Historical Climate Data

Temperature Summary
Station: 332098 DEFIANCE, OH
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	31.2	35.1	46.0	58.9	71.0	80.4	84.2	81.9	75.0	62.7	48.5	36.3	59.3
Min °F	17.1	19.6	28.6	38.4	49.4	59.2	63.3	61.1	53.7	42.4	33.3	23.2	40.8
Mean °F	24.2	27.4	37.3	48.7	60.2	69.8	73.8	71.5	64.4	52.6	40.9	29.8	50.1
HDD base 65	1265	1055	859	492	215	25	1	15	88	397	723	1094	6229
CDD base 65	0	0	0	2	66	170	272	216	68	11	0	0	805

Temperature Extremes
Period of Record: 1896-2001

Month	High Mean°F	Year	Low Mean°F	Year	1-Day Max°F	Date	1-Day Min°F	Date
JAN	35.3	1906	9.0	1977	69	01-21-1906	-26	01-13-1912
FEB	36.9	1998	11.8	1978	73	02-26-2000	-22	02-10-1912
MAR	48.9	1945	23.2	1960	85	03-24-1910	-7	03-08-1943
APR	54.5	1985	40.4	1907	89	04-30-1899	4	04-07-1982
MAY	69.1	1896	52.4	1907	99	05-28-1911	24	05-10-1966
JUN	74.9	1943	63.4	1972	104	06-26-1988	35	06-02-1910
JUL	78.8	1901	69.0	1947	106	07-14-1936	42	07-22-1911
AUG	77.9	1947	66.6	1963	102	08-10-1896	31	08-29-1948
SEP	69.4	1941	58.4	1975	100	09-14-1939	26	09-21-1897
OCT	60.7	1947	46.1	1980	92	10-15-1897	17	10-21-1952
NOV	48.0	1909	32.7	1951	82	11-01-1950	0	11-24-1950
DEC	37.7	1982	16.4	1989	70	12-03-1982	-19	12-22-1989

Annual	53.6	1998	46.7	1978	106	07-14-1936	-26	01-13-1912
Winter	33.9	1998	17.8	1977	73	02-26-1900	-26	01-13-1912
Spring	52.9	1977	43.0	1984	99	05-28-1911	-7	03-08-1943
Summer	74.9	1944	67.6	1992	106	07-14-1936	31	08-29-1948
Fall	56.3	1941	46.8	1976	100	09-14-1939	0	11-24-1950

Temperature Threshold Climatology
Derived from 1971-2000 Averages

*Annual/seasonal totals may differ from the sum of the monthly totals due to rounding.

Month	# Days Max ≥ 90°F	# Days Max ≤ 32°F	# Days Min ≤ 32°F	# Days Min ≤ 0°F
JAN	0.0	15.7	28.8	4.9
FEB	0.0	11.9	25.2	4.0
MAR	0.0	3.8	23.3	0.3
APR	0.0	0.1	10.3	0.0
MAY	0.8	0.0	0.8	0.0
JUN	3.9	0.0	0.0	0.0
JUL	6.7	0.0	0.0	0.0
AUG	3.7	0.0	0.0	0.0
SEP	1.3	0.0	0.1	0.0
OCT	0.0	0.0	5.4	0.0
NOV	0.0	1.4	18.1	0.0
DEC	0.0	10.3	26.8	1.8

Annual	16.4	43.4	138.8	11.2
Winter	0.0	38.0	80.8	10.8
Spring	0.8	3.9	34.3	0.3
Summer	14.3	0.0	0.0	0.0
Fall	1.3	1.4	23.2	0.0