GHSA By-law 2.67 requires WBGT-based practice modification in all sports during times of extremely high heat and humidity, and the by-law says the policy itself runs "this policy is year-round, including during the summer" — this is not a football-season rule. Where Georgia is unusual is how it expects the reading to be taken.
The by-law's wording: "A scientifically-approved instrument that measures the Wet Bulb Globe Temperature must be utilized at each practice (prior to October 1) to ensure that the written policy is being followed properly." Readings should be taken at least every 30 minutes beginning 30 minutes before practice, and monitors must be calibrated at least every 2 years.
Read that date limit carefully, because GHSA's two documents do not agree on it. The by-law attaches "(prior to October 1)" to its instrument sentence, while GHSA's own practice-policy reminder states the monitor requirement with no date limit at all. This site takes the stricter reading and treats Georgia as a device state all year. If you are planning after October 1, ask your athletic director which one your school is held to.
GHSA has said it in as many words: "Phone applications are not approved for WBGT measurements at this time." And the same reminder leaves no room for a practice without a device: "A scientifically approved Wet Bulb Globe Temperature (WBGT) monitor must be used at every outdoor practice to ensure compliance with GHSA policy."
App and web estimates — including this site — are NOT accepted for GHSA compliance. Use WBGT Check to plan tomorrow's schedule; use your calibrated on-site meter to run practice.
GHSA — Reminder: Practice Policy for Heat and Humidity (verified 2026-08-09)
| WBGT (°F) | Required modifications |
|---|---|
| GREEN Under 82.0 |
|
| YELLOW 82.0 - 86.9 |
|
| ORANGE 87.0 - 89.9 |
|
| RED 90.0 - 92.0 |
|
| BLACK Over 92.0 |
|
Once a reading has held a range for 15 minutes, that range's restrictions apply for the rest of the practice — and they do not lift if the WBGT falls back. GHSA states it twice: "Once a WBGT reading reaches a specific range and remains there for 15 consecutive minutes, the practice restrictions for that range must be followed for the remainder of that practice." and "Schools may not revert to a lower restriction level, even if the WBGT reading later decreases." Going the other way is immediate: "If, during the same practice, the WBGT increases into a higher range and remains there for 15 consecutive minutes, the restrictions for the higher range must immediately be implemented."
For planning, that means the hottest range your practice window touches is the range you should staff and schedule for, not the range you start in.
Practice time runs from when players report to the practice area until they leave it. Conditioning (weights, sprints, timed runs) counts as practice time — including "voluntary" workouts. Walk-throughs are separate: max one hour, no equipment, no conditioning, no contact.
All thresholds and modification text above derive from GHSA By-law 2.67 (Practice Policy for Heat and Humidity), cross-checked on 2026-08-09. GHSA Constitution By-law 2.67 — Practice Policy for Heat and Humidity
wbgtcheck.com is an independent tool. It is not affiliated with, endorsed by, or connected to the UIL, GHSA, NFHS, NATA, or any state athletic association.
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