Sunbury, PA Weather Tomorrow

Tomorrow's weather forecast for Sunbury is supported by a complete 5 day outlook covering daily precipitation forecasts, changing sky conditions, daytime highs, overnight lows, Fahrenheit and Celsius temperatures, sunrise, sunset, wind chill, and local wind details for the Sunbury area and around Northumberland county, Pennsylvania.
Updated: Thu Oct 8th 2026 3:15 AM EDT
Sunbury, PA Weather – 10-8 – Sunny
70° / 47°
Sunny
Daytime highs will reach 70°F with lows dropping to 47°F in Sunbury, where bright and sunny conditions. There's a very small chance of rainfall, only about 5%. Wind will be moderate, blowing around 15mph on average and gusts of 22.8mph at 11 AM. The humidity will be on the higher side, averaging about 66%, the maximum being 90% at 4 AM and 34% being its lowest at 2 PM. Barometric pressure is its highest of 30.08inHg at 11 PM, a lowest point of 29.82inHg at 4 AM with an avg 29.94inHg.
Sunbury, PA Weather – 10-9 – Sunny
67° / 41°

Weather Tomorrow

Sunny
Bright and sunny conditions in Sunbury, with a high of 67°F and a low of 41°F. There's a very small chance of rainfall, only about 5%. Wind will be moderate, blowing around 11mph on average and gusts of 16.1mph at 3 PM. The humidity will be on the higher side, averaging about 64%, the maximum being 86% at 7 AM and 38% being its lowest at 4 PM. Barometric pressure is its highest of 30.34inHg at 11 PM, a lowest point of 30.09inHg at 12 AM with an avg 30.2inHg.
Sunbury, PA Weather – 10-10 – Overcast
67° / 45°
Overcast
Sunbury is set for overcast with temperatures peaking at 67°F and dipping to 45°F. There might be light rainfall having a 17% chance. Winds will be light at 10mph and gusts of 20.8mph at 7 PM. The humidity will be on the higher side, averaging about 67%, the maximum being 86% at 11 PM and 49% being its lowest at 1 PM. Barometric pressure is its highest of 30.46inHg at 9 AM, a lowest point of 30.36inHg at 12 AM with an avg 30.41inHg.
Sunbury, PA Weather – 10-11 – Light Rain
61° / 51°
Light Rain
Periods of rain are likely in Sunbury, with a high of 61°F and a low of 51°F. The chance of rain is 94% with an estimated 0.99in. Wind will be moderate, blowing around 13mph on average and gusts of 31.1mph at 9 PM. High humidity with average of 96% is anticipated, the maximum being 98% at 11 PM and 90% being its lowest at 8 AM. Barometric pressure is its highest of 30.4inHg at 12 AM, a lowest point of 29.91inHg at 11 PM with an avg 30.22inHg.
Sunbury, PA Weather – 10-12 – Fog
67° / 55°
Fog
Fog is in the forecast for Sunbury, with a high of 67°F and a low of 55°F. Rainfall predicted to have a 61% chance with an estimated 0.02in. Winds will be light at 10mph and gusts of 22.2mph at 12 AM. High humidity with average of 93% is anticipated, the maximum being 99% at 4 AM and 81% being its lowest at 5 PM. Barometric pressure is its highest of 29.88inHg at 12 AM, a lowest point of 29.78inHg at 7 AM with an avg 29.83inHg.
Sunbury, PA Weather – 10-13 – Mist
73° / 51°
Mist
Sunbury could see mist with daytime highs of 73°F and nighttime lows near 51°F. The chance of rain is 82% with an estimated 0.27in. Wind will be moderate, blowing around 15mph on average and gusts of 32.9mph at 8 PM. High humidity with average of 87% is anticipated, the maximum being 97% at 8 AM and 69% being its lowest at 2 PM. Barometric pressure is its highest of 29.86inHg at 1 AM, a lowest point of 29.6inHg at 5 PM with an avg 29.73inHg.

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