Poston, AZ Weather & Growing Conditions
Today
109°F
Sunny
Sunny, with a high near 109. Heat index values as high as 116. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 109°F | Sunny | 5 to 15 mph SSE | 1% |
| Tonight | 84°F | Mostly Clear | 5 to 15 mph SSE | 1% |
| Wednesday | 108°F | Sunny | 5 to 10 mph SSE | 0% |
| Wednesday Night | 84°F | Partly Cloudy | 5 to 15 mph S | 0% |
| Thursday | 109°F | Sunny | 5 to 10 mph S | 5% |
| Thursday Night | 85°F | Mostly Clear | 5 to 10 mph S | 5% |
| Friday | 111°F | Sunny | 5 to 10 mph S | 4% |
| Friday Night | 86°F | Mostly Clear | 10 mph S | 4% |
| Saturday | 111°F | Sunny | 5 to 10 mph S | 3% |
| Saturday Night | 86°F | Mostly Clear | 10 mph SSW | 1% |
| Sunday | 109°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph S | 15% |
| Sunday Night | 83°F | Slight Chance Showers And Thunderstorms | 5 to 15 mph S | 15% |
| Monday | 107°F | Mostly Sunny | 5 to 15 mph S | 9% |
| Monday Night | 82°F | Partly Cloudy | 5 to 15 mph S | 9% |
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 Aug 4, 2026.