Current Conditions

O'Fallon, Missouri

60°F15°C
Cloudy

Cloudy. Temperatures will hold near 59°F. A breeze from the SSE at 8 mph.Cloudy. Temperatures will hold near 15°C. A breeze from the SSE at 13 km/h.

Wind

SSE 9 mph15 km/h

Humidity

100%

Cloud Cover

100%

As of Monday, November 2, 2026 at 7:42 AM CST

Today's Outlook

Day

Cloudy. Temperatures will range from 58°F to 66°F. A breeze from the SSE at 11–12 mph.Cloudy. Temperatures will range from 14°C to 19°C. A breeze from the SSE at 18–19 km/h.

Night

There is a low chance of brief drizzle in the morning. Temperatures will hold near 67°F. Cloudy, with a strong breeze from the SSE at 13–14 mph.There is a low chance of brief drizzle in the morning. Temperatures will hold near 19°C. Cloudy, with a strong breeze from the SSE at 21–23 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Low chance of drizzleHigh 67°F20°CLow 57°F14°CPrecip 0.02 in0.4 mm16%Cloud 98%Wind SSE 10 mph16 km/hCloudy. Temperatures will range from 58°F to 66°F. A breeze from the SSE at 11–12 mph.Cloudy. Temperatures will range from 14°C to 19°C. A breeze from the SSE at 18–19 km/h.There is a low chance of brief drizzle in the morning. Temperatures will hold near 67°F. Cloudy, with a strong breeze from the SSE at 13–14 mph.There is a low chance of brief drizzle in the morning. Temperatures will hold near 19°C. Cloudy, with a strong breeze from the SSE at 21–23 km/h.
Light rainHigh 69°F21°CLow 61°F16°CPrecip 0.51 in13 mm100%Cloud 96%Wind SSE 13 mph21 km/hLight rain is expected throughout the day. Temperatures will range from 65°F to 69°F. Cloudy, with a strong breeze from the SSE at 15–16 mph.Light rain is expected throughout the day. Temperatures will range from 18°C to 21°C. Cloudy, with a strong breeze from the SSE at 24–26 km/h.Light rain is expected for much of the night. Temperatures will range from 55°F to 65°F. Cloudy, with a breeze from the SSW at 10–13 mph.Light rain is expected for much of the night. Temperatures will range from 13°C to 18°C. Cloudy, with a breeze from the SSW at 16–21 km/h.
Medium chance of drizzleHigh 61°F16°CLow 51°F10°CPrecip 0.12 in3 mm84%Cloud 58%Wind SW 9 mph15 km/hA breeze from the WSW at 10–12 mph. Temperatures will range from 55°F to 59°F. Mostly cloudy.A breeze from the WSW at 16–19 km/h. Temperatures will range from 13°C to 15°C. Mostly cloudy.A breeze from the SW at 8–9 mph. Temperatures will range from 47°F to 57°F, feeling as cold as 42°F. Clear.A breeze from the SW at 13–14 km/h. Temperatures will range from 8°C to 14°C, feeling as cold as 6°C. Clear.
Medium chance of light rainHigh 64°F18°CLow 47°F8°CFeels 42°F6°CPrecip 0.04 in1 mm42%Cloud 30%Wind SW 8 mph14 km/hThere is a low chance of brief drizzle in the afternoon. Temperatures will range from 47°F to 64°F. Mostly clear, with a breeze from the SW at 9–10 mph.There is a low chance of brief drizzle in the afternoon. Temperatures will range from 8°C to 18°C. Mostly clear, with a breeze from the SW at 14–16 km/h.There is a medium chance of light rain in the evening. Temperatures will range from 49°F to 60°F. Mostly cloudy, with a breeze from the W at 8 mph.There is a medium chance of light rain in the evening. Temperatures will range from 9°C to 16°C. Mostly cloudy, with a breeze from the W at 13 km/h.
Low chance of drizzleHigh 53°F12°CLow 48°F9°CFeels 45°F7°CPrecip 0.06 in1.4 mm47%Cloud 92%Wind NW 8 mph13 km/hCloudy. Temperatures will range from 49°F to 53°F. There is a marginal chance of drizzle throughout the day. A breeze from the NW at 9 mph.Cloudy. Temperatures will range from 9°C to 12°C. There is a marginal chance of drizzle throughout the day. A breeze from the NW at 14 km/h.Cloudy. Temperatures will range from 46°F to 51°F. A breeze from the NW at 8 mph.Cloudy. Temperatures will range from 8°C to 11°C. A breeze from the NW at 13 km/h.
CloudyHigh 51°F10°CLow 46°F8°CFeels 42°F6°CPrecip 0.01 in0.3 mm5%Cloud 86%Wind WNW 7 mph11 km/hCloudy. Temperatures will range from 46°F to 51°F. There is a marginal chance of drizzle around midday.Cloudy. Temperatures will range from 8°C to 11°C. There is a marginal chance of drizzle around midday.Mostly cloudy. Temperatures will range from 42°F to 49°F. There is a marginal chance of drizzle throughout the night.Mostly cloudy. Temperatures will range from 6°C to 9°C. There is a marginal chance of drizzle throughout the night.
BreezeHigh 53°F11°CLow 42°F6°CFeels 38°F3°CPrecip 0.03 in0.7 mm13%Cloud 44%Wind W 7 mph12 km/hA breeze from the W at 8 mph, and there is a marginal chance of drizzle throughout the day. Temperatures will range from 42°F to 53°F. Partly cloudy.A breeze from the W at 13 km/h, and there is a marginal chance of drizzle throughout the day. Temperatures will range from 6°C to 12°C. Partly cloudy.A breeze from the WSW at 7 mph, and there is a marginal chance of brief drizzle in the afternoon. Temperatures will range from 40°F to 50°F, feeling as cold as 35°F. Mostly clear.A breeze from the WSW at 11 km/h, and there is a marginal chance of brief drizzle in the afternoon. Temperatures will range from 4°C to 10°C, feeling as cold as 2°C. Mostly clear.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
MondayNov 267°F20°C57°F14°C0.02 in0.4 mm· 16%98%Low chance of drizzleSSE 10 mph16 km/h
TuesdayNov 369°F21°C61°F16°C0.51 in13 mm· 100%96%Light rainSSE 13 mph21 km/h
WednesdayNov 461°F16°C51°F10°C0.12 in3 mm· 84%58%Medium chance of drizzleSW 9 mph15 km/h
ThursdayNov 564°F18°C47°F8°C
Feels 42°F6°C
0.04 in1 mm· 42%30%Medium chance of light rainSW 8 mph14 km/h
FridayNov 653°F12°C48°F9°C
Feels 45°F7°C
0.06 in1.4 mm· 47%92%Low chance of drizzleNW 8 mph13 km/h
SaturdayNov 751°F10°C46°F8°C
Feels 42°F6°C
0.01 in0.3 mm· 5%86%CloudyWNW 7 mph11 km/h
SundayNov 853°F11°C42°F6°C
Feels 38°F3°C
0.03 in0.7 mm· 13%44%BreezeW 7 mph12 km/h
MondayNov 958°F14°C40°F4°C
Feels 35°F1°C
0 in0.1 mm· 3%25%BreezeWSW 7 mph12 km/h
TuesdayNov 1060°F16°C41°F5°C
Feels 37°F3°C
0 in0.1 mm· 1%22%BreezeWSW 7 mph11 km/h
WednesdayNov 1160°F16°C41°F5°C
Feels 37°F3°C
0.02 in0.6 mm· 8%47%BreezeS 7 mph11 km/h
ThursdayNov 1260°F16°C45°F7°C
Feels 41°F5°C
0.06 in1.5 mm· 16%54%Low chance of showersSSE 7 mph12 km/h
FridayNov 1361°F16°C47°F8°C
Feels 43°F6°C
0.12 in3.1 mm· 18%58%Low chance of showersS 8 mph13 km/h
SaturdayNov 1461°F16°C47°F9°C
Feels 44°F6°C
0.09 in2.3 mm· 17%50%Low chance of showersSSW 8 mph13 km/h
SundayNov 1560°F16°C47°F8°C
Feels 43°F6°C
0.08 in2 mm· 15%48%BreezeSSW 8 mph13 km/h
MondayNov 1660°F16°C47°F8°C
Feels 43°F6°C
0.07 in1.7 mm· 12%51%BreezeSSW 8 mph13 km/h

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Coordinates: 38.8106°N, 90.6998°W·Elevation: 165m·Timezone: America/Chicago·Population: 85,040