The magnetic compass was first invented as a device for divination as early as the Chinese Han Dynasty (since about 206 BC), and later adopted for navigation by the Song Dynasty Chinese during the 11th century. The first usage of a compass recorded in Western Europe and Persia occurred around the early 13th century.
The highest monthly average temperature in Athol for July is 71 degrees. The lowest monthly average temperature in Athol for December is 26 degrees. The most monthly precipitation in Athol occurs in January with 1.7 inches. The air quality index in Athol is 21% better than the national average. The pollution index in Athol is 91% better than the national average.
Such high daytime readings can be followed by nighttime temperatures of 60 F or lower. The average daily temperature range is 20 -30 F, with more variation observed in the southern parts of the state than the north. Winter temperatures vary more than their summer counterparts from one place to the next. The daily temperature range of about 20 F is much less than the summer range.