TULSA, Okla. – Dangerous heat will grip eastern Oklahoma on Saturday, with humidity pushing heat stress levels to unsafe ranges in full sun. Outdoor workers and athletes could face high to extreme risk without frequent breaks and hydration, especially in Tulsa, Muskogee and Fort Smith.
According to the National Weather Service in Tulsa, Wet Bulb Globe Temperatures—a measure of heat strain under direct sunlight—will require breaks as often as every 15 minutes for those exerting outdoors. The highest risk zones stretch along the Arkansas border, including Fayetteville and Sallisaw, where caution is urged through the afternoon.
Road crews, sports teams and fairgoers are encouraged to limit time in direct sun and plan shaded rest periods. Emergency managers warn that heat-related illness can set in quickly under these conditions, particularly for children and older adults.
The heat continues into early next week with highs in the low to mid-90s across Tulsa, Fort Smith and McAlester. Drier air will keep conditions mostly stable until midweek, when temperatures return closer to seasonal norms. At that point, shower and thunderstorm chances rise across the region, signaling a change toward wetter weather.
Advisories may be extended through the weekend as forecasters monitor incoming changes.
Five Day Forecast for Tulsa, Oklahoma:
- Saturday: High 94, humid, dangerous outdoor heat stress risk
- Sunday: High 93, partly sunny, still hot with humidity
- Monday: High 91, mostly dry, slight cooling trend
- Tuesday: High 90, turning more seasonal, storm chances late
- Wednesday: High 86, scattered showers and thunderstorms likely
