Dunnigan Weather Records (USC00042568)

Record envelope, standing records and threshold days for Dunnigan (USC00042568), California, United States, with 73 years of record.

Key Facts for Dunnigan

Dunnigan (USC00042568) is a weather station in California, United States at 38.88 latitude and -121.97 longitude, 15 m (49 ft) above sea level.
The station reports from 1906 to 1978, 73 years of record.
1,460 records set at Dunnigan still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Dunnigan set a daily record precipitation of 15.5 mm (0.6 in) on 18 December 1978.

About the Station

Location: California, United States, 38.88 latitude, -121.97 longitude.
Elevation: 15 m (49 ft).
Period of record: 1906 to 1978, 73 years.
Eligible elements: prcp, snow, snwd.

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 Dunnigan. 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 Dunnigan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	18.9 C (66.0 F)	-0.6 C (30.9 F)	n/a	n/a
Feb	18.9 C (66.0 F)	0.0 C (32.0 F)	n/a	n/a
Mar	22.2 C (72.0 F)	-1.1 C (30.0 F)	n/a	n/a
Apr	32.2 C (90.0 F)	8.9 C (48.0 F)	n/a	n/a
May	36.7 C (98.1 F)	10.6 C (51.1 F)	n/a	n/a
Jun	40.6 C (105.1 F)	14.4 C (57.9 F)	n/a	n/a
Jul	43.3 C (109.9 F)	11.7 C (53.1 F)	n/a	n/a
Aug	40.6 C (105.1 F)	6.7 C (44.1 F)	n/a	n/a
Sep	41.7 C (107.1 F)	11.7 C (53.1 F)	n/a	n/a
Oct	33.3 C (91.9 F)	6.7 C (44.1 F)	n/a	n/a
Nov	24.4 C (75.9 F)	-0.6 C (30.9 F)	n/a	n/a
Dec	21.1 C (70.0 F)	-2.2 C (28.0 F)	n/a	n/a

Which Years Hold Standing Records

1,460 standing records

1,460 records at Dunnigan still stand. 1906 holds the most, with 278.

All-Time Record Progression

1 new records

1 all-time records were set at Dunnigan between 13 October 1962 and 13 October 1962. Each dot is a new record.

Wettest Day of Each Month

Oct: 93.7 mm (3.7 in)

The wettest day on record for each calendar month at Dunnigan. The most was 93.7 mm (3.7 in) on 13 October 1962.

Record daily precipitation for each month at Dunnigan
Month	Record daily precipitation (mm)	Date
Jan	85.9 mm (3.4 in)	21 January 1967
Feb	75.4 mm (3.0 in)	1 February 1975
Mar	83.8 mm (3.3 in)	7 March 1911
Apr	38.9 mm (1.5 in)	27 April 1953
May	32.5 mm (1.3 in)	3 May 1907
Jun	19.3 mm (0.8 in)	6 June 1953
Jul	16.5 mm (0.6 in)	8 July 1974
Aug	4.3 mm (0.17 in)	18 August 1975
Sep	69.9 mm (2.8 in)	7 September 1912
Oct	93.7 mm (3.7 in)	13 October 1962
Nov	52.6 mm (2.1 in)	22 November 1977
Dec	74.9 mm (2.9 in)	19 December 1955

Period of Record Coverage

1906 to 1945

12 years of record at Dunnigan, 1906 to 1945. 12 years have data for under 90 percent of days and are left out of rankings: 1906, 1907, 1909, 1911, 1912, 1913, 1914, 1915 and others.

Days with data per year at Dunnigan
Year	Days with data	Share of year	Complete
1906	266	73%	No
1907	30	8%	No
1909	30	8%	No
1911	61	17%	No
1912	121	33%	No
1913	109	30%	No
1914	60	16%	No
1915	59	16%	No
1916	212	58%	No
1917	263	72%	No
1918	148	41%	No
1945	1	0%	No

Latest Records

Latest records at Dunnigan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 December 1978	Dunnigan, US	daily rain	15.5 mm (0.6 in)	1.3 mm (0.05 in)	20 years	14 of 100 (Routine)
10 September 1978	Dunnigan, US	daily rain	6.4 mm (0.25 in)	6.4 mm (0.25 in)	72 years	20 of 100 (Routine)
16 April 1978	Dunnigan, US	daily rain	12.2 mm (0.5 in)	10.7 mm (0.4 in)	71 years	20 of 100 (Routine)
9 March 1978	Dunnigan, US	daily rain	22.1 mm (0.9 in)	6.9 mm (0.27 in)	35 years	20 of 100 (Routine)
8 February 1978	Dunnigan, US	daily rain	16.3 mm (0.6 in)	1.6 mm (0.06 in)	36 years	19 of 100 (Routine)
15 January 1978	Dunnigan, US	daily rain	41.7 mm (1.6 in)	22.6 mm (0.9 in)	64 years	44 of 100 (Notable)
10 January 1978	Dunnigan, US	daily rain	29.0 mm (1.1 in)	3.3 mm (0.13 in)	71 years	30 of 100 (Routine)
5 January 1978	Dunnigan, US	daily rain	46.7 mm (1.8 in)	27.9 mm (1.1 in)	19 years	34 of 100 (Routine)
23 December 1977	Dunnigan, US	daily rain	35.3 mm (1.4 in)	3.3 mm (0.13 in)	35 years	19 of 100 (Routine)
22 November 1977	Dunnigan, US	monthly rain	52.6 mm (2.1 in)	0.8 mm (0.03 in)	5 years	18 of 100 (Routine)
21 November 1977	Dunnigan, US	daily rain	11.4 mm (0.4 in)	2.3 mm (0.09 in)	11 years	12 of 100 (Routine)
19 September 1977	Dunnigan, US	daily rain	12.7 mm (0.5 in)	3.8 mm (0.15 in)	20 years	15 of 100 (Routine)
7 May 1977	Dunnigan, US	daily rain	10.9 mm (0.4 in)	10.9 mm (0.4 in)	71 years	20 of 100 (Routine)
1 May 1977	Dunnigan, US	daily rain	11.9 mm (0.5 in)	3.8 mm (0.15 in)	35 years	20 of 100 (Routine)
16 March 1977	Dunnigan, US	daily rain	37.3 mm (1.5 in)	21.0 mm (0.8 in)	14 years	32 of 100 (Routine)
1 October 1976	Dunnigan, US	daily rain	1.0 mm (0.04 in)	1.0 mm (0.04 in)	69 years	20 of 100 (Routine)
14 August 1976	Dunnigan, US	daily rain	0.8 mm (0.03 in)	0.8 mm (0.03 in)	70 years	20 of 100 (Routine)
11 June 1976	Dunnigan, US	daily rain	1.0 mm (0.04 in)	1.0 mm (0.04 in)	70 years	20 of 100 (Routine)
8 April 1976	Dunnigan, US	daily rain	18.3 mm (0.7 in)	8.6 mm (0.34 in)	11 years	20 of 100 (Routine)
3 March 1976	Dunnigan, US	daily rain (Tie)	19.8 mm (0.8 in)	tie	65 years	6 of 100 (Routine)

Extremes by Year

1906 to 1978

Yearly extremes at Dunnigan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.3 C (109.9 F)	1916	40.6 C (105.1 F)	12
Coldest night (TNn)	-2.2 C (28.0 F)	1916	1.7 C (35.1 F)	11
Wettest day (Rx1day)	93.7 mm (3.7 in)	1962	46.5 mm (1.8 in)	53
Wettest five days (Rx5day)	169.6 mm (6.7 in)	1911	88.6 mm (3.5 in)	52
Longest dry spell (CDD)	190 days	1969	103 days	53

Hottest day (TXx)

The hottest day of the year at Dunnigan, 1906 to 1978. The record is 43.3 C (109.9 F) in 1916, marked on the chart; the median year is 40.6 C (105.1 F).

Hottest day (TXx) at Dunnigan by year
Year	Hottest day (TXx)
1906	41.7 C (107.1 F)
1907	17.2 C (63.0 F)
1908	n/a
1909	26.1 C (79.0 F)
1910	n/a
1911	41.1 C (106.0 F)
1912	40.6 C (105.1 F)
1913	41.7 C (107.1 F)
1914	29.4 C (84.9 F)
1915	39.4 C (102.9 F)
1916	43.3 C (109.9 F)
1917	40.6 C (105.1 F)
1918	30.0 C (86.0 F)
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	41.1 C (106.0 F)
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a

Coldest night (TNn)

The coldest night of the year at Dunnigan, 1906 to 1978. The record is -2.2 C (28.0 F) in 1916, marked on the chart; the median year is 1.7 C (35.1 F).

Coldest night (TNn) at Dunnigan by year
Year	Coldest night (TNn)
1906	-0.6 C (30.9 F)
1907	0.6 C (33.1 F)
1908	n/a
1909	10.0 C (50.0 F)
1910	n/a
1911	11.1 C (52.0 F)
1912	3.3 C (37.9 F)
1913	10.0 C (50.0 F)
1914	1.7 C (35.1 F)
1915	10.0 C (50.0 F)
1916	-2.2 C (28.0 F)
1917	0.0 C (32.0 F)
1918	-1.1 C (30.0 F)
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a

Wettest day (Rx1day)

The wettest day of the year at Dunnigan, 1906 to 1978. The record is 93.7 mm (3.7 in) in 1962, marked on the chart; the median year is 46.5 mm (1.8 in).

Wettest day (Rx1day) at Dunnigan by year
Year	Wettest day (Rx1day)
1906	39.6 mm (1.6 in)
1907	35.6 mm (1.4 in)
1908	46.5 mm (1.8 in)
1909	73.9 mm (2.9 in)
1910	30.2 mm (1.2 in)
1911	83.8 mm (3.3 in)
1912	69.9 mm (2.8 in)
1913	47.0 mm (1.9 in)
1914	43.2 mm (1.7 in)
1915	57.2 mm (2.3 in)
1916	76.2 mm (3.0 in)
1917	26.2 mm (1.0 in)
1918	16.8 mm (0.7 in)
1939	21.6 mm (0.9 in)
1940	74.7 mm (2.9 in)
1941	40.4 mm (1.6 in)
1942	51.3 mm (2.0 in)
1943	48.0 mm (1.9 in)
1944	46.0 mm (1.8 in)
1945	38.9 mm (1.5 in)
1946	22.1 mm (0.9 in)
1947	42.4 mm (1.7 in)
1948	36.6 mm (1.4 in)
1949	19.6 mm (0.8 in)
1950	50.8 mm (2.0 in)
1951	81.5 mm (3.2 in)
1952	39.9 mm (1.6 in)
1953	38.9 mm (1.5 in)
1954	48.0 mm (1.9 in)
1955	74.9 mm (2.9 in)
1956	39.9 mm (1.6 in)
1957	37.3 mm (1.5 in)
1958	64.8 mm (2.6 in)
1959	58.4 mm (2.3 in)
1960	33.0 mm (1.3 in)
1961	47.2 mm (1.9 in)
1962	93.7 mm (3.7 in)
1963	78.7 mm (3.1 in)
1964	48.0 mm (1.9 in)
1965	26.4 mm (1.0 in)
1966	53.8 mm (2.1 in)
1967	85.9 mm (3.4 in)
1968	21.3 mm (0.8 in)
1969	9.9 mm (0.39 in)
1970	34.0 mm (1.3 in)
1971	31.8 mm (1.3 in)
1972	51.8 mm (2.0 in)
1973	48.0 mm (1.9 in)
1974	37.8 mm (1.5 in)
1975	75.4 mm (3.0 in)
1976	19.8 mm (0.8 in)
1977	52.6 mm (2.1 in)
1978	46.7 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Dunnigan, 1906 to 1978. The record is 169.6 mm (6.7 in) in 1911, marked on the chart; the median year is 88.6 mm (3.5 in).

Wettest five days (Rx5day) at Dunnigan by year
Year	Wettest five days (Rx5day)
1906	86.1 mm (3.4 in)
1907	101.2 mm (4.0 in)
1908	75.5 mm (3.0 in)
1909	150.3 mm (5.9 in)
1910	44.7 mm (1.8 in)
1911	169.6 mm (6.7 in)
1912	102.2 mm (4.0 in)
1913	101.8 mm (4.0 in)
1914	118.4 mm (4.7 in)
1915	105.1 mm (4.1 in)
1916	104.1 mm (4.1 in)
1917	55.2 mm (2.2 in)
1918	n/a
1939	47.3 mm (1.9 in)
1940	155.3 mm (6.1 in)
1941	94.2 mm (3.7 in)
1942	101.3 mm (4.0 in)
1943	100.1 mm (3.9 in)
1944	101.3 mm (4.0 in)
1945	99.2 mm (3.9 in)
1946	70.1 mm (2.8 in)
1947	62.0 mm (2.4 in)
1948	61.2 mm (2.4 in)
1949	53.1 mm (2.1 in)
1950	65.8 mm (2.6 in)
1951	84.8 mm (3.3 in)
1952	82.4 mm (3.2 in)
1953	43.4 mm (1.7 in)
1954	64.5 mm (2.5 in)
1955	140.7 mm (5.5 in)
1956	80.8 mm (3.2 in)
1957	65.0 mm (2.6 in)
1958	90.2 mm (3.6 in)
1959	86.9 mm (3.4 in)
1960	41.4 mm (1.6 in)
1961	100.8 mm (4.0 in)
1962	157.0 mm (6.2 in)
1963	119.6 mm (4.7 in)
1964	108.2 mm (4.3 in)
1965	72.4 mm (2.9 in)
1966	93.7 mm (3.7 in)
1967	145.1 mm (5.7 in)
1968	56.1 mm (2.2 in)
1969	18.5 mm (0.7 in)
1970	60.7 mm (2.4 in)
1971	66.5 mm (2.6 in)
1972	124.9 mm (4.9 in)
1973	118.9 mm (4.7 in)
1974	40.9 mm (1.6 in)
1975	151.1 mm (5.9 in)
1976	36.6 mm (1.4 in)
1977	64.0 mm (2.5 in)
1978	137.7 mm (5.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Dunnigan, 1906 to 1978. The record is 190 days in 1969, marked on the chart; the median year is 103 days.

Longest dry spell (CDD) at Dunnigan by year
Year	Longest dry spell (CDD)
1906	99 days
1907	47 days
1908	50 days
1909	47 days
1910	81 days
1911	100 days
1912	50 days
1913	100 days
1914	42 days
1915	38 days
1916	22 days
1917	26 days
1918	1 day
1939	127 days
1940	108 days
1941	49 days
1942	138 days
1943	130 days
1944	126 days
1945	122 days
1946	67 days
1947	121 days
1948	103 days
1949	113 days
1950	93 days
1951	158 days
1952	73 days
1953	83 days
1954	77 days
1955	128 days
1956	91 days
1957	128 days
1958	102 days
1959	144 days
1960	133 days
1961	106 days
1962	134 days
1963	124 days
1964	91 days
1965	113 days
1966	108 days
1967	121 days
1968	19 days
1969	190 days
1970	110 days
1971	123 days
1972	107 days
1973	118 days
1974	53 days
1975	48 days
1976	67 days
1977	113 days
1978	131 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.

Rainfall Return Levels

36 years, 1911 to 1978

A day with at least 47.4 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 108.4 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Dunnigan: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	47.4 mm (1.9 in)
5 years	65.5 mm (2.6 in)
10 years	76.8 mm (3.0 in)
25 years	90.1 mm (3.5 in)
50 years	99.5 mm (3.9 in)	Longer than the 36 years of record
100 years	108.4 mm (4.3 in)	Longer than the 36 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, 36 years of values from 1911 to 1978.

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: 93.7 mm (3.7 in) in 1962; 85.9 mm (3.4 in) in 1967; 83.8 mm (3.3 in) in 1911.

Download the Data

Data for Dunnigan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Dunnigan 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.

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