By Ken McClary
Timing your pressure wash right can make a real difference - in how clean your property gets, how long it stays clean, and even how much the job costs. Living in Northwest Arkansas, we have a pretty specific climate that affects when outdoor cleaning makes the most sense. I've been washing homes across Rogers, Bentonville, Springdale, and Fayetteville for years, and here's what I've learned about the best time to schedule a wash.
Spring: The Best Time to Wash (March - May)
Spring is hands down the most popular time for pressure washing in NWA, and for good reason. Winter leaves behind a layer of grime - dirt, dead organic matter, and moisture staining that's been sitting on your surfaces for months. Spring cleaning isn't just for the inside of your house.
Here's what makes spring ideal:
- Post-winter cleanup: All the grime from the cold months gets removed before it has a chance to set in deeper during the summer heat.
- Moderate temperatures: Cleaning solutions work best when it's between 50 and 85 degrees. Spring in NWA typically gives us that sweet spot.
- Ahead of outdoor season: Your deck, patio, and driveway are ready for cookouts, gatherings, and all that outdoor living we do in the summer.
- Pre-algae timing: Getting surfaces clean before the humidity of June and July means algae has a harder time getting a foothold.
One thing to keep in mind about spring in NWA: pollen. We get hit hard by tree pollen from late March through mid-April. If you're washing your house, I usually suggest waiting until mid to late April so that the heaviest pollen dump is behind us. Otherwise, your freshly washed siding could be yellow-green again within a week.
For driveways and concrete, pollen isn't as much of a concern - rain washes most of it off hard surfaces. So concrete work can start as early as March when temperatures are consistently above 45 degrees.
Summer: It Works, But Plan Ahead (June - August)
Summer is perfectly fine for pressure washing, and I stay busy all through June, July, and August. That said, there are a few things to keep in mind about our NWA summers:
- Heat and humidity: July and August regularly hit the 90s with high humidity. Cleaning solutions can dry too quickly on hot surfaces, which reduces their effectiveness. I work early mornings during the hottest months to avoid this.
- Afternoon storms: NWA is known for afternoon thunderstorms in the summer. I keep an eye on the forecast, but sometimes a job gets interrupted. Scheduling flexibility helps.
- Algae is at its peak: The warmth and moisture make summer the prime growing season for algae and mildew. If you didn't get a spring wash, summer is when you'll really notice the green taking over.
- Busy season: A lot of people wait until they see the problem, which means summer is my busiest time. Booking a week or two out is common from June through August.
If you need a summer wash, don't hesitate - just know that mornings are better than afternoons, and booking early gives you more scheduling options.
Fall: The Smart Second Choice (September - November)
Fall is an underrated time for pressure washing, and honestly, it might be the best-kept secret in the business. Here's why I recommend it:
- Post-summer cleanup: After months of humidity, your house has likely picked up new algae and mildew growth. A fall wash resets everything.
- Holiday prep: Thanksgiving and Christmas mean visitors. A clean exterior makes a great impression when family and friends are pulling into your driveway.
- Winter protection: Removing organic growth before winter prevents it from staying wet against your surfaces during the cold months, which can lead to staining and even damage to wood and paint.
- Perfect weather: September and October in NWA are gorgeous - mild temperatures, lower humidity, and less rain than spring. Cleaning solutions perform well and surfaces dry properly.
I'd aim to get fall washing done by mid-November at the latest. Once we start getting into late November and December, temperatures can drop below the threshold where cleaning is effective and safe for the equipment.
Winter: Best to Wait (December - February)
I don't recommend pressure washing in the winter here in Northwest Arkansas, and here's why:
- Freezing risk: Water on surfaces can freeze, creating dangerous ice. It's also hard on equipment - water in lines and pumps can freeze and cause damage.
- Cleaning solutions don't work well in the cold: Most cleaning products need temperatures above 40-45 degrees to be effective. Below that, they just don't break down algae and grime the way they should.
- Surfaces don't dry: Cold, damp conditions mean water sits on surfaces longer, which can lead to ice formation or moisture issues, especially on wood decks and fences.
- Short days: Less daylight means less time to work and less sun to help surfaces dry after the job.
That said, if we get one of those mild January or February stretches - and we do sometimes get a week of 55-60 degree weather - I can work with that for smaller jobs like a driveway or front walkway. But for a full house wash, it's better to wait for spring.
NWA Weather Patterns to Know
After years of working outside in this area, here are the local weather patterns I factor into scheduling:
- Pollen season (mid-March to mid-April): Heavy tree pollen makes house washing less effective unless you time it right. Driveways and patios are fine during this period.
- Severe storm season (April - June): We get our share of strong storms. I always check the forecast and will reschedule if needed rather than risk it.
- Humidity peak (July - August): This is when algae grows fastest. If your house looks green, this is probably why.
- Fall dry spell (September - October): Usually the driest stretch of the year. Perfect working conditions and surfaces stay clean longer afterward.
- Ice and frost (December - February): Unpredictable freezes make winter washing unreliable.
My Recommendation
If you're going to wash your house once a year, aim for late April to early May. You'll be past the worst of pollen season, ahead of the summer algae bloom, and your home will look great heading into the months when you're using your outdoor spaces the most.
If you want to go above and beyond, a spring wash plus a fall touch-up in October is the gold standard. That schedule keeps your home looking clean year-round and prevents any buildup from getting out of hand.
For driveways and concrete, spring is still the best starting point, but these surfaces are more flexible on timing. Anytime from March through November works well.
I serve homeowners all across NWA. If you're thinking about scheduling, check out my house washing, driveway cleaning, or roof cleaning pages. I work in Rogers, Bentonville, Fayetteville, Springdale, and all surrounding areas.
Request a free quote and let's get your property on the schedule.
- Ken McClary, Wash NWA
(479) 426-7006
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