Poston, AZ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Poston, a community in La Paz County, Arizona.
Overnight
83°F
Mostly Clear
Mostly clear. Low around 83, with temperatures rising to around 86 overnight. Southeast wind around 5 mph, with gusts as high as 20 mph.
7-day forecast for Poston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 83°F | Mostly Clear | 5 mph SE | 0% |
| Tuesday | 109°F | Sunny | 5 to 15 mph S | 1% |
| Tuesday Night | 83°F | Mostly Clear | 5 to 15 mph SSE | 1% |
| Wednesday | 108°F | Sunny | 5 to 10 mph SSE | 0% |
| Wednesday Night | 83°F | Partly Cloudy | 5 to 10 mph S | 0% |
| Thursday | 109°F | Sunny | 5 to 10 mph S | 5% |
| Thursday Night | 84°F | Mostly Clear | 5 to 10 mph S | 5% |
| Friday | 111°F | Sunny | 5 to 10 mph S | 3% |
| Friday Night | 86°F | Mostly Clear | 10 mph S | 3% |
| Saturday | 112°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 | 82°F | Slight Chance Showers And Thunderstorms | 5 to 15 mph S | 15% |
| Monday | 107°F | Mostly Sunny | 5 to 15 mph S | 9% |
Forecast source: National Weather Service (api.weather.gov) for Poston (33.992, -114.404). Updated through the day.
Growing snapshot for Poston
Last spring frost
Jan 12
First fall frost
Dec 19
Growing season
338 days
Hardiness zone
9a
More local growing data for Poston: nearby ZIP 85371 weather · frost dates · planting calendar · Arizona frost dates
Nearby towns & communities
Alamo Lake
Bouse
Brenda
Cibola
Ehrenberg
La Paz Valley
Parker
Quartzsite
Salome
Utting
Vicksburg
Wenden
Climate data from the nearest NOAA station, Parker, Az (14.1 mi from Poston). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.