Fountain Hills, AZ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fountain Hills, a town in Maricopa County, Arizona.
Overnight
84°F
Mostly Clear
Mostly clear. Low around 84, with temperatures rising to around 87 overnight. North wind around 5 mph.
7-day forecast for Fountain Hills
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 84°F | Mostly Clear | 5 mph N | 1% |
| Tuesday | 108°F | Sunny | 5 to 10 mph WNW | 2% |
| Tuesday Night | 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% |
Forecast source: National Weather Service (api.weather.gov) for Fountain Hills (33.608, -111.738). Updated through the day.
Growing snapshot for Fountain Hills
Last spring frost
Jan 6
First fall frost
Dec 28
Growing season
356 days
Hardiness zone
9b
More local growing data for Fountain Hills: nearby ZIP 85268 weather · frost dates · planting calendar · Arizona frost dates
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Climate data from the nearest NOAA station, Fountain Hills, Az (1.4 mi from Fountain Hills). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.