| NWS Forecast for: Mason County Issued by: National Weather Service Lincoln, IL Last Update: 127 PM CDT Sun Jun 7 2026 |  |
This Afternoon: Partly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Southeast winds 5 to 10 mph. Chance of rain 50 percent. Tonight: Mostly cloudy with a chance of showers and thunderstorms. Humid with lows in the upper 60s. Southeast winds 5 to 10 mph. Chance of rain 50 percent. Monday: Showers likely with a chance of thunderstorms. Humid with highs in the mid 80s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 70 percent. Monday Night: Showers likely with a chance of thunderstorms in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the upper 60s. South winds 5 to 10 mph. Chance of rain 70 percent. Tuesday: Partly sunny. A chance of showers in the morning. Humid with highs in the lower 90s. South winds 5 to 10 mph. Chance of rain 40 percent. Heat index values up to 101 in the afternoon. Tuesday Night And Wednesday: Mostly clear. Lows in the lower 70s. Highs in the mid 90s. Wednesday Night: Mostly clear in the evening, then becoming partly cloudy. A chance of showers after midnight. Lows in the lower 70s. Chance of rain 40 percent. Thursday And Thursday Night: Showers likely with a chance of thunderstorms. Highs in the lower 90s. Lows in the lower 60s. Chance of rain 60 percent. Friday And Friday Night: Mostly clear. Highs in the upper 80s. Lows in the mid 60s. Saturday: Mostly sunny. Highs in the upper 80s. | |
| Zone Forecast: Mason County | |
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