Geography Helena, Montana



2001 astronaut photography of helena montana taken international space station (iss)



the iconic sleeping giant mountain formation located north of helena


helena located @ 46°35′45″n 112°1′37″w / 46.59583°n 112.02694°w / 46.59583; -112.02694 (46.595805, −112.027031), @ altitude of 4,058 feet (1,237 m).


surrounding features include continental divide, mount helena city park, spring meadow lake state park, lake helena, helena national forest, big belt mountains, gates of mountains wilderness, sleeping giant wilderness study area, bob marshall wilderness, scapegoat wilderness, missouri river, canyon ferry lake, holter lake, hauser lake, , elkhorn mountains.


according united states census bureau, city has total area of 16.39 square miles (42.45 km), of 16.35 square miles (42.35 km) land , 0.04 square miles (0.10 km) water.


climate

helena has semi-arid climate (köppen bsk), long, cold , moderately snowy winters, hot , dry summers, , short springs , autumns in between. monthly daily average temperature ranges 21.8 °f (−5.7 °c) in december 70.0 °f (21.1 °c) in july, average diurnal temperature variation exceeding 30 °f (17 °c) in summer, due aridity , elevation. snowfall has been observed in every month of year, absent may september, , accumulates in light amounts. winters have periods of moderation, partly due warming influence chinooks. precipitation falls in spring , sparse, averaging 11.3 inches (287 mm) annually.


subzero (below −18 °c) cold observed 23 nights per year, extended, 90 °f (32 °c) heat, occurs on 19 days annually. extremes range −42 °f (−41 °c) 105 °f (41 °c), occurring february 2, 1996 , july 12, 2002, respectively.









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