Driveway Sealing Weather in Beaverton, OR: 10-Day Windows & Best Months

Q: What temperature do you need to seal a driveway?

The pail wants 55°F+ air, a 50°F+ first night, and temperatures trending up through the cure. Beaverton clears all three reliably from June through September; outside that, December's 40°F average nights end the argument.

Q: How long after rain can I sealcoat?

Give it a full dry day: the engine fails any start within 24 hours of measurable rain. Filled cracks dry last. Beaverton's rain-day odds run 13–64% across the year, so the same rule costs different months very differently.

Q: How long does driveway sealer take to dry before rain or cars?

Labels say 24–48 hours; this site checks 36 as the honest middle. Foot traffic sooner, tires last. Beaverton's cure risk is mostly rain timing — in January, odds of a wet day inside a 36-hour window run high enough that the strip above is the only sane scheduler.

Q: Can you seal a driveway in the fall?

In Beaverton, early fall works while nights hold: the season's last reliable month is September (average low 52°F against the 50°F first-night rule). After that, warm afternoons sit on cold slabs and the cure stalls.

Q: How often should a driveway be sealed?

Every 2–4 years, or when water stops beading and the surface grays. More often builds a peeling film; less often lets water work the cracks through Beaverton's 27 sub-40°F December nights. New asphalt cures 6–12 months before its first coat — and crack filler goes in a day ahead.

Q: Best month to seal a driveway in OR?

August tops Beaverton's table at 27 days clearing the 55–90°F-rising, 50°F-night, 36-dry-hour stack; August and July together carry the season. Check the OR state page for how the ranking shifts across the state.

In Beaverton, the label math works from June through September: that's the stretch with 8+ workable days a month against typical driveway sealing rules. August leads the calendar with 27 workable days: average high 82°F, low 57°F, rain on 13% of days. The strip above runs Beaverton's live forecast; the table below ranks all 12 months.

GOOD — clears every rule MARGINAL — exactly one soft miss NO — a hard fail, or two soft

The rules this check uses

This table is the whole Beaverton check: pail-consensus thresholds, the rising-trend requirement, and a 36-hour cure standing in for the labels' 24–48 spread.

Typical label thresholds for driveway sealing — the ruleset behind every Beaverton verdict above.
Check	Threshold	Why it matters
Air temperature	55–90°F, and rising	Checked across the working day, 8 a.m.–6 p.m., against Beaverton's hourly forecast — not just the daily high.
Overnight low	≥50°F during the first 24 h	The engine reads every overnight hour in the cure window, not just Beaverton's forecast low.
Dry before	≤0.05" rain in the prior 24 h	Asphalt must be fully dry; sealer will not bond to damp pavement.
Dry after	<0.05" rain for 36 h after (48 h cool or shaded driveways want 48 h)	Most sealers list 24–48 dry hours; this site checks 36.
Evening dew-point spread	≥5°F from 6–11 pm	Scored on the worst hour between 6 and 11 p.m., when surfaces cool past the air.
Daytime humidity	≤85%	Water-based sealer dries by evaporation; humid air stalls it.
Wind	≤20 mph (dust and debris in wet sealer up to 28 mph)	Wind wrecks application first (drift, lap marks) and carries debris into wet work second.

Always follow your product label — formulas vary. These rows are the industry-typical range; the can in your Beaverton garage is the contract.

Best months for driveway sealing in Beaverton

Workable days in Beaverton, OR: days meeting the temperature rules, discounted by NOAA rain odds — a 1991–2020 estimate, not a forecast.
Month	Avg high	Avg low	Rain odds/day	Workable days
January	50°F	40°F	64%	0
February	54°F	40°F	62%	0
March	58°F	42°F	63%	0
April	63°F	45°F	56%	0
May	70°F	50°F	44%	8
June	73°F	53°F	33%	20
July	81°F	56°F	14%	27
August	82°F	57°F	13%	27
September	76°F	52°F	32%	19
October	65°F	47°F	53%	0
November	55°F	43°F	63%	0
December	49°F	40°F	61%	0

The working season runs June through September — about 101 workable days a year. The edges are night-limited: label rules want overnight lows of 50°F+, and Beaverton's nights only average that from June to September. For the statewide picture, the Oregon page compares peak months city by city.

Beaverton has a real wet/dry rhythm: January brings rain on 64% of days versus 13% in August. When the calendar gives you a August-side window, the dry-before and dry-after rules nearly take care of themselves.

The other driveway job reads differently: pouring concrete in Beaverton cares about two safe nights, not rising afternoons.

Numbers above come from NOAA's 1991–2020 normals for Nature Park-Beaverton, Or Us, 2.9 km from the city center — close enough that neighborhood microclimates (shade lines, river valleys, urban heat) matter more than station distance. See how these day counts are scored.

Beaverton by the numbers

August is Beaverton's heat peak: 82°F typical high, 0 days over 90°F.
Coldest month: December — 49°F highs over 40°F nights.
Wet-to-dry spread: 64% rain days in January versus 13% in August.
Overnight lows clear 50°F from June to September in a normal year.
Add it up and Beaverton banks 101 workable days a year for driveway sealing.

Prep checklist

The strip above is hunting one shape: 55°F rising, a 50°F+ night, 36 dry hours. Beaverton produces it 27 days in a typical August.
Run crack filler the previous afternoon — filler needs its own skin time before topcoating.
Sweep to bare asphalt and kill the oil spots first — emulsion won't bond through either.
Confirm the lookback: under 0.05" of rain in the prior 24 h — after a January shower (64% of days), cracks hold water longest.
Tape the garage slab and sidewalk lines with edging tape — drips on concrete are forever.
Pull thin passes with a squeegee/brush combo, back-brushing the texture as you go.
Morning start at the garage end, working toward the street — Beaverton's August gives the coat 82°F daylight before the evening spread tightens.
Keep tires off through the full cure — with August nights at 57°F, shaded strips need the long end of 24–48 h.

Gear that saves a window

FTC note: the gear below is unlinked until the affiliate program is switched on. See the affiliate disclosure.

Driveway sealer, 5-gal
Coverage runs 250–400 sq ft per pail — measure first.
Edging tape
Keeps the garage slab and sidewalk edges black-free.
Squeegee/brush combo
Pull with the squeegee, back-brush the texture.
Crack filler
Fill cracks a day ahead so filler cures before sealer.

FAQ

What temperature do you need to seal a driveway?

The pail wants 55°F+ air, a 50°F+ first night, and temperatures trending up through the cure. Beaverton clears all three reliably from June through September; outside that, December's 40°F average nights end the argument.

How long after rain can I sealcoat?

Give it a full dry day: the engine fails any start within 24 hours of measurable rain. Filled cracks dry last. Beaverton's rain-day odds run 13–64% across the year, so the same rule costs different months very differently.

How long does driveway sealer take to dry before rain or cars?