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Wheaton, MO Weather Forecast
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Wheaton Weather Forecast
| REST OF TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
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| Partly Cloudy | Chance of T-Storm | Mostly Clear | Sunny | Mostly Clear | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of T-Storm | Chance of Showers | Chance of Showers |
| Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Lo: 70°FLo: 21°C | Hi: 99°FHi: 37°C | Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Hi: 85°FHi: 29°C Lo: 71°FLo: 22°C | Hi: 85°FHi: 29°C Lo: 71°FLo: 22°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 91°FHi: 33°C Lo: 69°FLo: 21°C |
| POP: 20% | POP: 20% | POP: 70% | POP: 70% | POP: 30% | POP: 30% | POP: 50% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 AM CDT Mon Sep 07 2026 
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Issued: 1203 AM CDT Mon Sep 7 2026
Key Messages
- An Extreme Heat Warning has been extended through Monday evening for counties west of Highway 65. Maximum afternoon heat index values around 105+.
- Hot and dry conditions are worsening drought and increasing fire danger. Above average temperatures are likely this week with highs in the 90s to around 100 Tuesday and Wednesday. Additional heat headlines may be warranted.
- There is a 50-80 % chance of showers and thunderstorms Wednesday evening into Thursday.
Aviation
/06Z TAFS THROUGH 06Z ...