Santa Rosa, AZ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Santa Rosa, a community in Pima County, Arizona.
Today
103°F
Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 103. Heat index values as high as 105. Southwest wind 6 to 12 mph.
7-day forecast for Santa Rosa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 103°F | Sunny then Slight Chance Showers And Thunderstorms | 6 to 12 mph SW | 12% |
| Tonight | 80°F | Slight Chance Showers And Thunderstorms | 7 to 12 mph SW | 12% |
| Wednesday | 101°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 7 mph WSW | 26% |
| Wednesday Night | 79°F | Chance Showers And Thunderstorms then Mostly Cloudy | 6 mph SW | 26% |
| Thursday | 103°F | Slight Chance Showers And Thunderstorms | 2 to 6 mph WSW | 16% |
| Thursday Night | 80°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 6 mph WSW | 16% |
| Friday | 105°F | Chance Showers And Thunderstorms | 2 to 6 mph WNW | 25% |
| Friday Night | 80°F | Chance Showers And Thunderstorms then Partly Cloudy | 6 mph WSW | 25% |
| Saturday | 105°F | Chance Showers And Thunderstorms | 5 mph WNW | 29% |
| Saturday Night | 80°F | Chance Showers And Thunderstorms | 6 mph SW | 29% |
| Sunday | 102°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 41% |
| Sunday Night | 77°F | Chance Showers And Thunderstorms | 6 mph SSW | 41% |
| Monday | 99°F | Chance Showers And Thunderstorms | 6 mph SW | 35% |
| Monday Night | 76°F | Chance Showers And Thunderstorms | 7 mph SW | 35% |
Forecast source: National Weather Service (api.weather.gov) for Santa Rosa (32.332, -112.046). Updated through the day.
Growing snapshot for Santa Rosa
Last spring frost
Apr 26
First fall frost
Nov 4
Growing season
195 days
Hardiness zone
9a
More local growing data for Santa Rosa: nearby ZIP 85634 weather · frost dates · planting calendar · Arizona frost dates
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Climate data from the nearest NOAA station, Kitt Peak, Az (25.1 mi from Santa Rosa). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.