Current Conditions
O'Fallon, Illinois
58°F14°C
BreezeA breeze from the SW at 9 mph. Temperatures will hold near 59°F. Partly cloudy.A breeze from the SW at 14 km/h. Temperatures will hold near 15°C. Partly cloudy.
Wind
SW 9 mph14 km/h
Humidity
100%
Cloud Cover
61%
As of Wednesday, November 4, 2026 at 3:44 AM CST
Today's Outlook
Day
Cloudy. Temperatures will hold near 58°F. A breeze from the WSW at 9–10 mph.Cloudy. Temperatures will hold near 14°C. A breeze from the WSW at 14–16 km/h.
Night
A breeze from the SW at 8 mph. Temperatures will range from 45°F to 57°F. Clear.A breeze from the SW at 13 km/h. Temperatures will range from 7°C to 14°C. Clear.
7-Day Forecast
| Day | Condition | High (°F) | Low (°F) | Precip (mm) | Cloud Cover (%) | Wind (mph) | |
|---|---|---|---|---|---|---|---|
| Medium chance of drizzle | High 63°F17°C | Low 51°F10°C | Precip 0.13 in3.3 mm98% | Cloud 80% | Wind WSW 9 mph14 km/h | Cloudy. Temperatures will hold near 58°F. A breeze from the WSW at 9–10 mph.Cloudy. Temperatures will hold near 14°C. A breeze from the WSW at 14–16 km/h.A breeze from the SW at 8 mph. Temperatures will range from 45°F to 57°F. Clear.A breeze from the SW at 13 km/h. Temperatures will range from 7°C to 14°C. Clear. | |
| Breeze | High 61°F16°C | Low 45°F7°CFeels 41°F5°C | Precip 0 in0 mm— | Cloud 24% | Wind W 8 mph13 km/h | A breeze from the WSW at 9–10 mph. Temperatures will range from 45°F to 61°F. Clear.A breeze from the WSW at 14–16 km/h. Temperatures will range from 7°C to 16°C. Clear.A breeze from the NW at 8–9 mph. Temperatures will range from 50°F to 58°F. Mostly cloudy.A breeze from the NW at 13–14 km/h. Temperatures will range from 10°C to 14°C. Mostly cloudy. | |
| Cloudy | High 52°F11°C | Low 42°F5°CFeels 37°F3°C | Precip 0 in0 mm— | Cloud 91% | Wind NNW 9 mph14 km/h | Cloudy. Temperatures will hold near 50°F. A breeze from the NNW at 9–10 mph.Cloudy. Temperatures will hold near 10°C. A breeze from the NNW at 14–16 km/h.Cloudy. Temperatures will range from 35°F to 48°F. A breeze from the N at 8 mph.Cloudy. Temperatures will range from 2°C to 9°C. A breeze from the N at 13 km/h. | |
| Partly cloudy | High 49°F9°C | Low 35°F2°CFeels 31°F-1°C | Precip 0 in0 mm— | Cloud 49% | Wind NNW 5 mph8 km/h | Partly cloudy. Temperatures will range from 35°F to 49°F.Partly cloudy. Temperatures will range from 2°C to 9°C.Mostly clear. Temperatures will range from 32°F to 46°F, feeling as cold as 27°F.Mostly clear. Temperatures will range from 0°C to 8°C, feeling as cold as -3°C. | |
| Clear | High 55°F13°C | Low 32°F0°CFeels 27°F-3°C | Precip 0 in0 mm— | Cloud 8% | Wind WSW 6 mph10 km/h | Clear. Temperatures will range from 33°F to 55°F, feeling as cold as 27°F.Clear. Temperatures will range from 1°C to 13°C, feeling as cold as -3°C.Clear. Temperatures will range from 35°F to 52°F.Clear. Temperatures will range from 2°C to 11°C. | |
| Breeze | High 62°F17°C | Low 35°F2°CFeels 31°F-1°C | Precip 0 in0 mm— | Cloud 3% | Wind SW 6 mph10 km/h | Clear. Temperatures will range from 35°F to 62°F.Clear. Temperatures will range from 2°C to 17°C.A breeze from the WSW at 8 mph. Temperatures will range from 41°F to 58°F, feeling as cold as 36°F. Clear.A breeze from the WSW at 13 km/h. Temperatures will range from 5°C to 14°C, feeling as cold as 2°C. Clear. | |
| Breeze | High 63°F17°C | Low 41°F5°CFeels 36°F2°C | Precip 0 in0 mm— | Cloud 14% | Wind W 6 mph10 km/h | Mostly clear. Temperatures will range from 41°F to 63°F.Mostly clear. Temperatures will range from 5°C to 17°C.Mostly clear. Temperatures will range from 40°F to 59°F.Mostly clear. Temperatures will range from 4°C to 15°C. |
15-Day Forecast
| Day | High | Low | Precip | Cloud Cover | Condition | Wind | |
|---|---|---|---|---|---|---|---|
 | WednesdayNov 4 | 63°F17°C | 51°F10°C | 0.13 in3.3 mm· 98% | 80% | Medium chance of drizzle | WSW 9 mph14 km/h |
DayCloudy. Temperatures will hold near 58°F. A breeze from the WSW at 9–10 mph.Cloudy. Temperatures will hold near 14°C. A breeze from the WSW at 14–16 km/h. NightA breeze from the SW at 8 mph. Temperatures will range from 45°F to 57°F. Clear.A breeze from the SW at 13 km/h. Temperatures will range from 7°C to 14°C. Clear. | |||||||
 | ThursdayNov 5 | 61°F16°C | 45°F7°C Feels 41°F5°C | 0 in0 mm· — | 24% | Breeze | W 8 mph13 km/h |
DayA breeze from the WSW at 9–10 mph. Temperatures will range from 45°F to 61°F. Clear.A breeze from the WSW at 14–16 km/h. Temperatures will range from 7°C to 16°C. Clear. NightA breeze from the NW at 8–9 mph. Temperatures will range from 50°F to 58°F. Mostly cloudy.A breeze from the NW at 13–14 km/h. Temperatures will range from 10°C to 14°C. Mostly cloudy. | |||||||
 | FridayNov 6 | 52°F11°C | 42°F5°C Feels 37°F3°C | 0 in0 mm· — | 91% | Cloudy | NNW 9 mph14 km/h |
DayCloudy. Temperatures will hold near 50°F. A breeze from the NNW at 9–10 mph.Cloudy. Temperatures will hold near 10°C. A breeze from the NNW at 14–16 km/h. NightCloudy. Temperatures will range from 35°F to 48°F. A breeze from the N at 8 mph.Cloudy. Temperatures will range from 2°C to 9°C. A breeze from the N at 13 km/h. | |||||||
 | SaturdayNov 7 | 49°F9°C | 35°F2°C Feels 31°F-1°C | 0 in0 mm· — | 49% | Partly cloudy | NNW 5 mph8 km/h |
DayPartly cloudy. Temperatures will range from 35°F to 49°F.Partly cloudy. Temperatures will range from 2°C to 9°C. NightMostly clear. Temperatures will range from 32°F to 46°F, feeling as cold as 27°F.Mostly clear. Temperatures will range from 0°C to 8°C, feeling as cold as -3°C. | |||||||
 | SundayNov 8 | 55°F13°C | 32°F0°C Feels 27°F-3°C | 0 in0 mm· — | 8% | Clear | WSW 6 mph10 km/h |
DayClear. Temperatures will range from 33°F to 55°F, feeling as cold as 27°F.Clear. Temperatures will range from 1°C to 13°C, feeling as cold as -3°C. NightClear. Temperatures will range from 35°F to 52°F.Clear. Temperatures will range from 2°C to 11°C. | |||||||
| MondayNov 9 | 62°F17°C | 35°F2°C Feels 31°F-1°C | 0 in0 mm· — | 3% | Breeze | SW 6 mph10 km/h |
DayClear. Temperatures will range from 35°F to 62°F.Clear. Temperatures will range from 2°C to 17°C. NightA breeze from the WSW at 8 mph. Temperatures will range from 41°F to 58°F, feeling as cold as 36°F. Clear.A breeze from the WSW at 13 km/h. Temperatures will range from 5°C to 14°C, feeling as cold as 2°C. Clear. | |||||||
 | TuesdayNov 10 | 63°F17°C | 41°F5°C Feels 36°F2°C | 0 in0 mm· — | 14% | Breeze | W 6 mph10 km/h |
DayMostly clear. Temperatures will range from 41°F to 63°F.Mostly clear. Temperatures will range from 5°C to 17°C. NightMostly clear. Temperatures will range from 40°F to 59°F.Mostly clear. Temperatures will range from 4°C to 15°C. | |||||||
| WednesdayNov 11 | 62°F17°C | 40°F4°C Feels 36°F2°C | 0.01 in0.2 mm· 3% | 24% | Mostly clear | NNW 6 mph9 km/h |
DayMostly clear. Temperatures will range from 40°F to 62°F.Mostly clear. Temperatures will range from 4°C to 17°C. NightA breeze from the N at 7 mph. Temperatures will range from 40°F to 58°F. Mostly clear.A breeze from the N at 11 km/h. Temperatures will range from 4°C to 14°C. Mostly clear. | |||||||
| ThursdayNov 12 | 59°F15°C | 40°F5°C Feels 36°F2°C | 0.02 in0.4 mm· 4% | 30% | Breeze | NNW 7 mph11 km/h |
DayMostly clear. Temperatures will range from 40°F to 59°F.Mostly clear. Temperatures will range from 4°C to 15°C. NightA breeze from the NNW at 7–8 mph, and there is a marginal chance of drizzle before dawn. Temperatures will range from 39°F to 55°F, feeling as cold as 34°F. Mostly clear.A breeze from the NNW at 11–13 km/h, and there is a marginal chance of drizzle before dawn. Temperatures will range from 4°C to 13°C, feeling as cold as 1°C. Mostly clear. | |||||||
| FridayNov 13 | 59°F15°C | 39°F4°C Feels 34°F1°C | 0.02 in0.4 mm· 5% | 33% | Breeze | NW 7 mph11 km/h |
DayMostly clear. Temperatures will range from 39°F to 59°F, feeling as cold as 34°F. There is a marginal chance of drizzle around midday.Mostly clear. Temperatures will range from 4°C to 15°C, feeling as cold as 1°C. There is a marginal chance of drizzle around midday. NightA breeze from the SW at 7–8 mph, and there is a marginal chance of showers overnight. Temperatures will range from 40°F to 55°F, feeling as cold as 35°F. Mostly clear.A breeze from the SW at 11–13 km/h, and there is a marginal chance of showers overnight. Temperatures will range from 4°C to 13°C, feeling as cold as 2°C. Mostly clear. | |||||||
| SaturdayNov 14 | 60°F16°C | 40°F4°C Feels 35°F2°C | 0.04 in1.1 mm· 7% | 37% | Breeze | WSW 7 mph11 km/h |
DayA breeze from the WSW at 7 mph, and there is a marginal chance of showers around midday. Temperatures will range from 41°F to 60°F, feeling as cold as 36°F. Mostly clear.A breeze from the WSW at 11 km/h, and there is a marginal chance of showers around midday. Temperatures will range from 5°C to 16°C, feeling as cold as 2°C. Mostly clear. NightA breeze from the SW at 7–8 mph, and there is a marginal chance of showers for much of the night. Temperatures will range from 42°F to 57°F. Mostly clear.A breeze from the SW at 11–13 km/h, and there is a marginal chance of showers for much of the night. Temperatures will range from 6°C to 14°C. Mostly clear. | |||||||
| SundayNov 15 | 61°F16°C | 42°F6°C Feels 38°F3°C | 0.03 in0.7 mm· 8% | 39% | Breeze | SW 7 mph12 km/h |
DayA breeze from the SSW at 7 mph. Temperatures will range from 43°F to 61°F. Partly cloudy.A breeze from the SSW at 11 km/h. Temperatures will range from 6°C to 16°C. Partly cloudy. NightA breeze from the SSW at 8 mph, and there is a marginal chance of showers before dawn. Temperatures will range from 45°F to 58°F. Partly cloudy.A breeze from the SSW at 13 km/h, and there is a marginal chance of showers before dawn. Temperatures will range from 7°C to 14°C. Partly cloudy. | |||||||
| MondayNov 16 | 61°F16°C | 45°F7°C Feels 41°F5°C | 0.04 in1.1 mm· 8% | 45% | Breeze | S 8 mph12 km/h |
DayA breeze from the SSW at 7–8 mph, and there is a marginal chance of showers throughout the day. Temperatures will range from 45°F to 61°F. Partly cloudy.A breeze from the SSW at 11–13 km/h, and there is a marginal chance of showers throughout the day. Temperatures will range from 7°C to 16°C. Partly cloudy. NightA breeze from the SSE at 8 mph, and there is a marginal chance of showers throughout the night. Temperatures will range from 45°F to 58°F. Partly cloudy.A breeze from the SSE at 13 km/h, and there is a marginal chance of showers throughout the night. Temperatures will range from 7°C to 14°C. Partly cloudy. | |||||||
 | TuesdayNov 17 | 60°F16°C | 45°F7°C Feels 41°F5°C | 0.09 in2.4 mm· 15% | 52% | Low chance of showers | S 8 mph13 km/h |
DayThere is a low chance of showers in the morning. Temperatures will range from 46°F to 60°F. Partly cloudy, with a breeze from the S at 8 mph.There is a low chance of showers in the morning. Temperatures will range from 8°C to 16°C. Partly cloudy, with a breeze from the S at 13 km/h. NightThere is a low chance of showers before dawn. Temperatures will range from 47°F to 58°F. Partly cloudy, with a breeze from the S at 8–9 mph.There is a low chance of showers before dawn. Temperatures will range from 8°C to 14°C. Partly cloudy, with a breeze from the S at 13–14 km/h. | |||||||
| WednesdayNov 18 | 60°F15°C | 47°F8°C Feels 43°F6°C | 0.13 in3.3 mm· 17% | 61% | Low chance of showers | SSW 8 mph13 km/h |
DayThere is a low chance of showers throughout the day. Temperatures will range from 47°F to 60°F. Partly cloudy, with a breeze from the SSW at 8 mph.There is a low chance of showers throughout the day. Temperatures will range from 8°C to 16°C. Partly cloudy, with a breeze from the SSW at 13 km/h. NightThere is a low chance of showers throughout the night. Temperatures will hold near 59°F. Mostly cloudy, with a breeze from the SSW at 8 mph.There is a low chance of showers throughout the night. Temperatures will hold near 15°C. Mostly cloudy, with a breeze from the SSW at 13 km/h. | |||||||
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Coordinates: 38.5923°N, 89.9112°W·Elevation: 167m·Timezone: America/Chicago·Population: 29,002