Expires:202512221600;;005556 FPUS54 KTSA 220415 ZFPTSA Zone Forecasts for Eastern Oklahoma and Northwest Arkansas National Weather Service Tulsa OK 1013 PM CST Sun Dec 21 2025 OKZ066-221600- Okmulgee- Including the city of Okmulgee 1013 PM CST Sun Dec 21 2025 .TONIGHT...Mostly cloudy. Lows in the mid 40s. Southeast winds 5 to 10 mph. .MONDAY...Mostly cloudy in the morning, then clearing. Highs in the mid 60s. South winds 5 to 10 mph with gusts up to 20 mph. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Not as cool with lows in the mid 50s. South winds 5 to 10 mph. .TUESDAY...Sunny. Highs in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. .TUESDAY NIGHT...Mostly clear. Lows in the lower 60s. South winds 5 to 10 mph. .WEDNESDAY...Mostly sunny. Highs in the upper 70s. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 60s. .CHRISTMAS DAY...Mostly sunny. Highs in the upper 70s. .THURSDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 50s. .FRIDAY...Sunny. Highs in the upper 70s. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 50s. .SATURDAY...Partly sunny. Highs in the mid 70s. .SATURDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A 20 percent chance of showers. Cooler with lows in the mid 40s. .SUNDAY...Sunny. Much cooler with highs in the upper 50s. $$