An average of 10.00°C | 50.00°F water temperatures is reached in Portland (Gulf of Maine) over the year. Monthly averages Moses Lake Longitude: -119.278, Latitude: 47.1301 Average weather Moses Lake, - 98837. Know what's coming with AccuWeather's extended daily forecasts for Portland, ME. The measurements for the water temperature in Portland, Maine are provided by the daily satellite readings provided by the NOAA. These average ocean temperatures for Portland are calculated from several years of archived data. You are about to report this weather station for bad data. At 18.20°C | 64.76°F, the average monthly water temperature reaches its highest value in the year in August. Please select the information that is incorrect. Daily high temperatures reach or exceed 90 °F (32 °C) on only 4 days per year on average, while cold-season lows of 0 °F (−18 °C) or below are reached on 10 nights per year on average. Up to 90 days of daily highs, lows, and precipitation chances. https://www.timeanddate.com/weather/usa/portland-me/climate Station Data. Get the monthly weather forecast for Portland, ME, including daily high/low, historical averages, to help you plan ahead. Monthly: 1981-2010 normals Station Data. Weather.com brings you the most accurate monthly weather forecast for Portland, ME with average/record and high/low temperatures, precipitation and more. January is the coldest month of the year in Maine, as the daily high temperatures are regularly below freezing. Whereas in March the lowest value is measured with about 3.30°C | 37.94°F. The average high and low temperatures are listed below monthly and annually for the city, in both degrees Fahrenheit and Celsius. Weather history for places in Maine. The monthly average high temperature ranges from roughly 30 °F (−1 °C) in January to around 80 °F (27 °C) in July. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users. Monthly averages New Portland Longitude: -70.0967, Latitude: 44.8842 Average weather New Portland, ME - 4954. Monthly: 1981-2010 normals The Daily Climate Report (CLI), Preliminary Monthly Climate Data (CF6), Record Event Report (RER), Monthly Weather Summary (CLM), Regional Summary (RTP), Seasonal Climate Report (CLS), and Annual Climate Report (CLA) can be found on the Past Observed Weather page. Sign up for our email newsletter by entering your email address. Portland Temperatures: Averages by Month The numbers here tell you how hot and cold the weather usually is in Portland, Maine during each month of the year. Day high temperatures even in coastal areas like Portland average cold 31°F (-0.6°C), while the nightly lows are approximately 13°F (-10.6°C). Weather Moses Lake, - 98837 weather station for bad data Portland, ME with average/record and high/low,! 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