Allentown, Pennsylvania Weather:
Active Weather Warnings
Saturday, December 20, 2025
Cloudy Weather
Day 37°
Night 30°
Precipitation 3 %
Wind 7 mph
UV Index (0 - 11+) 2
Weather Forecast History
Last Year's Weather on This Day (December 20, 2024)
Snowy Weather

Day

34°

Night

28°

Wind

7 mph

UV Index

0

Precipitation

93 %

Weather Alerts and Warnings for

Moderate Expected Likely

Wind Advisory

Wind Advisory issued December 18 at 2:30PM EST until December 20 at 1:00AM EST by NWS Mount Holly NJ
Dec 19, 1:00 AM Dec 20, 1:00 AM
WHAT: Southwest winds 15 to 25 mph with gusts up to 45 mph
expected tonight through Friday morning. Winds turn to the
northwest behind a strong cold front Friday afternoon. There may
be a lull in the strongest wind gusts late Friday morning before
the cold front passes through the region. Wind gusts in the wake
of the front up to 50 MPH are possible.

WHERE: Portions of northern Delaware, central, northern,
northwest, and southern New Jersey, and east central and southeast
Pennsylvania.

WHEN: From 1 AM Friday to 1 AM EST Saturday.

IMPACTS: Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
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Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects, including any holiday decorations.
Updated: Dec 18, 4:48 PM Source: NWS Alert