Expires:202512220600;;994715 FPUS53 KLSX 212259 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 459 PM CST Sun Dec 21 2025 ILZ058-059-098-099-220600- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 459 PM CST Sun Dec 21 2025 .TONIGHT...Mostly clear this evening, then becoming partly cloudy. Lows in the upper 20s. Southeast winds 5 to 10 mph. .MONDAY...Mostly sunny in the morning, then becoming mostly cloudy. Highs in the lower 50s. South winds 10 to 15 mph. .MONDAY NIGHT...Mostly cloudy in the evening, then clearing. Not as cool. Near steady temperature in the mid 40s. South winds 5 to 10 mph. .TUESDAY...Sunny. Highs around 60. Southwest winds around 5 mph, becoming northwest in the afternoon. .TUESDAY NIGHT...Mostly clear in the evening, then becoming mostly cloudy. Lows in the mid 40s. East winds 5 to 10 mph. .WEDNESDAY...Mostly cloudy. Highs in the upper 60s. .WEDNESDAY NIGHT...Partly cloudy. Not as cool with lows in the mid 50s. .CHRISTMAS DAY...Partly sunny. Highs in the lower 70s. .THURSDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows in the lower 50s. .FRIDAY...Sunny, cooler with highs in the lower 60s. .FRIDAY NIGHT AND SATURDAY...Mostly cloudy. Lows in the lower 40s. Highs in the upper 50s. .SATURDAY NIGHT...Mostly cloudy. A slight chance of rain in the evening. Much cooler with lows in the upper 20s. Chance of rain 20 percent. .SUNDAY...Sunny. Much cooler with highs around 40. $$