Weather World
City of Duncan, OKDuncan, OK 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Duncan, OK Weather Forecast
Duncan, OK Weather Forecast Date: 129 AM CDT Mon Sep 14 2026
The area/counties/county of: Stephens, including the city of Duncan.or toggle through each period.
Rest of Tonight... Clear. Lows in the upper 70s. South winds around 10 mph with gusts up to 20 mph.
Monday... Sunny, hot with highs around 101. South winds 10 to 15 mph with gusts up to 30 mph.
Monday Night... Clear. Lows in the upper 70s. South winds 10 to 15 mph with gusts up to 25 mph.
Tuesday... Sunny, hot with highs around 101. South winds 10 to 15 mph.
Tuesday Night... Clear. Lows in the mid 70s. South winds 10 to 15 mph.
Wednesday... Sunny. Highs in the upper 90s.
Wednesday Night... Clear. Lows in the mid 70s.
Thursday... Sunny. Highs in the mid 90s.
Thursday Night... Mostly clear. Lows in the lower 70s.
Friday... Sunny. Highs in the mid 90s.
Friday Night... Mostly clear. Lows in the lower 70s.
Saturday... Sunny with a 20% chance of showers. Highs in the mid 90s.
Saturday Night... Mostly clear in the evening, then becoming partly cloudy. A 20% chance of showers. Lows in the upper 60s.
POP = Probability of Precipitation
Duncan Radar Loop
Use the map search tool if you want to place a location marker on the radar map...