WASHINGTON COUNTY ZONE FORECAST

 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM MDT THIS EVENING... ...HEAT ADVISORY IN EFFECT FROM 10 AM TO 8 PM MDT SUNDAY...  .TONIGHT...Mostly clear. Slight chance of thunderstorms...some dry early in the evening. Lows in the mid 60s. .SUNDAY...Mostly sunny. Slight chance of thunderstorms...some dry in the afternoon. Highs around 103. West winds 10 to 15 mph in the morning, becoming light. .SUNDAY NIGHT...Mostly cloudy. Slight chance of thunderstorms in the evening. Lows in the upper 60s. South winds 10 to 15 mph with gusts up to 20 mph in the evening, becoming light. Chance of precipitation 20 percent. .MONDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the upper 90s. North winds 10 to 15 mph with gusts up to 25 mph. .MONDAY NIGHT...Mostly cloudy with a 40 percent chance of thunderstorms. Lows in the lower 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. .TUESDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs in the upper 80s. .TUESDAY NIGHT...Showers likely and chance of thunderstorms. Lows in the upper 50s. Chance of rain 60 percent. .WEDNESDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs in the lower 80s. .WEDNESDAY NIGHT...Mostly cloudy with a 40 percent chance of thunderstorms. Lows in the upper 50s. .THURSDAY...Partly cloudy with a 30 percent chance of thunderstorms. Highs in the lower to mid 80s. .THURSDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows around 60. .FRIDAY...Partly cloudy with a 40 percent chance of thunderstorms. Highs in the upper 80s. .FRIDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Lows in the upper 50s. .SATURDAY...Partly cloudy with a 40 percent chance of thunderstorms. Highs in the mid 80s.