Fort Smith, AR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fort Smith, a city in Sebastian County, Arkansas.
Overnight
72°F
Mostly Clear
Mostly clear, with a low around 72. East wind around 5 mph.
7-day forecast for Fort Smith
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 72°F | Mostly Clear | 5 mph E | 0% |
| Tuesday | 99°F | Sunny | 5 mph SE | 0% |
| Tuesday Night | 74°F | Mostly Clear | 5 mph E | 0% |
| Wednesday | 100°F | Sunny | 5 mph SE | 3% |
| Wednesday Night | 76°F | Partly Cloudy | 0 to 5 mph SE | 7% |
| Thursday | 100°F | Mostly Sunny | 0 to 5 mph S | 13% |
| Thursday Night | 76°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 30% |
| Friday | 95°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 35% |
| Friday Night | 76°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 35% |
| Saturday | 96°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 17% |
| Saturday Night | 76°F | Mostly Clear | 0 to 5 mph SE | 11% |
| Sunday | 97°F | Sunny | 0 to 5 mph S | 6% |
| Sunday Night | 77°F | Mostly Clear | 0 to 5 mph SE | 6% |
| Monday | 97°F | Sunny | 0 to 10 mph S | 7% |
Forecast source: National Weather Service (api.weather.gov) for Fort Smith (35.349, -94.371). Updated through the day.
Growing snapshot for Fort Smith
Last spring frost
Mar 25
First fall frost
Nov 6
Growing season
224 days
Hardiness zone
8a
More local growing data for Fort Smith: nearby ZIP 72903 weather · frost dates · planting calendar · Arkansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ft Smith Rgnl Ap, Ar (1.5 mi from Fort Smith). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.