IRONWOOD, MI

Average of Minimum Temperature (Degrees Fahrenheit)

(204104)

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
1901-----z-----z-----z-----z-----z-----z65.53p55.26 45.23 37.94 20.23 7.48 33.23g
19027.19 7.93 23.19 29.13 43.32 47.50 57.06 50.81 44.90 35.23 27.67 9.84 31.98
19034.35 3.89 21.68 30.53 41.90 47.73 54.23 50.16 45.67 36.48 20.17 2.35 29.93
1904-2.42 -6.52 12.35 24.77 39.94 51.00a52.78d51.39 45.17a36.47a27.30 8.84 28.42
19050.13 0.04 18.19 29.20 37.58 48.47 55.06 55.48 49.43 34.13 23.90 13.29 30.41
190611.61 4.71 8.77 34.37 39.71 52.00 55.77 55.81 52.27 35.81 25.03 11.35 32.27
1907-1.45 3.29 18.32 21.03 31.33a51.77 49.16 48.55 43.70 29.71 21.43 11.58 27.37
19082.48 3.69 21.46r30.83 40.71 50.83 55.84 52.74 51.10 39.90 25.47 9.81 33.04a
19095.26 7.29 15.77 24.00 38.45 52.23 54.65 58.06 45.63 35.06 27.50 10.39 31.19
19106.65 1.36 27.77 34.03 36.00 53.37 55.90 53.35 46.07 38.45 21.17 8.97 31.92
19111.74 11.11 20.74 31.10 44.94 56.40 55.81 52.65 46.00 34.48 15.20 17.39 32.30
1912-13.32 1.90 9.39 30.07 42.19 48.73 55.68 50.19 46.73 35.77 25.90 11.39 28.72
19131.39 -2.75 9.29 32.43 37.97 52.03 53.90 54.45 45.87 35.26 29.03 20.74 30.80
191411.03 -4.43 13.29 26.53 44.26 49.87 57.00 52.16 47.63 41.00 20.90 4.65 30.32
19153.48 15.25 15.71 39.47 38.45 46.70 51.32 48.19 46.17 36.65 24.80 12.00 31.52
1916-0.35 -0.62 9.61 29.37 39.68 45.50 62.65 54.74 44.47 35.00 21.37 1.81 28.60
1917-3.35 -6.39 14.35 26.00 35.55 44.50 55.68 49.42 44.90 28.13 25.87 -0.52 26.18
1918-5.71 0.86 20.94 27.03 41.58 49.33 53.35 53.29 38.37 35.45 26.27 20.26 30.08
191912.19 9.43 16.55 30.33 41.13 56.60 56.58 54.13 47.77 32.35 17.30 -0.84 31.13
1920-4.48 4.41 15.45 23.43 40.23 50.53 53.77 52.52 50.60 43.19 23.03 14.06 30.56
192111.35 10.89 17.68 34.33 43.29 55.97 60.52 52.65 50.17 38.19 18.63 11.03 33.73
19221.90 2.29 18.94 30.57 51.32 52.93 54.45 55.23 49.90 37.16 30.37 5.00 32.50
19237.48 -2.75 5.84 27.70 41.77 54.97 57.94 51.58 47.40 35.00 28.77 20.61 31.36
1924-2.81 11.31 18.74 30.83 36.06 46.90 53.58 53.39 42.97 43.03 22.53 -0.77 29.65
19256.71 8.86 17.81 34.50 36.52 52.37 53.77 56.97 47.50 28.35 21.37 9.16 31.16
19265.90 10.04 10.65 25.63 42.29 46.77 56.39 53.71 43.00 33.16 19.07 6.10 29.39
19272.84 11.46 22.81 30.40 39.48 49.00 52.90 47.58 52.03 37.94 21.17 2.65 30.85
19287.42 5.76 14.23 24.70 43.00 46.17 55.55 52.65 43.97 37.58 26.70 16.65 31.20
1929-7.03 -0.43 20.61 31.23 38.68 49.00 55.65 53.03 45.40 36.03 19.33 10.61 29.34
1930-0.39 12.04 17.48 31.67 43.16 53.33 57.00 54.42 45.77 35.35 25.97 13.23 32.42
193115.29 16.04 20.35 30.93 40.23 54.83 59.65 53.23 51.97 39.58 30.90 21.71 36.23
193213.13 7.14 10.19 28.37 42.26 53.47 56.29 55.23 45.40 34.35 18.00 6.48 30.86
19339.42 0.86 15.74 28.00 42.84 55.23 58.29 53.23 46.87 32.16 18.67 4.26 30.46
193411.90 -0.54 10.42 29.47 44.48 51.47 55.23 49.48 44.93 38.10 27.17 6.19 30.69
1935-0.10 9.54 19.16 28.43 37.68 46.43 61.55 55.94 44.27 35.35 18.63 10.87 30.65
19361.32 -10.38 17.19 24.20 44.00 46.83 59.03 54.61 49.43 30.13 18.07 10.03 28.71
1937-4.87 5.32 11.87 29.43 43.29 50.47 57.16 58.61 46.83 34.00 20.90 5.61 29.89
19384.32 9.57 21.94 31.80 40.26 50.83 57.42 58.65 47.40 39.10 22.70 11.61 32.97
19399.29 -0.36 12.16 25.40 43.97 53.87 57.19 54.58 47.23 35.03 24.30 19.29 31.83
1940-0.45 10.41 7.42 27.23 37.19 48.33 55.97 54.74 48.60 38.16 20.70 12.58 30.07
19418.03 5.79 11.71 35.33 45.29 50.97 58.06 54.81 49.80 37.13 24.97 17.90 33.32
19427.94 6.11 19.90 35.00 38.10 50.10 53.03 53.58 42.73 35.00a20.70 8.42 30.88
1943-0.10 4.68 7.19 26.30 40.03 51.20 55.81 54.35 43.13 36.00 20.07 9.94 29.05
194415.97 8.17 13.39 26.80 46.03 51.53 55.94 55.55 48.00 35.90 30.57 9.06 33.08
19452.42 5.93 25.19 29.90 35.23 46.47 53.10 53.84 45.70 33.23 22.67 6.65 30.03
19467.00 1.89 27.16 32.57 39.23 50.47 56.13 51.03 45.63 37.45 22.93 9.90 31.78
19479.06 2.29 12.58 27.07 36.94 47.80 55.68 60.26 46.67 45.06 19.63 11.68 31.23
1948-2.00 0.90 12.23 33.43 38.68 49.83 56.32 54.48 46.60 36.06 27.73 10.61 30.41
19499.48 4.96 14.55 31.70 42.45 54.57 58.45 56.90 44.73 38.61 24.40 9.68 32.54
1950-1.97 4.82 9.19 22.63 38.97 50.63 53.32 46.55 45.20 39.71 17.83 6.39 27.77
19514.58 7.64 13.16 30.50 45.16 49.40 56.68 52.65 44.60 36.90 15.96b9.35 30.55
19525.65 12.93 15.06 32.97 42.32 52.77 58.48 54.87 48.80 31.45 26.43 18.55 33.36
195310.68 8.07 20.16 28.83 41.16 52.70 56.68 58.16 48.23 39.42 26.87 12.10 33.59
19541.39 16.93 12.03 28.60 36.16 53.41a54.10 52.61 46.30 35.74 26.80 14.45 31.54
19555.94 6.21 10.52b37.40 43.76b53.79a60.71 58.07d45.37c37.48 21.03 4.42 32.06
19566.13 4.90 12.30a27.40 38.58 53.80 52.52 53.97 41.67 39.19 24.28a11.26 30.50
1957-1.65 4.71 11.68 29.63 40.13 49.80 57.29 54.58 43.47 36.19 24.10 10.19 30.01
195810.16 3.00 15.71 31.00 37.65 44.97 53.39 51.97 48.23 38.77 24.33 1.61 30.07
1959-4.42 -0.96a14.00 29.70 43.71 52.80 56.06 58.83a46.93 34.00 13.90 17.42 30.16
19605.74 5.17 3.10 31.63 40.87 46.97 53.26 54.90 48.20 36.97 26.67 6.65 30.01
19611.13 10.86 20.03 27.77 36.87 50.40 55.29 55.48 46.30 37.94 24.53 9.84 31.37
19620.45 1.36 18.16 27.43 46.42 48.57 52.39 52.39 44.70 38.42 27.00 8.35 30.47
1963-4.74 -4.64 16.65 30.77 39.16 51.47 56.52 52.52 47.20 45.45 29.30 3.68 30.28
196410.03 6.03 8.97 29.37 43.60a50.23 56.84 51.68 45.70 35.61 25.27 2.90 30.52
1965-2.58 -2.68 4.65 28.47 44.26 47.20 51.90 51.13 41.23 37.42 23.83 17.13 28.50
1966-5.55 4.25 19.03 26.67 36.48 51.00 58.52 53.32 46.33 35.06 21.77 10.29 29.76
19676.68 -3.75 16.23 29.00 35.19 51.27 53.35 50.06 45.17 35.16 20.60 10.42 29.12
19682.61 1.00 21.48 31.43 39.74 49.53 55.77 52.77 48.90 40.74 24.40 8.68 31.42
19694.68 4.61 7.77 32.57 42.35 45.10 53.90 56.23 46.73 34.17b23.20 13.42 30.39
1970-2.90 -0.04 8.42 30.27 41.06 52.63 57.10 53.42 46.97 38.45 22.80 8.42 29.72
1971-1.65 3.25 9.42 28.27 36.42 52.80 51.61 49.29 47.50 43.06 23.93 9.16 29.42
1972-6.61 -1.28 8.29 24.70 42.68 47.37 53.35 54.23 43.38a33.84 24.07 5.87 27.49
19736.68 7.43 26.03 30.17 35.63l51.67i54.00h56.27a44.40 39.87 23.67 6.03 26.73c
1974-0.74 -6.36 12.61 27.83 37.32 45.93 57.11c51.29 39.50 34.87 23.70 11.65 27.89
19753.94 4.50 10.29 21.87 43.35 50.33 56.16 51.13 40.77 35.90 23.77 6.94 29.08
1976-3.39 10.46a12.52 31.70 35.68 50.67 51.16 50.42 39.13 27.74 13.60 -2.71 26.42
1977-12.61 4.24c21.74 32.53 48.32 47.27 54.68 44.45 45.17 33.61 22.80 7.58 29.15
1978-2.13 -4.54 8.26 27.77 41.39 47.80 53.55 53.42 48.17 34.81 18.63 2.06 27.43
1979-11.68 -6.54 15.10 26.30 35.10 45.30 52.77 49.58 43.63 31.35 19.33 8.77 25.75
1980-1.58 -2.21 6.68 28.30 39.42 45.10 51.10a51.00 39.20 26.23 18.03 -0.35 25.08
1981-4.74 5.04 12.61 26.47 31.65 50.67 54.35 54.23 42.30 31.61 27.53 9.45 28.43
1982-12.48 -2.00 13.65 24.87 46.03 42.37 54.19 47.71 43.23 34.26 16.97 13.55 26.86
19834.42 14.00 18.90 22.47 34.19 49.10 58.26 55.58 46.40 32.48 24.20 -5.26 29.56
1984-3.61 14.10 3.52 28.83 35.03 51.77 51.42 55.32 41.43 39.13 22.87 7.42 28.94
1985-1.65 -1.54 20.81 32.67 42.77 45.93 52.48 50.35 45.90 35.55 16.80 -0.71 28.28
19864.58 4.32 18.10 34.67 44.00 49.17 56.94 50.06 45.67 34.10 17.33 11.94 30.91
19878.58 13.21 23.10 32.27 43.81 51.67 55.90 52.26 48.40 31.39 26.97 16.81 33.70
1988-1.23 -3.83 15.35 28.87 44.23 51.00 56.29 56.32 45.50 29.68 25.63 6.39 29.52
19896.55 -7.79 6.52 24.67 39.94 46.77 55.84 53.48 43.97 34.45 15.20 -4.61 26.25
19907.61 2.00 18.23 31.50 36.74 51.90 53.48 53.03 45.40 31.97 24.50 6.26 30.22
1991-3.65 5.36 15.23 32.40 46.26 53.90 54.77 54.48 43.20 31.42 16.70 8.52 29.88
19928.97 11.59 12.77 26.93 41.52 46.40 48.68 48.29 42.30 32.39 20.90 9.55 29.19
19933.26 1.79 12.42 26.27 39.61 48.47 55.87 54.13 39.40 30.06 18.50 11.16 28.41
1994-10.10 -4.07 14.84 25.63 40.29 51.20 54.29 51.19 48.87 37.58 24.20 13.48 28.95
19956.55 3.32 18.10 22.43 39.19 53.40 55.58 57.52 41.43 36.81 11.50 4.74 29.21
1996-5.84 -2.24 5.03 20.77 37.55 51.73 52.10 53.13 46.93 33.61 15.97 8.35 26.42
19970.39 4.18 11.68 24.50 34.06 53.37 54.77 50.13 46.40 35.87 18.67 17.03 29.25
199810.26 21.32 16.00 32.23 44.39 53.30 57.19 56.45 49.33 37.48 28.63 14.84 35.12
19990.90 12.14 14.42 30.80 44.39 51.73 58.29 53.81 45.80 32.29 28.50 13.39 32.21
20002.39 11.14 21.94 28.77 42.90 46.37 55.55 54.13 43.33 37.61 25.73 -1.06 30.73
20018.97 -0.89 12.94 31.63 43.03 52.67 55.74 55.71 44.77 34.23 32.47 18.61 32.49
200211.03 13.14 6.10 27.53 36.03 52.43 59.81 55.32 47.70 30.26 20.33 13.16 31.07
20030.90 -3.75 10.87 24.53 39.10 49.67 54.71 56.26 47.37 33.94 21.43 14.35 29.11
2004-1.81 8.28 19.19 28.43 37.90 47.77 53.26 48.55 49.83 36.77 26.73 7.71 30.22
20051.03 10.39 9.94 32.87 40.06 55.13 56.42 55.48 48.07 38.00 23.00 11.74 31.84
200617.58 1.68 15.61 34.50 43.84 51.03 59.29 55.13 42.47 29.10 26.57 16.26 32.75
20078.23 -3.25 18.26 26.07 44.90 53.20 55.39 54.90 47.40 40.81 23.03 7.61 31.38
20085.90 -2.31 6.77a27.11b37.52b50.00 55.29 50.74 46.70 35.48 21.13 0.29 27.89
2009-5.10 4.82 13.10 29.37 38.68 48.93 50.83a51.29 48.90 32.32 29.38a7.00 29.13
20108.00 3.04 21.32 32.77 44.17a51.60 59.03 57.77a42.30 36.74 25.23 9.00a32.58
20111.68 6.32 13.23 28.27 40.32 50.37 59.68 54.97 45.20 38.90 24.80 15.19 31.58
20127.42 13.31 31.32 29.90 44.23 53.00 59.06 52.55 41.60 32.26 23.60 15.73a33.67
20135.06 2.14 9.65 21.20 39.03 49.63 54.55 53.45 45.63 35.97 21.37 -1.74 28.00
2014-6.45 -5.25 1.71 23.43 42.16 52.07 53.00 53.10 44.63 35.23 14.20 14.23 26.84
20153.77 -7.00 15.16 29.14b40.19 49.17 56.06 53.26 51.83 34.90 27.57 22.55 31.38
20166.77 10.83 21.45 27.83 40.58 50.83a56.10 56.83a49.83 38.67a29.67 10.13 33.29
20178.61 12.64 14.68 29.83 38.35 50.17 53.45 50.45 47.03 36.97 19.73 5.97 30.66
20184.00 -0.93 13.19 18.03 45.29 52.57 56.58 54.80a49.59a31.77 17.53 15.77 29.85
20191.61 -1.93 9.68 27.83 37.87 48.43 57.90 51.71 49.37 35.06 19.43 11.52 29.04
20209.32 3.31 17.77 25.17 41.42 52.47 58.29 54.71 43.50 29.42 27.13 14.10 31.38
20219.61 -3.32 20.03 29.47 40.06 54.10 55.10 55.84 45.67 42.19 21.63 11.84 31.85
2022-5.23 -3.11 11.61 24.77 43.29 50.17 55.94 55.10 46.57 34.81 23.60 7.68 28.77
202313.81 8.14 12.61 28.17 42.52 52.17 53.68 52.16 50.37 39.71 23.10 21.84 33.19
202413.26 15.68a18.11c-----z-----z-----z-----z-----z-----z-----z-----z-----z15.68i
Period of Record Statistics
MEAN2.91 4.03 14.70 28.82 40.59 50.38 55.50 53.39 45.94 35.67 22.84 9.62 30.32
S.D.6.39 6.23 5.54 3.63 3.47 2.85 2.47 2.76 2.86 3.51 4.15 5.76 1.98
SKEW-0.24 0.13 0.19 -0.14 -0.05 -0.25 0.05 -0.34 -0.23 0.01 -0.23 -0.16 -0.05
MAX17.58 21.32 31.32 39.47 51.32 56.60 62.65 60.26 52.27 45.45 32.47 22.55 36.23
MIN-13.32 -10.38 1.71 18.03 31.33 42.37 48.68 44.45 38.37 26.23 11.50 -5.26 25.08
YRS123 123 122 122 121 121 121 123 123 123 123 123 120