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Weather Forecast for O'Fallon (Illinois)
Forecast Overview
| Sunday, December 22 | O'Fallon sunrise: 07:14 sunset: 16:42 |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 12:00 15:00 |  | Sunny. | 5°C | 20 km/h | 53% | 0.274% |
| 15:00 18:00 | | Clear. | 2°C | 19 km/h | 67% | 0.271% |
| 18:00 21:00 | | Clear. | 1°C | 20 km/h | 71% | 0.274% |
| 21:00 00:00 | | Clear. | 0°C | 19 km/h | 74% | 0.272% |
| Monday, December 23 | O'Fallon sunrise: 07:14 sunset: 16:42 |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | Clear. | 0°C | 19 km/h | 76% | 0.271% |
| 03:00 06:00 | | Overcast. | 1°C | 19 km/h | 78% | 0.272% |
| 06:00 09:00 | | Overcast. | 4°C | 24 km/h | 68% | 0.272% |
| 09:00 12:00 | | Overcast. | 7°C | 18 km/h | 61% | 0.269% |
| 12:00 15:00 | | Overcast. | 6°C | 16 km/h | 67% | 0.269% |
| 15:00 18:00 | | Chance of light rain. Precipitation: 0.1875 mm. | 6°C | 17 km/h | 72% | 0.27% |
| 18:00 21:00 | | Overcast. Precipitation: 0.4375 mm. | 5°C | 10 km/h | 84% | 0.272% |
| 21:00 00:00 | | Overcast. Precipitation: 0.75 mm. | 6°C | 8 km/h | 91% | 0.278% |
| Tuesday, December 24 | O'Fallon sunrise: 07:15 sunset: 16:43 |
| Time | Skies | Conditions | Temp | Wind | Humidity | Soil Moisture |
| 00:00 03:00 | | Chance of rain. Precipitation: 2.75 mm. | 5°C | 10 km/h | 95% | 0.299% |
| 03:00 06:00 | | Chance of rain. Precipitation: 3.4375 mm. | 6°C | 10 km/h | 97% | 0.315% |
| 06:00 09:00 | | Chance of rain. Precipitation: 2.1875 mm. | 6°C | 12 km/h | 97% | 0.319% |
| 09:00 12:00 | | Chance of rain. Precipitation: 2.0625 mm. | 6°C | 12 km/h | 92% | 0.317% |
| 12:00 15:00 | | Chance of rain. Precipitation: 3.5 mm. | 6°C | 15 km/h | 95% | 0.327% |
| 15:00 18:00 | | Chance of rain. Precipitation: 1.625 mm. | 6°C | 18 km/h | 94% | 0.325% |
| 18:00 21:00 | | Chance of rain. Precipitation: 1.6875 mm. | 7°C | 14 km/h | 92% | 0.325% |
| 21:00 00:00 | | Chance of light rain. Precipitation: 0.9375 mm. | 7°C | 16 km/h | 94% | 0.322% |
| Wednesday, December 25 | O'Fallon sunrise: 07:15 sunset: 16:44 |
 | Low around 7°C, high around 9°C. Chance of rain all night and all morning (until 12 pm), and then again at night (after 9 pm). Estimated precipitation: 14.75 mm. Overcast skies. |
| Thursday, December 26 | O'Fallon sunrise: 07:15 sunset: 16:44 |
 | Low around 9°C, high around 12°C. Chance of light rain early in the afternoon (between 12 pm and 3 pm). Estimated precipitation: 0.25 mm. Overcast skies. |
| Friday, December 27 | O'Fallon sunrise: 07:16 sunset: 16:45 |
 | Low around 12°C, high around 14°C. Chance of light rain early in the morning (before 3 am and from 6 am to 9 am). Estimated precipitation: 1.1875 mm. Overcast skies. |
| Saturday, December 28 | O'Fallon sunrise: 07:16 sunset: 16:46 |
| Low around 12°C, high around 14°C. Chance of rain from morning till evening (between 6 am and 6 pm). Estimated precipitation: 9.5 mm. Overcast skies. |
| Sunday, December 29 | O'Fallon sunrise: 07:16 sunset: 16:46 |
 | Low around 7°C, high around 13°C. Chance of rain between midnight and 3 am. Estimated precipitation: 4.0625 mm. More clouds than sun. |
O'Fallon (latitude 38°35'N, longitude 089°55'W)
O'Fallon - other nearby places: Shiloh (3.7 km away), Fairview Heights (7.5 km away), Swansea (8 km away), Lebanon (8.9 km away), Belleville (9.1 km away), Caseyville (12 km away), Collinsville (13 km away), Summerfield (15 km away), Maryville (15 km away), Washington Park (16 km away), Mascoutah (16 km away), Fairmont City (16 km away), Freeburg (17 km away), Troy (17 km away), Alorton (17 km away).
View weather forecasts for other places in Illinois
Forecasts for Other Places:
Oak City-3°C ... 6°C
Sunny skies.
O'Kean1°C ... 10°C
Considerable cloudiness.
O'Fallon1°C ... 7°C
Chance of light rain early in the afternoon (between 12 pm and 3 pm) and at night (after 9 pm). Estimated precipitation: 1.0625 mm.
Oak City2°C ... 10°C
Mostly sunny, with a few passing clouds.
Oak4°C ... 11°C
Overcast skies.
O'Hara Township-7°C ... 2°C
Chance of light snow late at night (after 10 pm). Estimated precipitation: 0.8125 mm.
Oak Bluffs-6°C ... 3°C
Mostly cloudy skies.
Oak Brook-1°C ... 3°C
Mostly cloudy skies. Estimated precipitation: 0.375 mm.
O'Neill1°C ... 9°C
Times of sun and clouds.
Oacoma-0°C ... 5°C
A few passing clouds.