TULSA, Okla. – A crisp Halloween dawn grips Green Country under clear skies, lawns coated in silvery frost and breaths visible in the early chill. Temperatures hover near freezing across much of eastern Oklahoma, as the National Weather Service keeps a Frost Advisory in effect until 9 a.m. Friday. The calm air and clear sky create perfect radiational cooling, setting up one of the coldest mornings of the season so far.
According to the National Weather Service in Tulsa, temperatures dipped as low as 35°F in rural valleys, prompting reminders for residents to cover outdoor plants and protect sensitive vegetation. Frost formation is expected to end shortly after sunrise as sunshine and dry air warm the region into the upper 60s by afternoon.
By Saturday, weak disturbances to the west could bring a 20% chance of light rain across northeastern Oklahoma and parts of I-44. While totals will remain low, a brief sprinkle may dampen roadways or outdoor plans during the afternoon. Temperatures remain cool, topping out near 58°F before clearing returns.
Sunday brings brighter, milder conditions again, with highs in the low 60s and calm winds — ideal for outdoor events, fall yardwork, or early holiday decorating.
Looking ahead, a warming trend begins Monday as south winds return, pushing highs back into the upper 60s to near 70°F through midweek. Long-range outlooks show above-normal temperatures persisting into the first week of November, offering a brief pause from cold mornings before another stronger front approaches later next weekend.
Five-Day Forecast for Tulsa, OK:
Fri: 66/45 – Patchy frost early; sunny and calm.
Sat: 58/35 – 20% chance of light rain; clearing by late day.
Sun: 61/47 – Sunny; calm and pleasant.
Mon: 69/50 – Sunny; warming trend begins.
Tue: 74/56 – Mostly sunny; breezy south winds.
