SUPERIOR, WI

Average of Minimum Temperature (Degrees Fahrenheit)

(478349)

File last updated on March 28, 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)JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECANN
1909-----z-----z-----z27.20t35.26 47.90a54.18c57.87 46.32b36.07b26.89b6.88f43.50e
19105.71c-0.85b26.75c32.83 37.65 51.75b57.32 56.27a47.63 38.97a20.86b4.06 31.58
1911-4.87 9.27b19.21b29.57 40.52 49.38a53.89d52.29 45.34a35.23a16.37k15.03a31.35a
1912-16.04e-0.96b7.47a29.24a37.74 47.52a52.87a52.58 47.23d38.00d24.67f11.00j29.56b
1913-2.70a-2.89 6.42 30.50b35.34b47.27 51.93a54.72f46.24a35.57h26.97a20.00b25.91b
191412.17g-8.21 14.52b26.67 42.58 47.14a55.48 54.37a48.63 39.87 23.57 3.19 31.62a
19152.16 13.32 17.06 34.87 37.06 43.54d50.70a51.13 47.53 37.77 24.57b12.70a31.04
1916-5.00 -1.90 9.45 29.77 37.58 44.63 57.00b56.00 44.10 34.52 22.48a0.13 27.40
1917-6.65 -8.82 13.35 26.50 34.45 41.33 54.00 50.29 45.33 28.65 28.31a-2.52 25.35
1918-5.87 -0.56a21.13a26.87 37.52 47.03 53.35 55.23 40.67 37.16 28.47 19.71 30.06
191911.10 6.82 16.10 31.40 40.74 48.24a57.71 55.93a46.54f31.60a16.04c0.86b28.78a
1920-4.52 5.55 16.55 24.80 39.74 48.47 54.55 55.26 50.73 41.58 23.07a16.00b30.98
192110.61 10.71 17.19 33.20 40.45 52.53 62.87 55.57a49.90 38.13 18.33 10.31b33.32
19220.97 -0.96 17.61 30.87 40.90 47.90 53.81 56.93a49.30 38.42 31.43b4.77a31.00
19234.90 -4.36 5.00 27.84e39.03 49.70 55.97 52.65 49.70 36.81 28.33 18.48 30.34
1924-8.26 10.86 19.16 28.97 37.03 46.23 53.03 53.07a46.20 43.00 22.03 -2.26 29.09
19253.07a8.82 17.48 34.17 39.13 49.60 57.23a59.19 50.76a30.41b20.69a8.42 31.58
19263.00e9.82 12.81 28.03 39.83b47.83 52.67a57.77 46.13 36.16 19.40 3.82c29.77
19272.30a8.00 24.35 32.40 37.94 47.40 54.23 52.03 51.13 38.58 21.20 -1.61 30.66
19285.23 7.34 17.10 27.13 42.97 46.93 55.00 56.71 46.67 38.16 29.07 16.37a32.39
1929-9.70a-1.43 20.97 32.37 37.68 48.30 57.65 57.32 47.10 38.39 19.80 8.06 29.71
1930-4.19 12.61 16.68 32.30 39.81 53.27 56.65 58.84 47.43 35.19 23.90a13.35 32.15
193113.37a17.71 21.74 33.10a39.94 48.77 58.68 56.53a52.03 43.58 30.20 22.29 36.50
193213.55b3.86 9.47a30.30 40.28b50.34a56.81 59.10 47.83 35.87 19.93 5.77a31.09
19339.00a-0.88b17.48 30.53 40.52 52.63 57.16 56.29 51.97 34.00 19.43 2.97 30.93
19349.00 0.68 13.33a30.97 42.58 47.73 56.52 53.55 46.73 41.52 29.50 5.21b31.44
1935-3.35 14.50 19.58 29.80 39.81 47.90 59.48 58.39 45.10 37.19 19.00 11.03 31.54
1936-3.23 -10.34 19.13 26.43 40.81 48.93 60.81 60.32 51.47 32.52 19.24a11.83b29.83
1937-6.29 3.46 16.26 32.00 41.03 50.40 57.68 61.87 48.14a35.77 23.63 6.61 30.88
19383.45 10.93 24.68 31.07 40.29 51.27 56.60a60.45 50.40 42.03 22.93 10.74 33.74
19399.10 -1.36c15.74 28.80 40.19 46.77 58.03 59.23 49.60 37.55 27.97 21.57a32.76
19401.03 13.62 15.19 29.93 38.90 48.23 57.57a58.16 52.93 43.45 23.90 12.48 32.95
19418.87 7.79 17.71 35.67 43.81 50.57 61.19 58.84 51.67 39.87 27.63 18.61 35.19
194210.23 10.61 26.81 34.77 40.26 49.10 56.06 57.65 47.53 39.03 22.20 6.65 33.41
1943-1.68 5.86 9.58 30.27 40.29 48.37 59.90 59.03 44.77 39.29 22.27 11.87 30.82
194416.77 7.38 16.19 30.10 42.16 48.60 58.13 58.61 50.60 39.26 33.21a10.23 34.27
19455.68 7.39 25.94 31.17 38.58 48.30 57.26 58.74 47.33 36.90 24.93 8.42 32.55
19466.80a3.00 27.84 34.40 39.87 48.27 58.16 56.58 47.87 39.48 23.50 13.24j35.07a
19473.72f1.92c15.29c29.28a37.44d44.67 54.32 56.65 48.40e43.68 18.69a10.40a32.79a
1948-3.79c2.00a15.86b31.07a37.90 48.27 54.20a53.61 47.20 33.32 26.60 8.39 29.55
19496.42 0.61 16.06 31.07 38.48 50.55a56.39 56.55 42.37 36.81 27.07 7.61 30.83
1950-8.42 3.29 9.13 24.40 34.00 43.30 47.68 44.55 42.27 35.19 16.17 0.03 24.30
1951-3.23 6.57 12.07a29.07 40.84 45.57 51.81 50.55 42.97 34.97 13.72a6.06 27.58
1952-1.65 12.32a14.29 30.57 37.00d47.97 55.28b52.42 45.27 29.68 24.73 17.61 30.46
19535.29 6.04a18.87 28.80 36.58 47.57 52.55 56.87 45.27 37.13 25.87 10.42 30.94
1954-2.45 18.39 15.94 29.17 36.19 47.77 54.23 52.32 47.10 34.84 27.33 14.77 31.30
19551.85d1.21 6.35 32.50 36.35 47.67 57.93a57.52 45.37 36.55 15.67 2.61 28.47
19563.03 0.31 10.90 26.11b35.00 45.87 48.32 50.26 41.23 37.39 23.07 9.58 27.59
1957-6.03 0.56a10.35 27.10 35.84 43.67 53.52 52.63a42.77 32.48 25.40 11.29 27.46
19589.10 -0.75 17.35 27.31a34.87a40.40 50.55 49.55 46.93 36.32 23.47 -1.23 27.82
1959-7.87 -0.79 15.35 27.63 38.42 47.10 52.13a55.55 47.17 34.84 13.77 19.06 28.53
19603.29 3.17 4.74 29.67 35.00 43.77 50.77 55.84 46.23 34.32 26.73 6.68 28.35
1961-0.19 10.14 22.35 26.43 33.61 44.30 52.06 53.19 44.73 36.35 23.80 7.84 29.55
1962-3.81 2.04a16.31b25.00 37.58 42.53 49.23 49.74 43.40 37.16 28.03 7.71 27.91
1963-6.77a-3.25 17.00 26.57 35.74 43.27 54.48 49.94 45.70 40.58 26.53 2.52 27.69
19647.90 5.62 11.84 27.20 39.06 43.03 50.61 49.68 -----z35.81 24.40 1.74 26.99a
1965-5.68 -3.75 6.61 28.73 37.53a42.03 47.19 49.16 41.27 35.90 22.10 16.90 26.50
1966-10.29 -----z18.55 26.73 33.10 44.47 53.23 52.00 42.40 32.38b18.53 6.53a28.88a
19672.48 -7.38b16.40a27.23 32.23 -----z-----z51.55t47.00 37.42 22.23 11.84 21.05c
19683.55 2.83 23.68 32.67 39.00 46.60 53.83a-----z49.17 40.65 26.93 9.55 29.86a
19692.74 8.46 15.71 31.50 40.19 44.43 53.45 57.80a49.47 34.58 24.31a14.68 31.44
1970-4.35 -0.23b-----z30.73 38.94 48.41a58.52 56.58 46.30 37.87 24.00 6.13 31.17a
1971-5.39 2.78a16.55 30.20 37.71 48.37 52.16 52.94 47.47 41.47a26.03a8.26 29.88
1972-8.83a-2.34 10.71 27.33 38.19 44.97 51.73a53.52 44.23 32.65 26.20 2.87 26.77
19734.03 7.57 27.23 30.40 38.19 48.13 56.16 57.45 46.53 41.45 24.73 7.45 32.44
1974-0.10 -0.25l15.73a28.93 37.39 48.50 56.73a53.58 41.17 33.58 26.30 16.07a32.53a
19753.87 6.07 11.37a27.66a42.48 48.48a60.42 55.70a45.50 38.35 26.20 6.29 31.03
1976-2.90 12.79 -----z33.67 40.48 51.60 56.90a54.82c44.59a30.23 16.17 -5.83b30.23a
1977-9.63a8.48a23.19 31.10 41.65 46.75b53.39 48.27a44.40 34.14b19.66a5.07a28.87
1978-4.79b-0.78a13.13 27.70 37.74 48.23 54.17a54.10 48.97a36.52 19.07 0.93a27.91
1979-9.13 -6.57 14.77a26.86a36.35 45.93 54.26 53.16 47.97 35.07a23.50 13.45 27.97
19801.45 3.90 12.77 30.87 41.26 46.73 55.74 54.52 45.23 32.35 22.63 4.29 29.31
19812.61 8.32 19.71 29.20 34.77 44.40 55.23 59.03 47.93a36.03 29.57 10.61 31.45
1982-11.23 5.46d16.10 27.75b40.27a45.32b54.97a52.39 46.97 37.93a19.10a13.60a29.05
19837.10a16.70a21.00 27.10a36.55b45.55a57.00a61.10 46.83 37.16 25.07b-7.40a31.15
1984-0.86c16.79 12.55 29.80 38.10 45.15d54.34b57.00 43.21b35.73a19.68b3.43c29.58
1985-0.70a5.27b25.43a31.93b41.78d46.38a54.66b52.35 44.04c33.77a15.97a-5.92e28.75
19864.07a2.79 17.86b29.62d39.23 49.03 56.71 55.16 47.83 37.87a19.60 14.33a31.17
19878.77 18.71 25.19 34.23 42.00 51.21a59.90b57.30a50.77 33.16 26.60 18.00b35.49
1988-1.10 -0.45 20.33a30.11c41.32 52.66a59.80a58.13a49.34a33.32 27.40 8.33a31.60
19897.35 -5.15a13.52 29.89b39.45 46.93 58.74 57.90 47.70 35.45 19.30 -1.23a29.16
199012.71 7.89a21.06 30.43 38.40a49.63 -----z57.06 50.73 34.60a25.80 7.81 30.56a
1991-0.35 12.67a19.77 32.27 41.39 49.43 56.77 59.84 48.21b35.65 17.03 10.07a31.90
199210.52 17.24 21.06 30.70 40.68 47.67 52.29 54.03 46.20 35.94 24.73 11.58 32.72
19935.97 8.61 19.87 31.00 40.33a46.67 54.48 57.57a41.64b32.39 20.38a13.35 31.02
1994-8.10 -1.04a22.74 30.83 39.97b50.43 56.39 54.58 51.43 41.10a27.90 14.97a31.77
19959.27a4.75 21.83a27.43b40.58 48.97a54.13 59.84 46.90 38.48 16.47 6.48b31.26
1996-5.97a2.46a13.17a26.69a37.43a-----z53.77a57.35 52.40 37.06 18.80 7.29 27.31a
19972.35 7.50 17.94 28.58d38.35 50.73 56.16 56.00 51.97a38.76b24.00c21.55 32.82
199814.45b25.96b23.10 35.83 45.23a50.91g59.78h61.97 54.18b43.00a31.37 15.32 35.04b
19992.13 16.00a23.06 33.33 42.89c50.87 59.77a57.55b49.40y34.71q29.89c15.13 33.06b
20005.90 16.52 26.97 32.27 42.29 47.45a57.23 60.48 48.47 40.68 28.10 1.54c33.99
200112.33a2.21 20.32 32.93 42.87 49.13 57.63a59.68 50.10 38.32 35.07b20.03 35.05
200213.13 17.33a14.71 31.00a38.55 49.66a61.50a57.34b51.07 33.84 23.53 17.90 34.13
20035.47a1.62b16.03b30.79b39.90 48.47 58.19 57.96g49.80 38.48 24.00a16.60a29.94a
2004-2.20a11.32a24.79b32.31a39.13a47.21a56.33a52.93d52.60 41.57a29.93 9.97 32.99
20052.81 16.18 18.29 34.69a40.45 50.37 59.50a54.14b52.63 41.77 27.73 17.23a34.65
200620.97 9.15a26.23 36.50 44.65 53.63 63.32 60.67a49.59a34.26 28.43 21.32 37.39
200711.87a5.52a22.87 -----z42.10 51.40 59.00 -----z50.80 43.10 27.20 9.63a32.35b
2008-----z-----z17.61 32.00 39.97 50.87 55.84 57.74 -----z40.65 25.87 2.97a35.95c
2009-4.97 4.71 18.58 33.41a41.06 48.72a56.23r53.94 54.30 36.90 33.31a11.10 30.10a
20107.10 11.11 29.06 37.29b44.00 52.40 62.63d60.19 47.10 40.13 27.04b10.57a35.72
20113.65 9.00 20.16 33.23 39.10 47.33c60.19 60.03 48.57 41.13 28.03 18.03 34.04
201215.23e19.62 30.74 34.87 43.39 50.93 60.19 58.03a45.77 35.87a25.52a11.71 35.99
20134.00 8.63a12.93b27.14a36.90a46.80 55.29 58.00 50.30 40.19 21.87 1.00 30.25
2014-5.32 -3.93n14.81j28.30 38.39 46.77 55.39 57.94 55.80y-----z12.10i18.32 34.25e
20158.33a-0.59a21.68 33.23 40.13 46.07p61.71 57.00b54.45a40.53a32.07 25.19 33.98a
20168.81 13.68a27.00 31.77d41.70a51.90 59.97a61.55 54.48a42.42 34.83 12.94 36.75
201711.74 17.89a19.74 33.87 41.93b48.59a55.65 57.03 52.80 41.65 22.37 7.17a34.20
20183.77a3.11 20.87a24.70c41.93a49.43 59.52 59.61 52.97 36.48 19.80 17.39 32.46
20192.48 3.68 16.87 32.47 38.48 48.23 60.84 57.94 49.60 38.00 22.67 12.90 32.01
202013.52 9.24 26.03 30.60 41.68 52.77 61.52 60.55 47.83 34.61 28.53 15.71 35.22
202113.84 2.93 27.58 34.00 42.35 56.23 60.84 61.94 53.40 46.32 25.97 14.00 36.62
2022-1.45 0.46 19.55 29.67 40.90 49.63 57.32 59.35 52.40 39.61 27.93 10.48 32.16
202314.45 10.39 18.32 30.87 41.06 50.33 57.52 59.74 57.57 43.10 27.33 27.52 36.52
202415.16 20.89a24.70d-----z-----z-----z-----z-----z-----z-----z-----z-----z20.25i
Period of Record Statistics
MEAN2.35 5.88 17.91 30.31 39.25 48.02 56.02 56.03 47.92 37.31 24.20 9.92 31.26
S.D.7.41 7.12 5.57 2.76 2.56 2.78 3.31 3.42 3.39 3.40 4.50 6.94 2.73
SKEW0.05 0.23 -0.09 0.10 -0.30 -0.12 -0.17 -0.60 0.12 0.03 -0.09 -0.09 0.10
MAX20.97 25.96 30.74 37.29 45.23 56.23 63.32 61.97 57.57 46.32 35.07 27.52 37.39
MIN-16.04 -10.34 4.74 24.40 32.23 40.40 47.19 44.55 40.67 28.65 13.72 -7.40 24.30
YRS112 111 112 113 115 111 111 110 110 112 112 112 90