WASHINGTON COUNTY ZONE FORECAST

 ...HEAT ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 9 PM MDT THIS EVENING...  .TODAY...Partly cloudy. A 10 percent chance of thunderstorms late in the afternoon. Highs 99 to 103. South winds 10 to 20 mph with gusts to around 30 mph. .TONIGHT...Mostly cloudy with a 20 percent chance of thunderstorms in the evening, then partly cloudy after midnight. Lows near 70. West winds 10 to 15 mph with gusts to around 25 mph. .TUESDAY...Mostly sunny. Highs in the upper 90s. Northwest winds 10 to 20 mph with gusts to around 30 mph. .TUESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows in the lower 60s. Northeast winds 10 to 15 mph with gusts to around 35 mph. .WEDNESDAY...Mostly sunny with a 10 percent chance of thunderstorms. Highs in the mid 90s. Southeast winds 10 to 15 mph with gusts to around 30 mph. .WEDNESDAY NIGHT...Partly cloudy with a 10 percent chance of thunderstorms. Lows in the mid 60s. .THURSDAY...Mostly sunny with a 10 percent chance of thunderstorms. Highs in the upper 90s. .THURSDAY NIGHT...Mostly clear with a 20 percent chance of thunderstorms. Lows in the mid 60s. .FRIDAY...Mostly sunny. Highs in the upper 90s. .FRIDAY NIGHT...Partly cloudy with a 10 percent chance of thunderstorms. Lows in the mid 60s. .SATURDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs in the upper 90s. .SATURDAY NIGHT AND SUNDAY...Mostly cloudy with a 30 percent chance of thunderstorms. Lows in the mid 60s. Highs in the lower 90s.