What is today's weather forecast for Mercersburg, PA?

Today's forecast for Mercersburg shows a low of 28 degrees Fahrenheit. Mostly clear, with a low around 28.

What is the 7-day weather forecast for Mercersburg, PA?

The 7-day forecast for Mercersburg shows highs from 37 to 44 degrees and lows from 23 to 30 degrees Fahrenheit. Expect precipitation on 4 days with chances of 20% or higher.

Will it rain in Mercersburg, PA this week?

Yes, rain is possible in Mercersburg this week. Precipitation chances: Saturday (30% chance), Sunday (50% chance), Monday (30% chance), Tuesday (50% chance).

How accurate is the Mercersburg weather forecast?

WeatherForYou provides highly accurate Mercersburg forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Mercersburg, PA Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Switch to Metric Units

33°F
Feels Like 27°F

Humidity 61% Dew Point 21°F Wind WSW 7 MPH Gusts 9 Barometer 29.77 in.

Report from a personal weather station 1.5 mi. ENE of central Mercersburg
at 11:46 PM Thu, Nov 27, 2025

Point Forecast at a Glance

ThuNov 27

FriNov 28

SatNov 29

SunNov 30

50%

MonDec 1

TueDec 2

50%

WedDec 3

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 37°F to 44°F. Unsettled weather expected with wintry mix likely on at least 4 days.

Climate Context

This week's forecast shows temperatures running 8°F below the historical average for November-December. Normal highs for this period are around 48°F with lows around 30°F.

This Date in Weather History

1883 - Fire engines were called out in New York City and New Haven, CT, as a result of the afterglow of the sunset due to vivid red ash from the Krakatoa Volcano explosion in August.

Mercersburg, PA 7 Day Weather Forecast Details

Thursday Nov 27

Night: Mostly clear, with a low around 28. West wind 9 to 11 mph, with gusts as high as 26 mph.

Friday Nov 28

Day: Mostly sunny, with a high near 38. West wind 13 to 17 mph, with gusts as high as 31 mph.

Night: Mostly clear, with a low around 24. West wind 6 to 9 mph, with gusts as high as 20 mph.

Saturday Nov 29

Day: Mostly sunny, with a high near 41. West wind around 5 mph becoming calm in the morning.

Night: A chance of snow, mainly after 1am. Cloudy, with a low around 30. Calm wind becoming south 5 to 8 mph after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

Sunday Nov 30

Day: A chance of rain and snow before 1pm, then a chance of rain. Cloudy, with a high near 44. Chance of precipitation is 50%. Little or no snow accumulation expected.

Night: Mostly cloudy, with a low around 28.

Monday Dec 1

Day: Partly sunny, with a high near 40.

Night: A chance of snow after 1am. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.

Tuesday Dec 2

Day: A chance of rain and snow. Cloudy, with a high near 37. Chance of precipitation is 50%.

Night: A chance of rain. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.

Wednesday Dec 3

Day: Mostly sunny, with a high near 39.

Night: Mostly cloudy, with a low around 23.

Thursday Dec 4

Day: Partly sunny, with a high near 40.

About Mercersburg, PA

Mercersburg is a borough in Franklin County, Pennsylvania, United States. The borough is 72 miles (116 km) southwest of Harrisburg, the state capital. Due to its location in a rural area, it had a relatively large percentage of African-American workers who had been enslaved from the Revolution. It was called "Black Town" in the early 19th century before incorporation under its current name. Refugee African Americans escaping from slavery in the South also settled here, and the area was known as "Little Africa".

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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