| NWS Forecast for: Waterloo IL Issued by: National Weather Service Saint Louis, MO Last Update: 8:26 am CST Nov 16, 2025 |  |
| Today: Sunny, with a high near 58. North wind 5 to 7 mph becoming calm in the afternoon. Tonight: Mostly clear, with a low around 36. Calm wind. Monday: Increasing clouds, with a high near 59. Light east wind becoming southeast 5 to 10 mph in the morning. Monday Night: A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and midnight, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 49. Southeast wind around 9 mph. Chance of precipitation is 60%. Tuesday: A 30 percent chance of showers before noon. Partly sunny, with a high near 72. South wind 7 to 9 mph becoming west in the afternoon. Tuesday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 51. Wednesday: A 30 percent chance of rain, mainly after noon. Partly sunny, with a high near 67. Wednesday Night: Rain likely, mainly after midnight. Mostly cloudy, with a low around 53. Chance of precipitation is 60%. Thursday: Rain and possibly a thunderstorm. High near 66. Chance of precipitation is 80%. Thursday Night: Rain likely, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 55. Chance of precipitation is 70%. Friday: A 50 percent chance of rain. Partly sunny, with a high near 66. Friday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 42. Saturday: A 20 percent chance of rain. Partly sunny, with a high near 54. | |
| Waterloo IL 38.33°N 90.16°W (Elev. 600 ft) | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |
