WASHINGTON COUNTY ZONE FORECAST

 ...HEAT ADVISORY IN EFFECT FROM 10 AM TO 9 PM MDT SUNDAY...  .REST OF TODAY...Mostly sunny. Highs 100 to 104. South winds 10 to 20 mph with gusts up to 30 mph. .TONIGHT...Partly cloudy. Slight chance of thunderstorms early in the evening. Lows near 70. South winds 10 to 20 mph with gusts up to 30 mph. Chance of precipitation 20 percent. .SUNDAY...Mostly sunny. Highs 101 to 105. West winds 10 to 15 mph with gusts up to 20 mph in the morning, becoming light. .SUNDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows near 70. .MONDAY...Mostly cloudy with a 50 percent chance of thunderstorms. Highs 96 to 100. Northeast winds 10 to 15 mph with gusts up to 25 mph. .MONDAY NIGHT...Mostly cloudy with a 50 percent chance of thunderstorms. Lows in the 60s. .TUESDAY...Mostly cloudy with a 30 percent chance of thunderstorms. Highs in the lower to mid 90s. .TUESDAY NIGHT...Showers likely and chance of thunderstorms. Lows in the lower 60s. Chance of rain 60 percent. .WEDNESDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the lower 90s. .WEDNESDAY NIGHT...Mostly cloudy with a 50 percent chance of thunderstorms. Lows in the lower 60s. .THURSDAY...Mostly sunny. Highs in the lower to mid 90s. .THURSDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows in the lower 60s. .FRIDAY...Mostly sunny. Highs in the lower 90s. .FRIDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows in the lower 60s. .SATURDAY...Mostly sunny. Highs in the lower to mid 90s.