Poston, AZ Weather & Growing Conditions
Tonight
69°F
Mostly Clear
Mostly clear. Low around 69, with temperatures rising to around 71 overnight. South southwest wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 69°F | Mostly Clear | 0 to 5 mph SSW | 0% |
| Saturday | 99°F | Sunny | 0 to 5 mph W | 0% |
| Saturday Night | 68°F | Mostly Clear | 0 mph | 0% |
| Sunday | 99°F | Mostly Sunny | 0 to 5 mph SE | 0% |
| Sunday Night | 74°F | Mostly Cloudy | 5 mph SSE | 0% |
| Monday | 98°F | Mostly Sunny | 5 to 15 mph SE | 1% |
| Monday Night | 70°F | Mostly Clear | 5 to 10 mph SSE | 2% |
| Tuesday | 98°F | Sunny | 5 mph ESE | 3% |
| Tuesday Night | 71°F | Mostly Clear | 0 to 5 mph ENE | 1% |
| Wednesday | 101°F | Sunny | 0 to 5 mph E | 2% |
| Wednesday Night | 75°F | Mostly Clear | 0 to 5 mph ESE | 5% |
| Thursday | 102°F | Mostly Sunny | 5 to 10 mph E | 11% |
| Thursday Night | 76°F | Partly Cloudy | 5 mph ESE | 11% |
| Friday | 101°F | Mostly Sunny | 5 to 10 mph ESE | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Poston, AZ
Last spring frost
Jan 12
First fall frost
Dec 19
Growing season
338 days
Hardiness zone
9a
Explore more for Poston, AZ: full frost dates · planting calendar · Arizona frost dates
Climate data from the nearest NOAA station, Parker, Az (14.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.