WASHINGTON COUNTY ZONE FORECAST

 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM MDT THIS EVENING...  .TONIGHT...Mostly clear. A 20 percent chance of thunderstorms early in the evening. Lows near 70. South winds 15 to 25 mph with gusts to around 35 mph. .SUNDAY...Mostly sunny. A 30 percent chance of thunderstorms in the afternoon. Highs in the upper 90s. Southwest winds 10 to 20 mph shifting to the north in the afternoon. Gusts up to 30 mph. .SUNDAY NIGHT...Mostly cloudy with a 30 percent chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 60s. North winds 10 to 15 mph shifting to the west after midnight. .MONDAY...Partly cloudy with a 10 percent chance of thunderstorms. Highs in the mid 80s. Northeast winds 15 to 25 mph with gusts to around 35 mph. .MONDAY NIGHT...Partly cloudy with a 30 percent chance of thunderstorms. Lows around 60. Southeast winds 10 to 15 mph with gusts to around 30 mph. .TUESDAY AND TUESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the upper 80s. Lows in the lower 60s. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs in the mid 90s. Lows in the mid 60s. .THURSDAY...Mostly sunny. Highs 98 to 102. .THURSDAY NIGHT AND FRIDAY...Mostly clear. A 10 percent chance of thunderstorms. Lows in the mid 60s. Highs in the upper 90s. .FRIDAY NIGHT AND SATURDAY...Partly cloudy with a 20 percent chance of thunderstorms. Lows in the upper 60s. Highs in the upper 90s.