National Weather Service Forecast for: Fountain Hills AZ
Issued by: National Weather Service Phoenix, AZ
Updated: 11:47 pm MST Jun 21, 2026
 
Overnight

Overnight: Partly cloudy, with a low around 73. Calm wind.
Partly Cloudy
 Monday

Monday: Sunny, with a high near 108. Calm wind becoming southwest around 5 mph in the afternoon.
Sunny
 Monday
Night
Monday Night: Mostly clear, with a low around 78. West wind around 5 mph becoming calm in the evening.
Mostly Clear
 Tuesday

Tuesday: Sunny and hot, with a high near 111. Calm wind becoming west around 5 mph in the afternoon.
Hot
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 81. West wind around 5 mph becoming calm in the evening.
Mostly Clear
 Wednesday

Wednesday: Mostly sunny and hot, with a high near 111. Light and variable wind becoming west southwest 5 to 10 mph in the afternoon.
Hot
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 82. West wind around 5 mph becoming calm in the evening.
Mostly Clear
 Thursday

Thursday: Sunny and hot, with a high near 111. Light and variable wind becoming west southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Hot
 Thursday
Night
Thursday Night: Mostly clear, with a low around 82. West southwest wind 5 to 10 mph becoming light and variable after midnight.
Mostly Clear
Lo 73 °F Hi 108 °F Lo 78 °F Hi 111 °F Lo 81 °F Hi 111 °F Lo 82 °F Hi 111 °F Lo 82 °F

 

Overnight
 
 Partly cloudy, with a low around 73. Calm wind.
Monday
 
 Sunny, with a high near 108. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
 
 Mostly clear, with a low around 78. West wind around 5 mph becoming calm in the evening.
Tuesday
 
 Sunny and hot, with a high near 111. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
 
 Mostly clear, with a low around 81. West wind around 5 mph becoming calm in the evening.
Wednesday
 
 Mostly sunny and hot, with a high near 111. Light and variable wind becoming west southwest 5 to 10 mph in the afternoon.
Wednesday Night
 
 Mostly clear, with a low around 82. West wind around 5 mph becoming calm in the evening.
Thursday
 
 Sunny and hot, with a high near 111. Light and variable wind becoming west southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
 
 Mostly clear, with a low around 82. West southwest wind 5 to 10 mph becoming light and variable after midnight.
Friday
 
 Sunny and hot, with a high near 111. Light and variable wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
 
 Mostly clear, with a low around 80. Breezy, with a west southwest wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 25 mph.
Saturday
 
 Sunny, with a high near 108. South southeast wind 5 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
 
 Mostly clear, with a low around 77. West southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 25 mph.
Sunday
 
 Sunny, with a high near 105. South southeast wind 5 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.

 

Forecast from NOAA-NWS for Fountain Hills AZ.