Southwest Arkansas Weather Forecast Discussion June 23, 2026
An active weather pattern will continue across Arkansas through Friday as multiple disturbances move through a northwest flow pattern aloft. Several rounds of showers and thunderstorms are expected between Tuesday night and early Friday, bringing the potential for heavy rainfall, damaging wind gusts, and frequent lightning. The greatest forecast challenge over the next 48 hours will be determining exactly where thunderstorm complexes develop and track. Small changes in the position of these disturbances can significantly impact which communities receive the heaviest rain and strongest storms. By the weekend, rain chances will diminish as high pressure begins building into the region. This will lead to a return of hotter temperatures and increasing heat concerns by early next week.
Tuesday Night Through Wednesday
A stationary front remains positioned across portions of Southwest Arkansas early Tuesday, helping to focus scattered showers and thunderstorms across the region. Additional development is expected later today and tonight as disturbances move southeast out of Kansas and Oklahoma.
Forecast confidence remains lower than normal due to the classic "northwest flow" setup. These patterns are notorious for producing overnight thunderstorm complexes that can be difficult to forecast more than a few hours in advance.
Current indications suggest at least one or two clusters of storms will move through Arkansas between late Tuesday and Wednesday.
Potential impacts include:
Damaging wind gusts of 50 to 60 mph Torrential rainfall Frequent cloud-to-ground lightning Localized flash flooding
At this time, the highest storm chances appear to favor western and northern Arkansas initially, but confidence in exact placement remains limited.
Residents are encouraged to avoid focusing on any single forecast model solution, as significant adjustments are likely once storms begin developing across Oklahoma and Kansas later today.
Thursday Into Friday
Additional rounds of showers and thunderstorms remain possible Thursday as another disturbance moves through the northwest flow pattern.
While scattered storms may occur statewide, forecast guidance currently suggests the greatest rain chances may gradually shift toward northern Arkansas by late Thursday and Friday.
Areas that receive multiple rounds of storms through the week could experience locally heavy rainfall totals and isolated flash flooding concerns.
Temperatures during this period will remain below normal for late June due to extensive cloud cover and rainfall.
Weekend Outlook
Weather conditions are expected to improve considerably by the weekend.
Upper-level ridging will begin building eastward across the southern United States, resulting in:
Decreasing rain chances More sunshine Increasing temperatures Higher humidity levels
Most locations should experience a largely dry weekend with only isolated storm chances.
Looking Ahead: Heat Returns
The biggest weather story may become the heat by late weekend and early next week.
As upper-level high pressure strengthens across the eastern United States, temperatures are forecast to climb back into the middle 90s across much of Arkansas. Combined with increasing humidity and saturated soils from recent rainfall, heat index values could exceed 105 degrees in some locations.
Overnight temperatures may remain unusually warm, with some areas struggling to fall below 80 degrees through early next week.
If current trends continue, heat advisories may become necessary by Sunday, Monday, and beyond.
Southwest Arkansas Weather Bottom Line Multiple rounds of showers and thunderstorms are expected through Friday. The exact timing and placement of the heaviest rain remains uncertain. Some storms could produce damaging wind gusts, heavy rainfall, and dangerous lightning. Flash flooding may develop in areas that receive repeated rounds of storms. Rain chances gradually decrease this weekend. Hot and humid conditions return by Sunday and continue into next week, with heat index values potentially exceeding 105°.
