Historical weather data, all-time temperature records, and monthly climate averages for Champaign, IL. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Champaign is a coin-flip kind of day — temperatures can swing wildly, from a bitter 19° back in 1903 to a shirtsleeve 81° in 1929. On average, expect a cool 57° high and 37° low, with a 42% chance of rain. Snow is nearly off the table, but nearly isn't zero.
Champaign has seen some serious weather extremes over its 124 years of records. Summer can be punishing — the mercury hit 109° in July 1954 — while winter can be brutal, bottoming out at -25° in January 1994. That's a 134-degree swing between the all-time high and low.
Champaign runs warm from June through September, peaking in mid-July with average highs of 86° — the same week that's also the wettest of the year. Winters are cold and grey, with January highs barely cracking the mid-30s. If you're planning a visit, May and September offer the most comfortable conditions before the heat or cold sets in.