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Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Old Lyme.
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State: CTTotal alerts: 1Updated: May 20, 2026 6:41am EDT
Heat Advisory
Area Hartford; Tolland; Windham; Eastern Franklin; Northern Worcester; Central Middlesex County; Western Essex; Eastern Essex; Eastern Hampshire; Eastern Hampden; Southern Worcester; Western Norfolk; Southeast Middlesex; Suffolk; Eastern Norfolk; Northern Bristol; Western Plymouth; Eastern Plymouth; Northwest Middlesex County; Northwest Providence; Southeast Providence; Western Kent; Eastern Kent
Heat Advisory issued May 20 at 1:29AM EDT until May 20 at 8:00PM EDT by NWS Boston/Norton MA
* WHAT...Heat index values up to 96.
* WHERE...Much of Southern New England, except for the eastern
slopes of the Berkshires, the Rhode Island and Massachusetts South
Coast, Cape Cod and the Islands.
* WHEN...Until 8 PM EDT this evening.
* IMPACTS...Hot temperatures and moderate humidity may cause heat
illnesses.
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Old Lyme weather report and traffic updates by locals
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