PETALUMA AIRPORT, CA

Average of Minimum Temperature (Degrees Fahrenheit)

(046826)

File last updated on April 24, 2024
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.

YEAR(S)	JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC		ANN
1893	-----	z	-----	z	46.74		-----	z	-----	z	-----	z	-----	z	-----	z	60.00	x	-----	z	-----	z	-----	z	46.74	k
1894	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1895	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1896	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1897	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1898	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1899	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1900	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1901	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1902	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1903	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1904	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1905	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1906	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1907	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1908	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1909	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1910	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1911	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1912	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1913	-----	z	36.29		36.42		40.07		43.90		48.87		50.84		52.42		48.87		43.35		43.80		37.81		43.88	a
1914	41.84		38.61		42.35		44.33		47.16		46.80		49.97		49.26		46.83		45.23		34.93		34.87		43.52
1915	37.74		42.93	a	42.35		45.33		45.55		46.07		49.77		48.94		45.70		41.71		38.60		36.58		43.44
1916	36.74		43.52		39.87		40.73		41.77		45.53		47.97		48.84		48.37		43.68		33.27		32.16		41.87
1917	31.42		36.21		35.29		39.33		41.06		44.17		48.23		50.74		48.30		44.06		40.33		37.87		41.42
1918	36.00		37.07		38.26		39.10		39.94		46.50		47.84		48.52		51.50		45.77		37.53		31.23		41.60
1919	32.65		37.85	a	38.52		41.80		44.48		43.80		46.61		49.06		48.17		37.71		33.37		35.00		40.75
1920	34.23		35.21		39.48		51.07		51.74		53.27		53.41	b	53.13		51.13		47.81		45.38	a	43.20	a	46.59
1921	35.00		45.82		50.81		50.83	a	51.61		57.67		53.45		53.45		53.73		55.63	a	45.90		46.90		50.07
1922	41.24	b	47.69	b	49.19	d	49.73		48.65		49.75	b	51.97		47.58		49.13		46.23		36.50		39.13		46.40
1923	35.65		35.14		38.58		42.80		43.70	a	46.20		47.71		50.45		50.90		48.90		48.20		42.19		44.20
1924	38.45	b	44.90		40.16		45.10		49.19		49.33		48.13		48.84		45.23		44.90	a	40.53		36.50	a	44.27
1925	38.32		39.64		35.19		39.43		44.61		43.70		48.00		48.68		49.63		44.68		39.53		37.48		42.41
1926	35.23		42.89		41.97		49.00		45.61		47.13		47.77		49.13		45.33		47.16		42.60		27.16		43.42
1927	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	49.29	p	45.97		44.10	a	35.74		41.94	i
1928	39.71		40.21		45.65		51.08	f	48.90		49.17		49.26		49.23		48.60		44.32		39.20		34.81		44.46	a
1929	34.03		34.25		39.45		40.37		43.26		49.80		51.58		55.74		46.13		56.52		40.03		50.90		45.17
1930	41.00		46.04		49.13		47.63		39.26		45.53		49.84		51.32		50.57		44.65		37.13		31.81		44.49
1931	37.77		43.96		41.94		42.87		49.84		51.10		51.10		49.84		49.50		45.68		39.00		36.00		44.88
1932	33.71		36.90		43.06		39.80		45.16		48.70		48.84		48.48		49.23		44.68		40.97		30.29		42.49
1933	32.35		33.39		41.23		40.17		40.74		46.37		47.58		49.26		48.53		47.00		36.10		38.06		41.73
1934	39.71		42.11		43.90		44.13		47.19		48.90		46.90		50.74		46.60		44.48		43.60		36.94		44.60
1935	35.65		39.21		35.48		44.27		44.65		46.77		46.81		46.26		49.03		43.16		36.03		33.87		41.77
1936	39.29		39.69		40.13		42.93		46.87		50.43		49.06		47.81		47.03		45.97		35.57		33.55		43.19
1937	29.29		36.54		41.16		39.93		43.77		50.97		51.97		47.61		48.73		47.61		41.70		37.42		43.06
1938	36.26		38.93		40.68		42.43		46.81		49.13		53.06		50.58		51.23		47.48		36.17		40.68		44.45
1939	36.84		35.96		41.81		44.17	a	46.65		48.60		51.00		51.29		51.83		45.90		38.83		40.45		44.44
1940	41.35		45.03		44.65		45.03		47.68		51.10	a	51.00		52.48		53.10		48.03		39.77		41.35		46.72
1941	42.23		45.43		44.48		43.70		50.77		49.73		53.58		52.19		50.17		45.58		43.37		41.61		46.90
1942	41.19		40.21		38.55		45.10		46.06		49.07		53.81		52.97		51.60		47.45		42.20		40.90		45.76
1943	37.00	a	39.93		44.65		44.55	a	46.90	a	48.77		52.33	a	51.43	a	53.40		47.84		42.03		39.29		45.68
1944	38.26		39.83		40.65		43.63		46.57	a	50.83		52.06		50.23		49.90		49.26		42.30		41.26		45.40
1945	37.42		41.21		38.61		42.73		47.93	a	52.28	a	54.45		51.84		51.57		50.71		44.10		40.48		46.11
1946	37.32		36.29		41.87		42.47		47.58		50.80		53.35		51.84		50.03		43.73	a	40.90		39.87		44.67
1947	32.26		42.73	b	44.77		45.47	o	49.57	c	53.63		52.39		54.00	a	50.00		50.65		40.07		38.58		46.24	a
1948	36.16		36.97		37.94		42.80		44.60	a	51.00		51.71		51.77		48.93		46.13		38.63		34.87		43.46
1949	29.90		40.61		47.61		43.20		49.52		51.23		50.21	b	51.38	b	52.33		44.74		44.07		36.23		45.09
1950	36.19		39.64		40.90		43.33		46.13		50.17		52.06		51.74		52.70		49.77		49.23		46.23		46.51
1951	40.52		40.68		39.84		45.60		46.90		50.63		50.71		52.61		52.07		48.42		45.27		38.77		46.00
1952	37.71		41.66		41.16		45.23		45.81		50.03		53.81		51.03		52.50		48.94		38.53		43.74		45.85
1953	44.87		39.50		40.16		42.53		44.48		48.53		50.10		53.03		55.00		47.13		45.41	h	38.54	e	45.81	a
1954	39.48	d	38.39		38.29		43.87		44.61		47.90		50.55		50.20	a	47.50		45.10		43.90		38.26		44.00
1955	34.84		34.86		35.55		38.37		43.77	a	48.37		49.77		47.45		47.77		46.29		40.10		43.90		42.59
1956	42.42		36.24		38.58		41.37		46.32		47.43		51.03		50.58		50.40		44.71		36.40		30.35		42.99
1957	32.61		43.07		43.58		43.50		48.10		49.77		51.19		48.94		53.60		48.90		38.63		38.84		45.06
1958	37.23		46.18		37.90		42.97		47.52		53.40		54.06		53.83	a	51.50		48.03		40.83		38.35		45.98
1959	41.06		37.79		39.87	a	42.67	c	45.68		50.00		52.10		51.74		51.50		48.80	a	36.80		33.81		44.32
1960	38.71		40.31		44.06		42.80		45.13		52.30		50.32		49.13		49.27		47.42		41.67		38.50	a	44.97
1961	37.83	a	41.18		40.06		39.80		44.48		50.33		51.10		53.87		50.70		47.68		39.83		37.68		44.55
1962	32.90		40.50		38.81		41.93		43.55		47.80		49.00		51.35		49.17		49.13	a	43.50		39.77		43.95
1963	31.42		46.61		38.29		41.73		47.68		49.30		50.52		49.74		52.23		48.84		42.50		35.90		44.56
1964	34.47	a	34.45		37.13		39.93		43.48		48.23		50.06		50.42		49.00		48.19		41.50		42.97		43.32
1965	39.84		37.50		40.81		45.10		42.87	a	48.70		50.55		53.19		49.77		47.77		46.60		34.16		44.74
1966	37.00		37.54		41.13		43.73		46.48		50.00		49.87		51.23		52.17		45.74		44.47		40.61		45.00
1967	37.74		37.64		40.65		38.30		45.06		49.73		51.10		50.81		54.00		46.71		43.87		34.57	a	44.18
1968	34.65		46.21		42.61		41.87		45.90		50.67		51.13		54.26		52.67		46.13		43.83		37.90		45.65
1969	38.00		39.46		39.19		41.90		49.39		53.57		51.32		49.65		52.52	a	48.42		38.80		42.55		45.40
1970	43.84		41.75		42.77		39.37		46.74		51.03		50.87		50.81		47.77		46.35		47.03		38.16		45.54
1971	37.48		38.14		39.26		41.27		46.81		49.03		51.23		53.52		51.83		42.55		39.93		36.06		43.93
1972	33.68		42.21		44.39		42.80		45.94		49.37		53.87		53.55		51.83		51.19		42.83		35.39		45.59
1973	38.52		43.61		40.61		43.90		47.23		51.40		52.45		50.29		52.57		46.26		46.53		42.97		46.36
1974	39.94		38.64		45.13		43.03		44.81		51.20		53.23		53.74		52.63		47.74		41.67		38.55		45.86
1975	34.55		40.93		43.16		39.90		46.48		50.63		51.77		51.87		51.13		46.84		38.97		37.68		44.49
1976	33.10		40.00		38.16		41.40		46.97		51.00		53.10		54.16		52.73		47.06		44.87		31.42		44.50
1977	35.13		39.54		38.03		43.07		45.32		51.40		51.13		54.81		52.20		47.19		42.40		42.07	a	45.19
1978	44.14	b	43.68		47.03	a	44.67		48.23		51.07		51.26		51.55		51.20		47.23		38.03	a	31.58		45.80
1979	37.26		38.52	a	43.84		44.62	a	48.71		48.27		53.03		51.77		53.66	a	50.00		41.87		37.10		45.72
1980	40.03		43.90		40.27	a	43.80		45.71		49.30		52.45		51.93	a	51.57		46.00		39.07		36.81		45.07
1981	40.90		41.59	a	41.74		43.28	a	47.39		53.70		50.42		51.77		50.33		43.68		44.30		41.74		45.90
1982	33.10		39.04	a	39.03		44.19	d	44.50	a	47.83	a	48.84		48.84		48.48	a	43.93	a	37.38	a	34.37	a	42.46
1983	-----	z	42.69	b	42.70	a	40.48	a	44.74		47.77		51.19		53.61		52.82	b	49.32		43.10		43.97	a	46.58	a
1984	38.10		37.66		42.87		41.40		48.25	c	47.90		53.45	b	51.50	a	49.52	a	45.31	b	41.15	d	35.77	a	44.41
1985	34.26	d	36.04	b	38.87	a	44.97		43.45		50.73		52.00		49.90		49.14	a	45.54	c	36.77	d	34.38	e	43.00
1986	43.53	a	44.04	a	45.52	b	43.17		45.73	a	52.27		50.13		51.39		47.90	a	47.17	a	39.81	c	38.14	b	45.73
1987	36.50	a	40.23	b	40.90	a	44.90		50.16		51.77		51.48		54.13	a	51.93	a	51.50	a	42.31	d	39.90	b	46.31
1988	38.83	b	37.82	a	41.76	b	44.46	b	46.00		50.53		53.87		53.55		49.15	c	49.07	a	44.41	a	36.65		45.51
1989	33.72	b	35.00	f	44.37	a	47.44	c	47.19		51.83		50.10		52.42		52.60		46.36	c	39.86	a	33.90	a	45.44	a
1990	36.03	a	35.86		42.57	a	47.69	a	47.35		50.80		54.32		-----	z	52.33		-----	z	-----	z	-----	z	45.87	d
1991	35.71		43.00	d	41.19		42.47		45.43	a	48.70		52.60	p	-----	z	-----	z	-----	z	-----	z	-----	z	42.75	f
1992	35.80	a	42.90		45.20	a	45.86	b	49.90	a	52.40		54.29		52.48		51.25	b	50.03	b	40.96	d	35.83	b	46.41
1993	36.22	d	38.96	c	44.86	c	44.31	a	48.53	a	50.97		51.71		52.84		49.00	a	48.27	a	36.31	a	35.16	f	45.63	a
1994	37.00	a	37.00	b	41.90	b	43.21	a	47.10	a	48.37		50.45		49.81		51.53		44.69	b	37.07	a	35.50	c	43.64
1995	47.43	a	44.69	b	41.97	b	44.04	c	47.97		50.77		54.07	a	51.77		51.63		46.37	a	44.37		43.11	c	47.35
1996	39.72	b	45.73	c	42.83	a	43.93	b	48.03		48.89	c	51.87	a	51.00	a	49.52	c	46.55	b	44.78	c	42.46	e	46.28
1997	42.23	a	40.08	d	42.06		45.43		50.23		51.57		53.84		55.74		54.33		48.39		47.13		40.10		47.59
1998	45.33	a	43.71		40.03	a	37.48	i	48.24	n	53.13		51.97		51.55		52.33	l	46.55		43.76	a	34.87		45.66	c
1999	38.41	d	39.79		40.68		43.57		45.65		-----	z	52.68		54.00		52.50		48.13		45.77		35.68		45.17	a
2000	41.94		45.34		-----	z	47.00		48.83	g	52.20		51.68		52.48		52.60		48.83	a	40.37		38.42		47.09	b
2001	35.48		-----	z	43.71		41.70		49.16		51.33		52.84		52.64	c	51.00	a	49.16		44.63		42.61		46.75	a
2002	36.83	a	39.93		39.81		44.83		45.29		50.50		52.84		52.39		50.33		46.29		43.97	a	41.43	a	45.37
2003	44.84		38.68		43.39		41.47		46.77		51.20		51.90		54.26		52.97		47.23		41.07		42.35		46.34
2004	41.16		39.79		44.84		45.40		48.16		51.17		53.81		55.52		51.83		48.16		42.03		39.94		46.82
2005	39.16		43.75		44.55		42.73		49.77		51.10		52.92	f	51.97		49.67		47.55		42.33		42.16		45.89	a
2006	41.19		39.11	a	40.94		46.50		47.77		52.60		53.50	a	51.71		50.83		46.19		43.10		36.94		45.87
2007	33.10		40.75		42.77	a	43.33		47.55		49.63		53.93	b	53.13	a	51.70		46.71		40.63		37.13		45.03
2008	38.71		39.00	a	39.13		40.31	a	48.35		49.30		52.65		53.48		50.90		46.90		45.40		35.13	a	44.94
2009	35.26		39.79		41.61		40.90		48.26		50.97		51.16		52.97		51.87		48.23	a	38.90		38.10	a	44.83
2010	42.10	b	42.61		40.84		41.30		44.93	b	50.40		50.72	m	51.77		50.13		49.62	b	41.60		42.97		45.30	a
2011	36.80	a	35.50		42.97	a	44.23		44.43	a	49.87		52.52		51.52		51.33		47.35		39.30		34.23		44.17
2012	35.16		38.97		40.10		44.93		45.00		49.40		51.42		50.87		48.27		50.13		44.97		38.42		44.80
2013	33.00		33.86		40.68		46.10		47.61		52.00		52.65		53.90		52.13		43.61		40.87		29.35		43.81
2014	34.13	a	43.18		44.90		45.53		48.10	a	49.57		55.23		56.35		55.70		49.84		45.69	a	46.94		47.93
2015	37.81		41.25		42.87		43.20		47.68		50.83		56.39		56.94		51.67		52.42		39.20		39.52		46.65
2016	45.39		42.14		44.55		46.83		49.35		50.40		50.55		52.45		51.30		49.42		44.93		36.58		46.99
2017	37.48		42.21		43.26		44.30		48.65		51.27		51.94		54.97		55.27		46.42		45.57		33.16		46.21
2018	41.84		35.64		38.58		43.00		47.84		49.03		53.65		52.42		49.13		49.42		40.70		41.26		45.21
2019	42.00		39.61		43.80	a	48.83		49.26		51.77		52.16		55.17	a	53.38	d	44.35		42.89	c	43.32		47.21
2020	39.13		38.38		39.45		45.10		47.52	b	52.13		52.48		54.61		55.10		50.10	b	39.15	d	36.57	a	45.81
2021	39.61		39.11	a	38.71		43.07		47.81		51.87		52.61		54.16		52.60		48.48	b	43.97		40.43	a	46.04
2022	38.97		35.36		41.73	a	42.74	c	45.96	d	52.07		53.14	c	54.90		54.72	a	48.32		35.53		38.39		45.15
2023	40.48		36.04		41.90	b	42.70		49.10		51.77		52.58		56.55		53.87		48.16		42.27		43.52		46.58
2024	43.94		43.45		44.52		44.52	g	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	43.97	i
Period of Record Statistics
MEAN	37.79		40.13		41.57		43.42		46.55		49.96		51.46		51.79		50.82		47.14		41.33		38.16		44.93
S.D.	3.62		3.27		2.94		2.51		2.35		2.20		1.96		2.18		2.23		2.56		3.31		4.04		1.59
SKEW	0.19		0.14		0.37		0.52		-0.50		-0.30		-0.39		-0.02		-0.28		0.24		-0.16		0.10		-0.18
MAX	47.43		47.69		50.81		51.07		51.74		57.67		56.39		56.94		55.70		56.52		49.23		50.90		50.07
MIN	29.29		33.39		35.19		38.30		39.26		43.70		46.61		46.26		45.23		37.71		33.27		27.16		40.75
YRS	109		109		111		107		108		109		107		108		108		109		108		108		95