Weather forecast for: Mason IL
Last Update: 9:46 pm CST Mar 2, 2026
Overnight: Rain, mainly after 4am. Patchy fog. Low around 36. Light east wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday: Rain and thunderstorms before 3pm, then rain and possibly a thunderstorm, mainly after 3pm. High near 57. Calm wind becoming southeast around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night: Rain and possibly a thunderstorm. Patchy fog. Low around 48. Light and variable wind becoming east northeast around 6 mph in the evening. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday: Rain and possibly a thunderstorm before 9am, then showers and possibly a thunderstorm after 9am. Patchy fog before 7am. High near 65. East wind 5 to 7 mph becoming south southwest in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night: Showers and possibly a thunderstorm. Low around 56. South wind 6 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday: Showers, with thunderstorms also possible after noon. High near 68. Southwest wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 54. Southwest wind around 6 mph becoming south southeast after midnight.
Friday: A 50 percent chance of showers. Partly sunny, with a high near 76.
Friday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Saturday: Showers, mainly before noon. High near 68. Chance of precipitation is 80%.
Saturday Night: A chance of showers. Mostly cloudy, with a low around 48.
Sunday: Mostly cloudy, with a high near 63.
Sunday Night: A chance of showers. Mostly cloudy, with a low around 49.
Monday: A chance of showers. Mostly sunny, with a high near 67.
WeatherWorld.com
