Historical weather data, all-time temperature records, and monthly climate averages for Lincoln, IL. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Lincoln lands right in the swing of spring — expect a high near 59° and a low around 37°, based on 119 years of records. The date has seen wild swings, from a balmy 86° back in 1929 to a brutal 15° low in 1926. There's about a 1-in-3 chance of rain today, but snow is nearly off the table at just 1%.
Lincoln's weather has real range — the thermometer has climbed as high as 113° (July 15, 1936) and plunged as low as -34° (January 15, 1927), a spread of 147 degrees. Single-day rainfall peaked at 5.22 inches on May 12, 1914, the same year a February storm dropped 13 inches of snow in one shot.
Lincoln's summer is firmly warm, with late July averaging highs of 88° and the mercury staying in the 80s from June through August. Winter is cold and gray — mid-January averages just 34° for a high, and January through February rarely break 40°. If rain is your concern, plan around May: the week of May 7–13 is the wettest of the year, averaging over an inch of precipitation.