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Yearly Normals for Hays, MT

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 8 31 19 0.74 1422 0 Feb 12 36 24 0.5 1148 0 Mar 20 44 32 1.16 1021 0 Apr 30 56 43 1.6 658 0 May 39 66 53 2.72 388 7 Jun 46 75 60 2.6 178 36 Jul 50 81 65 1.69 87 98 Aug 49 80 65 1.14 130 119 Sep 40 70 55 1.42 329 27 Oct 31 59 45 0.93 624 0 Nov 18 42 30 0.86 1051 0 Dec 10 34 22 0.76 1334 0 Year 29 56 43 16.12 8370 287 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather