Historical weather data, all-time temperature records, and monthly climate averages for Edwardsville, IL. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Edwardsville lands right in the heart of spring's unpredictability — the date's average high of 60° sounds pleasant, but the record books span from a frigid 23° in 1987 to a remarkable 89° back in 1946. There's about a 1-in-3 chance of rain today, so keep a jacket handy.
Edwardsville's weather has real teeth at both ends of the thermometer — 134 years of data put the all-time high at a scorching 116° in July 1946 and the low at a brutal -16° in January 1982. A single April day in 1996 dropped 7.7 inches of rain, which remains the wettest on record.
Summer is the main event here, with highs climbing to 88-89° in July and staying warm through August, while January and February sit in the upper 30s to low 40s. Late April is the wettest stretch of the year, averaging over an inch of rain in a single week, so plan spring visits with an umbrella in mind.