Siloam Springs, Arkansas 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Siloam Springs AR
National Weather Service Forecast for:
Siloam Springs AR
Issued by: National Weather Service Tulsa, OK |
Updated: 1:50 am CDT Jul 13, 2025 |
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Overnight
 Chance T-storms
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Sunday
 Showers Likely
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Sunday Night
 Showers Likely then Mostly Cloudy
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Monday
 Chance T-storms
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Monday Night
 Partly Cloudy then Slight Chance T-storms
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Tuesday
 Chance T-storms
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Tuesday Night
 Partly Cloudy then Slight Chance T-storms
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Wednesday
 Chance T-storms
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Wednesday Night
 Chance T-storms
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Lo 69 °F |
Hi 81 °F |
Lo 68 °F |
Hi 84 °F |
Lo 68 °F |
Hi 87 °F |
Lo 71 °F |
Hi 89 °F |
Lo 71 °F |
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Hazardous Weather Outlook
Flood Watch
Overnight
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A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. South wind around 5 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
Sunday
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Showers likely and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms between 10am and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 81. Southwest wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
Sunday Night
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Showers likely and possibly a thunderstorm before 7pm, then a slight chance of showers and thunderstorms between 7pm and 10pm. Mostly cloudy, with a low around 68. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Monday
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A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon. |
Monday Night
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A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. South wind around 5 mph becoming calm. |
Tuesday
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A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 87. South wind 5 to 10 mph. |
Tuesday Night
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A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. South wind around 5 mph. |
Wednesday
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A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 89. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. |
Wednesday Night
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A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71. South wind around 5 mph. |
Thursday
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A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Southwest wind 5 to 10 mph. |
Thursday Night
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A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. Southwest wind around 5 mph becoming east in the evening. |
Friday
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A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. Southeast wind around 5 mph becoming southwest in the afternoon. |
Friday Night
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Mostly clear, with a low around 70. South wind around 5 mph becoming calm. |
Saturday
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A 20 percent chance of showers and thunderstorms. Sunny, with a high near 91. Southwest wind around 5 mph. |
Forecast from NOAA-NWS
for Siloam Springs AR.
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Weather Forecast Discussion
403
FXUS64 KTSA 130511
AFDTSA
Area Forecast Discussion
National Weather Service Tulsa OK
1211 AM CDT Sun Jul 13 2025
...New SHORT TERM, LONG TERM, AVIATION...
.KEY MESSAGES...
Issued at 1207 AM CDT Sun Jul 13 2025
- Scattered to numerous showers and thunderstorms will continue today
and likely lasting into Monday, with potential for locally
heavy rainfall. A Flood Watch remains in effect until 7 PM this
evening for all of the NWS Tulsa forecast area.
- Rain/storm chances become more diurnally driven by Tuesday,
with the best coverage shifting to the northeast of the area.
- A weak front approaching the area from the north will continue
to bring chances for storms Wednesday and Thursday.
- Storm chances drop off by the end of the week as ridging tries
to build in aloft.
&&
.SHORT TERM...
(Today)
Issued at 1207 AM CDT Sun Jul 13 2025
Mid-level trough/MCV currently over the southern KS will shift over
northeast OK by mid-late morning. At the surface, a weak frontal
boundary should remain stationary across east-central OK and
southeast KS through the daytime. Consensus in global and hi-res
model data suggest showers and thunderstorms will increase in
coverage on the southern and eastern periphery of the MCV, across
southeast OK and northwest AR, a few hours after midnight and
through the morning hours. Locally heavy rainfall/flooding remains
the primary threat, though there may be enough instability for
marginally severe downbursts with more organized activity. Despite a
somewhat worked-over atmosphere after convection in the morning,
another round of diurnally-driven showers and thunderstorms seems
probable sometime mid-late afternoon as some destabilization occurs.
Daytime heating, lingering MCV, and leftover outflow boundaries
should cause scattered to numerous showers and storms, with hi-res
models focusing convection mostly across southeast OK and western
AR. This is also where the highest PWATs (2+ inches) will be located
by the afternoon. Rainfall amounts will vary (maybe greatly) from
location to location, but in general, additional rainfall amounts 2+
inches will be possible today. A plethora of cloud cover and
rainfall will keep temperatures unseasonably cool for mid-July.
Afternoon highs will generally reach the low-mid 80s.
&&
.LONG TERM...
(Tonight through Saturday)
Issued at 1207 AM CDT Sun Jul 13 2025
The mid-level trough axis and associated vorticity lobe will park
itself and become nearly stationary over the forecast area tonight
and through much of the day on Monday, maybe even beyond Monday.
Latest 00z run of the HRRR suggests a decrease in precipitation
after sunset this evening and into the overnight hours. Maintained a
chance of showers and storms given the juicy environment and trough
over the area. Otherwise, tonight should be mostly dry with
overnight lows dropping into the upper 60s to lower 70s.
Isolated to scattered diurnally-driven convection looks probable
again Monday and through at least Wednesday as the upper-level
trough finally begins to lift northeast out of the area thereafter.
A weak cold front will try and approach the forecast area sometime
Wednesday or Thursday, but likely will not be strong enough to push
through. Long-range models hint at showers and storms may accompany
the frontal boundary as it approaches, and may push into northeast
OK and northwest AR Wednesday night into Thursday. Beyond Thursday,
models and ensembles indicate mid/upper-level ridging finally
beginning to build in over the southern CONUS by late in the week
and into next weekend. With that said, temperatures will trend
warmer and precipitation will trend drier each day through the long-
term period.
&&
.AVIATION...
(06Z TAFS)
Issued at 1207 AM CDT Sun Jul 13 2025
Scattered showers and isolated thunderstorms will continue through
the night, though coverage will generally wind down somewhat the
next few hours. Ceilings will come down to 700-2000 ft for all
areas tonight with some slight visibility reductions, especially
in heavier showers. Storm activity will ramp back up near daybreak
and into the afternoon for KMLC up through northwest Arkansas.
Storms will produce heavy rainfall and frequent lightning.
Ceilings will gradually lift during the day, breaking up by the
evening. Wind will generally be light and variable through the
period.
&&
.PRELIMINARY POINT TEMPS/POPS...
TUL 84 70 88 73 / 50 10 20 10
FSM 86 73 88 72 / 80 20 50 20
MLC 85 70 87 72 / 70 30 40 20
BVO 84 67 89 68 / 40 10 20 10
FYV 83 68 86 68 / 70 20 40 20
BYV 83 68 86 68 / 70 20 40 10
MKO 83 70 85 71 / 60 20 40 20
MIO 83 69 87 69 / 70 10 20 20
F10 83 69 86 70 / 50 20 30 20
HHW 84 70 87 71 / 70 40 40 10
&&
.TSA WATCHES/WARNINGS/ADVISORIES...
OK...Flood Watch through this evening for OKZ049-053>076.
AR...Flood Watch through this evening for ARZ001-002-010-011-019-020-
029.
&&
$$
SHORT TERM...67
LONG TERM....67
AVIATION...06
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