| NWS Forecast for: Jefferson County Issued by: National Weather Service Buffalo, NY Last Update: 1000 PM EDT Sun May 31 2026 |  |
| Overnight: Becoming mainly clear with some patchy fog developing late. Lows ranging from the mid 40s across the tug hill to the upper 40s along the lake ontario shore. Light north winds. Monday: Some patchy fog in the morning, otherwise sunny. Highs ranging from the mid 60s on the tug hill to the lower 70s across the lower elevations. Northeast winds 10 mph or less. Monday Night: Mainly clear. Lows ranging from the upper 40s across the tug hill to the lower 50s along the lake ontario shore. Light winds. Tuesday: Mostly sunny. Highs ranging from the upper 60s on the tug hill to the mid 70s across the lower elevations. Northwest winds 10 mph or less. Tuesday Night: Partly cloudy. Lows ranging from the upper 40s across the tug hill to the lower 50s along the lake ontario shore. Light winds. Wednesday: Sunny. Highs in the mid 70s. Wednesday Night: Mainly clear. Lows in the lower 50s. Thursday: Sunny. Highs in the mid 70s. Thursday Night: Partly cloudy. Lows in the mid 50s. Friday: Partly sunny. Highs in the upper 70s. Friday Night: Mostly cloudy with a 30 percent chance of showers. Lows in the upper 50s. Saturday: Partly sunny with a 30 percent chance of showers. Highs in the upper 70s. Saturday Night: Mostly cloudy with a 40 percent chance of showers. Lows in the upper 50s. Sunday: Partly sunny with a chance of showers. Highs in the upper 70s. Chance of rain 40 percent. | |
| Zone Forecast: Jefferson County | |
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