Fri Feb 21 11:45:31 PM EST 2025 Jefferson- Including the city of Mount Vernon 1043 PM CST Fri Feb 21 2025 .TONIGHT...Mostly clear late this evening, then becoming mostly cloudy. Cold with lows around 12. Calm winds, becoming southwest around 5 mph after midnight. .SATURDAY...Sunny. Highs in the mid 30s. Southwest winds around 5 mph. .SATURDAY NIGHT...Mostly clear. Lows in the lower 20s. Southwest winds around 5 mph. .SUNDAY...Sunny. Highs in the upper 40s. Southwest winds 5 to 10 mph. .SUNDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 30s. Southwest winds 5 to 10 mph. .MONDAY AND MONDAY NIGHT...Partly cloudy. Highs in the mid 50s. Lows around 40. .TUESDAY...Sunny. Highs in the upper 50s. .TUESDAY NIGHT...Partly cloudy. Lows in the upper 30s. .WEDNESDAY...Partly sunny. A chance of rain in the afternoon. Highs in the upper 50s. Chance of rain 40 percent. .WEDNESDAY NIGHT...Mostly cloudy with a 30 percent chance of rain. Lows in the mid 30s. .THURSDAY...Partly sunny. Highs in the upper 40s. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows in the lower 30s. Highs in the lower 50s.