| NWS Forecast for: Jefferson County Issued by: National Weather Service Buffalo, NY Last Update: 1000 AM EDT Sun May 17 2026 | |
| Rest Of Today: Mostly cloudy through early afternoon, then clearing. Patchy fog through early afternoon. Highs ranging from the upper 60s along the lake ontario shore to the mid 70s inland. Light west winds. Tonight: Mostly cloudy. A chance of showers overnight. Lows in the lower 50s. Light east winds. Chance of rain 30 percent. Monday: Becoming mostly sunny. A 30 percent chance of showers. Warmer with highs ranging from the upper 70s along the lake ontario shore to the mid 80s inland. Light winds, becoming southwest 5 to 10 mph. Monday Night: Partly cloudy with a chance of showers. Warmer with lows ranging from the lower 60s along the lake ontario shore to the mid 60s across the tug hill. Southwest winds 10 mph or less, becoming south. Chance of rain 40 percent. Tuesday: Partly sunny with a chance of showers. Warm with highs ranging from the mid 70s along the lake ontario shore to the lower 80s inland. Southwest winds 5 to 10 mph, increasing to 10 to 15 mph. Chance of rain 40 percent. Tuesday Night: Showers with a chance of thunderstorms. Lows in the upper 50s. Chance of rain 90 percent. Wednesday: Showers. Highs in the upper 60s. Chance of rain 90 percent. Wednesday Night: Partly cloudy. Lows in the lower 40s. Thursday: Mostly sunny. Highs in the upper 50s. Thursday Night: Mainly clear. Lows in the lower 40s. Friday: Mostly sunny. Highs in the mid 60s. Friday Night: Mostly cloudy. Lows in the mid 40s. Saturday: Partly sunny. Highs in the upper 60s. | |
| Zone Forecast: Jefferson County | |
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