Concrete Temperature Planning Helper
Compare entered concrete and air temperatures with practical hot/cold-weather planning flags.
Editorial review: 2026-09-29 · How we review technical content
Key takeaways
- Flag weather conditions that deserve additional hot- or cold-weather planning before placement.
- Hot- and cold-weather requirements depend on concrete temperature, member size, mixture, curing/protection method, rate of evaporation, ambient trend, and the governing specification.
Concrete Temperature Planning Helper
Flag weather conditions that deserve additional hot- or cold-weather planning before placement.
What this calculator does
Flag weather conditions that deserve additional hot- or cold-weather planning before placement.
The tool does not calculate code compliance; it combines entered temperature, wind, sun, and overnight conditions into a practical planning checklist so crews remember evaporation, setting, protection, and temperature-control issues.
How to use the result
Hot- and cold-weather requirements depend on concrete temperature, member size, mixture, curing/protection method, rate of evaporation, ambient trend, and the governing specification.
How this calculator works
This planning helper flags combinations of concrete temperature, air temperature, wind, sun and overnight low that warrant hot- or cold-weather controls.
It intentionally does not calculate a formal evaporation rate because that requires current humidity and other measured variables and must be applied under the governing specification/procedure.
Input checklist
- Concrete temperature: Enter the project-specific concrete temperature in °F.
- Air temperature: Enter the project-specific air temperature in °F.
- Wind condition: Enter the project-specific wind condition.
- Direct sun: Enter the project-specific direct sun.
- Expected overnight low: Enter the project-specific expected overnight low in °F.
Worked example
A moderate air temperature can still create rapid surface drying when concrete is warm, wind is strong, humidity is low, and the slab is in direct sun.
Field checklist
- Check a current jobsite forecast.
- Measure concrete temperature as required.
- Plan curing/protection materials before trucks arrive.
- Coordinate mixture adjustments with the producer.
References & further reading
- ACI SPEC-301-20 — Specifications for Concrete Construction — Reference specification used when incorporated into project specifications.
- NRMCA Concrete In Practice (CIP) — Industry education covering common concrete field problems and practices.