My attention is squarely on Tuesday right now — the NWS Buffalo office is flagging heat indices over 100° as possible, and the latest model guidance is actually trending a touch warmer, not cooler. That’s worth paying attention to as we head into the workweek.
For tonight, conditions couldn’t be more benign. Skies stay clear, and temperatures drop into the upper 50s by morning — Geneva and Canandaigua near 59°, with Corning slipping to around 57°. No frost risk, no precipitation, no alerts. Light northeast winds fade overnight. It’s a genuinely comfortable July night.
Tomorrow is the warmup’s opening act. Highs climb to near 89° in Geneva under mainly clear skies, with humidity still manageable — heat indices stay in the upper 80s to low 90s. That changes fast Tuesday, when a large dome of high pressure expands east across the Great Lakes, pushing 850mb temperatures into the 99th percentile for mid-July. Highs reach the low-to-mid 90s, and rising humidity tips heat indices into the mid-90s to low-100s range. Wednesday stays hot near 88° before a gradual easing Thursday and Friday, with a slight drizzle chance arriving by the weekend.
Weather Center forecast for the Finger Lakes region. Sourced from NWS, Open-Meteo, NWS Area Forecast Discussion, and USGS stream-flow data. Updated 6 AM, noon, and 6 PM ET.