Weather Log

You cannot control the weather, but you can control how you document it. Accurate weather logs are your best defense against unfair delay penalties.
Construction Weather Log Documentation

Understanding Weather Log

Weather logs provide a factual, historical record of environmental conditions at the job site to justify schedule extensions and document non-workable days.

Key Information to Include

  • Temperature: Highs and lows affecting materials (e.g., concrete curing).
  • Precipitation: Rain, snow, or ice amounts.
  • Wind Conditions: High winds that prevent crane operation or roofing.
  • Site Impact: How the weather specifically halted or altered work.

Benefits of Digital Tracking

  • Schedule Justification: Provides proof needed to grant "weather days" and extend the contract.
  • Protects Against Liquidated Damages: Proves delays were outside the contractor's control.
  • Quality Context: Explains conditions during specific material installations.

Best Practices & Workflow

Log weather twice a day. Don't just record the forecast; record the actual impact on the site, often included as part of your daily reports.

Frequently Asked Questions

Should we log weather if we don't work that day?

Yes. If weather prevents work, logging it is critical to claim a weather delay day.

What weather metrics matter most?

It depends on the trade. Concrete needs temperature tracking; roofing and crane work need wind tracking; earthwork needs precipitation tracking.

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