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Yearly Normals for Saint Mary, MT

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 9 33 21 0.64 1365 0 Feb 13 37 25 0.58 1115 0 Mar 20 44 32 0.88 1036 0 Apr 28 54 41 1.24 733 0 May 35 63 49 2.94 495 0 Jun 41 70 56 3.02 281 6 Jul 45 77 61 2.03 160 28 Aug 44 77 61 2.08 177 36 Sep 37 67 52 1.72 411 12 Oct 30 57 44 0.93 668 0 Nov 19 42 31 0.88 1036 0 Dec 12 34 23 0.8 1310 0 Year 28 54 41 17.74 8787 82 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather