Manitoba's climate ranges from subartic in the north to extreme continental in the south. Winters are harsh and summers are moderately warm. The average annual temperature recorded in Winnepeg in January, was -18 degrees centigrade (about 0 F). In July, it was 21 degrees Celsius (about 89 F). The lowest temperature recorded was -52.8 degrees Celsius (-63 F) in 1899, at Norway House in the northeast. The highest recorded temperature was 44.4 degrees Celsius (about 111 F) in 1936, at Saint Albans. The average annual precipitation is 460 mm (about 18"). Southern Manitoba gets frequent thunderstorms and occasional tornadoes from warm moist airmasses from the southern United States. Winter snowfall is 1270mm (about 50"). Most of the precipitation occurs from May to September.