WASHINGTON COUNTY ZONE FORECAST

 ...FLOOD WATCH IN EFFECT UNTIL 10 PM MDT THIS EVENING... ...SEVERE THUNDERSTORM WATCH 584 IN EFFECT UNTIL 9 PM MDT THIS EVENING...  .TONIGHT...Showers likely and chance of thunderstorms in the evening, then a chance of showers after midnight. Some thunderstorms may be severe with heavy rainfall, then some thunderstorms may produce heavy rainfall during the late evening hours. Lows in the upper 50s. Chance of rain 60 percent. .SUNDAY...Partly cloudy. Slight chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the afternoon. Highs near 80. Southeast winds 10 to 15 mph with gusts up to 20 mph in the afternoon. Chance of precipitation 20 percent. .SUNDAY NIGHT...Partly cloudy. Slight chance of thunderstorms in the evening. Some thunderstorms may produce heavy rainfall in the evening. Lows in the upper 50s. South winds 10 to 15 mph with gusts up to 20 mph. Chance of precipitation 20 percent. .MONDAY...Mostly sunny. Highs in the mid to upper 80s. .MONDAY NIGHT...Mostly clear. Lows around 60. South winds 10 to 15 mph with gusts up to 20 mph. .TUESDAY...Partly cloudy. Highs near 90. .TUESDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms. Lows in the upper 50s. .WEDNESDAY...Mostly cloudy with a 40 percent chance of thunderstorms. Highs in the lower to mid 80s. .WEDNESDAY NIGHT...Partly cloudy with a 40 percent chance of thunderstorms. Lows in the upper 50s. .THURSDAY THROUGH FRIDAY...Mostly clear. Highs 85 to 91. Lows in the upper 50s. .FRIDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows around 60. .SATURDAY...Mostly sunny with a 20 percent chance of thunderstorms. Highs near 90.