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Yearly Normals for Swan Valley, MT

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 12 28 20 2.98 1386 0 Feb 16 36 26 2.38 1099 0 Mar 22 45 33 1.94 983 0 Apr 29 55 42 1.65 695 0 May 36 65 50 2.6 460 0 Jun 41 71 56 2.75 273 6 Jul 44 78 61 1.53 165 48 Aug 43 78 60 1.73 191 43 Sep 36 67 51 1.96 412 2 Oct 28 54 41 2.15 747 0 Nov 21 37 29 3.53 1087 0 Dec 15 29 22 3.54 1333 0 Year 29 53 41 28.74 8831 99 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather