| NWS Forecast for: Lewis County Issued by: National Weather Service Buffalo, NY Last Update: 325 AM EDT Tue May 19 2026 | |
Today: Mostly cloudy early, then becoming partly sunny. A chance of showers early. A chance of showers and thunderstorms this afternoon. Warm with highs ranging from the upper 70s on the hilltops to the lower 80s across the lower elevations. Southwest winds 5 to 10 mph, increasing to 10 to 15 mph. Chance of rain 50 percent. Tonight: Showers with a chance of thunderstorms. Mild with lows in the upper 50s. Southwest winds 5 to 10 mph. Chance of rain 80 percent. Wednesday: Mostly cloudy with a chance of showers in the morning, then partly sunny with a chance of showers in the afternoon. Much cooler. Less humid with highs ranging from the lower 60s on the hilltops to the upper 60s across the lower elevations. West winds 5 to 10 mph. Chance of rain 50 percent. Wednesday Night: Partly cloudy and much cooler with lows in the upper 30s. West winds 5 to 10 mph, becoming light. Thursday: Sunny, cool with highs ranging from the mid 50s on the hilltops to the upper 50s across the lower elevations. Light winds. Thursday Night: Partly cloudy. Lows in the upper 30s. Friday: Partly sunny. Highs in the mid 60s. Friday Night: Showers likely. Lows in the mid 40s. Chance of rain 60 percent. Saturday: Showers likely. Highs around 60. Chance of rain 70 percent. Saturday Night: Showers likely. Lows in the mid 40s. Chance of rain 70 percent. Sunday: Showers likely. Highs in the lower 60s. Chance of rain 60 percent. Sunday Night: Mostly cloudy with a chance of showers. Lows in the upper 40s. Chance of rain 40 percent. Memorial Day: Mostly cloudy with a chance of showers. Highs in the upper 60s. Chance of rain 40 percent. | |
| Zone Forecast: Lewis County | |
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