An Active Weather Pattern Ahead: Halloween Rain Chances & Potential Severe Storms Next Week

Key Highlights

Halloween (Saturday): Scattered showers and a few thunderstorms are possible. Trick-or-treating won't necessarily be a washout, but umbrellas may be needed.

Weekend Rainfall: Widespread totals around 0.25"–0.50" are possible, with isolated higher amounts approaching 1".

Monday–Tuesday: Another weather system could bring more widespread and potentially heavier rainfall.

Severe Weather Potential: Strong to severe thunderstorms are possible with the second system, but confidence in the timing, location, and overall threat remains low.

Drought Relief: Both systems could provide much-needed rainfall to Southwest Arkansas following an extended period of dry weather.

Halloween Forecast: Will Trick-or-Treating Be Wet?

Our first opportunity for rainfall arrives late Friday into Saturday as a disturbance moves across the region.

Scattered showers and a few thunderstorms are expected to develop across portions of Southwest Arkansas during the day Saturday, October 31.

For those planning to head out trick-or-treating Saturday evening, the forecast is not looking like a complete washout. However, some showers and thunderstorms could linger into the evening hours, so having an umbrella or rain jacket nearby would be a good idea.

Rainfall totals with this first system are currently expected to range from approximately 0.25" to 0.50", with some isolated locations potentially receiving higher amounts approaching 1".

There is still uncertainty regarding exactly where the heavier rainfall develops and how quickly the showers move out of the region.

The good news is that organized severe weather is not currently expected with this first round.

Temperatures will remain relatively mild for late October, although increasing cloud cover and rainfall could keep afternoon temperatures somewhat cooler. Humidity will also increase as moisture returns to the region.

Monday–Tuesday: Another System Brings Heavier Rainfall Potential

Following a brief break in the unsettled weather Sunday into early Monday, attention will quickly turn toward another potentially stronger weather system developing across the western United States.

A deep upper-level trough and associated low-pressure system are expected to move toward the Southern Plains early next week.

As this system approaches, increasing moisture and stronger atmospheric forcing could lead to another round of showers and thunderstorms across Southwest Arkansas.

Unlike the Halloween system, this second disturbance has the potential to produce more widespread and heavier rainfall.

This would be especially beneficial considering the ongoing drought conditions affecting much of our region.

However, there are still some important questions regarding the exact timing and track of this system. Some forecast models bring the system through more quickly, while others suggest it could move more slowly, potentially delaying the arrival of the heaviest rainfall.

For now, Monday and Tuesday are our primary days to monitor, although the timing could shift into the middle of next week.

Could We See Severe Weather Next Week?

One aspect of this second system that we will be watching closely is the potential for strong to severe thunderstorms.

Some of the latest forecast guidance suggests an environment that could support organized thunderstorms, with strong winds several thousand feet above the surface and sufficient wind shear.

However, one of the biggest questions remains whether we will have enough atmospheric instability, commonly referred to as storm fuel, to support severe thunderstorm development.

During the fall months, it is not uncommon for strong weather systems to move through the region with impressive wind fields but limited instability.

The timing of the system will also play a major role. A system arriving during the afternoon with sufficient moisture and instability could produce a different outcome than one arriving overnight or after earlier rainfall has stabilized the atmosphere.

At this time, severe weather is a possibility, not a certainty.

It is simply too early to determine the exact threats, locations, or severity of any potential thunderstorms.

We want to emphasize that this is not a reason to panic. Instead, consider this an early heads-up to keep the forecast on your radar as we continue monitoring the latest data.

Much-Needed Rainfall for Southwest Arkansas

Perhaps the most encouraging aspect of the upcoming pattern is the opportunity for beneficial rainfall.

Southwest Arkansas has experienced an extended period of unusually dry conditions, allowing drought conditions to worsen across the region.

While the first system around Halloween may produce generally light to moderate rainfall, the second system early next week could provide a better opportunity for more substantial totals.

It remains too early to provide reliable rainfall amounts for the second system, especially with the ongoing uncertainty in its timing and track.

However, the overall pattern appears increasingly favorable for a wetter stretch of weather than we have experienced in recent weeks.

Although one or two rainfall events will not necessarily eliminate our drought conditions, meaningful rainfall would certainly be a welcome development.

Looking Ahead: What Happens After These Systems?

Once the stronger system and associated cold front eventually move through the region, temperatures should begin returning closer to seasonal averages by the middle or latter part of next week.

Until then, temperatures will generally remain near to above normal for late October and early November.

The exact timing of the cooler air will depend on how quickly the second weather system progresses eastward.

Final Thoughts

After what has seemed like an endless stretch of dry weather, we finally have some encouraging signs of a more active weather pattern developing across Southwest Arkansas.

Our first opportunity for rainfall arrives around Halloween, with scattered showers potentially affecting trick-or-treating plans Saturday evening.

A second, potentially stronger system will follow early next week, bringing opportunities for heavier rainfall and possibly strong to severe thunderstorms.

Our biggest forecast questions moving forward are:

How widespread will rainfall be during Halloween?

How much beneficial rainfall could the second system produce?

Will sufficient atmospheric instability develop to support severe thunderstorms?

How will the timing and track of the second system change over the coming days?

We will continue analyzing the latest forecast guidance and provide updates as confidence increases.

For now, enjoy the remainder of the workweek, keep an umbrella handy for Halloween, and stay weather-aware as we head into next week!

Southwest Arkansas Weather | Noah McGalliard