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Mercersburg, PA 7-Day Weather Forecast
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Mercersburg Weather Forecast
Mercersburg, PA Weather Forecast Date: 1030 PM EST Tue Mar 03 2026
Weather forecast for Mercersburg, PA
Tonight Lo: 35°F Lo: 2°C |
Tonight... Cloudy. Rain likely late this evening, then a chance of rain. Areas of fog. Lows in the mid 30s. Temperature rising into the lower 40s. Southwest winds around 5 mph. Chance of rain 70%. |
Wed Hi: 51°FHi: 11°C Lo: 45°F Lo: 7°C |
Wednesday... Areas of fog in the morning. Cloudy with a 50% chance of showers. Not as cool with highs in the lower 50s. Northeast winds around 5 mph. |
| Thu Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Thursday... Showers likely. Not as cool with highs in the mid 60s. South winds around 5 mph. Chance of rain 70%. |
Fri Hi: 70°FHi: 21°C Lo: 50°F Lo: 10°C |
Friday... Partly sunny. Unseasonably warm with highs around 70. |
Sat Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Saturday... Partly sunny. A chance of showers in the afternoon. Warm with highs in the mid 60s. Chance of rain 50%. |
Sun Hi: 61°FHi: 16°C Lo: 51°F Lo: 11°C |
Sunday... Mostly sunny. Highs in the lower 60s. |
| Mon Hi: 69°FHi: 21°C Lo: 49°F Lo: 9°C |
Monday... Mostly sunny. Warm with highs in the upper 60s. |
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