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Yearly Normals for Gillette, WY

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 7 32 20 0.54 1399 0 Feb 14 39 27 0.55 1081 0 Mar 22 49 35 0.98 925 0 Apr 30 59 44 2.21 625 0 May 39 68 54 2.93 357 6 Jun 48 79 64 2.38 133 92 Jul 54 87 71 1.36 39 213 Aug 52 86 69 1.15 62 196 Sep 41 74 58 1.4 255 37 Oct 31 61 46 1.62 591 0 Nov 19 43 31 0.83 1028 0 Dec 9 34 22 0.56 1346 0 Year 30 59 45 16.51 7841 544 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather