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Yearly Normals for Rock Valley, IA

Month Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling Jan 5 26 16 0.37 1534 0 Feb 13 33 23 0.4 1182 0 Mar 24 45 35 1.53 941 0 Apr 35 61 48 2.45 512 5 May 48 73 61 3.06 197 56 Jun 57 82 70 3.68 28 167 Jul 61 85 73 3.18 13 272 Aug 59 83 71 3.19 22 207 Sep 49 76 63 2.14 135 58 Oct 37 63 50 1.83 461 1 Nov 23 43 33 1.24 963 0 Dec 10 29 20 0.46 1401 0 Year 35 58 47 23.53 7389 766 Data Controls Monthly | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather