Historical Climate Data

Temperature Summary
Station: 478672 TWO RIVERS, WI
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	25.1	28.3	37.3	47.5	58.7	68.4	74.4	73.6	66.4	54.5	41.4	30.0	50.5
Min °F	10.1	14.0	24.0	34.9	44.8	53.5	60.0	60.2	52.7	41.1	29.0	16.9	36.8
Mean °F	17.6	21.2	30.7	41.2	51.8	61.0	67.2	66.9	59.6	47.8	35.2	23.5	43.6
HDD base 65	1469	1229	1066	715	413	151	36	53	184	532	895	1288	8031
CDD base 65	0	0	0	0	1	29	103	112	21	0	0	0	266

Temperature Extremes
Period of Record: 1950-2001

Month	High Mean°F	Year	Low Mean°F	Year	1-Day Max°F	Date	1-Day Min°F	Date
JAN	28.6	1990	7.6	1977	52	01-25-1973	-28	01-30-1951
FEB	32.3	1998	13.9	1979	57	02-23-1984	-26	02-03-1996
MAR	38.7	2000	25.5	1996	71	03-07-1987	-17	03-01-1962
APR	48.3	1955	38.0	1975	84	04-26-1962	9	04-03-1954
MAY	55.9	1977	47.3	1997	91	05-04-1952	24	05-02-1990
JUN	66.6	1987	55.3	1969	97	06-26-1964	35	06-02-1956
JUL	70.9	1955	62.0	1978	97	07-01-1970	40	07-06-1965
AUG	73.4	1955	62.5	1992	97	08-09-2001	42	08-23-1952
SEP	63.3	1998	54.3	1993	96	09-01-1953	29	09-20-1956
OCT	56.9	1963	44.2	1988	86	10-06-1963	19	10-19-1972
NOV	43.3	2001	28.6	1995	76	11-01-1950	-8	11-24-1950
DEC	32.0	1965	13.2	1989	62	12-03-1998	-21	12-24-1983

Annual	47.8	1998	41.9	1996	97	06-26-1964	-28	01-30-1951
Winter	29.1	1983	15.0	1977	62	12-03-1998	-28	01-30-1951
Spring	45.8	1977	37.7	1996	91	05-04-1952	-17	03-01-1962
Summer	68.6	1955	61.2	1978	97	06-26-1964	35	06-02-1956
Fall	53.0	1963	41.1	1951	96	09-01-1953	-8	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	20.3	29.9	7.1
FEB	0.0	15.4	26.6	3.6
MAR	0.0	6.2	24.1	0.5
APR	0.0	0.4	10.2	0.0
MAY	0.0	0.0	0.9	0.0
JUN	0.4	0.0	0.0	0.0
JUL	0.8	0.0	0.0	0.0
AUG	0.4	0.0	0.0	0.0
SEP	0.0	0.0	0.3	0.0
OCT	0.0	0.0	4.1	0.0
NOV	0.0	3.2	18.6	0.1
DEC	0.0	14.4	27.8	3.5

Annual	1.6	60.0	142.4	14.9
Winter	0.0	50.1	84.3	14.2
Spring	0.0	6.6	35.2	0.5
Summer	1.5	0.0	0.0	0.0
Fall	0.0	3.2	22.7	0.1