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Union, Pennsylvania Weather Forecast
Union, Pennsylvania Weather
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Weather Forecast for Union, Pennsylvania : Lancaster County
Issued: 7:06 pm EST Jan 22, 2026 Latitude: 39.840939 Longitude: -76.0605057 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
Cloudy on Tonight Partly Sunny on Friday Partly Sunny on Saturday 100% chance of freezing rain & snow on Sunday 40% chance of snow on Monday Sunny on Tuesday Partly Sunny on Wednesday Partly Sunny on Thursday
Low: 23°F High: 37°F High: 17°F High: 22°F High: 23°F High: 19°F High: 22°F High: 20°F
Low: 6 °F Low: 11°F Low: 17°F Low: 4°F Low: 6°F Low: 8°F  
Cloudy Partly Sunny Partly Sunny Freezing Rain & Snow Snow Sunny Partly Sunny Partly Sunny
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Current Conditions at
LANCASTER - (KLNS)
34°
Clear
as of 9:53 PM EST
Rel. Humidity: 37%
Dew Point: 10°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
6 MPH
250° West
Cloud Level(s): Clear
Current Conditions at
WILMINGTON - (KILG)
43°
Feels like 35°F
Clear
as of 9:51 PM EST
Rel. Humidity: 24%
Dew Point: 9°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
15 MPH
Gust: 23 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
READING - (KRDG)
36°
Clear
as of 9:54 PM EST
Rel. Humidity: 27%
Dew Point: 5°F
Visibility: 10 Miles
Pressure: 30.11 in.
Flight Rule: VFR
Wind Data
8 MPH
280° West
Cloud Level(s): Clear
Cloudy on Tonight Tonight... Partly cloudy, with a low around 23. Light west wind.

Partly Sunny on Friday Friday... Partly sunny, with a high near 37. Light southwest wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 28 mph.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 6. Wind chill values as low as -5. Northwest wind 10 to 14 mph, with gusts as high as 26 mph.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 17. Wind chill values as low as -5. North wind 5 to 8 mph.

100% chance of snow Saturday Night Saturday Night... Snow, mainly after 1am. The snow could be heavy at times. Low around 11. Calm wind becoming northeast around 6 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

100% chance of freezing rain & snow Sunday Sunday... Snow before 1pm, then snow, possibly mixed with freezing rain and sleet. The snow could be heavy at times. High near 22. Chance of precipitation is 100%. New snow and sleet accumulation of 6 to 10 inches possible.

90% chance of snow Sunday Night Sunday Night... Snow. Low around 17. Chance of precipitation is 90%.

40% chance of snow Monday Monday... A chance of snow before 1pm. Partly sunny, with a high near 23. Chance of precipitation is 40%.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 4.

Sunny on Tuesday Tuesday... Sunny, with a high near 19.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 6.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 22.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 8.

Partly Sunny on Thursday Thursday... Partly sunny, with a high near 20.

Current Radar Image


Sun Almanac for Union, Pennsylvania
Sunrise: 07:20 AM
Sunset: 5:12 PM
Civil Sunrise:06:51 AM
Civil Sunset: 5:41 PM
Nautical Sunrise: 06:18 AM
Nautical Sunset: 6:14 PM
Astro Sunrise: 05:46 AM
Astro Sunset: 6:46 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.