Williamson- Including the city of Herrin 229 AM CDT Sat Apr 20 2024 .OVERNIGHT...Partly cloudy. Near steady temperature in the mid 40s. Northwest winds around 5 mph. .SATURDAY...Sunny. Highs in the lower 60s. North winds 10 to 15 mph. .SATURDAY NIGHT...Mostly cloudy. Lows in the upper 30s. North winds 5 to 10 mph. .SUNDAY...Sunny. Highs in the lower 60s. North winds 5 to 10 mph. .SUNDAY NIGHT...Clear. Areas of frost after midnight. Lows in the mid 30s. Northwest winds 5 to 10 mph. .MONDAY...Areas of frost in the morning. Sunny. Highs in the upper 60s. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s. .TUESDAY AND TUESDAY NIGHT...Partly cloudy. A chance of showers. Highs around 70. Lows in the upper 40s. Chance of rain 30 percent. .WEDNESDAY...Mostly sunny. Highs in the upper 60s. .WEDNESDAY NIGHT...Mostly clear. Lows in the lower 40s. .THURSDAY...Mostly sunny. Highs in the upper 60s. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows around 50. Chance of rain 30 percent. .FRIDAY...Partly sunny with a chance of showers. Highs in the mid 70s. Chance of rain 40 percent. $$