WASHINGTON COUNTY ZONE FORECAST

 ...HEAT ADVISORY IN EFFECT UNTIL 9 PM MDT THIS EVENING...  .REST OF TONIGHT...Mostly cloudy in the evening then becoming partly cloudy. Chance of thunderstorms in the evening, then a slight chance of thunderstorms in the late evening and early morning. Lows in the upper 60s. Southwest winds 10 to 15 mph with gusts to around 25 mph. Chance of thunderstorms 30 percent. .TUESDAY...Mostly sunny. A 10 percent chance of thunderstorms in the afternoon. Highs in the upper 90s. Northwest winds 10 to 20 mph with gusts to around 30 mph. .TUESDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms in the evening, then mostly clear after midnight. Lows in the lower 60s. North winds 10 to 15 mph with gusts to around 35 mph shifting to the northeast after midnight. .WEDNESDAY...Mostly sunny with a 10 percent chance of thunderstorms. Highs in the 90s. Southeast winds 10 to 15 mph with gusts to around 30 mph. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows in the mid 60s. Southwest winds 10 to 20 mph with gusts to around 30 mph. .THURSDAY THROUGH FRIDAY...Mostly clear with a 10 percent chance of thunderstorms. Highs in the mid to upper 90s. Lows in the lower to mid 60s. .FRIDAY NIGHT AND SATURDAY...Partly cloudy with a 20 percent chance of thunderstorms. Lows in the mid 60s. Highs in the upper 90s. .SATURDAY NIGHT AND SUNDAY...Partly cloudy with a 30 percent chance of thunderstorms. Lows in the mid 60s. Highs in the lower 90s. .SUNDAY NIGHT...Mostly cloudy with a 40 percent chance of thunderstorms. Lows in the lower 60s. .MONDAY...Partly cloudy with a 40 percent chance of thunderstorms. Highs in the lower 90s.