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Yearly Normals for Boulder, MT

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 10 34 22 0.4 1331 0 Feb 14 40 27 0.3 1074 0 Mar 20 47 33 0.52 985 0 Apr 26 56 41 0.76 719 0 May 34 65 50 1.99 482 0 Jun 42 74 58 1.94 238 22 Jul 47 82 65 1.51 113 97 Aug 46 82 64 1.43 120 82 Sep 36 71 54 1.06 346 12 Oct 28 60 44 0.61 665 0 Nov 18 42 30 0.56 1050 0 Dec 11 35 23 0.43 1313 0 Year 28 57 42 11.51 8436 213 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather