Colusa Brg Weather Records (USC00041945)

Record envelope, standing records and threshold days for Colusa Brg (USC00041945), California, United States, with 60 years of record.

Key Facts for Colusa Brg

Colusa Brg (USC00041945) is a weather station in California, United States at 39.22 latitude and -122.00 longitude, 18 m (59 ft) above sea level.
The station reports from 1893 to 1952, 60 years of record.
1,464 records set at Colusa Brg still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Colusa Brg set a daily record precipitation of 23.4 mm (0.9 in) on 25 April 1952.

About the Station

Location: California, United States, 39.22 latitude, -122.00 longitude.
Elevation: 18 m (59 ft).
Period of record: 1893 to 1952, 60 years.
Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Colusa Brg. 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 Colusa Brg, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	25.6 C (78.1 F)	-8.3 C (17.1 F)	n/a	n/a
Feb	26.1 C (79.0 F)	-5.0 C (23.0 F)	n/a	n/a
Mar	31.1 C (88.0 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	38.9 C (102.0 F)	1.1 C (34.0 F)	n/a	n/a
Jun	43.3 C (109.9 F)	5.6 C (42.1 F)	n/a	n/a
Jul	44.4 C (111.9 F)	10.0 C (50.0 F)	n/a	n/a
Aug	45.6 C (114.1 F)	6.1 C (43.0 F)	n/a	n/a
Sep	43.3 C (109.9 F)	5.0 C (41.0 F)	n/a	n/a
Oct	37.2 C (99.0 F)	-0.6 C (30.9 F)	n/a	n/a
Nov	30.0 C (86.0 F)	-4.4 C (24.1 F)	n/a	n/a
Dec	24.4 C (75.9 F)	-10.0 C (14.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Colusa Brg still stand. 1916 holds the most, with 57.

Standing records at Colusa Brg by the year they were set
Year set	Standing records
1893	41
1894	31
1901	10
1902	19
1903	30
1904	30
1905	35
1910	4
1911	36
1912	41
1913	43
1914	29
1915	16
1916	57
1917	48
1919	41
1920	51
1921	22
1922	37
1923	35
1924	47
1925	29
1926	33
1927	23
1928	28
1929	48
1930	36
1931	42
1932	37
1933	39
1934	41
1935	19
1936	40
1937	30
1938	16
1939	43
1940	32
1941	30
1942	22
1943	27
1944	33
1945	30
1946	15
1947	35
1948	33

Wettest Day of Each Month

Jan: 143.5 mm (5.6 in)

The wettest day on record for each calendar month at Colusa Brg. The most was 143.5 mm (5.6 in) on 2 January 1916.

Record daily precipitation for each month at Colusa Brg
Month	Record daily precipitation (mm)	Date
Jan	143.5 mm (5.6 in)	2 January 1916
Feb	54.4 mm (2.1 in)	3 February 1944
Mar	79.2 mm (3.1 in)	7 March 1911
Apr	62.2 mm (2.4 in)	5 April 1926
May	34.8 mm (1.4 in)	7 May 1905
Jun	17.3 mm (0.7 in)	9 June 1929
Jul	3.3 mm (0.13 in)	2 July 1920
Aug	2.5 mm (0.10 in)	13 August 1916
Sep	51.6 mm (2.0 in)	6 September 1912
Oct	58.7 mm (2.3 in)	25 October 1951
Nov	52.8 mm (2.1 in)	9 November 1902
Dec	63.5 mm (2.5 in)	11 December 1937

Period of Record Coverage

1893 to 1948

46 years of record at Colusa Brg, 1893 to 1948. 14 years have data for under 90 percent of days and are left out of rankings: 1893, 1894, 1901, 1902, 1903, 1904, 1906, 1910 and others.

Days with data per year at Colusa Brg
Year	Days with data	Share of year	Complete
1893	326	89%	No
1894	303	83%	No
1901	31	8%	No
1902	169	46%	No
1903	267	73%	No
1904	290	79%	No
1905	334	92%	Yes
1906	1	0%	No
1910	4	1%	No
1911	301	82%	No
1912	349	95%	Yes
1913	326	89%	No
1914	335	92%	Yes
1915	334	92%	Yes
1916	287	78%	No
1917	277	76%	No
1919	259	71%	No
1920	366	100%	Yes
1921	365	100%	Yes
1922	365	100%	Yes
1923	365	100%	Yes
1924	366	100%	Yes
1925	365	100%	Yes
1926	365	100%	Yes
1927	365	100%	Yes
1928	366	100%	Yes
1929	365	100%	Yes
1930	365	100%	Yes
1931	365	100%	Yes
1932	366	100%	Yes
1933	365	100%	Yes
1934	365	100%	Yes
1935	363	99%	Yes
1936	365	100%	Yes
1937	363	99%	Yes
1938	333	91%	Yes
1939	365	100%	Yes
1940	364	99%	Yes
1941	365	100%	Yes
1942	361	99%	Yes
1943	365	100%	Yes
1944	365	100%	Yes
1945	359	98%	Yes
1946	361	99%	Yes
1947	364	100%	Yes
1948	272	74%	No

Latest Records

Latest records at Colusa Brg
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 April 1952	Colusa Brg, US	daily rain	23.4 mm (0.9 in)	10.4 mm (0.4 in)	33 years	20 of 100 (Routine)
25 January 1952	Colusa Brg, US	daily rain	27.9 mm (1.1 in)	5.8 mm (0.23 in)	26 years	19 of 100 (Routine)
24 January 1952	Colusa Brg, US	daily rain	17.8 mm (0.7 in)	1.0 mm (0.04 in)	9 years	8 of 100 (Routine)
12 January 1952	Colusa Brg, US	daily rain	36.3 mm (1.4 in)	20.3 mm (0.8 in)	14 years	28 of 100 (Routine)
1 December 1951	Colusa Brg, US	daily rain	26.4 mm (1.0 in)	12.4 mm (0.5 in)	36 years	26 of 100 (Routine)
25 October 1951	Colusa Brg, US	monthly rain	58.7 mm (2.3 in)	10.9 mm (0.4 in)	9 years	31 of 100 (Routine)
4 May 1951	Colusa Brg, US	daily rain	26.7 mm (1.1 in)	24.7 mm (1.0 in)	10 years	48 of 100 (Notable)
3 May 1951	Colusa Brg, US	daily rain	10.2 mm (0.4 in)	6.4 mm (0.25 in)	9 years	17 of 100 (Routine)
3 December 1950	Colusa Brg, US	daily rain	37.8 mm (1.5 in)	3.3 mm (0.13 in)	35 years	17 of 100 (Routine)
26 October 1950	Colusa Brg, US	daily rain	21.3 mm (0.8 in)	16.2 mm (0.6 in)	39 years	20 of 100 (Routine)
4 February 1950	Colusa Brg, US	daily rain	37.8 mm (1.5 in)	5.8 mm (0.23 in)	22 years	16 of 100 (Routine)
31 July 1949	Colusa Brg, US	daily rain	1.0 mm (0.04 in)	1.0 mm (0.04 in)	55 years	20 of 100 (Routine)
10 May 1949	Colusa Brg, US	daily rain	1.3 mm (0.05 in)	1.0 mm (0.04 in)	28 years	14 of 100 (Routine)
9 May 1949	Colusa Brg, US	daily rain (Tie)	5.6 mm (0.22 in)	tie	16 years	2 of 100 (Routine)
19 March 1949	Colusa Brg, US	daily rain	9.7 mm (0.38 in)	2.8 mm (0.11 in)	44 years	20 of 100 (Routine)
12 March 1949	Colusa Brg, US	daily rain	40.1 mm (1.6 in)	18.5 mm (0.7 in)	44 years	35 of 100 (Notable)
11 October 1948	Colusa Brg, US	daily rain	24.1 mm (0.9 in)	13.4 mm (0.5 in)	44 years	20 of 100 (Routine)
18 September 1948	Colusa Brg, US	daily low max	21.7 C (71.1 F)	0.5 C (0.9 F)	27 years	14 of 100 (Routine)
11 September 1948	Colusa Brg, US	daily high max	40.0 C (104.0 F)	0.6 C (1.1 F)	26 years	13 of 100 (Routine)
24 August 1948	Colusa Brg, US	daily low max (Tie)	27.8 C (82.0 F)	tie	5 years	1 of 100 (Routine)

Climate Trend

26 complete years, 1904 to 1947

One stripe for each of 26 complete years at Colusa Brg, 1904 to 1947. Blue stripes are years cooler than the station's own mean of 16.3 C (61.3 F); red stripes are warmer. The coolest year was 1930, at 15.7 C (60.3 F), and the warmest was 1934, at 17.6 C (63.7 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Colusa Brg as warming stripes, 1904 to 1947
Year	Annual mean temperature	Difference from the station mean
1904	16.1 C	-0.16 C
1905	16.2 C	-0.11 C
1920	15.9 C	-0.44 C
1921	16.0 C	-0.34 C
1922	15.7 C	-0.56 C
1923	15.9 C	-0.41 C
1924	16.1 C	-0.22 C
1925	15.8 C	-0.48 C
1926	16.6 C	+0.35 C
1927	15.8 C	-0.45 C
1928	16.1 C	-0.19 C
1929	15.8 C	-0.49 C
1930	15.7 C	-0.58 C
1931	16.8 C	+0.55 C
1932	16.7 C	+0.43 C
1933	16.4 C	+0.12 C
1934	17.6 C	+1.33 C
1935	15.9 C	-0.40 C
1936	16.8 C	+0.51 C
1937	16.0 C	-0.31 C
1939	17.1 C	+0.81 C
1940	17.1 C	+0.82 C
1941	16.6 C	+0.35 C
1943	16.1 C	-0.21 C
1944	15.8 C	-0.49 C
1947	16.8 C	+0.49 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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 1952

Yearly extremes at Colusa Brg: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.6 C (114.1 F)	1933	41.7 C (107.1 F)	46
Coldest night (TNn)	-10.0 C (14.0 F)	1932	-3.3 C (26.1 F)	46
Wettest day (Rx1day)	143.5 mm (5.6 in)	1916	39.0 mm (1.5 in)	50
Wettest five days (Rx5day)	159.2 mm (6.3 in)	1916	76.9 mm (3.0 in)	50
Longest dry spell (CDD)	176 days	1905	113 days	50

Hottest day (TXx)

The hottest day of the year at Colusa Brg, 1893 to 1952. The record is 45.6 C (114.1 F) in 1933, marked on the chart; the median year is 41.7 C (107.1 F).

Hottest day (TXx) at Colusa Brg by year
Year	Hottest day (TXx)
1893	38.9 C (102.0 F)
1894	41.1 C (106.0 F)
1901	41.7 C (107.1 F)
1902	43.3 C (109.9 F)
1903	39.4 C (102.9 F)
1904	38.9 C (102.0 F)
1905	43.3 C (109.9 F)
1906	27.2 C (81.0 F)
1910	37.8 C (100.0 F)
1911	40.6 C (105.1 F)
1912	39.4 C (102.9 F)
1913	41.7 C (107.1 F)
1914	40.0 C (104.0 F)
1915	40.6 C (105.1 F)
1916	36.7 C (98.1 F)
1917	42.8 C (109.0 F)
1919	40.6 C (105.1 F)
1920	42.8 C (109.0 F)
1921	41.1 C (106.0 F)
1922	42.8 C (109.0 F)
1923	44.4 C (111.9 F)
1924	41.7 C (107.1 F)
1925	43.3 C (109.9 F)
1926	42.2 C (108.0 F)
1927	41.1 C (106.0 F)
1928	41.1 C (106.0 F)
1929	42.8 C (109.0 F)
1930	41.7 C (107.1 F)
1931	43.9 C (111.0 F)
1932	42.8 C (109.0 F)
1933	45.6 C (114.1 F)
1934	42.8 C (109.0 F)
1935	42.8 C (109.0 F)
1936	41.1 C (106.0 F)
1937	42.2 C (108.0 F)
1938	42.8 C (109.0 F)
1939	42.2 C (108.0 F)
1940	40.0 C (104.0 F)
1941	40.6 C (105.1 F)
1942	43.3 C (109.9 F)
1943	44.4 C (111.9 F)
1944	43.3 C (109.9 F)
1945	42.8 C (109.0 F)
1946	42.2 C (108.0 F)
1947	41.7 C (107.1 F)
1948	41.7 C (107.1 F)
1949	n/a
1950	n/a
1951	n/a
1952	n/a

Coldest night (TNn)

The coldest night of the year at Colusa Brg, 1893 to 1952. The record is -10.0 C (14.0 F) in 1932, marked on the chart; the median year is -3.3 C (26.1 F).

Coldest night (TNn) at Colusa Brg by year
Year	Coldest night (TNn)
1893	-2.2 C (28.0 F)
1894	-3.9 C (25.0 F)
1901	9.4 C (48.9 F)
1902	-1.7 C (28.9 F)
1903	-2.8 C (27.0 F)
1904	-1.7 C (28.9 F)
1905	-4.4 C (24.1 F)
1906	0.0 C (32.0 F)
1910	-0.6 C (30.9 F)
1911	-5.0 C (23.0 F)
1912	-4.4 C (24.1 F)
1913	-5.0 C (23.0 F)
1914	-2.2 C (28.0 F)
1915	-5.0 C (23.0 F)
1916	-2.2 C (28.0 F)
1917	-2.8 C (27.0 F)
1919	-4.4 C (24.1 F)
1920	-2.2 C (28.0 F)
1921	-4.4 C (24.1 F)
1922	-5.6 C (21.9 F)
1923	-3.9 C (25.0 F)
1924	-7.2 C (19.0 F)
1925	-1.7 C (28.9 F)
1926	-3.3 C (26.1 F)
1927	-3.3 C (26.1 F)
1928	-4.4 C (24.1 F)
1929	-5.0 C (23.0 F)
1930	-7.8 C (18.0 F)
1931	-3.3 C (26.1 F)
1932	-10.0 C (14.0 F)
1933	-2.8 C (27.0 F)
1934	-0.6 C (30.9 F)
1935	-3.3 C (26.1 F)
1936	-3.3 C (26.1 F)
1937	-8.3 C (17.1 F)
1938	-2.8 C (27.0 F)
1939	-3.3 C (26.1 F)
1940	-3.9 C (25.0 F)
1941	-1.1 C (30.0 F)
1942	-2.8 C (27.0 F)
1943	-5.0 C (23.0 F)
1944	-1.7 C (28.9 F)
1945	-4.4 C (24.1 F)
1946	-3.3 C (26.1 F)
1947	-3.9 C (25.0 F)
1948	-2.8 C (27.0 F)
1949	n/a
1950	n/a
1951	n/a
1952	n/a

Wettest day (Rx1day)

The wettest day of the year at Colusa Brg, 1893 to 1952. The record is 143.5 mm (5.6 in) in 1916, marked on the chart; the median year is 39.0 mm (1.5 in).

Wettest day (Rx1day) at Colusa Brg by year
Year	Wettest day (Rx1day)
1893	27.4 mm (1.1 in)
1894	27.2 mm (1.1 in)
1901	0.0 mm (0.00 in)
1902	52.8 mm (2.1 in)
1903	39.1 mm (1.5 in)
1904	52.1 mm (2.1 in)
1905	34.8 mm (1.4 in)
1906	22.1 mm (0.9 in)
1910	17.8 mm (0.7 in)
1911	79.2 mm (3.1 in)
1912	51.6 mm (2.0 in)
1913	45.7 mm (1.8 in)
1914	36.3 mm (1.4 in)
1915	46.0 mm (1.8 in)
1916	143.5 mm (5.6 in)
1917	23.4 mm (0.9 in)
1919	21.6 mm (0.9 in)
1920	40.6 mm (1.6 in)
1921	34.5 mm (1.4 in)
1922	62.0 mm (2.4 in)
1923	19.6 mm (0.8 in)
1924	35.6 mm (1.4 in)
1925	43.2 mm (1.7 in)
1926	62.2 mm (2.4 in)
1927	42.2 mm (1.7 in)
1928	35.1 mm (1.4 in)
1929	37.1 mm (1.5 in)
1930	29.5 mm (1.2 in)
1931	48.3 mm (1.9 in)
1932	34.5 mm (1.4 in)
1933	59.7 mm (2.4 in)
1934	36.1 mm (1.4 in)
1935	55.9 mm (2.2 in)
1936	39.6 mm (1.6 in)
1937	63.5 mm (2.5 in)
1938	33.8 mm (1.3 in)
1939	17.8 mm (0.7 in)
1940	55.4 mm (2.2 in)
1941	47.8 mm (1.9 in)
1942	35.6 mm (1.4 in)
1943	39.6 mm (1.6 in)
1944	54.4 mm (2.1 in)
1945	38.4 mm (1.5 in)
1946	39.4 mm (1.6 in)
1947	38.9 mm (1.5 in)
1948	38.1 mm (1.5 in)
1949	40.1 mm (1.6 in)
1950	37.8 mm (1.5 in)
1951	58.7 mm (2.3 in)
1952	36.3 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Colusa Brg, 1893 to 1952. The record is 159.2 mm (6.3 in) in 1916, marked on the chart; the median year is 76.9 mm (3.0 in).

Wettest five days (Rx5day) at Colusa Brg by year
Year	Wettest five days (Rx5day)
1893	42.4 mm (1.7 in)
1894	35.6 mm (1.4 in)
1901	0.0 mm (0.00 in)
1902	59.9 mm (2.4 in)
1903	63.5 mm (2.5 in)
1904	73.1 mm (2.9 in)
1905	54.6 mm (2.1 in)
1906	0.0 mm (0.00 in)
1910	31.8 mm (1.3 in)
1911	137.1 mm (5.4 in)
1912	81.3 mm (3.2 in)
1913	91.1 mm (3.6 in)
1914	112.7 mm (4.4 in)
1915	80.1 mm (3.2 in)
1916	159.2 mm (6.3 in)
1917	58.8 mm (2.3 in)
1919	41.7 mm (1.6 in)
1920	97.3 mm (3.8 in)
1921	96.5 mm (3.8 in)
1922	100.6 mm (4.0 in)
1923	44.8 mm (1.8 in)
1924	55.7 mm (2.2 in)
1925	62.0 mm (2.4 in)
1926	124.1 mm (4.9 in)
1927	92.0 mm (3.6 in)
1928	69.1 mm (2.7 in)
1929	94.8 mm (3.7 in)
1930	59.4 mm (2.3 in)
1931	79.0 mm (3.1 in)
1932	44.5 mm (1.8 in)
1933	94.5 mm (3.7 in)
1934	105.4 mm (4.1 in)
1935	99.6 mm (3.9 in)
1936	75.8 mm (3.0 in)
1937	93.2 mm (3.7 in)
1938	81.4 mm (3.2 in)
1939	34.3 mm (1.4 in)
1940	105.4 mm (4.1 in)
1941	84.6 mm (3.3 in)
1942	85.4 mm (3.4 in)
1943	86.2 mm (3.4 in)
1944	104.7 mm (4.1 in)
1945	81.3 mm (3.2 in)
1946	34.3 mm (1.4 in)
1947	67.8 mm (2.7 in)
1948	52.4 mm (2.1 in)
1949	78.0 mm (3.1 in)
1950	70.6 mm (2.8 in)
1951	72.9 mm (2.9 in)
1952	58.9 mm (2.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Colusa Brg, 1893 to 1952. The record is 176 days in 1905, marked on the chart; the median year is 113 days.

Longest dry spell (CDD) at Colusa Brg by year
Year	Longest dry spell (CDD)
1893	74 days
1894	45 days
1901	31 days
1902	135 days
1903	167 days
1904	148 days
1905	176 days
1906	31 days
1910	31 days
1911	130 days
1912	71 days
1913	127 days
1914	99 days
1915	32 days
1916	22 days
1917	21 days
1919	135 days
1920	95 days
1921	75 days
1922	103 days
1923	21 days
1924	58 days
1925	31 days
1926	111 days
1927	138 days
1928	140 days
1929	76 days
1930	124 days
1931	84 days
1932	154 days
1933	173 days
1934	121 days
1935	137 days
1936	145 days
1937	107 days
1938	148 days
1939	125 days
1940	145 days
1941	110 days
1942	138 days
1943	155 days
1944	128 days
1945	124 days
1946	60 days
1947	121 days
1948	115 days
1949	98 days
1950	77 days
1951	149 days
1952	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

26 years with a frost

Across 26 years with a frost, the median last spring frost at Colusa Brg falls on 16 February and the median first autumn frost on 25 November, which leaves a median of 287 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 Colusa Brg
Measure	Median, all years	Earliest period	Recent period (1904 to 1947)	Recent against earliest	Fitted trend
Last spring frost	16 February	n/a	16 February	n/a	-2.9 days per decade
First autumn frost	25 November	n/a	25 November	n/a	0.0 days per decade
Growing days	287 days	n/a	287 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

33 years, 1903 to 1951

A day with at least 41.9 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 84.4 mm (3.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Colusa Brg: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	41.9 mm (1.6 in)
5 years	52.8 mm (2.1 in)
10 years	60.1 mm (2.4 in)
25 years	69.7 mm (2.7 in)
50 years	77.0 mm (3.0 in)	Longer than the 33 years of record
100 years	84.4 mm (3.3 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 1951.

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: 79.2 mm (3.1 in) in 1911; 63.5 mm (2.5 in) in 1937; 62.2 mm (2.4 in) in 1926.

Download the Data

Data for Colusa Brg standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Colusa Brg 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).