10-Day Weather Forecast - Northumberland, PA

Mostly sunny. Much colder with highs around 10 above. Northwest winds 15 to 20 mph with gusts up to 45 mph. Wind chill values as low as 20 below.

Partly cloudy. Cold with lows around zero. Northwest winds 10 to 15 mph. Gusts up to 40 mph decreasing to 30 mph after midnight. Wind chill values as low as 15 below.

Sunny. Highs around 20. Northwest winds 5 to 10 mph with gusts up to 25 mph. Wind chill values as low as 14 below in the morning.

Mostly clear in the evening then becoming partly cloudy. Cold with lows around zero. Northwest winds around 5 mph. Gusts up to 20 mph in the evening.

Partly sunny in the morning then becoming mostly cloudy. Highs in the mid 20s.

Mostly cloudy. Not as cold with lows around 10 above.

Partly sunny. Not as cool with highs in the mid 30s.

Mostly cloudy. Not as cool with lows in the lower 20s.

A chance of freezing rain in the morning. Cloudy with a chance of rain and snow. Highs in the mid 30s. Chance of precipitation 50 percent.

Mostly cloudy. A chance of snow and freezing rain in the evening. Lows in the lower 20s. Chance of precipitation 50 percent.

Mostly cloudy. Highs in the lower 30s.

Mostly cloudy. Lows 15 to 20.

Mostly sunny in the morning then becoming mostly cloudy. Highs in the lower 30s.

Clear. Low temperature around 23F. Dew point will be around 18F with an average humidity of 74%. Winds will be 2 mph from the N.

Partly cloudy. High temperature around 35F. Dew point will be around 21F with an average humidity of 68%. Winds will be 2 mph from the NE.

Cloudy. Low temperature around 27F. Dew point will be around 23F with an average humidity of 79%. Winds will be 3 mph from the E.

Cloudy. High temperature around 37F. Dew point will be around 26F with an average humidity of 75%. Winds will be 2 mph from the E.

Cloudy. Low temperature around 27F. Dew point will be around 23F with an average humidity of 78%. Winds will be 2 mph from the NW.