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September Normals for Stampede Pass, WA

< August October > Day Temperatures (°F) Precipitation (in) Degree Days Min Max Avg Heating Cooling 1 49 70 60 0.12 6 -- 2 49 70 59 0.12 6 -- 3 49 70 59 0.13 6 -- 4 48 70 59 0.13 6 -- 5 48 69 59 0.13 7 -- 6 48 69 59 0.14 7 -- 7 48 69 59 0.14 7 -- 8 48 69 58 0.14 7 -- 9 48 69 58 0.15 7 -- 10 47 68 58 0.15 8 0 11 47 68 58 0.15 8 0 12 47 68 57 0.15 8 0 13 47 68 57 0.16 8 0 14 47 67 57 0.16 8 0 15 46 67 57 0.16 9 0 16 46 67 57 0.16 9 0 17 46 67 56 0.17 9 0 18 46 66 56 0.17 9 0 19 46 66 56 0.17 9 0 20 45 66 56 0.17 10 0 21 45 65 55 0.18 10 0 22 45 65 55 0.18 10 0 23 45 65 55 0.18 10 0 24 45 65 55 0.18 10 0 25 45 64 54 0.18 11 0 26 44 64 54 0.18 11 0 27 44 64 54 0.18 11 0 28 44 63 54 0.19 11 0 29 44 63 54 0.19 12 0 30 43 63 53 0.19 12 0 Month 46 67 57 4.8 262 9 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