Fountain Hills, AZ Weather & Growing Conditions
This Afternoon
99°F
Sunny
Sunny, with a high near 99. South southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 99°F | Sunny | 5 mph SSW | 0% |
| Tonight | 75°F | Mostly Clear | 5 mph NW | 0% |
| Saturday | 100°F | Sunny | 0 to 5 mph SSW | 0% |
| Saturday Night | 73°F | Mostly Clear | 0 to 5 mph NNW | 0% |
| Sunday | 99°F | Sunny | 5 mph SSE | 0% |
| Sunday Night | 77°F | Partly Cloudy | 0 to 5 mph ENE | 0% |
| Monday | 98°F | Mostly Sunny | 5 mph SE | 1% |
| Monday Night | 76°F | Mostly Clear | 0 to 5 mph NE | 12% |
| Tuesday | 98°F | Sunny | 0 to 5 mph SE | 12% |
| Tuesday Night | 77°F | Mostly Clear | 5 to 10 mph E | 9% |
| Wednesday | 100°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph E | 15% |
| Wednesday Night | 78°F | Slight Chance Showers And Thunderstorms | 5 to 15 mph ENE | 16% |
| Thursday | 98°F | Slight Chance Showers And Thunderstorms | 5 to 15 mph E | 23% |
| Thursday Night | 78°F | Chance Showers And Thunderstorms | 5 to 15 mph E | 28% |
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 Sep 19, 2026.