Average Annual Precipitation for Northwest Territories

The tables below give yearly averages for rainfall plus snowfall at places in the Northwest Territories. Each site has a total for how many days of wet weather it usually gets a year and for the normal amount of precipitation.

Separate tables group places in the Southern and Northern parts of the Northwest Territories.

The calculation of days only includes the days when precipitation totalled at least 0.2 millimetres (0.008 inches). The annual amount of precipitation is an average of weather data collected during 1981 to 2010.

Southern Northwest Territories

Several of the communities in the southern portion of the Northwest Territories are on the shores of Great Slave Lake. The capital city of Yellowknife is on the north shore, and Hay River on the south shore.

Fort Simpson is a village at the confluence of the Liard and Mackenzie Rivers. Upstream on the Liard, is the hamlet of Fort Liard, located not far from the borders with the Yukon and British Columbia.

Fort Smith is along the Slave River, near the Alberta border. Located just east of Wood Buffalo National Park, the town serves as a gateway for visiting the Park.

Average yearly precipitation
Days Place Inches Milli­metres
104 Fort Liard 17.8 452
125 Fort Simpson 15.3 388
128 Fort Smith 13.9 354
123 Hay River 13.2 336
119 Yellowknife 11.4 289

Northern Northwest Territories

This region of the Northwest Territories includes the mainland and islands of the Canadian western Arctic. All the places here, but Normal Wells, lie north of the Arctic Circle.

The communities of Normal Wells and Inuvik sit alongside the Mackenzie River. Tuktoyaktuk, Paulatuk and Cape Parry are on the Arctic coast. Sachs Harbour is on the southwest corner of Banks Island, while Ulukhaktok is on the west coast of Victoria Island. Mould Bay is Environment Canada's northermost weather station in the Northwest Territories, located at 76° N latitude on Prince Patrick Island.

Annual averages for rainfall plus snowfall
Days Place Inches Milli­metres
100 Cape Parry 6.3 161
130 Inuvik 9.5 241
104 Mould Bay 4.6 117
129 Norman Wells 11.6 294
112 Paulatuk 8.4 213
100 Sachs Harbour 6.0 152
106 Tuktoyaktuk 6.3 161
79 Ulukhaktok 6.1 155

Environment Canada. Meteorological Service of Canada. Canadian Climate Normals. 1981-2010 Climate Normals & Averages.

Northwest Territories Precipitation
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