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...  .REST OF TODAY...Mostly sunny. Slight chance of thunderstorms late in the afternoon. Highs around 101. Chance of precipitation 10 percent. .TONIGHT...Mostly clear. Lows in the mid 60s. Southeast winds 10 to 15 mph with gusts up to 20 mph in the evening, becoming light. .SUNDAY...Mostly sunny. Highs around 104. Southeast winds 10 to 15 mph with gusts up to 20 mph in the afternoon. .SUNDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms. Some thunderstorms may produce gusty winds. Lows in the mid 60s. Southwest winds 10 to 15 mph with gusts up to 20 mph. .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 20 mph. .MONDAY NIGHT AND TUESDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Lows in the lower 60s. 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...Partly cloudy with a 40 percent chance of thunderstorms. Lows in the upper 50s. .THURSDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the mid 80s. .THURSDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Lows around 60. .FRIDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the upper 80s.