| NWS Forecast for: Jefferson County Issued by: National Weather Service Buffalo, NY Last Update: 1000 PM EDT Sat Jul 18 2026 |  |
Overnight: Mostly cloudy with a chance of showers and thunderstorms late this evening, then partly cloudy. Patchy smoke. Lows ranging from the mid 50s across the tug hill to the upper 50s along the lake ontario shore. Northwest winds 10 to 15 mph, diminishing to 5 to 10 mph. Chance of rain 50 percent. Sunday: Mostly sunny. Patchy smoke in the morning. Highs ranging from the upper 60s on the tug hill to the mid 70s across the lower elevations. Northwest winds 5 to 10 mph. Sunday Night: Mainly clear. Lows ranging from the mid 50s across the tug hill to around 60 along the lake ontario shore. West winds 5 to 10 mph, becoming light. Monday: Sunny. Highs ranging from the lower 70s on the tug hill to the upper 70s across the lower elevations. Southwest winds 10 mph or less. Monday Night: Mostly cloudy. Lows ranging from the lower 60s across the tug hill to the mid 60s along the lake ontario shore. Light winds, becoming south 5 to 10 mph. Tuesday: Showers with a chance of thunderstorms. Highs in the lower 80s. Chance of rain 80 percent. Tuesday Night: Showers with a chance of thunderstorms. Lows in the lower 60s. Chance of rain near 100 percent. Wednesday: Showers likely. Highs in the lower 70s. Chance of rain 70 percent. Wednesday Night: Mostly cloudy with a 50 percent chance of showers. Lows in the mid 50s. Thursday: Mostly sunny. Highs in the lower 70s. Thursday Night: Mainly clear. Lows in the mid 50s. Friday: Sunny. Highs in the upper 70s. Friday Night: Partly cloudy. Lows in the upper 50s. Saturday: Mostly sunny. Highs in the upper 70s. | |
| Zone Forecast: Jefferson County | |
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