Note:  The data provided on this page are "unofficial".  The National Climatic Data Center is the official source for climate data. If you have any questions, they may be directed to:  Webmaster  or call (906) 475-5212.

 

Elevation: 1071 Above Mean Sea Level
Location:Iron Mtn-Kingsford WWTP
Period of Record:1949 to Present
Period of Normals: IMT 1971 TO 2000 


Iron Mountain 1949 to 2002 Annual Averages 
Year     MaxT    MinT    T          HDD      CDD    Prec       Snow
1949     55.4     32.5     44.0      8102      517      24.65       51.4
1950     50.6     28.0     39.3      9478      178      30.22       96.3
1951     52.3     31.5     41.9      7808      171      45.74       55.2
1952     54.0     31.6     42.8      8300      304      27.68       62.4
1953     54.7     33.0     43.9      7961      342      30.21       40.5
1954     52.0     31.7     41.9      8587      231      34.77       59.0
1955     53.9     31.4     42.7      8567      504      24.88       74.6
1956     53.3     30.6     41.9      8339      187      24.97       38.6
1957     53.3     30.3     41.8      8528      320      26.40       31.6
1958     52.5     30.2     41.3      8727      178      28.70       37.4
1959     51.4     29.6     40.5      8525      410      34.07       68.8
1960     52.2     30.0     41.1      8866      208      33.04       38.6
1961     53.5     30.9     42.2      8509      293      29.48       69.6
1962     52.2     30.0     41.1      8827      198      30.64       79.5
1963     53.7     29.4     41.5      8767      296      21.10       30.3
1964     54.3     31.4     42.9      8358      357      32.43       42.2
1965     51.7     30.2     41.0      8852      177      31.96       76.1
1966     52.8     31.3     42.0      8710      417      23.26       55.5
1967     51.9     29.8     40.8      8913      179      30.64       77.8
1968     53.6     32.2     42.9      8346      341      36.03       65.9
1969     53.1     30.8     42.0      8633      313      22.06       60.9
1970     53.4     30.7     42.0      8687      405      32.29       60.7
1971     52.9     30.7     41.8      8690      311      32.39       99.0
1972     50.6     28.2     39.4      9510      234      31.52      115.4
1973     54.0     33.7     43.8      8002      353      32.90       47.0
1974     52.3     30.7     41.5      8725      240      30.23       38.1
1975     54.0     31.7     42.9      8438      447      29.54       76.0
1976     53.2     28.9     41.1      9037      370      21.46       89.8
1977     54.1     31.9     43.0      8319      370      35.42       89.5
1978     52.8     29.8     41.3      8903      339      31.58       51.5
1979     50.9     29.8     40.3      9172      257      30.74       80.5
1980     53.0     31.1     42.0      8662      362      26.26       48.0
1981     54.1     32.2     43.2      8136      252      26.99       42.0
1982     52.3     30.6     41.4      8768      244      34.23       47.5
1983     53.3     32.8     43.0      8529      603      33.87       62.0
1984     53.1     30.4     41.8      8618      272      29.62       44.1
1985     51.7     28.5     40.1      9176      172      36.04       90.4
1986     53.7     30.0     41.9      8637      283      24.02       44.1
1987     59.3     35.0     47.1      6345      460      24.84       41.9
1988     54.4     28.8     41.6      9020      551      24.28       47.4
1989     52.5     26.4     39.5      9547      320      20.32       66.8
1990     55.2     29.4     42.3      8459      262      26.95       44.9
1991     54.6     31.0     42.8      8549      535      33.90       48.3
1992     50.7     29.4     40.1      8402      138      25.72       83.3
1993     52.1     29.8     41.0      8962      275      29.15       51.7
1994     53.5     30.5     42.0      8609      303      27.49       47.2
1995     52.3     31.6     42.0      8845      536      35.57       65.9
1996     50.5     28.7     39.6      9511      291      36.64      105.6
1997     53.1     30.0     41.6      8701      238      25.93       60.5
1998     57.4     35.2     46.3      7229      478      26.32       71.0
1999     55.1     32.7     43.9      8084      462      36.96       48.4
2000     53.6     30.9     42.2      8456      237      35.47       80.0
2001     55.6     34.2     44.9      7710      456      26.01       41.3
2002     53.3     33.5     43.4      8331      534      36.53       60.6
________________________________________________________________________
1971 to 2000
AVG   53.3      30.7     42.0     8629       341      30.10       64.6

... January Normals ...

Avg Max Temperature: 23.5

 Avg Heating Degree Days: 1604
 Avg Min Temperature: 1.4 Avg Cooling Degree Days: 0
Avg Temperature: 12.4 Avg Precipitation: 1.45
Avg Snowfall: 16.8

... January Records ...
Day Max Yrs Min Yrs Pcp Yrs Snow Yrs
 1 38 80 -22 68 0.20 82 3.0 82
 2 37 50/98 -23 74 0.35 00 5.0 66
 3 41 98 -18 74/81 0.70 00 11.5 00
 4 43 90 -24 81 0.70 71 17.0 71
 5 41 92 -19 68/99 0.84 97 3.0 62
 6 44 61 -21 96 0.42 80 4.0 67/80
 7 45 49 -29 86 0.42 67 7.0 67
 8 48 90 -26 86 0.49 69 5.5 69
 9 53 03 -30 77 0.57 98 9.0 98
 10 51 02 -23 82 0.24 00 2.0 97
 11 46 01 -26 79 0.56 75 5.0 76
 12 46 86 -25 84 0.55 60 5.0 72
 13 44 61 -21 54 0.40 93 6.0 93/98
 14 43 96 -25 88 0.42 50 4.6 50
 15 36 49/64 -31 72/84 0.49 98 7.0 98
 16 48 73 -30 84 0.47 69 2.0 69/81
 17 46 73 -31 82 0.45 67 8.0 67
 18 48 86 -25 84 0.60 96 5.0 69
 19 46 81 -32 94 1.55 96 5.0 49
 20 42 64 -27 94 0.62 88 8.5 88
 21 45 81 -31 84 0.35 74 4.0 49
 22 45 64 -24 84 0.58 52 5.5 52
 23 46 67 -30 63 0.49 99 6.0 79
 24 44 89 -17 63/00/04 0.66 64 6.0 79
 25 50 73 -21 91 0.84 67 6.0 72/97
 26 51 73 -27 97 0.28 71 4.0 71
 27 43 73 -25 50 0.57 96 9.9 96
 28 38 90 -24 86 0.80 70 8.0 49
 29 46 89 -28 51 0.44 75 8.0 75
 30 39 99 -31 51 0.62 01 4.0 69
 31 45 89 -33 96 0.23 55 3.5 55

... February Normals ...

Avg Max Temperature: 29.1

 Avg Heating Degree Days:1324
Avg Min Temperature: 5.8 Avg Cooling Degree Days: 0
Avg Temperature: 17.4 Avg Precipitation: .89
Avg Snowfall: 9.1

... February Records ...
Day Max Yrs Min Yrs Pcp Yrs Snow Yrs
 1 50 89 -33 96 0.46 68 6.0 02
 2 44 87 -30 96 0.94 98 6.0 98
 3 56 91 -31 96 0.50 03 4.5 83
 4 56 91 -39 96 0.88 03 5.0 70
 5 56 91 -35 96 0.57 71 6.0 71
 6 46 90 -18 59 0.41 53 5.0 53
 7 49 02 -26 03 0.40 52 2.0 70/81
 8 52 91 -27 62 0.39 50 4.0 50
 9 56 91 -23 72 0.59 01 4.0 01
 10 43 77 -27 94 0.38 65 2.0 63/70
 11 41 87/99 -19 86/99 0.47 53 5.3 53
 12 46 74/76 -26 00 1.17 99 10.0 65
 13 44 76 -22 65/97 0.97 84 6.0 62
 14 46 54 -24 70 0.44 62 5.0 62
 15 49 81 -18 2004 0.80 67 8.0 67
 16 52 81 -20 63/03 0.68 00 7.8 00
 17 58 81 -34 79 0.42 99 3.5 99
 18 50 81 -24 79 0.60 61 7.0 61
 19 58 97 -23 59 0.48 71 6.0 71
 20 52 82 -23 59 0.73 02 6.0 52
 21 50 61 -14 63 0.36 2004 4.7 2004
 22 60 84 -19 65 0.69 81 5.0 62/74
 23 55 00 -20 67 0.58 54 5.5 54
 24 61 76 -17 64 0.47 77 6.0 94
 25 55 76 -25 03 0.47 75 7.5 75
 26 56 76 -23 03 0.53 51 4.2 62
 27 57 00 -15 91 0.40 96 8.5 72
 28 48 83 -14 70 0.60 51 3.0 72/92
 29 52 2004 -11 80 0.04 88 0.8 88

... March Normals ...

Avg Max Temperature: 38.9

 Avg Heating Degree Days: 1145
Avg Min Temperature: 16.7 Avg Cooling Degree Days: 0
Avg Temperature: 27.8 Avg Precipitation: 1.83
Avg Snowfall: 11.1

... March Records ...
Day Max Yrs Min Yrs Pcp Yrs Snow Yrs
 1 58 00 -26 62 0.78 51 7.3 51
 2 56 93 -24 89 0.64 91 10.0 76
 3 58 93 -22 43/72 0.68 51 6.5 51
 4 54 00 -15 03 1.20 79 10.0 89
 5 58 00 -21 48 0.71 04 6.4 04
 6 58 74 -20 89 1.25 59 12.5 59
 7 65 00 -19 89 1.03 73 6.0 95
 8 75 00 -21 43 0.53 02 4.0 03
 9 77 00 -17 03 1.04 02 3.7 92
 10 57 77 -15 72 0.51 66 3.7 92
 11 56 85/90 -27 48 1.04 73 3.5 56
 12 62 95 -11 84 1.11 77 7.0 76
 13 64 95 -13 48 0.72 54 7.0 54
 14 65 95 -7 92 0.81 43 11.0 97
 15 67 95 -16 56 1.05 55 10.0 39
 16 64 90 -9 97 0.54 72 6.0 72
 17 67 66 -12 76 0.49 34 5.0 34
 18 65 66 -27 39 0.31 65 5.0 65
 19 65 76 -21 89 0.94 86 6.0 83
 20 60 46 -8 65 0.90 69 5.0 69
 21 62 46 -10 89 0.76 55 7.5 55
 22 67 45 -17 04 0.65 49 11.0 55
 23 64 94 -7 40 0.85 91 8.0 52
 24 66 39 -13 74 0.77 94 6.0 75/96
 25 65 87/03 -7 40/60 0.90 96 4.0 75
 26 68 45 -5 40/55 0.70 76 2.5 64
 27 74 46 -10 65 1.04 50 4.0 36
 28 76 46 -5 55 1.01 03 4.0 31
 29 75 46 0 70 1.04 51 5.5 44
 30 71 38 0 65 2.38 98 9.0 72
 31 70 38 0 87 0.87 38 3.9 85

... April Normals ...

Avg Max Temperature: 53.3

 Avg Heating Degree Days: 708
Avg Min Temperature: 29.0 Avg Cooling Degree Days: 1
Avg Temperature: 41.2 Avg Precipitation: 2.18
Avg Snowfall: 4.5

... April Records ...
Day Max Yrs Min Yrs Pcp Yrs Snow Yrs
 1 76 45 7 75 2.25 51 7.0 65
 2 71 63 8 54 1.01 67 4.9 32
 3 72 63 0 54 2.20 34 2.0 34/80
 4 69 88 1 54 1.55 74 12.0 77
 5 64 97 -6 72 1.55 47 7.0 03
 6 77 91 0 50/03 1.32 58 10.5 58
 7 84 91 4 82 1.35 51 4.5 67
 8 85 91 2 39 0.67 80 2.0 46
 9 75 55 5 39 0.84 91 2.0 79/83
 10 81 77 9 57 0.88 50 6.8 91
 11 82 77 10 52 0.90 02 6.0 92
 12 82 68 11 39/40 1.13 77 4.0 93
 13 76 31 12 40/47 1.09 68 1.0 35/96
 14 80 41 13 40 0.68 83 3.5 00
 15 86 03 7 43 0.93 53 5.0 96
 16 84 76 15 62/83 1.19 45 8.0 93
 17 86 02 12 93 1.15 39/67 4.0 98
 18 77 31/87 16 83 0.75 43 3.0 43
 19 83 87 12 83 1.20 95 1.0 78
 20 82 52 13 56 1.36 70 3.0 82
 21 85 87 1 37 1.00 92 2.5 51
 22 94 80 18 36 0.52 62 6.0 02
 23 81 85/90 11 56 1.12 45 Trace 41/88
 24 83 42 14 56 2.02 37 2.3 58
 25 89 90 17 72 0.97 48 2.0 36
 26 90 90 18 33 1.65 54 7.0 65
 27 87 52 17 40 1.18 35 3.0 88
 28 89 52 18 44/73 1.35 02 9.0 02
 29 84 52 18 58 0.39 38 0.7 56
 30 85 52 16 56 1.61 84 6.3 50

... May Normals ...

Avg Max Temperature: 67.7

 Avg Heating Degree Days: 335
Avg Min Temperature: 40.8 Avg Cooling Degree Days: 20
Avg Temperature: 54.2 Avg Precipitation: 3.01
Avg Snowfall: 0.8

... May Records ...
Day Max Yrs Min Yrs Pcp Yrs Snow Yrs
 1 85 34/52 21 35/89 1.19 73 2.0 81/96
 2 84 51 21 90 0.90 73 Trace 66/76
 3 90 49/55 19 67 1.08 93 Trace 36/02/2004
 4 88 80 20 67 0.76 81 0.2 54
 5 86 49 19 58 0.88 60 7.0 79
 6 88 00 20 70 2.06 60 3.0 60
 7 87 36 19 74 1.79 99 Trace 47/89
 8 89 00 20 50 1.42 63 Trace 45/66
 9 88 34/53 19 47 0.91 95 Trace 33/66
 10 86 34 18 66 1.05 90 3.0 90
 11 84 93 16 90 1.47 93 8.0 90
 12 87 77 20 39 0.54 44 0.3 97
 13 88 77/91 20 43 0.78 42 0.0
 14 91 91 22 37 1.13 78 Trace 73
 15 89 62/91 23 37 1.10 57 Trace 46
 16 90 62/91 21 57 2.83 76 Trace 56/73
 17 88 62 26 83 1.13 91 0.5 97
 18 87 72 26 39 1.30 33 0.0
 19 89 98 24 45 1.18 79 0.0
 20 87 48/98 24 02 0.72 46 Trace 02
 21 92 94 27 58/69 1.23 45 Trace 63
 22 92 64/94 22 47 1.61 83 0.0
 23 87 80 21 63 0.60 95 0.0
 24 86 80 22 56 2.00 2004 Trace 49
 25 87 65/91 27 69 1.37 89 Trace 61
 26 90 78 27 54 1.07 85 Trace 61
 27 88 78 26 94 1.45 39 0.0
 28 92 69 26 49 0.99 78 Trace 47/65
 29 91 86 28 48 1.45 72 1.0 47
 30 95 86 29 90 1.02 91 0.0
 31 100 34 27 45 1.99 70 0.0

... June Normals ...

Avg Max Temperature: 76.0

 Avg Heating Degree Days: 116
Avg Min Temperature: 50.3 Avg Cooling Degree Days: 69
Avg Temperature: 63.2 Avg Precipitation: 3.48
Avg Snowfall: 0.0

... June Records ...
Day Max Yrs Min Yrs Precip Yrs Snow Yrs
 1 99 34 32 66 1.03 2004 0.0  
 2 92 44 26 56 1.07 51 Trace 45
 3 93 48 31 62 1.68 42 Trace 45
 4 91 34 28 45 1.42 42 Trace 45
 5 92 68 28 45 1.23 66 0.0  
 6 95 88 31 58 0.72 66 0.0  
 7 97 88 30 44 2.13 40 0.0  
 8 95 88 24 49 0.98 84 0.0  
 9 92 00 31 37/58 1.38 89 0.0  
 10 93 56 30 72/80 2.32 62 0.0  
 11 95 49 35 58/80 1.57 39 0.0  
 12 96 56 31 47 1.30 90 0.0  
 13 97 56 34 68/78 1.67 96 0.0  
 14 94 88 30 58 2.82 81 0.0  
 15 98 88 33 48 1.02 74 0.0  
 16 90 94 30 64 1.70 60 0.0  
 17 95 87 34 50/72 3.78 51 0.0  
 18 92 94/95 36 47 0.82 44 0.0  
 19 100 95 38 50 1.26 35 0.0  
 20 97 95 34 68 1.46 93 0.0  
 21 96 95 31 92 1.18 68 0.0  
 22 90 41 34 92 0.89 75 0.0  
 23 94 34 35 59 1.10 62 0.0  
 24 92 95 36 79 2.65 46 0.0  
 25 93 87 37 70 1.58 93 0.0  
 26 94 41 36 45/82 0.97 56 0.0  
 27 95 33/71 36 92 1.67 68 0.0  
 28 95 91 38 54 1.86 67 0.0  
 29 100 31 35 88 1.55 71 0.0  
 30 99 31 36 65/85 2.57 95 0.0  

... July Normals ...

Avg Max Temperature: 80.0

 Avg Heating Degree Days: 40
Avg Min Temperature: 55.4 Avg Cooling Degree Days: 131
Avg Temperature: 67.7 Avg Precipitation: 3.66
Avg Snowfall: 0.0

... July Records ...
Day Max Yrs Min Yrs Pcp Yrs Snow Yrs
 1 98 63 37 88 1.86 64 0.0  
 2 96 02 36 40 0.91 60 0.0  
 3 94 49 38 68/86 1.18 51 0.0  
 4 92 35 36 61/72 1.96 58 0.0  
 5 93 48/99 36 67 1.00 38 0.0  
 6 95 95 37 65 1.10 98 0.0  
 7 100 36 39 97 1.09 52 0.0  
 8 100 36/88 36 42 1.22 59 0.0  
 9 99 36 37 63 2.02 99 0.0  
 10 100 36 35 68 0.67 88 0.0  
 11 100 36 36 45 3.81 82 0.0  
 12 102 36 40 40 1.06 87 0.0  
 13 103 36 41 44/90 0.62 96 0.0  
 14 99 36 38 50 1.36 68 0.0  
 15 94 83 40 39/46 4.05 99 0.0  
 16 93 31/02 35 39 1.40 88 0.0  
 17 93 31 38 58 2.55 42 0.0  
 18 96 86 40 71 0.87 93 0.0  
 19 99 77 39 65 1.15 78 0.0  
 20 93 77 38 41 1.65 52 0.0  
 21 93 98 37 92 1.90 35 0.0  
 22 94 02 36 47 1.88 78 0.0  
 23 96 41 40 49 0.64 50 0.0  
 24 97 41 39 53 1.99 64 0.0  
 25 93 41/49 40 59 1.21 39 0.0  
 26 102 55 38 46 2.23 51 0.0  
 27 94 31/41 38 37 2.27 00 0.0  
 28 95 31/41 40 78 1.00 00 0.0  
 29 96 33/88 39 52 2.02 91 0.0  
 30 98 33 42 37/78 1.20 79 0.0  
 31 96 99 40 49/71 2.08 50 0.0  

... August Normals ...

Avg Max Temperature: 77.6

 Avg Heating Degree Days: 64
Avg Min Temperature: 54.0 Avg Cooling Degree Days: 97
Avg Temperature: 65.8 Avg Precipitation: 3.78
Avg Snowfall: 0.0

...August Records ...
Day Max Yrs Min Yrs Pcp Yrs Snow Yrs
 1 94 55 43 62/68 1.46 50 0.0  
 2 94 64 38 47 2.48 64 0.0  
 3 97 88 42 45 1.09 59 0.0  
 4 92 88/89 37 51/72 1.93 56 0.0  
 5 101 47 37 57 0.55 88 0.0  
 6 98 47 41 75 1.80 93 0.0  
 7 96 01 40 44/90 1.31 59 0.0  
 8 98 01 39 55 1.14 57 0.0  
 9 98 01 33 64 1.04 95 0.0  
 10 94 44 37 62 2.07 38 0.0  
 11 93 44/47 35 67 1.23 41 0.0  
 12 97 47 40 46/82 1.32 63 0.0  
 13 93 44 38 41/61 1.25 70 0.0  
 14