Siloam Springs, AR Weather & Growing Conditions
Tonight
71°F
Mostly Clear
Mostly clear, with a low around 71. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 71°F | Mostly Clear | 5 mph S | 1% |
| Sunday | 96°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 16% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 51% |
| Monday | 85°F | Chance Showers And Thunderstorms | 0 to 10 mph NW | 51% |
| Monday Night | 61°F | Mostly Clear | 5 mph N | 13% |
| Tuesday | 82°F | Mostly Sunny | 5 to 10 mph N | 5% |
| Tuesday Night | 58°F | Mostly Clear | 5 to 10 mph NE | 3% |
| Wednesday | 83°F | Sunny | 5 mph NE | 1% |
| Wednesday Night | 58°F | Mostly Clear | 0 to 5 mph E | 1% |
| Thursday | 86°F | Mostly Sunny | 0 to 5 mph NE | 3% |
| Thursday Night | 62°F | Partly Cloudy | 0 to 5 mph E | 6% |
| Friday | 86°F | Slight Chance Rain Showers | 0 to 5 mph NE | 15% |
| Friday Night | 63°F | Mostly Cloudy | 0 to 5 mph NE | 13% |
| Saturday | 87°F | Partly Sunny | 0 to 5 mph E | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Siloam Springs, AR
Last spring frost
Apr 8
First fall frost
Oct 28
Growing season
203 days
Hardiness zone
7a
Explore more for Siloam Springs, AR: full frost dates · planting calendar · Arkansas frost dates
Climate data from the nearest NOAA station, Fayetteville Nw Ar Ap, Ar (11.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.