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Northwest Territories

Northwest Territories Weather

The climate of the Northwest Territories is harsh and severe.

Winters are long, bitterly cold, and marked by lengthy periods of darkness. Summers are short, generally cool to warm, and accompanied by long daylight hours.

Conditions are least severe in the Mackenzie Valley, where average temperatures vary from -10 F to -25 F (-23 C to -32 C) in January and reach 60 F (16 C) in July. Average temperatures elsewhere are considerably lower.

Precipitation, most of which is snow, is light, usually about 10 inches (250 mm) a year.

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Seasonal Temperature Averages:

High / Low Temperatures ( Fahrenheit )

(Jan) 24/-27 (Feb) 0/-28 (Mar) 10/-35 (Apr) 30/-14

(May) 37/8 (Jun) 39/28 (Jul) 48/29 (Aug) 52/34

(Sep) 50/24 (Oct) 30/12 (Nov) 12/-7 (Dec) 16/-19


High / Low Temperatures ( Fahrenheit )

(Jan) 24/-42 (Feb) 6/-34 (Mar) 24/-27 (Apr) 42/2

(May) 46/20 (Jun) 68/38 (Jul) 68/48 (Aug) 67/52

(Sep) 63/37 (Oct) 40/21 (Nov) 28/-8 (Dec) 24/-36

About the Author

John Moen is a cartographer who along with his wife are the orignal founders of worldatlas.com. He and his wife, Chris Woolwine-Moen, produced thousands of award-winning maps that are used all over the world and content that aids students, teachers, travelers and parents with their geography and map questions. Today, it's one of the most popular educational sites on the web.

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This page was last updated on July 14, 2016.