![]() ![]() NAO modes are long-term trends that can last for decades, and the present NAO mode has been mostly positive since the late 1970s. When the pressure difference between the Icelandic Low and the Bermuda High is low, the NAO is in negative mode, which often brings cold temperatures and increased storm activity to Maine. When the pressure difference between these two systems is high, the NAO is in positive mode, resulting in relatively milder temperatures and decreased storm activity in Maine. The interactions between these two systems have the power to alter storm tracks across the North Atlantic. The NAO results from the interaction between a semi-permanent low pressure system over Iceland (the Icelandic Low) and a semi-permanent high pressure system over Bermuda (the Bermuda High). Long-term weather trends in Acadia National Park are also influenced by a weather system known as the North Atlantic Oscillation (NAO). In January, February and March, when inland Maine often suffers sub-zero temperatures, the ocean’s relative warmth boosts temperatures along the coast. In June, July and August, when inland Maine is hot and humid, the Gulf of Maine’s cold water keeps Acadia’s temperatures mild. Temperatures in Maine can vary dramatically throughout the year, but temperatures along the coast are moderated by the ocean. Any report over 36 hours is pretty much useless.Īcadia weather – even when it's bad, it's good #Acadia #AcadiaNationalPark #Maine #DowneastĪ post shared by James Kaiser on at 1:11pm PDT In my highly non-scientific study of local forecasts, I’ve found that 24-hour reports are right about 70% of the time, 48-hour reports are right about 50% of the time, and 36-hour reports are right about 30% of the time. Most are based on regional forecasts, and there’s tremendous variability within the region. ![]() But in my experience, even their forecasts are only partially reliable. My favorite source of forecasts and weather info is the National Weather Service. See also: Best Times to Visit Acadia National Park Acadia Weather Forecasts I don’t know who makes that, but I think it must be some raw apprentices in the weather-clerk’s factory.” As Mark Twain once wrote, “I reverently believe that the Maker who made us all makes everything in New England but the weather. Weather patterns in Maine - and all of New England for that matter - are more variable and extreme than almost any other place the United States. What started out as a sunny day in Bar Harbor can end in rain, fog or (in rare cases) hail. Although summers on Mount Desert Island are generally sunny and divine, conditions can change in an instant. Otherwise, mostly cloudy, with a high near 72.Weather in Acadia National Park is - in a word - unpredictable. Otherwise, increasing clouds, with a low around 52. Otherwise, mostly cloudy, with a low around 58. Southwest wind between 6 and 10 mph, with gusts as high as 18 mph. Otherwise, mostly cloudy, with a low around 58. Otherwise, mostly cloudy, with a high near 71. Forecast average temperatures may vary day-to-day. Otherwise, mostly cloudy, with a low around 56. Use this weather chart as a guide to view the average air and ocean temperatures in Bar Harbor, ME. Otherwise, mostly cloudy, with a high near 71.įriday Night: A chance of showers. Chance of precipitation is 60%.įriday: A 50 percent chance of showers before 5pm. Otherwise, mostly cloudy, with a low around 55. Patchy fog between 9pm and 10pm, then Patchy fog after 11pm. Thursday Night: Showers likely, mainly after 9pm. Thursday: Showers likely, mainly before 1pm. ![]() South wind between 10 and 13 mph, with gusts as high as 23 mph. South wind around 14 mph, with gusts as high as 25 mph. Patchy fog before 11am, then Patchy fog between 1pm and 2pm. South wind between 11 and 13 mph, with gusts as high as 23 mph. Some of the storms could produce heavy rainfall. Tonight: Showers and possibly a thunderstorm. South southeast wind between 10 and 13 mph, with gusts as high as 22 mph. Today: Showers and possibly a thunderstorm. Forecast Valid: 6am EDT Jun 27, 2023-6pm EDT Jul 3, 2023 ![]()
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