Cambridge is a city in Washington County, Idaho, United States. The population was 328 at the 2010 census, down from 360 in 2000. It is the second largest city in the county, behind the significantly larger Weiser, the county seat. Geography Cambridge is located at (44.571535, −116.678013), at an elevation of above sea level. According to the United States Census Bureau, the city has a total area of , of which, is land and is water. Climate Cambridge has a hot-summer mediterranean continental climate (Köppen climate classification Dsa), with cold, moist winters, gradual springs, hot and dry summers, and brief autumns. July is the hottest month, with a daily average of ; highs reach on 10.7 days in a typical year and on 57 days. Yet because of the aridity, summer nights typically cool to below . January is the coldest month, with a daily average of , and lows falling to or below on 9.6 nights per year. Snowfall averages per season. Precipitation is usually infrequent and light, especially so during the summer months. Extremes have ranged from on December 13, 1919 to , recorded July 29, 1934. Demographics 2010 census As of the census of 2010, there were 328 people, 151 households, and 100 families residing in the city. The population density was . There were 178 housing units at an average density of . The racial makeup of the city was 98.2% White, 0.6% Native American, and 1.2% from two or more races. Hispanic or Latino of any race were 0.3% of the population. There were 151 households, of which 25.2% had children under the age of 18 living with them, 52.3% were married couples living together, 8.6% had a female householder with no husband present, 5.3% had a male householder with no wife present, and 33.8% were non-families. 33.1% of all households were made up of individuals, and 14.5% had someone living alone who was 65 years of age or older. The average household size was 2.17 and the average family size was 2.68. The median age in the city was 47.1 years. 21.6% of residents were under the age of 18; 5.9% were between the ages of 18 and 24; 20.2% were from 25 to 44; 29.5% were from 45 to 64; and 22.9% were 65 years of age or older. The gender makeup of the city was 50.0% male and 50.0% female. 2000 census