Is it good to stain in Norman, OK this week?
A live 7-day go/no-go calendar for deck & fence stain in Norman, built from the local forecast against the 5°F-above-dew-point rule. We lead with the signal a weather app misses: overnight condensation risk.
- Dew margin
- 9.7°F
- Overnight dew
- Low
- Rain
- 8%
- Window
- 8am–5pm
Clear to stain: temps 68–90°F, RH under 77%, surface stays 9.7°F+ above the dew point, no rain in the cure window.
- Dew margin
- 7.6°F
- Overnight dew
- Low
- Rain
- 14%
- Window
- 8am–5pm
Hot afternoon (90°F, ceiling 90°F) — stain early and follow the shade.
- Dew margin
- 1.5°F
- Overnight dew
- High
- Rain
- 77%
- Window
- —
High condensation risk overnight — surface dips to within 1.5°F of the 68°F dew point (low 68°F, 100% cloud, 13 mph wind). A fresh stain can blush/blister. Stop 4h before dew falls.
- Dew margin
- -4.9°F
- Overnight dew
- High
- Rain
- 66%
- Window
- —
High condensation risk overnight — surface dips to within -4.9°F of the 64°F dew point (low 58°F, 0% cloud, 8 mph wind). A fresh stain can blush/blister. Stop 4h before dew falls.
- Dew margin
- -4.6°F
- Overnight dew
- High
- Rain
- 42%
- Window
- —
High condensation risk overnight — surface dips to within -4.6°F of the 61°F dew point (low 56°F, 100% cloud, 6 mph wind). A fresh stain can blush/blister. Stop 4h before dew falls.
- Dew margin
- -10.5°F
- Overnight dew
- High
- Rain
- 33%
- Window
- —
High condensation risk overnight — surface dips to within -10.5°F of the 63°F dew point (low 53°F, 100% cloud, 4 mph wind). A fresh stain can blush/blister. Stop 4h before dew falls.
- Dew margin
- -3.1°F
- Overnight dew
- High
- Rain
- 18%
- Window
- —
High condensation risk overnight — surface dips to within -3.1°F of the 60°F dew point (low 57°F, 100% cloud, 10 mph wind). A fresh stain can blush/blister. Stop 4h before dew falls.
- Clear to stain: temps 68–90°F, RH under 77%, surface stays 9.7°F+ above the dew point, no rain in the cure window.
Good to go. These are forecast numbers — confirm the surface temperature on-site before you start.
Why these thresholds
Stain applied to a damp or dew-wet board can't penetrate — it beads, stays tacky and flakes. Wood must be dry and stay above the dew point while it sets.
- • Surface temp must stay 5°F above the dew point through application and cure (ASTM D3276 / ISO 8502-42).
- • Air + surface in the 50–90°F band (low-temp lines to 45°F).
- • Humidity under 85%; ideally under 70%.
- • No rain for 24h after application.
- • We use the forecast ground-surface temperature as a surface-temp proxy — confirm on-site with an IR thermometer.
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Watch this job site 24/7
Get an email the moment overnight dew, rain, or an out-of-range stretch threatens a fresh coat — and a morning digest with the best window ahead. No app to check; we watch the forecast for you.