


NWS Forecast for: Gillespie IL Issued by: National Weather Service Saint Louis, MO Last Update: 12:21 pm CDT Jul 13, 2025 | |
This Afternoon: Showers and thunderstorms likely before 4pm, then showers likely and possibly a thunderstorm after 4pm. Cloudy, with a high near 82. East wind around 6 mph. Chance of precipitation is 70%. Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 67. Light and variable wind. Monday: Areas of fog before 8am. Otherwise, partly sunny, with a high near 86. Calm wind becoming southeast around 5 mph. Monday Night: Partly cloudy, with a low around 69. Southeast wind around 5 mph becoming calm in the evening. Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 88. Calm wind becoming south 5 to 7 mph in the morning. Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 71. Wednesday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 71. Thursday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 87. Thursday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 67. Friday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84. Friday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. Saturday: A 20 percent chance of showers. Mostly sunny, with a high near 88. | |
Gillespie IL 39.12°N 89.81°W (Elev. 653 ft) | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |