This is the wind, wave and weather statistics for Umatilla in Oregon, United States. It is 161% greater than the overall U.S. average. Based on weather reports collected during 1985â2015. Get the monthly weather forecast for Hermiston, OR, including daily high/low, historical averages, to help you plan ahead. Temperature In Umatilla, the average high-temperature drops, from a tropical 90.5°F (32.5°C) in August, to a warm 80.8°F (27.1°C).The average low-temperature, in September, is 48.9°F (9.4°C). Find out how often it rains, snows, and the gets cold or hot in Umatilla. Average Weather in Umatilla Oregon, United States. Umatilla County has an average temperature of 52.6F, which ranked #8 in Oregon. Northeast Umatilla, Oregon detailed profile. The first month of the autumn, September, is still a warm month in Umatilla, Oregon, with average temperature fluctuating between 80.8°F (27.1°C) and 48.9°F (9.4°C). Monthly averages Pendleton Longitude: -118.841, Latitude: 45.6951 Average weather Pendleton, OR - 97801. Complete climate information for Umatilla, Oregon. Statistics The wind statistics are based on real observations from the weather station at Umatilla. Earthquake activity: Northeast Umatilla-area historical earthquake activity is below Oregon state average. Also the historical Umatilla County weather info such as snow/precipitations data as well as heating and cooling cost index. In Umatilla, the summers are hot and mostly clear, the winters are very cold and partly cloudy, and it is dry year round. Station Data. It is 150% greater than the overall U.S. average. Climate data and weather averages in Hermiston. Monthly: 1981-2010 normals History: 2007-2019 Over the course of the year, the temperature typically varies from 27°F to 93°F and is rarely below 13°F or above 102°F. Windfinder specializes in wind, waves, tides and weather reports & forecasts for wind related sports like kitesurfing, windsurfing, surfing, sailing or paragliding. Umatilla, Oregon detailed profile. Umatilla, Oregon Climate - 97882 Weather, Average Rainfall, and Temperatures Earthquake activity: Umatilla-area historical earthquake activity is below Oregon state average. Annual Weather Averages in Hermiston. On November 15, the temperature in Umatilla typically ranges from 37°F to 48°F and is rarely below 23°F or above 59°F. Monthly average temperatures, rainfall, snow days & record high and low temperatures msn back to msn home weather records and averages powered by Microsoft News Based on real observations from the weather station at Umatilla observations from the weather station at Umatilla ranges from to. 161 % greater than the overall U.S. average County weather info such as snow/precipitations data as well as and... 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