Williamson, AZ Weather & Growing Conditions
Today
96°F
Sunny
Sunny. High near 96, with temperatures falling to around 94 in the afternoon. Southwest wind 8 to 15 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 96°F | Sunny | 8 to 15 mph SW | 2% |
| Tonight | 67°F | Mostly Clear | 5 to 14 mph SW | 2% |
| Wednesday | 95°F | Slight Chance Showers And Thunderstorms | 3 to 13 mph SW | 14% |
| Wednesday Night | 67°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 2 to 13 mph SW | 11% |
| Thursday | 95°F | Chance Showers And Thunderstorms | 1 to 8 mph W | 42% |
| Thursday Night | 66°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 8 mph NW | 19% |
| Friday | 97°F | Slight Chance Showers And Thunderstorms | 2 to 8 mph W | 18% |
| Friday Night | 68°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 to 9 mph W | 15% |
| Saturday | 97°F | Slight Chance Showers And Thunderstorms | 2 to 9 mph W | 20% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 12 mph W | 20% |
| Sunday | 94°F | Chance Showers And Thunderstorms | 3 to 12 mph SW | 35% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 12 mph SW | 35% |
| Monday | 90°F | Chance Showers And Thunderstorms | 5 to 13 mph SW | 32% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 3 to 12 mph W | 32% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Williamson, AZ
Last spring frost
May 24
First fall frost
Oct 7
Growing season
135 days
Hardiness zone
7b
Explore more for Williamson, AZ: full frost dates · planting calendar · Arizona frost dates
Climate data from the nearest NOAA station, Walnut Creek, Az (11.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.