O'Fallon Weather in January

Thinking of visiting O'Fallon in January? Expect low temperatures reaching 5°C (41°F) during the day, dropping to -5°C (23°F) at night, with the driest conditions of the year.

Rainfall in O'Fallon in January

With the lowest rainfall figures of the year, conditions are ideal for exploring the outdoors, even if the temperatures require a jacket. Past climate data indicates that roughly 7 days will see snow/rain, totalling around 56 mm (2.2 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in O'Fallon in January

Daytime temperatures in O'Fallon reach 5°C (41°F) in January, dropping to -5°C (23°F) at night. During January, the winter season is in full swing. Even daytime conditions remain cold, making layers, a warm coat, and winter accessories a good idea. Nights are well below freezing at -5°C (23°F). An extra blanket is a good idea if you feel the cold, especially in older or less well-heated accommodation. It's often the coldest month of the year, a perfect time to cozy up indoors. Make sure to bring along suitable winter clothing.

Sunshine in O'Fallon in January

The city usually sees around 163 hours of sunlight, indicating a moderately sunny period.

If you're looking for dry conditions and comfortable temperatures, January may not be the ideal month to visit O'Fallon. Our weather planner can help you explore destinations with more pleasant weather conditions.