As stated in the Noise Guidebook, âSTC is used as a. measure of a material's ability to reduce sound,â and. effectively mitigate any adverse noise levels that. could impede a person's use of a residential or. commercial structure. The higher the STC value, the. greater the sound attenuation and presumably the.
1 Record Coldest year in Pennsylvania - 1917 / Avg temperature 46.08 degrees. 2  Pennsylvania average Summer temperature (June, July, August) 68.6 F degrees, 34th warmest U.S. summer state. Pennsylvania average Summer temperature (June, July, August) 68.6 F degrees, 34th warmest U.S. summer state. 2  Pennsylvania average Winter temperature (December, January, February) 28.4 F degrees, 20th coldest U.S. winter state.
For an interesting look at Pennsylvania precipitation levels view this precipitation map. Current Weather Conditions: In these selected cities.... Seasonal Temperature Averages: ERIE . HIGH TEMPERATURES ( Fahrenheit/Celsius ) (Jan) 57/14 (Feb) 33/0 (Mar) 78/26 (Apr) 77/25 (May) 90/32 (Jun) 94/34 (Jul) 97/36 (Aug) 89/32 (Sep) 89/32 (Oct) 82/28 (Nov) 62/17 (Dec) 50/10 . LOW TEMPERATURES ( Fahrenheit/Celsius ) (Jan) 9/-13 (Feb) 1/-17 (Mar) 4/-15 (Apr) 23/-5