Williamson, AZ Weather & Growing Conditions
Today
62°F
Sunny
Sunny. High near 62, with temperatures falling to around 58 in the afternoon. West wind 2 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 62°F | Sunny | 2 to 8 mph W | 0% |
| Tonight | 37°F | Clear | 7 mph NW | 0% |
| Thursday | 63°F | Mostly Sunny | 5 mph N | 0% |
| Thursday Night | 37°F | Mostly Cloudy | 2 to 6 mph W | 0% |
| Friday | 64°F | Sunny | 7 mph N | 0% |
| Friday Night | 39°F | Clear | 7 to 14 mph N | 0% |
| Saturday | 64°F | Sunny | 3 to 14 mph NE | 0% |
| Saturday Night | 39°F | Clear | 5 to 10 mph NE | 0% |
| Sunday | 66°F | Sunny | 0 to 9 mph NE | 0% |
| Sunday Night | 41°F | Mostly Clear | 0 to 6 mph NE | 0% |
| Monday | 66°F | Mostly Sunny | 0 to 5 mph NE | 1% |
| Monday Night | 42°F | Partly Cloudy | 0 to 3 mph N | 2% |
| Tuesday | 65°F | Mostly Sunny | 3 mph SE | 3% |
| Tuesday Night | 41°F | Partly Cloudy | 1 to 5 mph NW | 4% |
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 Nov 4, 2026.