 C
1960
17.1 C
+0.24 C
1961
17.1 C
+0.26 C
1962
17.0 C
+0.17 C
1963
16.4 C
-0.52 C
1965
16.7 C
-0.14 C
1966
17.7 C
+0.78 C
1967
17.4 C
+0.54 C
1968
17.1 C
+0.23 C
1969
17.2 C
+0.35 C
1970
17.6 C
+0.68 C
1971
16.5 C
-0.38 C
1973
17.3 C
+0.43 C
1974
17.2 C
+0.30 C
1983
16.3 C
-0.53 C
1985
15.5 C
-1.33 C
1986
16.5 C
-0.38 C
1991
15.9 C
-1.00 C
1992
16.8 C
-0.11 C
1993
16.4 C
-0.50 C
1994
15.9 C
-1.02 C
1995
15.5 C
-1.37 C
1997
17.3 C
+0.42 C
2002
16.8 C
-0.11 C
2004
16.9 C
+0.06 C
2006
17.0 C
+0.08 C
2010
15.3 C
-1.57 C
2011
14.9 C
-1.98 C
2012
16.8 C
-0.07 C
2013
17.0 C
+0.09 C
2014
18.1 C
+1.27 C
2015
17.8 C
+0.89 C
2016
16.5 C
-0.33 C
2018
17.7 C
+0.80 C
2019
17.7 C
+0.84 C
2020
18.3 C
+1.41 C
2021
18.4 C
+1.51 C
2022
18.4 C
+1.55 C
The fitted trend in annual mean temperature here over 1954 to 2022 is 0.07 C (-0.04 to 0.18) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.3) per decade. The slope is a straight line fitted to 42 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Oroville
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.07 C (-0.04 to 0.18) per decade
0.1 F (-0.1 to 0.3) per decade
1954 to 2022
42
Not clearly different from zero
Mean daily maximum
0.15 C (0.04 to 0.26) per decade
0.3 F (0.1 to 0.5) per decade
1954 to 2022
42
Rise
Mean daily minimum
-0.01 C (-0.17 to 0.15) per decade
-0.01 F (-0.30 to 0.27) per decade
1954 to 2022
42
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
1953 to 2026
Yearly extremes at Oroville: 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)
1961
42.2 C (108.0 F)
68
Coldest night (TNn)
-11.1 C (12.0 F)
1990
-3.3 C (26.1 F)
68
Wettest day (Rx1day)
154.9 mm (6.1 in)
2009
50.8 mm (2.0 in)
68
Wettest five days (Rx5day)
300.9 mm (11.8 in)
1962
103.0 mm (4.1 in)
68
Longest dry spell (CDD)
213 days
2001
92 days
68
Hottest day (TXx)
The hottest day of the year at Oroville, 1953 to 2026. The record is 46.1 C (115.0 F) in 1961, marked on the chart; the median year is 42.2 C (108.0 F).
Hottest day (TXx) at Oroville by year
Year
Hottest day (TXx)
1953
42.2 C (108.0 F)
1954
43.3 C (109.9 F)
1955
43.9 C (111.0 F)
1956
42.8 C (109.0 F)
1957
43.3 C (109.9 F)
1958
41.7 C (107.1 F)
1959
42.8 C (109.0 F)
1960
44.4 C (111.9 F)
1961
46.1 C (115.0 F)
1962
41.7 C (107.1 F)
1963
40.0 C (104.0 F)
1964
41.7 C (107.1 F)
1965
41.1 C (106.0 F)
1966
43.3 C (109.9 F)
1967
42.2 C (108.0 F)
1968
42.2 C (108.0 F)
1969
41.7 C (107.1 F)
1970
43.3 C (109.9 F)
1971
45.0 C (113.0 F)
1972
46.1 C (115.0 F)
1973
41.7 C (107.1 F)
1974
40.6 C (105.1 F)
1975
44.4 C (111.9 F)
1982
21.1 C (70.0 F)
1983
40.0 C (104.0 F)
1984
43.3 C (109.9 F)
1985
42.2 C (108.0 F)
1986
40.0 C (104.0 F)
1987
42.2 C (108.0 F)
1988
41.1 C (106.0 F)
1989
41.7 C (107.1 F)
1990
42.8 C (109.0 F)
1991
43.3 C (109.9 F)
1992
41.1 C (106.0 F)
1993
40.6 C (105.1 F)
1994
40.0 C (104.0 F)
1995
41.7 C (107.1 F)
1996
43.3 C (109.9 F)
1997
42.8 C (109.0 F)
1998
42.2 C (108.0 F)
1999
41.7 C (107.1 F)
2000
43.3 C (109.9 F)
2001
41.7 C (107.1 F)
2002
41.7 C (107.1 F)
2003
41.7 C (107.1 F)
2004
40.6 C (105.1 F)
2005
42.2 C (108.0 F)
2006
43.9 C (111.0 F)
2007
40.0 C (104.0 F)
2008
43.3 C (109.9 F)
2009
42.8 C (109.0 F)
2010
41.1 C (106.0 F)
2011
41.1 C (106.0 F)
2012
40.6 C (105.1 F)
2013
43.3 C (109.9 F)
2014
41.7 C (107.1 F)
2015
42.2 C (108.0 F)
2016
41.1 C (106.0 F)
2017
42.8 C (109.0 F)
2018
42.2 C (108.0 F)
2019
41.1 C (106.0 F)
2020
42.2 C (108.0 F)
2021
44.4 C (111.9 F)
2022
45.0 C (113.0 F)
2023
42.2 C (108.0 F)
2024
46.1 C (115.0 F)
2025
41.1 C (106.0 F)
2026
38.3 C (100.9 F)
Coldest night (TNn)
The coldest night of the year at Oroville, 1953 to 2026. The record is -11.1 C (12.0 F) in 1990, marked on the chart; the median year is -3.3 C (26.1 F).
Coldest night (TNn) at Oroville by year
Year
Coldest night (TNn)
1953
-1.7 C (28.9 F)
1954
-2.8 C (27.0 F)
1955
-5.0 C (23.0 F)
1956
-3.9 C (25.0 F)
1957
-5.6 C (21.9 F)
1958
-2.8 C (27.0 F)
1959
-4.4 C (24.1 F)
1960
-5.6 C (21.9 F)
1961
-4.4 C (24.1 F)
1962
-5.0 C (23.0 F)
1963
-4.4 C (24.1 F)
1964
-1.7 C (28.9 F)
1965
-4.4 C (24.1 F)
1966
-2.8 C (27.0 F)
1967
-3.3 C (26.1 F)
1968
-3.9 C (25.0 F)
1969
-3.3 C (26.1 F)
1970
-3.3 C (26.1 F)
1971
-2.2 C (28.0 F)
1972
-3.3 C (26.1 F)
1973
-3.9 C (25.0 F)
1974
-2.8 C (27.0 F)
1975
-4.4 C (24.1 F)
1982
-1.1 C (30.0 F)
1983
-3.3 C (26.1 F)
1984
-2.2 C (28.0 F)
1985
-5.6 C (21.9 F)
1986
-3.9 C (25.0 F)
1987
-3.9 C (25.0 F)
1988
-3.9 C (25.0 F)
1989
-5.6 C (21.9 F)
1990
-11.1 C (12.0 F)
1991
-5.0 C (23.0 F)
1992
-2.8 C (27.0 F)
1993
-3.3 C (26.1 F)
1994
-4.4 C (24.1 F)
1995
-3.3 C (26.1 F)
1996
-6.7 C (19.9 F)
1997
-5.0 C (23.0 F)
1998
-5.0 C (23.0 F)
1999
-1.1 C (30.0 F)
2000
-3.3 C (26.1 F)
2001
-1.7 C (28.9 F)
2002
-5.6 C (21.9 F)
2003
-0.6 C (30.9 F)
2004
-1.1 C (30.0 F)
2005
-1.1 C (30.0 F)
2006
-1.7 C (28.9 F)
2007
-3.9 C (25.0 F)
2008
-2.2 C (28.0 F)
2009
-5.6 C (21.9 F)
2010
-6.1 C (21.0 F)
2011
-5.6 C (21.9 F)
2012
-2.8 C (27.0 F)
2013
-3.9 C (25.0 F)
2014
-0.6 C (30.9 F)
2015
-2.2 C (28.0 F)
2016
-5.0 C (23.0 F)
2017
0.0 C (32.0 F)
2018
-3.3 C (26.1 F)
2019
-0.6 C (30.9 F)
2020
-2.2 C (28.0 F)
2021
-0.6 C (30.9 F)
2022
-1.1 C (30.0 F)
2023
-1.1 C (30.0 F)
2024
0.0 C (32.0 F)
2025
0.0 C (32.0 F)
2026
1.1 C (34.0 F)
Wettest day (Rx1day)
The wettest day of the year at Oroville, 1953 to 2026. The record is 154.9 mm (6.1 in) in 2009, marked on the chart; the median year is 50.8 mm (2.0 in).
Wettest day (Rx1day) at Oroville by year
Year
Wettest day (Rx1day)
1953
39.6 mm (1.6 in)
1954
52.1 mm (2.1 in)
1955
71.1 mm (2.8 in)
1956
66.3 mm (2.6 in)
1957
37.6 mm (1.5 in)
1958
44.2 mm (1.7 in)
1959
44.7 mm (1.8 in)
1960
61.0 mm (2.4 in)
1961
39.6 mm (1.6 in)
1962
128.5 mm (5.1 in)
1963
56.1 mm (2.2 in)
1964
82.6 mm (3.3 in)
1965
38.4 mm (1.5 in)
1966
59.2 mm (2.3 in)
1967
63.8 mm (2.5 in)
1968
49.8 mm (2.0 in)
1969
85.1 mm (3.4 in)
1970
79.2 mm (3.1 in)
1971
27.4 mm (1.1 in)
1972
25.7 mm (1.0 in)
1973
72.4 mm (2.9 in)
1974
46.7 mm (1.8 in)
1975
75.2 mm (3.0 in)
1982
64.8 mm (2.6 in)
1983
72.9 mm (2.9 in)
1984
27.9 mm (1.1 in)
1985
45.7 mm (1.8 in)
1986
63.5 mm (2.5 in)
1987
45.7 mm (1.8 in)
1988
62.2 mm (2.4 in)
1989
50.3 mm (2.0 in)
1990
38.6 mm (1.5 in)
1991
63.8 mm (2.5 in)
1992
40.1 mm (1.6 in)
1993
57.2 mm (2.3 in)
1994
63.2 mm (2.5 in)
1995
96.3 mm (3.8 in)
1996
50.8 mm (2.0 in)
1997
61.0 mm (2.4 in)
1998
86.6 mm (3.4 in)
1999
44.7 mm (1.8 in)
2000
47.0 mm (1.9 in)
2001
50.8 mm (2.0 in)
2002
50.5 mm (2.0 in)
2003
38.9 mm (1.5 in)
2004
64.8 mm (2.6 in)
2005
50.8 mm (2.0 in)
2006
50.8 mm (2.0 in)
2007
48.3 mm (1.9 in)
2008
45.7 mm (1.8 in)
2009
154.9 mm (6.1 in)
2010
44.5 mm (1.8 in)
2011
44.7 mm (1.8 in)
2012
50.8 mm (2.0 in)
2013
34.0 mm (1.3 in)
2014
50.8 mm (2.0 in)
2015
42.4 mm (1.7 in)
2016
50.8 mm (2.0 in)
2017
53.3 mm (2.1 in)
2018
58.4 mm (2.3 in)
2019
121.9 mm (4.8 in)
2020
50.8 mm (2.0 in)
2021
50.8 mm (2.0 in)
2022
52.1 mm (2.1 in)
2023
45.7 mm (1.8 in)
2024
50.8 mm (2.0 in)
2025
88.9 mm (3.5 in)
2026
58.4 mm (2.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Oroville, 1953 to 2026. The record is 300.9 mm (11.8 in) in 1962, marked on the chart; the median year is 103.0 mm (4.1 in).
Wettest five days (Rx5day) at Oroville by year
Year
Wettest five days (Rx5day)
1953
64.2 mm (2.5 in)
1954
74.8 mm (2.9 in)
1955
179.3 mm (7.1 in)
1956
132.5 mm (5.2 in)
1957
90.2 mm (3.6 in)
1958
87.7 mm (3.5 in)
1959
106.9 mm (4.2 in)
1960
88.9 mm (3.5 in)
1961
95.5 mm (3.8 in)
1962
300.9 mm (11.8 in)
1963
96.2 mm (3.8 in)
1964
109.8 mm (4.3 in)
1965
110.0 mm (4.3 in)
1966
86.5 mm (3.4 in)
1967
158.8 mm (6.3 in)
1968
92.5 mm (3.6 in)
1969
141.2 mm (5.6 in)
1970
141.5 mm (5.6 in)
1971
67.8 mm (2.7 in)
1972
70.3 mm (2.8 in)
1973
136.5 mm (5.4 in)
1974
94.9 mm (3.7 in)
1975
115.9 mm (4.6 in)
1982
129.4 mm (5.1 in)
1983
158.5 mm (6.2 in)
1984
55.1 mm (2.2 in)
1985
97.1 mm (3.8 in)
1986
206.2 mm (8.1 in)
1987
68.1 mm (2.7 in)
1988
94.0 mm (3.7 in)
1989
80.5 mm (3.2 in)
1990
84.8 mm (3.3 in)
1991
124.3 mm (4.9 in)
1992
129.5 mm (5.1 in)
1993
119.2 mm (4.7 in)
1994
99.7 mm (3.9 in)
1995
184.0 mm (7.2 in)
1996
124.4 mm (4.9 in)
1997
179.6 mm (7.1 in)
1998
164.8 mm (6.5 in)
1999
81.8 mm (3.2 in)
2000
79.9 mm (3.1 in)
2001
74.0 mm (2.9 in)
2002
134.4 mm (5.3 in)
2003
82.5 mm (3.2 in)
2004
110.5 mm (4.4 in)
2005
112.1 mm (4.4 in)
2006
88.9 mm (3.5 in)
2007
64.9 mm (2.6 in)
2008
73.1 mm (2.9 in)
2009
192.4 mm (7.6 in)
2010
93.6 mm (3.7 in)
2011
79.8 mm (3.1 in)
2012
119.9 mm (4.7 in)
2013
71.6 mm (2.8 in)
2014
116.4 mm (4.6 in)
2015
75.7 mm (3.0 in)
2016
106.3 mm (4.2 in)
2017
119.4 mm (4.7 in)
2018
93.7 mm (3.7 in)
2019
165.4 mm (6.5 in)
2020
50.8 mm (2.0 in)
2021
111.7 mm (4.4 in)
2022
115.6 mm (4.6 in)
2023
110.0 mm (4.3 in)
2024
96.3 mm (3.8 in)
2025
136.7 mm (5.4 in)
2026
71.6 mm (2.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Oroville, 1953 to 2026. The record is 213 days in 2001, marked on the chart; the median year is 92 days.
Longest dry spell (CDD) at Oroville by year
Year
Longest dry spell (CDD)
1953
74 days
1954
77 days
1955
105 days
1956
90 days
1957
50 days
1958
101 days
1959
117 days
1960
133 days
1961
107 days
1962
55 days
1963
80 days
1964
82 days
1965
80 days
1966
151 days
1967
96 days
1968
74 days
1969
124 days
1970
125 days
1971
95 days
1972
86 days
1973
110 days
1974
111 days
1975
54 days
1982
12 days
1983
34 days
1984
121 days
1985
81 days
1986
132 days
1987
114 days
1988
94 days
1989
39 days
1990
79 days
1991
69 days
1992
112 days
1993
69 days
1994
138 days
1995
129 days
1996
75 days
1997
76 days
1998
105 days
1999
145 days
2000
122 days
2001
213 days
2002
167 days
2003
84 days
2004
113 days
2005
88 days
2006
132 days
2007
105 days
2008
188 days
2009
101 days
2010
106 days
2011
49 days
2012
82 days
2013
87 days
2014
90 days
2015
69 days
2016
105 days
2017
84 days
2018
80 days
2019
72 days
2020
146 days
2021
176 days
2022
105 days
2023
26 days
2024
54 days
2025
28 days
2026
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
36 years with a frost
Across 36 years with a frost, the median last spring frost at Oroville falls on 22 February and the median first autumn frost on 28 November, which leaves a median of 288 days between them.
Fitted over all years, the growing season changes by +2.3 days per decade at this station.
Frost dates and growing season at Oroville
Measure
Median, all years
Earliest period
Recent period (1961 to 2022)
Recent against earliest
Fitted trend
Last spring frost
22 February
n/a
19 February
n/a
-1.1 days per decade
First autumn frost
28 November
n/a
29 November
n/a
+1.1 days per decade
Growing days
288 days
n/a
290 days
n/a
+2.3 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
55 years, 1954 to 2022
A day with at least 52.4 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 153.3 mm (6.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Oroville: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
52.4 mm (2.1 in)
5 years
70.4 mm (2.8 in)
10 years
85.3 mm (3.4 in)
25 years
108.4 mm (4.3 in)
50 years
129.1 mm (5.1 in)
100 years
153.3 mm (6.0 in)
Longer than the 55 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, 55 years of values from 1954 to 2022.
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: 154.9 mm (6.1 in) in 2009; 128.5 mm (5.1 in) in 1962; 121.9 mm (4.8 in) in 2019.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2002 to 2022 against 1961 to 1990
Over 2002 to 2022, Oroville had a mean temperature of 17.2 C (62.9 F) and 702.3 mm (27.6 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Cordoba Aeropuerto (Spain, 9,263 km away), Winters (United States, 116 km away) and Santa Rita Exp Range (United States, 1,294 km away).
Climate twins of Oroville: stations whose 1961 to 1990 climate is closest to its 2002 to 2022 climate
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Data for Oroville standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Oroville 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.