Is it good to stain in Idaho Falls, ID this week?
A live 7-day go/no-go calendar for deck & fence stain in Idaho Falls, 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
- 2.1°F
- Overnight dew
- Watch
- Rain
- 34%
- Window
- —
Rain likely in the 24h cure window (34% chance, ~6.2mm) — it can wash out or mar an uncured stain.
- Dew margin
- 12.3°F
- Overnight dew
- Low
- Rain
- 41%
- Window
- —
Rain likely in the 24h cure window (41% chance, ~2.8mm) — it can wash out or mar an uncured stain.
- Dew margin
- 21.3°F
- Overnight dew
- Low
- Rain
- 4%
- Window
- 8am–5pm
Clear to stain: temps 55–80°F, RH under 37%, surface stays 21.3°F+ above the dew point, no rain in the cure window.
- Dew margin
- 5.8°F
- Overnight dew
- Low
- Rain
- 8%
- Window
- 8am–5pm
Clear to stain: temps 59–86°F, RH under 29%, surface stays 5.8°F+ above the dew point, no rain in the cure window.
- Dew margin
- 3.8°F
- Overnight dew
- Watch
- Rain
- 6%
- Window
- 8am–5pm
Watch overnight dew — surface comes within 3.8°F of the dew point (margin is 5°F). Time the coat to dry well before evening.
- Dew margin
- 16.1°F
- Overnight dew
- Low
- Rain
- 9%
- Window
- 8am–5pm
Clear to stain: temps 59–85°F, RH under 67%, surface stays 16.1°F+ above the dew point, no rain in the cure window.
- Dew margin
- 36.1°F
- Overnight dew
- Low
- Rain
- 0%
- Window
- 8am–5pm
Clear to stain: temps 57–90°F, RH under 35%, surface stays 36.1°F+ above the dew point, no rain in the cure window.
- Rain likely in the 24h cure window (34% chance, ~6.2mm) — it can wash out or mar an uncured stain.
- Watch overnight dew — surface comes within 2.1°F of the dew point (margin is 5°F). Time the coat to dry well before evening.
- Cold mornings (down to 45°F, floor is 50°F) — wait for the surface to warm past midday before you stain.
Hold off. 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.