Weather WorldGrantham, PA 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Grantham, PA Weather Forecast
Grantham, PA Weather Forecast Date: 430 AM EDT Thu Sep 24 2026
The area/counties/county of: Cumberland, including the city of Carlisle.or toggle through each period.
Today... Mostly sunny. Highs in the mid 60s. Northeast winds 5 to 10 mph.
Tonight... Partly cloudy. Lows in the mid 40s. North winds around 5 mph.
Friday... Sunny. Highs in the lower 70s. North winds 5 to 10 mph with gusts up to 20 mph.
Friday Night... Mostly clear. Lows around 50. North winds 5 to 10 mph with gusts up to 20 mph.
Saturday... Sunny. Highs in the lower 70s. Northwest winds 5 to 10 mph with gusts up to 25 mph.
Saturday Night... Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s.
Sunday... Partly sunny. Highs in the upper 60s.
Sunday Night... Mostly cloudy. Lows in the lower 50s.
Monday... Partly sunny. Highs around 70.
Monday Night... Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 50s.
Tuesday... Mostly sunny. Highs in the lower 70s.
Tuesday Night... Partly cloudy. Lows in the lower 50s.
POP = Probability of Precipitation
Grantham Radar Loop
Use the map search tool if you want to place a location marker on the radar map...