Summit, AZ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Summit, a community in Pima County, Arizona.
Overnight
76°F
Mostly Cloudy
Mostly cloudy. Low around 76, with temperatures rising to around 80 overnight. South southeast wind around 6 mph.
7-day forecast for Summit
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 76°F | Mostly Cloudy | 6 mph SSE | 3% |
| Tuesday | 103°F | Sunny then Chance Showers And Thunderstorms | 3 to 12 mph W | 37% |
| Tuesday Night | 77°F | Chance Showers And Thunderstorms | 3 to 12 mph S | 39% |
| Wednesday | 101°F | Sunny then Chance Showers And Thunderstorms | 3 to 9 mph WNW | 34% |
| Wednesday Night | 76°F | Chance Showers And Thunderstorms then Mostly Cloudy | 2 to 8 mph SW | 34% |
| Thursday | 103°F | Chance Showers And Thunderstorms | 2 to 10 mph WNW | 26% |
| Thursday Night | 77°F | Chance Showers And Thunderstorms | 3 to 9 mph SW | 26% |
| Friday | 104°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 7 mph WSW | 33% |
| Friday Night | 76°F | Chance Showers And Thunderstorms | 3 to 7 mph E | 33% |
| Saturday | 104°F | Chance Showers And Thunderstorms | 2 to 6 mph NE | 37% |
| Saturday Night | 76°F | Chance Showers And Thunderstorms then Partly Cloudy | 6 mph SW | 37% |
| Sunday | 102°F | Chance Showers And Thunderstorms | 2 to 8 mph W | 39% |
| Sunday Night | 74°F | Chance Showers And Thunderstorms | 3 to 8 mph SSW | 39% |
| Monday | 99°F | Chance Showers And Thunderstorms | 3 to 9 mph WSW | 51% |
Forecast source: National Weather Service (api.weather.gov) for Summit (32.062, -110.949). Updated through the day.
Growing snapshot for Summit
Last spring frost
Feb 5
First fall frost
Dec 9
Growing season
307 days
Hardiness zone
9a
More local growing data for Summit: nearby ZIP 85756 weather · frost dates · planting calendar · Arizona frost dates
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Climate data from the nearest NOAA station, Tucson Intl Ap, Az (5.1 mi from Summit). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.