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2026-08-17 13:57 UTC → 2026-08-22 10:09 UTC ·
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Humid heat Unsettled summer weather and scattered storms across flooding risks in New England and Mid-A Jersey
A high‑pressure ridge kept New England sunny and warm over the weekend of July 23‑24, but a humid air mass moving eastward raised the threat of thunderstorms beginning Monday. Residents enjoyed a brief spell of low‑humidity, mid‑70s to mid‑80s °F weather before daytime heating revived the risk of afternoon storms, with lightning and brief heavy rain possible. The same moisture plume continued to affect the broader East Coast, bringing spotty showers and a marginal to slight severe‑weather risk in New Jersey, and raising flood concerns where rain could exceed an inch. By late July, the humid pattern persisted. In Milton, Ontario, Environment Canada predicted a 40% chance of showers and thunderstorms through the weekend, with high humidity and a very high UV index. The Boston area expected mainly dry conditions despite oppressive humidity, with the next significant rain chance arriving on Monday. In early August, a warm front pushed humidity sharply higher in New Jersey and Rochester, NY, pushing heat‑index values toward 100 °F and keeping daily highs in the 90s. In Rochester, dew points climbed into the 60s–70s °F with showers and brief downpours forecast through Friday. By mid-August, New Jersey transitioned to more pleasant, seasonable weather with temperatures in the 80s and manageable humidity. However, a weather shift was anticipated for the following Sunday, as a storm system threatened to bring 1 to 2 inches of rainfall and thunderstorms. A Coastal Flood Advisory was issued for the Delaware Bay, with potential tidal flooding in Salem, Cumberland, and Cape May counties, while a low risk of rip currents remained for the Jersey Shore. Following these shifts, this period, New Jersey experienced unsettled summer weather characterized by periods of rain and thunderstorms. After a wet weekend, Monday saw rain with the potential for localized ponding or flooding in areas where the ground was already saturated. While subsequent days offered sunny and warm conditions with highs in the 80s, a frontal boundary was expected to stall over the region later in the week, potentially bringing renewed rain chances from Thursday through Saturday.