| National Weather Service Forecast for:
Stillwater, OK Issued by: National Weather Service Norman, OK |
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| Updated: Tue, 08-25-2026 12:12am CDT | ||||||||||||||||||||||||||||||||||||||||
| Stillwater, OK | ||||||||||||||||||||||||||||||||||||||||
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| Overnight |
Partly cloudy, with a low around 73. East wind around 5 mph. |
| Tuesday |
Mostly sunny, with a high near 99. Heat index values as high as 104. Northeast wind 3 to 8 mph. |
| Tuesday Night |
Mostly clear, with a low around 73. Heat index values as high as 102. Northeast wind 3 to 7 mph. |
| Wednesday |
Partly sunny, with a high near 95. Heat index values as high as 99. North northeast wind 5 to 8 mph. |
| Wednesday Night |
Partly cloudy, with a low around 70. Northeast wind 3 to 8 mph. |
| Thursday |
Mostly sunny, with a high near 93. |
| Thursday Night |
Mostly clear, with a low around 68. |
| Friday |
Sunny, with a high near 96. |
| Friday Night |
Mostly clear, with a low around 72. |
| Saturday |
Sunny, with a high near 101. |
| Saturday Night |
Mostly clear, with a low around 76. |
| Sunday |
Sunny, with a high near 102. |
| Sunday Night |
Mostly clear, with a low around 78. |
| Monday |
Sunny, with a high near 102. |
Forecast from NOAA-NWS for Stillwater, OK.