Will I be cold?
Will I be cold in Pittsburgh in August?
Verdict
No — No, comfortable.
Lows stay near 60°F — you won't be reaching for the puffer.
Day vs. night
Day
80°F
Warm
Breathable fabrics; sunscreen matters more than a jacket.
Night
60°F
Comfortable
Comfortable outside without an extra layer.
Why
Pittsburgh in August averages highs of 80°F, lows of 60°F, 11 rainy days.
You can pack for the daytime temps and not worry about the evening dip.