Is it good to coat in Billings, MT this week?
A live 7-day go/no-go calendar for epoxy & resin floors in Billings, 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
- 5.2°F
- Overnight dew
- Low
- Rain
- 14%
- Window
- 10am–5pm
Cold mornings (down to 46°F, floor is 50°F) — wait for the surface to warm past midday before you coat.
- Dew margin
- 9.3°F
- Overnight dew
- Low
- Rain
- 2%
- Window
- 9am–5pm
Cold mornings (down to 47°F, floor is 50°F) — wait for the surface to warm past midday before you coat.
- Dew margin
- 13°F
- Overnight dew
- Low
- Rain
- 1%
- Window
- 9am–5pm
Cold mornings (down to 47°F, floor is 50°F) — wait for the surface to warm past midday before you coat.
- Dew margin
- 11.1°F
- Overnight dew
- Low
- Rain
- 2%
- Window
- 8am–5pm
Clear to coat: temps 59–74°F, RH under 46%, surface stays 11.1°F+ above the dew point, no rain in the cure window.
- Dew margin
- 11.1°F
- Overnight dew
- Low
- Rain
- 2%
- Window
- 9am–5pm
Cold mornings (down to 47°F, floor is 50°F) — wait for the surface to warm past midday before you coat.
- Dew margin
- 11.6°F
- Overnight dew
- Low
- Rain
- 8%
- Window
- 9am–5pm
Cold mornings (down to 49°F, floor is 50°F) — wait for the surface to warm past midday before you coat.
- Dew margin
- 12°F
- Overnight dew
- Low
- Rain
- 6%
- Window
- 8am–5pm
Clear to coat: temps 60–79°F, RH under 39%, surface stays 12°F+ above the dew point, no rain in the cure window.
- Cold mornings (down to 46°F, floor is 50°F) — wait for the surface to warm past midday before you coat.
Caution. These are forecast numbers — confirm the surface temperature on-site before you start.
Why these thresholds
Installing within 5°F of the dew point causes amine blush / carbamation — a cloudy, greasy, hazed floor. The slab surface temp, not the air, is what counts.
- • Surface temp must stay 5°F above the dew point through application and cure (ASTM D3276 / ISO 8502-42).
- • Air + surface in the 50–86°F band (low-temp lines to 50°F).
- • Humidity under 85%; ideally under 80%.
- • 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.
Free in the beta
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.