Casa Grande, AZ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Casa Grande, a city in Pinal County, Arizona.
Overnight
72°F
Mostly Clear
Mostly clear, with a low around 72. South southeast wind 0 to 5 mph.
7-day forecast for Casa Grande
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 72°F | Mostly Clear | 0 to 5 mph SSE | 0% |
| Saturday | 99°F | Sunny | 0 to 5 mph SSW | 0% |
| Saturday Night | 72°F | Mostly Clear | 0 to 5 mph WSW | 0% |
| Sunday | 99°F | Sunny | 5 mph SSE | 0% |
| Sunday Night | 74°F | Partly Cloudy | 5 mph SSE | 1% |
| Monday | 99°F | Mostly Sunny | 5 mph S | 0% |
| Monday Night | 74°F | Mostly Clear | 0 to 5 mph SSW | 6% |
| Tuesday | 99°F | Sunny | 5 mph SE | 4% |
| Tuesday Night | 75°F | Mostly Clear | 0 to 5 mph ENE | 4% |
| Wednesday | 99°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph E | 11% |
| Wednesday Night | 77°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 10 mph ENE | 14% |
| Thursday | 97°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph E | 21% |
| Thursday Night | 76°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph ENE | 21% |
| Friday | 98°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph ENE | 17% |
Forecast source: National Weather Service (api.weather.gov) for Casa Grande (32.907, -111.763). Updated through the day.
Growing snapshot for Casa Grande
Last spring frost
Feb 5
First fall frost
Dec 6
Growing season
305 days
Hardiness zone
9a
More local growing data for Casa Grande: nearby ZIP 85122 weather · frost dates · planting calendar · Arizona frost dates
Nearby towns & communities
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Queen Creek
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San Tan Valley
Climate data from the nearest NOAA station, Casa Grande, Az (2.8 mi from Casa Grande). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.