National Weather Service Forecast for: Sierra Vista AZ
Issued by: National Weather Service Tucson, AZ
Updated: 11:32 pm MST Jun 21, 2026
 
Overnight

Overnight: Clear, with a low around 69. Light south southwest wind.
Clear

 Monday

Monday: Sunny, with a high near 100. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Sunny

 Monday
Night
Monday Night: Mostly clear, with a low around 73. West wind 5 to 13 mph.
Mostly Clear

 Tuesday

Tuesday: Sunny, with a high near 101. Calm wind becoming north around 5 mph in the afternoon.
Sunny

 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 75. West wind 6 to 15 mph, with gusts as high as 25 mph.
Mostly Clear

 Wednesday

Wednesday: Sunny, with a high near 100.
Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 75.
Mostly Clear

 Thursday

Thursday: A 20 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 99.
Slight Chance
T-storms
 Thursday
Night
Thursday Night: A 10 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 73.
Slight Chance
T-storms then
Partly Cloudy
Lo 69 °F Hi 100 °F Lo 73 °F Hi 101 °F Lo 75 °F Hi 100 °F Lo 75 °F Hi 99 °F Lo 73 °F

Extreme Heat Watch
 

Overnight
 
 Clear, with a low around 69. Light south southwest wind.
Monday
 
 Sunny, with a high near 100. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Monday Night
 
 Mostly clear, with a low around 73. West wind 5 to 13 mph.
Tuesday
 
 Sunny, with a high near 101. Calm wind becoming north around 5 mph in the afternoon.
Tuesday Night
 
 Mostly clear, with a low around 75. West wind 6 to 15 mph, with gusts as high as 25 mph.
Wednesday
 
 Sunny, with a high near 100.
Wednesday Night
 
 Mostly clear, with a low around 75.
Thursday
 
 A 20 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 99.
Thursday Night
 
 A 10 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 73.
Friday
 
 A 20 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 97.
Friday Night
 
 A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 72.
Saturday
 
 Sunny, with a high near 95.
Saturday Night
 
 Mostly clear, with a low around 70.
Sunday
 
 Sunny, with a high near 94.

 

Forecast from NOAA-NWS for Sierra Vista AZ.