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July Normals for Ottumwa, IA

< June August > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 63 84 74 0.16 0 8 2 64 84 74 0.16 0 9 3 64 84 74 0.17 0 9 4 64 84 74 0.17 0 9 5 64 84 74 0.17 0 9 6 64 84 74 0.17 0 9 7 64 85 74 0.17 0 9 8 65 85 75 0.17 0 10 9 65 85 75 0.17 0 10 10 65 85 75 0.17 0 10 11 65 85 75 0.17 0 10 12 65 85 75 0.17 0 10 13 65 85 75 0.17 0 10 14 65 85 75 0.17 0 10 15 65 85 75 0.17 0 10 16 65 85 75 0.17 0 10 17 65 85 75 0.17 0 11 18 65 85 75 0.17 0 11 19 66 85 76 0.16 0 11 20 66 86 76 0.16 0 11 21 66 86 76 0.16 0 11 22 66 86 76 0.16 0 11 23 66 86 76 0.16 0 11 24 66 86 76 0.16 0 11 25 66 86 76 0.15 0 11 26 66 85 76 0.15 0 11 27 66 85 76 0.15 0 11 28 66 85 76 0.15 -- 11 29 66 85 75 0.15 -- 11 30 65 85 75 0.14 -- 11 31 65 85 75 0.14 -- 11 Month 65 85 75 5.03 4 317 Data Controls Monthly: January February March April May June July August September October November December   | Yearly Related Maps Related Links Normal High Temperatures Normal Low Temperatures Normal Mean Temperatures Normal Precipitation - Forecast - Past Weather