Sun Valley, AZ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sun Valley, a community in Navajo County, Arizona.
Overnight
68°F
Mostly Clear
Mostly clear. Low around 68, with temperatures rising to around 70 overnight. Southwest wind around 6 mph.
7-day forecast for Sun Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 68°F | Mostly Clear | 6 mph SW | 0% |
| Tuesday | 99°F | Sunny | 6 to 12 mph W | 7% |
| Tuesday Night | 68°F | Mostly Clear | 6 to 14 mph SW | 7% |
| Wednesday | 98°F | Sunny | 5 to 13 mph W | 2% |
| Wednesday Night | 67°F | Partly Cloudy | 5 to 16 mph SW | 1% |
| Thursday | 98°F | Sunny then Slight Chance Showers And Thunderstorms | 3 to 8 mph W | 10% |
| Thursday Night | 66°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 16 mph SW | 10% |
| Friday | 98°F | Sunny | 5 mph W | 4% |
| Friday Night | 67°F | Mostly Clear | 8 to 16 mph S | 4% |
| Saturday | 98°F | Sunny | 3 to 8 mph SW | 4% |
| Saturday Night | 68°F | Partly Cloudy | 6 to 18 mph S | 4% |
| Sunday | 97°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 22% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 6 to 16 mph SW | 22% |
| Monday | 95°F | Chance Showers And Thunderstorms | 6 to 16 mph W | 35% |
Forecast source: National Weather Service (api.weather.gov) for Sun Valley (34.983, -110.032). Updated through the day.
Growing snapshot for Sun Valley
Last spring frost
Apr 22
First fall frost
Oct 24
Growing season
184 days
Hardiness zone
7a
More local growing data for Sun Valley: nearby ZIP 86029 weather · frost dates · planting calendar · Arizona frost dates
Nearby towns & communities
Canyon Day
Carrizo
Chilchinbito
Cibecue
Clay Springs
Dilkon
East Fork
First Mesa
Fort Apache
Hard Rock
Heber-Overgaard
Holbrook
Hondah
Hotevilla-Bacavi
Indian Wells
Jeddito
Joseph City
Kayenta
Keams Canyon
Kykotsmovi Village
Lake of the Woods
Linden
North Fork
Pinedale
Pinetop Country Club
Pinetop-Lakeside
Pinon
Seba Dalkai
Second Mesa
Seven Mile
Climate data from the nearest NOAA station, Holbrook, Az (9 mi from Sun Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.