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63366 Weather — O Fallon, MO

Forecast for the 63366 area (O Fallon, Missouri). Full city forecast: O'Fallon, MO →

Right now

Updated 2:27 PM

87°

Sunny
Feels like 89°

Wind

11 mph NW

Humidity

50%

Pressure

30.03 inHg

Sunrise/Sunset

6:18 AM · 7:55 PM

Hourly

48 hours →

Now

87°

15:00

87°

16:00

87°

17:00

86°

18:00

85°

10%

19:00

82°

20:00

77°

12%

21:00

75°

14%

10-day forecast

Complete forecast →

Today Showers

87° 71° 75%

Tue, Aug 18 Sunny

91° 67° 8%

Wed, Aug 19 Showers

87° 67° 79%

Thu, Aug 20 Sunny

83° 68° 73%

Fri, Aug 21 Sunny

85° 64° 4%

Sat, Aug 22 Sunny

87° 65° 3%

Sun, Aug 23 Sunny

91° 67° 17%

Mon, Aug 24 Showers

89° 71° 65%

Tue, Aug 25 Sunny

96° 70° 3%

Wed, Aug 26 Sunny

91° 65° 3%

Nearby ZIP codes

About ZIP-level forecasts

This forecast is computed for the geographic center of the 63366 ZIP code area rather than the city as a whole — in hilly terrain or along the coast, conditions can differ noticeably from one neighborhood to the next. ZIP boundaries and coordinates follow the GeoNames postal database (CC-BY).