Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

New Castle Municipal Airport (KUCP)

Lat: 41.02° N Lon: 80.42° W Elev: 1072 ft.

Fair

76°F

24°C

Humidity 47%
Wind Speed NW 10 mph
Barometer 30.20 in (1023.4 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 18 Sep 3:56 pm EDT
Detailed forecast for

Mercer County

This Afternoon
Mostly sunny. Near steady temperature in the mid 70s. North winds 5 to 10 mph.
Tonight
Partly cloudy. Lows in the mid 50s. Northeast winds 5 to 10 mph.
Saturday
Partly sunny. A slight chance of showers in the afternoon. Highs in the mid 70s. East winds 5 to 10 mph. Chance of rain 20 percent.
Saturday Night
Mostly cloudy. Showers with a slight chance of thunderstorms after midnight. Lows in the lower 60s. Southeast winds 5 to 10 mph. Chance of rain 80 percent.
Sunday
Showers with highs in the lower 70s. Southwest winds 5 to 10 mph, becoming northwest in the afternoon. Chance of rain 90 percent.
Sunday Night
Mostly cloudy. Showers likely, mainly in the evening. Lows in the mid 50s. Chance of rain 70 percent.
Monday
Mostly cloudy. Highs in the upper 60s.
Monday Night
Considerable cloudiness with a 50 percent chance of showers. Lows in the lower 50s.
Tuesday
Considerable cloudiness with a chance of showers. Highs in the mid 60s. Chance of rain 50 percent.
Tuesday Night
Showers likely. Lows in the lower 50s. Chance of rain 60 percent.
Wednesday
Showers likely. Highs in the lower 60s. Chance of rain 60 percent.
Wednesday Night
Showers likely. Lows in the lower 50s. Chance of rain 60 percent.
Thursday
Mostly cloudy. A chance of showers in the morning. Highs in the mid 60s. Chance of rain 50 percent.



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202 PM EDT Fri Sep 18 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database