Fort Smith, AR Weather & Growing Conditions
Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 102. Southeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 5 mph SE | 0% |
| Tonight | 75°F | Mostly Clear | 5 to 10 mph E | 0% |
| Wednesday | 100°F | Sunny | 5 mph SE | 3% |
| Wednesday Night | 77°F | Partly Cloudy | 5 mph SE | 7% |
| Thursday | 100°F | Mostly Sunny | 0 to 5 mph S | 14% |
| Thursday Night | 77°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 30% |
| Friday | 96°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 34% |
| Friday Night | 76°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 10 mph SE | 34% |
| Saturday | 97°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 16% |
| Saturday Night | 76°F | Mostly Clear | 0 to 5 mph SE | 11% |
| Sunday | 97°F | Sunny | 0 to 10 mph S | 6% |
| Sunday Night | 78°F | Mostly Clear | 0 to 10 mph S | 6% |
| Monday | 98°F | Sunny | 0 to 10 mph S | 6% |
| Monday Night | 78°F | Mostly Clear | 0 to 10 mph S | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fort Smith, AR
Last spring frost
Mar 25
First fall frost
Nov 6
Growing season
224 days
Hardiness zone
8a
Explore more for Fort Smith, AR: full frost dates · planting calendar · Arkansas frost dates
Climate data from the nearest NOAA station, Ft Smith Rgnl Ap, Ar (3.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.