Expires:202512212000;;953756 FPUS52 KGSP 210538 ZFPGSP Zone Forecast Product National Weather Service Greenville-Spartanburg SC 1238 AM EST Sun Dec 21 2025 SCZ103-212000- Greenville Mountains- Including the city of Glassy Mountain 1238 AM EST Sun Dec 21 2025 .OVERNIGHT...Mostly clear. Near steady temperatures in the mid 30s. West winds 5 to 10 mph. .SUNDAY...Mostly sunny. Highs in the mid 50s. North winds 5 to 10 mph. .SUNDAY NIGHT...Mostly clear. Lows in the mid 30s. North winds around 5 mph. .MONDAY...Mostly sunny. Highs in the upper 40s. Northeast winds around 5 mph, becoming southeast in the afternoon. .MONDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 30s. Southwest winds 5 to 10 mph. .TUESDAY...Mostly sunny. Highs in the lower 60s. .TUESDAY NIGHT...Mostly clear. Lows in the upper 40s. .WEDNESDAY...Mostly sunny. Highs in the mid 60s. .WEDNESDAY NIGHT...Mostly cloudy. Lows in the upper 40s. .CHRISTMAS DAY...Mostly sunny. Highs in the upper 60s. .THURSDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows around 50. .FRIDAY...Partly sunny. Highs in the upper 60s. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 40s. .SATURDAY...Partly sunny. Highs in the mid 60s. $$