Historical weather data, all-time temperature records, and monthly climate averages for Columbia, IL. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Columbia runs mild but unpredictable — the average high of 62° can swing dramatically, as proven by the 84° scorcher in 2023 and a teeth-chattering 28° low back in 2002. With only a 29% chance of rain and zero snow risk, it's a decent day to be outside, just dress in layers.
Columbia doesn't mess around at the extremes — it's hit 107° in the dead of summer (June 2012) and plunged to -14° in January 2014, a swing of 121 degrees. A single storm in July 2022 dumped 7.23 inches of rain in one day, a reminder that summer here can get serious fast.
Columbia's warmest stretch peaks mid-July with average highs of 91°, while mid-January bottoms out around 39° — a 52-degree seasonal swing that defines life in the St. Louis metro. If you're trying to avoid the heat and humidity, spring (March–April) and fall (October) offer the most comfortable windows, though late June through early July is the wettest period of the year.