Is it good to stain in Salt Lake City, UT this week?
A live 7-day go/no-go calendar for deck & fence stain in Salt Lake City, 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
- 23.2°F
- Overnight dew
- Low
- Rain
- 0%
- Window
- 8am–5pm
Clear to stain: temps 54–81°F, RH under 56%, surface stays 23.2°F+ above the dew point, no rain in the cure window.
- Dew margin
- 36.4°F
- Overnight dew
- Low
- Rain
- 1%
- Window
- 8am–5pm
Clear to stain: temps 57–88°F, RH under 36%, surface stays 36.4°F+ above the dew point, no rain in the cure window.
- Dew margin
- 28.9°F
- Overnight dew
- Low
- Rain
- 1%
- Window
- 8am–5pm
Clear to stain: temps 65–86°F, RH under 33%, surface stays 28.9°F+ above the dew point, no rain in the cure window.
- Dew margin
- 33.4°F
- Overnight dew
- Low
- Rain
- 0%
- Window
- 8am–5pm
Clear to stain: temps 68–88°F, RH under 24%, surface stays 33.4°F+ above the dew point, no rain in the cure window.
- Dew margin
- 23.8°F
- Overnight dew
- Low
- Rain
- 3%
- Window
- 8am–5pm
Clear to stain: temps 70–87°F, RH under 24%, surface stays 23.8°F+ above the dew point, no rain in the cure window.
- Dew margin
- 29.8°F
- Overnight dew
- Low
- Rain
- 0%
- Window
- 8am–5pm
Clear to stain: temps 69–84°F, RH under 31%, surface stays 29.8°F+ above the dew point, no rain in the cure window.
- Dew margin
- 32.7°F
- Overnight dew
- Low
- Rain
- 0%
- Window
- 8am–5pm
Clear to stain: temps 69–85°F, RH under 22%, surface stays 32.7°F+ above the dew point, no rain in the cure window.
- Clear to stain: temps 54–81°F, RH under 56%, surface stays 23.2°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.