Pick the best weekend window to wash your car

No more washing only to see rain an hour later. Enter your city and get a clear recommendation for Saturday or Sunday.

Check your weekend

Quick picks

Ready when you are

Enter a city above to see the weekend forecast and the best wash window.

How this works in real life

🌤️

Clear Saturday, Rain Sunday

Saturday shows 10% rain chance, light wind, 78°F. Sunday jumps to 80% rain by noon. The planner picks Saturday morning. You wash, dry, and park in the garage before Sunday's storm.

💨

Low Rain but High Wind

Both days show under 20% rain, but Saturday has 22 mph gusts. Sunday drops to 8 mph. The planner picks Sunday. Wind blows dust onto wet paint, so calm days win.

🌧️

Rain Both Days

Saturday: 60% rain. Sunday: 45% rain. Neither is great. The planner still picks Sunday as the better option. Consider a waterless spray for touch-ups instead of a full wash.

Common mistakes

  • Ignoring wind. A dry but windy day drops dust and pollen on wet paint. Wait for calm air under 15 mph.
  • Washing in direct sun. Hot panels dry too fast and leave water spots. Pick morning or late afternoon.
  • Skipping the rinse after rain. If a surprise shower hits, rinse off acidic rain before it dries into spots.
  • Using a dirty mitt. Grit in the wash mitt scratches clear coat. Rinse it often or use a grit guard.

What to double-check

  • Forecast models change. Re-check Friday evening before committing.
  • Microclimates matter. Valley towns may get fog or rain that nearby cities miss.
  • Pollen counts spike on warm, dry, windy days. A wash right before a pollen burst wastes effort.
  • If you live near a highway or construction zone, dust can settle even without wind.

Questions people ask

What if both weekend days look bad?

The planner shows the lesser of two evils. If rain is likely both days, it picks the slot with the lowest chance. Consider a waterless spray for touch-ups instead.

Why does wind matter for a car wash?

Strong wind blows dust and pollen onto a wet car. Even without rain, a windy day can leave water spots and a film. The planner flags wind over 15 mph.

Can I share my result with a friend?

Yes. Click Copy Link to save a shareable URL with your city pre-filled. Paste it in a text or post it in a car-care group chat.

My city is not in the presets. What do I do?

Type any city name. The planner uses a built-in forecast model for demonstration. For real forecasts, check a weather service and use this planner to compare weekend slots.

How far in advance should I check?

Forecasts are most reliable 1-3 days out. Check Friday evening for the weekend. If Saturday morning looks different, re-run the planner.

Why this planner exists

Most people wash their car on a free weekend afternoon. Then it rains that night or dust blows in by morning. The effort feels wasted. This planner checks the forecast and points you to the window where your wash will last. It looks at rain chance, wind speed, and temperature. It gives you a clear answer: wash Saturday morning, wait until Sunday afternoon, or skip the weekend and use a waterless spray instead.

Built for car owners who hand-wash at home. No account needed. No ads tracking your location. Your last city saves in the browser so you can re-check each Friday with one click.

Last updated: January 2026 · Version 1.0