10-Day Weather Forecast - Herndon, PA

Mostly sunny. Highs in the mid 70s. North winds around 5 mph.

Mostly clear. Patchy fog after midnight. Lows in the lower 50s. North winds around 5 mph.

Patchy fog in the morning. Sunny. Highs in the mid 70s. Light and variable winds, becoming north around 5 mph in the afternoon.

Mostly clear. Patchy fog after midnight. Lows in the mid 50s.

Patchy fog in the morning. Mostly sunny. Highs around 80.

Partly cloudy in the evening, then becoming mostly cloudy. Lows around 60.

Partly sunny. Very warm with highs in the mid 80s.

Partly cloudy with a 40 percent chance of showers. Humid with lows in the upper 60s.

Partly sunny. Humid with highs in the upper 70s.

Mostly cloudy. Cooler with lows in the upper 50s.

Mostly sunny. Highs in the mid 70s.

Clear. Low temperature around 53F. Dew point will be around 51F with an average humidity of 76%. Winds will be 1 mph from the N.

Sunny. High temperature around 70F. Dew point will be around 53F with an average humidity of 72%. Winds will be 1 mph from the NW.

Clear. Low temperature around 54F. Dew point will be around 51F with an average humidity of 75%. Winds will be 1 mph from the E.

Sunny. High temperature around 72F. Dew point will be around 55F with an average humidity of 73%. Winds will be 1 mph from the S.

Clear. Low temperature around 57F. Dew point will be around 55F with an average humidity of 79%. Winds will be 2 mph from the S.