Why, AZ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Why, a community in Pima County, Arizona.
Overnight
52°F
Partly Cloudy
Partly cloudy, with a low around 52. East wind around 1 mph.
7-day forecast for Why
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Partly Cloudy | 1 mph E | 0% |
| Wednesday | 76°F | Sunny | 0 to 3 mph W | 0% |
| Wednesday Night | 52°F | Mostly Clear | 2 mph NNE | 0% |
| Thursday | 76°F | Mostly Sunny | 3 mph NE | 0% |
| Thursday Night | 54°F | Mostly Clear | 2 mph NNE | 0% |
| Friday | 77°F | Sunny | 1 to 5 mph NNE | 0% |
| Friday Night | 55°F | Mostly Clear | 3 mph NNE | 0% |
| Saturday | 78°F | Sunny | 3 to 8 mph NE | 7% |
| Saturday Night | 57°F | Mostly Clear | 3 to 8 mph NE | 7% |
| Sunday | 79°F | Sunny | 6 to 12 mph ENE | 1% |
| Sunday Night | 58°F | Partly Cloudy | 6 mph E | 1% |
| Monday | 78°F | Mostly Sunny | 1 to 6 mph E | 1% |
| Monday Night | 57°F | Partly Cloudy | 1 mph ENE | 2% |
| Tuesday | 78°F | Mostly Sunny | 2 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Why (32.259, -112.731). Updated through the day.
Growing snapshot for Why
Last spring frost
Jan 10
First fall frost
Dec 21
Growing season
347 days
Hardiness zone
9b
More local growing data for Why: nearby ZIP 85321 weather · frost dates · planting calendar · Arizona frost dates
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Climate data from the nearest NOAA station, Ajo, Az (16.1 mi from Why). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.