| National Weather Service Forecast for:
2 Miles NNE O'Fallon MO Issued by: National Weather Service Saint Louis, MO |
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| Updated: 1:21 am CDT Jun 30, 2026 | ||||||||||||||||||
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| Overnight |
Mostly clear, with a low around 75. Southwest wind 6 to 8 mph. |
| Tuesday |
Sunny and hot, with a high near 97. Heat index values as high as 107. Southwest wind 5 to 8 mph. |
| Tuesday Night |
Clear, with a low around 76. Southwest wind around 6 mph. |
| Wednesday |
Sunny and hot, with a high near 97. Heat index values as high as 107. Southwest wind 5 to 7 mph. |
| Wednesday Night |
Clear, with a low around 77. South wind around 6 mph. |
| Thursday |
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 97. |
| Thursday Night |
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 76. |
| Friday |
Sunny, with a high near 96. |
| Friday Night |
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75. |
| Independence Day |
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. |
| Saturday Night |
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. |
| Sunday |
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. |
| Sunday Night |
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. |
| Monday |
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. |
Forecast from NOAA-NWS for 2 Miles NNE O'Fallon MO.
