| NWS Forecast for: Mason County Issued by: National Weather Service Grand Rapids, MI Last Update: 222 AM EDT Fri Sep 18 2026 | |
| Early This Morning: Partly cloudy. Lows in the upper 40s. Light winds. Today: Mostly sunny in the morning then becoming mostly cloudy. Highs around 70. Northeast winds 5 to 10 mph. Tonight: A chance of rain showers in the evening, then rain showers likely after midnight. Lows in the mid 40s. Northeast winds around 10 mph becoming east with gusts to around 20 mph after midnight. Chance of rain 70 percent. Saturday: Rain showers likely in the morning, then a chance of rain showers in the afternoon. Highs in the mid 60s. East winds 5 to 15 mph. Chance of rain 70 percent. Saturday Night: Mostly cloudy with a 40 percent chance of rain showers. Lows in the upper 40s. Northeast winds around 10 mph. Gusts up to 20 mph in the evening. Sunday: Mostly cloudy with a 30 percent chance of rain showers. Highs around 70. Northeast winds 5 to 15 mph with gusts to around 25 mph. Sunday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 40s. Monday: Mostly cloudy. Highs in the mid 60s. Monday Night: Mostly cloudy. Lows in the lower 40s. Tuesday: Partly sunny. Highs in the mid 60s. Tuesday Night: Partly cloudy with a 20 percent chance of rain showers. Lows in the lower 40s. Wednesday: Partly sunny. Highs in the upper 60s. Wednesday Night: Partly cloudy. Lows in the mid 40s. Thursday: Partly sunny. Highs in the upper 60s. | |
| Zone Forecast: Mason County | |
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