Fort Thomas, AZ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fort Thomas, a community in Graham County, Arizona.
Today
107°F
Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5pm. Sunny. High near 107, with temperatures falling to around 103 in the afternoon. Heat index values as high as 106. Northwest wind 7 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
7-day forecast for Fort Thomas
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 107°F | Sunny then Slight Chance Showers And Thunderstorms | 7 to 16 mph NW | 23% |
| Tonight | 78°F | Slight Chance Showers And Thunderstorms | 6 to 13 mph W | 23% |
| Wednesday | 105°F | Mostly Sunny then Chance Showers And Thunderstorms | 7 to 13 mph WNW | 35% |
| Wednesday Night | 76°F | Chance Showers And Thunderstorms then Mostly Cloudy | 3 to 12 mph NW | 35% |
| Thursday | 106°F | Slight Chance Showers And Thunderstorms | 3 to 10 mph NW | 20% |
| Thursday Night | 77°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 2 to 9 mph N | 20% |
| Friday | 106°F | Slight Chance Showers And Thunderstorms | 2 to 9 mph NW | 15% |
| Friday Night | 77°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 8 mph ENE | 15% |
| Saturday | 106°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 8 mph SSE | 15% |
| Saturday Night | 78°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 7 mph NNW | 15% |
| Sunday | 106°F | Slight Chance Showers And Thunderstorms | 2 to 10 mph WSW | 16% |
| Sunday Night | 76°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 9 mph NW | 16% |
| Monday | 103°F | Chance Showers And Thunderstorms | 5 to 15 mph WNW | 27% |
| Monday Night | 74°F | Chance Showers And Thunderstorms then Partly Cloudy | 6 to 14 mph NW | 27% |
Forecast source: National Weather Service (api.weather.gov) for Fort Thomas (33.030, -109.961). Updated through the day.
Growing snapshot for Fort Thomas
Last spring frost
Apr 1
First fall frost
Nov 6
Growing season
217 days
Hardiness zone
8b
More local growing data for Fort Thomas: nearby ZIP 85535 weather · frost dates · planting calendar · Arizona frost dates
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Climate data from the nearest NOAA station, Ft Thomas 2 Sw, Az (4.5 mi from Fort Thomas). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.