| NWS Forecast for: Jefferson County Issued by: National Weather Service Buffalo, NY Last Update: 1000 PM EDT Mon Jun 15 2026 |  |
| Overnight: Mainly clear late this evening, then becoming partly cloudy. Lows ranging from the upper 40s across the tug hill to the mid 50s along the lake ontario shore. Light southwest winds. Tuesday: Sunny and not as cool with highs ranging from the upper 60s on the tug hill to the lower 70s across the lower elevations. South winds 10 mph or less, becoming southwest. Tuesday Night: Mainly clear in the evening, then becoming partly cloudy. Lows ranging from the mid 50s across the tug hill to the upper 50s along the lake ontario shore. Light winds, becoming south 5 to 10 mph. Wednesday: Showers likely in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs ranging from around 70 on the tug hill to the mid 70s across the lower elevations. South winds 5 to 10 mph, becoming southwest. Chance of rain 70 percent. Wednesday Night: Partly to mostly cloudy. Showers likely. Breezy with lows ranging from the mid 50s on the tug hill to the upper 50s across the lower elevations. Light winds, becoming southeast 10 to 15 mph with gusts up to 30 mph. Chance of rain 70 percent. Thursday: Showers with a chance of thunderstorms. Highs in the upper 70s. Chance of rain near 100 percent. Thursday Night: Mostly cloudy with a 50 percent chance of showers and thunderstorms. Lows in the mid 50s. Juneteenth: Partly sunny. Highs around 70. Friday Night: Partly cloudy with a chance of showers. Lows in the lower 50s. Chance of rain 30 percent. Saturday: Showers likely. Highs in the upper 60s. Chance of rain 70 percent. Saturday Night: Showers likely. Lows in the lower 50s. Chance of rain 70 percent. Sunday: Partly sunny with a 40 percent chance of showers. Highs around 70. Sunday Night: Partly cloudy with a 40 percent chance of showers. Lows in the lower 50s. Monday: Partly sunny with a 40 percent chance of showers. Highs in the lower 70s. | |
| Zone Forecast: Jefferson County | |
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