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Yearly Normals for Garrison, MT

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 4 29 17 0.95 1498 0 Feb 9 35 22 0.65 1205 0 Mar 18 44 31 0.55 1050 0 Apr 24 55 39 0.85 771 0 May 31 64 47 1.76 549 0 Jun 37 72 54 1.67 322 3 Jul 40 80 60 1.15 189 25 Aug 38 80 59 1.24 201 22 Sep 30 70 50 0.99 460 2 Oct 22 57 39 0.82 794 0 Nov 15 39 27 0.96 1141 0 Dec 6 29 18 0.99 1467 0 Year 23 54 39 12.58 9647 52 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather