Fountain Hills, AZ Weather & Growing Conditions
Today
108°F
Sunny
Sunny. High near 108, with temperatures falling to around 106 in the afternoon. West wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 108°F | Sunny | 5 to 10 mph W | 2% |
| Tonight | 85°F | Mostly Clear then Patchy Blowing Dust | 0 to 20 mph WSW | 4% |
| Wednesday | 106°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph WNW | 11% |
| Wednesday Night | 83°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph NNW | 11% |
| Thursday | 108°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph WNW | 12% |
| Thursday Night | 83°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph N | 12% |
| Friday | 109°F | Sunny | 0 to 5 mph N | 7% |
| Friday Night | 84°F | Partly Cloudy | 0 to 5 mph NW | 7% |
| Saturday | 109°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 15% |
| Saturday Night | 84°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph E | 15% |
| Sunday | 107°F | Chance Showers And Thunderstorms | 0 to 5 mph WSW | 29% |
| Sunday Night | 81°F | Chance Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph NNE | 29% |
| Monday | 103°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 38% |
| Monday Night | 79°F | Chance Showers And Thunderstorms | 0 to 5 mph NNW | 38% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fountain Hills, AZ
Last spring frost
Jan 6
First fall frost
Dec 28
Growing season
356 days
Hardiness zone
9b
Explore more for Fountain Hills, AZ: full frost dates · planting calendar · Arizona frost dates
Climate data from the nearest NOAA station, Fountain Hills, Az (1.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.