CHARLESTON, IL

Average of Minimum Temperature (Degrees Fahrenheit)

(111436)

File last updated on September 28, 2022
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
189625.13 25.59b28.14b50.43 60.55 62.87 66.32 64.32 54.86b39.67a34.92f29.93a46.16a
189718.81d25.29d34.86b43.48a48.74 63.03 68.74 61.55 58.07 49.61 33.69a24.29 44.18
189827.06 26.14 37.10 41.27 55.13 64.80 67.26 66.26 62.20 46.06 30.47 21.45 45.43
189920.29 12.68 28.10 46.00 56.37a65.20 65.81 67.10 55.67 50.26 40.20 23.52 44.26
190025.93a16.67a28.13 43.34a55.53a63.53 -----z70.65 61.83 50.72b34.58d26.20a43.37a
190122.38e17.12c34.83a-----z52.65 -----z-----z-----z-----z-----z29.27 19.46e29.29f
190222.32 10.96b37.45b39.21b58.97 62.03a66.58 62.84 55.10 48.84 44.97 23.84f46.30a
190322.10 22.39 38.33a42.76a57.39 57.27 66.10 63.61 55.33 46.03 31.90 17.70a43.41
190414.83b17.31 34.13 38.93 53.97 61.03 63.06 61.45 58.67 45.00 33.10 23.68 42.10
190515.29c13.22a38.42 43.13 55.90 63.10a65.10 65.23 59.27 45.74 33.33 25.77 43.63
190627.66b19.43 25.59b45.63 52.61 60.40 60.45 65.10 59.70 43.74 31.62a26.80a43.23
190726.61 22.89a40.71 33.90 46.61 57.13 65.52 62.32 55.10 42.06 28.93 27.67a42.46
190822.74 22.66 36.80a42.72a54.68 60.30 64.33a62.03 56.27 41.16 34.59a25.23a43.63
190924.26 26.54 31.90 41.20 49.77 62.23 63.03 63.81 53.13 39.84 42.53 15.87a42.84
191022.74 18.75 39.94 41.47 47.52 56.77 65.52 60.47a57.30 45.81 27.97 19.19 41.95
191124.03 28.36 30.58 40.77 55.87a63.10 63.52 62.19 61.03 45.45 29.50 29.77 44.51
19128.68 16.41 24.29 44.07 54.55 57.00 66.06 62.39 57.00 43.67a32.97a25.29 41.03
191326.19d18.33a29.60a41.60 53.33a62.07a66.68 -----z-----z43.53a39.52a31.72b41.26b
191427.94 13.18 29.58 42.38a52.32 64.50 64.84 63.97 54.97 47.16 33.23 18.00c42.67
191515.68 30.96 27.55 45.63 50.30a58.33 62.04c58.39 58.47 44.31b34.90 23.70a42.52
191623.10a19.72 28.55 38.73 53.23 56.10 66.58 64.94 51.93 41.16 34.23 19.13 41.45
191721.00 16.00 32.26 40.80 44.19e57.17 62.77 58.58 51.37 34.90 32.87 13.10 38.75
19183.29 21.71 33.20a38.57 55.32 59.40 60.58 66.71 47.13 47.55 33.33 30.04d41.40
191923.03 23.88b33.10 42.50 49.74 64.53 64.74 60.77 56.60 49.42 32.40 17.20a43.16
192014.77 23.14 32.19 37.37 50.97 58.73 61.90 60.52 57.63 47.50a32.23 25.61 41.88
192127.42 29.82 39.74 43.93b52.55 65.43 67.06 63.16 62.07 44.19 34.77 27.90 46.50
192215.32 25.25 34.97 44.27 54.90 60.83 63.19 61.26 56.60 46.10 35.20 23.71 43.47
192328.16 19.04 28.45 39.03a49.55 61.50 64.23a62.61 56.83 39.81 34.63 33.23 43.09
192412.81 22.59 29.19 42.67 44.55 60.33 59.61 62.58 50.67 45.67a33.57 18.32 40.21
192518.06 27.93 31.68 45.97 44.55 63.67 62.74 60.58 62.57 38.23 31.43 20.71 42.34
192622.06 27.64 25.61 35.17 52.13 55.50 64.32 65.90 60.27 45.74 29.33 22.52 42.18
192719.03 29.78a36.13 43.90 51.19 56.27 61.81 56.52 59.90 46.03 36.83 20.39 43.15
192820.77 25.31 31.32 36.62a48.83a55.47 64.65 64.32 49.47 47.00 36.23 26.26 42.19
192914.39 16.79 38.03a45.37 49.58 58.17 66.32c58.79b54.66a44.06 29.73 22.94 41.57
193014.68 32.46 29.52 44.10 52.74 58.37 66.45 62.87 57.90 42.19d34.57 25.16 43.42
193125.58 29.39 28.94 42.37 48.74 63.23 66.65 63.03 60.73 49.29 42.10a33.48 46.13
193229.77 30.83 25.00 41.34a51.45 62.13 64.48 62.47a54.43 44.10 26.73 23.16 42.99
193330.06 20.50 32.03 42.00 55.68 63.67 65.19 60.87 61.20 43.19 31.23 28.32 44.50
193426.16 16.75 27.71 41.07 52.65 65.60 68.52 63.42 55.77 46.03 38.50 22.90 43.76
193523.07a27.07 39.03 40.87 49.16 58.53 67.84 65.42 54.63 46.19 34.43 18.29 43.71
193613.65 12.45 35.37a37.87 54.52 59.00 70.29 68.00 59.83 45.29 29.63 26.94 42.74
193721.77 22.50 29.16 41.33 52.94 61.00 62.52 65.29 52.90 42.94 29.23 22.45 42.00
193820.65 32.39 39.16 44.23 51.61 59.93 65.16 65.81 58.57 45.94 34.00 24.52 45.16
193927.13a21.75 33.16 39.30 54.68 64.47 65.55 61.81 59.33 45.48 32.37 27.13 44.35
19408.48 26.28 30.71 40.60 49.32 62.83 64.35 64.77 52.73 47.84 32.17 29.77 42.49
194125.35 20.29 26.65 45.90a55.45 63.37 64.94 63.55 59.07 50.68 35.80 31.71 45.23
194220.32 22.32 35.81 45.87 53.26 63.50 66.94 63.74 55.83 46.06 36.77 20.65 44.26
194321.81 24.43 27.19 39.87 53.45 66.20 65.87 66.10 52.50 44.03 30.34a21.19 42.75
194425.87 26.14 29.52 41.86a58.06 -----z-----z-----z-----z-----z34.06l17.14b33.10f
194517.40a23.89a40.77 44.27 46.77 55.38a-----z-----z-----z-----z-----z-----z38.08f
194613.82t25.96 43.61 43.73 51.03 61.90 64.23 59.23 54.47 47.10 37.07 28.19 46.96a
194725.68 17.04 26.42 41.90a48.84 59.90 60.42 69.94 57.03 50.94 31.30 26.45 42.99
194814.42 23.21 32.77 46.37 50.16 60.90a65.10b62.00 57.67 41.77a37.10 28.10b43.30
194925.10 26.39 32.00 41.18b53.55b64.54f70.31b63.46e49.77 48.97a34.70 28.14b43.05a
195028.55 24.23b29.94 37.45a53.96d60.88d61.00c59.07d58.82m48.94 31.92e14.06 40.91a
195123.03 24.82 29.96f40.77d-----z59.83f64.79c62.08f52.00d46.76b28.38a22.87 37.93d
195225.29 29.17 30.77 41.23 52.64c66.37 67.15e61.07d53.11u35.19e33.50b28.52 42.81a
195327.45 27.50 33.77 39.36e52.62b65.30c66.32l61.57c53.77d45.74 34.00 24.58 42.33a
195422.42 28.39 27.23 45.79b46.07c64.13 67.00 64.32 58.33 46.68 32.47 25.48 44.03
195518.58 21.21 29.71 47.13 52.97 57.13 68.55 64.06 55.15c44.17b27.97 18.23 42.07
195616.74 24.28 29.42 37.97 52.55 60.73 62.81 61.71 50.17 45.81 30.31a30.39 41.91
195715.52 29.36 31.00a44.90 51.07a61.43 64.52 60.97 52.40 39.10 31.33 27.48 42.42
195820.03b14.39 28.68 39.97 49.03 54.97 63.48 62.13 54.45a42.21b35.03 16.10 40.04
195914.90 22.75 30.26 40.79a56.16 60.84e62.35e65.97 55.21a42.90 26.27 29.52 42.33
196023.13 20.48 14.50a44.75b51.26 61.77 64.16 65.84 61.60 46.52 35.03 19.23 42.36
196117.87 27.67a36.87 39.50 47.97 59.67 65.03 63.45 59.73 47.42 35.89b23.23 43.69
196214.61 25.00 30.42 41.63 60.32 62.30 64.03 63.16 55.50 49.55 35.47 19.81 43.48
196312.06 14.82 36.52 45.97 51.81 62.30 64.35 62.10 55.97 52.71 37.80 12.61 42.42
196424.61 23.76 31.52 46.00 56.71 63.90 65.74 62.35 56.67 41.97 38.13 24.77 44.68
196521.48 22.29 25.77 45.80 58.52 61.53 64.19 62.65 59.47 46.10 38.57 32.90a44.94
196616.68 23.71 34.06 42.50 49.39 61.93 69.19 62.45 55.80 43.26 36.30 26.58 43.49
196724.65 19.67a35.68 46.40 49.81 64.17 63.23 60.13 54.57 45.68 32.97 27.42 43.70
196818.74 18.76 34.94 44.47 51.35 64.57 66.68 66.65 57.60 46.81 37.37 25.29 44.43
196918.97 26.86 27.87 45.30 54.84 61.31a69.06 63.00 55.50 45.80a31.43 23.27a43.60
197012.58 21.43 31.32 46.00 56.77 62.47 65.65 64.90 63.55s47.14c34.20 27.81 42.75a
197115.74 22.46 29.61 41.13 52.50e67.00 64.52 63.00 59.57 52.77 35.43 33.00g45.79a
197219.10 22.71a32.90 43.67 56.42 59.50 66.03 65.32 60.20 44.19 34.93 24.77 44.15
197324.00 26.07 42.58 45.07 53.08g64.23 68.58 67.45 62.77 52.10 37.61b22.92e46.67a
197421.60a26.29 36.84 47.10 55.71 59.00 65.94 62.53a50.54b43.52 34.77 27.52 44.28
197524.74 23.74a29.53a40.57 55.68 63.63 63.00 65.55 53.13 45.67a37.93a25.80a44.08
197615.93b29.79 35.71 43.07 48.19 59.73 64.35 59.90 52.93 39.71 24.93 16.55 40.90
19774.20a20.32 37.57a47.67 58.35 60.43 67.45 64.58 59.31a43.07a36.03 19.39 43.20
19789.32 9.46 26.45 43.57 50.94 62.14a65.39 63.71 58.93 43.00 37.83a25.35 41.34
19798.19 10.86 32.43a41.27 49.93a60.50 63.97 64.45 55.27 44.93a33.63 27.81 41.10
198021.10 15.82a29.48 41.07 53.16 60.20 69.16 67.94 58.28a41.65 33.17a25.97 43.08
198117.39 23.75 30.97 47.97 49.42 64.97 67.00 63.61 55.73 44.52 36.03 21.19e43.55
19829.00b17.11 32.13a37.80 57.84 57.20 67.26 61.17a55.83 45.71 36.83 33.62b42.63
198324.52 27.71 33.45 39.90 50.52 61.70 68.06 68.55 57.03 48.50a37.97 13.26 44.26
198415.60a29.38 26.35 42.27 50.52 65.90 63.39 65.06 55.17a52.52 33.70 30.23a44.17
198512.39 18.85a36.28b48.10 55.23 60.60 65.20a63.48 57.53 49.55 38.13 14.71 43.34
198621.81 24.74a35.00 45.73 55.90 64.63 69.55 60.13 60.93 47.58 32.90 26.00 45.41
198720.19 27.68 35.45b41.60 58.13 65.00 67.61 66.81 57.48a39.29 38.97a29.16 45.61
198816.94 17.41 32.84 40.87 52.06 59.77 66.61 67.29 57.96b39.19 35.67 23.06 42.47
198929.13 17.92c32.84 42.50 50.00 61.93 66.90a64.26 54.37 47.13a32.77 10.58 42.53
199030.03a30.04 37.55 42.07 51.55 63.20 64.97 62.23a58.73 42.65 38.57 22.65 45.35
199118.97 27.25 35.42 48.47 60.52 64.60 66.23 64.71 56.77 48.07a32.10a28.17a45.94
199226.71 30.32a35.73a41.52c52.13 58.43 65.42 58.90 55.27 44.06 38.14b25.37a44.33
199321.45 20.85a30.94 41.63 54.19 62.60 69.27a66.16 54.30 42.48 33.37 27.48 43.73
199415.32 21.36 32.74 43.93a48.68 63.83 64.10 61.10 55.07a46.70a39.47 31.39 43.64
199523.07a21.68 35.68 43.34a52.26 61.53 67.45 69.55 53.57 45.90 27.97 20.74 43.56
199616.55 22.89a25.84 39.67 54.32 62.77 62.61 63.97a54.73 45.61 29.37 26.87 42.10
199715.60a29.11 34.52 38.00 47.71 62.63 65.23 63.00 56.77 45.65 32.83 26.65 43.14
199828.27a34.32 34.40a44.97 57.58 63.70 66.39 66.13 60.37 46.81 38.07 27.48 47.37
199920.43a30.29 29.71 46.30 52.65 63.28a69.19 61.39 52.00 44.16 38.73 26.45b44.55
200020.77 31.07 35.28b42.03a54.65 61.80 63.58 65.23a55.57 47.71 33.37 11.40a43.54
200119.23a24.73b28.48 49.37 54.52 60.20 65.87 64.42 53.97 44.77 38.77 29.13 44.45
200226.33a25.57 30.90 44.76a49.90 64.23 68.20a66.42 58.50 43.81 32.50b26.55 44.81
200316.00 19.29 33.63a44.87 52.23 57.30 64.65 64.55 53.57 44.67a38.83 27.61 43.10
200418.30a24.14 36.90 44.83 58.26 60.43 64.37a58.55 55.77 47.16 39.90 25.00 44.47
200523.28b28.93 30.23 44.87 48.77 63.10 66.10 66.90 60.31a45.77 35.83 22.07a44.68
200632.30a23.61 34.35 46.77 53.06 61.30 67.77 65.97 54.90a41.70a36.13 29.39 45.60
200724.40a14.36 41.10 40.30 57.90 62.33 62.23 69.19 58.23 52.03 33.70 27.17b45.25
2008-----z-----z-----z-----z-----z-----z-----z63.44v58.75n48.94m33.72a21.07c27.40j
200914.45 25.04b41.64q45.00b53.03 65.10a62.69b62.48 56.21a42.84 40.10 25.13a44.73a
201017.40a20.26a35.63a49.25b56.61 66.57b68.90 67.45 59.10 44.59b34.66a20.19 45.05
201118.13 25.61 35.80a47.64e54.63a65.38a71.53a65.61 55.83 45.10a40.52a31.37a46.43
201224.55 29.66 47.82c45.97 59.55b61.00a71.35 62.90a55.28a44.87 32.34a32.35 47.30
201321.97 24.59a28.87 44.57b57.26 62.77 63.84 62.80a58.47 45.83a32.80e21.36c43.76
201413.04f13.21 26.53a46.77 54.97b68.41a64.69b64.94 54.30 44.68f27.86b27.15d44.88b
201518.27a12.37a29.37d44.21a56.86b64.83 66.00 62.97a58.62a46.55b38.83a36.35 44.60
201620.97a26.52b42.77a44.83a52.86b64.78c67.39c68.48d61.21b51.38b38.90a23.77a46.99
201725.46e35.20c35.71g49.62a54.04e62.26g67.77e62.59b57.96e52.21g32.76e19.61c45.00c
201815.85e22.67d26.57a31.89b61.07b66.62a65.94 67.10 62.59h46.63a30.08d30.19d42.24a
201919.68 25.69b30.19d44.52a54.97a62.86a66.61c65.29 62.21a43.46c27.46b28.93c44.32
202027.04c27.11b36.46g39.88e51.63a61.90 67.55 62.50a55.48a41.50a37.93a26.70a45.38a
202123.30a12.89 35.43a42.45a50.10a59.77 67.52 67.97 61.87 55.10a36.47 37.55 45.87
202217.20a18.46d34.97 43.38a57.21c62.57 66.30a63.87a59.17g-----z-----z-----z45.49d
Period of Record Statistics
MEAN20.41 22.99 32.55 42.89 52.98 61.76 65.54 63.72 56.56 45.39 34.29 24.56 43.54
S.D.5.61 5.46 4.76 3.26 3.57 2.84 2.33 2.67 3.16 3.46 3.69 5.21 1.54
SKEW-0.50 -0.34 0.06 -0.36 -0.04 -0.35 0.03 0.08 -0.22 -0.12 0.00 -0.38 -0.02
MAX32.30 35.20 47.82 50.43 61.07 68.41 71.53 70.65 62.77 55.10 44.97 37.55 47.37
MIN3.29 9.46 14.50 31.89 44.19 54.97 59.61 56.52 47.13 34.90 24.93 10.58 38.75
YRS124 126 122 125 124 121 121 121 117 120 123 123 104