National Weather Service Forecast for: Siloam Springs AR
Issued by: National Weather Service Tulsa, OK
Updated: 1:31 pm CDT May 4, 2026
 
This
Afternoon
This Afternoon: Sunny, with a high near 78. South wind around 20 mph, with gusts as high as 30 mph.
Sunny

 Tonight

Tonight: Showers and thunderstorms likely, mainly between 1am and 4am. Mostly cloudy, with a low around 61. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
T-storms
Likely
 Tuesday

Tuesday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73. Southeast wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Chance
T-storms

 Tuesday
Night
Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. North wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Chance
T-storms then
Chance
Showers
 Wednesday

Wednesday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 61. Northeast wind around 10 mph, with gusts as high as 20 mph.
Slight Chance
Showers

 Wednesday
Night
Wednesday Night: Mostly cloudy, with a low around 42. North wind 5 to 10 mph.
Mostly Cloudy

 Thursday

Thursday: Sunny, with a high near 66. North wind around 5 mph.
Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 46. West wind around 5 mph becoming south after midnight.
Mostly Clear

 Friday

Friday: Sunny, with a high near 76. South wind 5 to 10 mph, with gusts as high as 20 mph.
Sunny
Hi 78 °F Lo 61 °F Hi 73 °F Lo 48 °F Hi 61 °F Lo 42 °F Hi 66 °F Lo 46 °F Hi 76 °F

Hazardous Weather Outlook
 

This Afternoon
 
 Sunny, with a high near 78. South wind around 20 mph, with gusts as high as 30 mph.
Tonight
 
 Showers and thunderstorms likely, mainly between 1am and 4am. Mostly cloudy, with a low around 61. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
 
 A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73. Southeast wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. North wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Wednesday
 
 A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 61. Northeast wind around 10 mph, with gusts as high as 20 mph.
Wednesday Night
 
 Mostly cloudy, with a low around 42. North wind 5 to 10 mph.
Thursday
 
 Sunny, with a high near 66. North wind around 5 mph.
Thursday Night
 
 Mostly clear, with a low around 46. West wind around 5 mph becoming south after midnight.
Friday
 
 Sunny, with a high near 76. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
 
 Mostly clear, with a low around 54. South wind 5 to 10 mph.
Saturday
 
 Sunny, with a high near 80. South wind around 5 mph.
Saturday Night
 
 A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 59. South wind around 5 mph.
Sunday
 
 A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 77. South wind 5 to 10 mph, with gusts as high as 20 mph.

 

Forecast from NOAA-NWS for Siloam Springs AR.