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Fall Outlook 2010


2010 Fall Temperature Outlook
2010 Fall Temperature Outlook

September 9, 2010 — Fall 2010 will start warm but by November expect cooler than normal temperatures as we move into moderate La Niña conditions. Find out more as The Weather Network meteorologists release their outlook for September, October and November 2010.

2010 Fall Precipitation Outlook
2010 Fall Precipitation Outlook

Summer Recap
After two cool, wet summers, 2010 saw a return to a more “traditional“ Canadian summer with warm temperatures and near normal precipitation. The Arctic saw higher than normal temperatures, part of a growing trend for that area. Eastern Manitoba and parts of the Arctic experienced higher than normal precipitation. The rest of Canada may have experienced periods of hot temperatures and wet weather, but in the end, the summer averaged out to be fairly normal.

Nice start to fall
Most of Canada should expect a slow start to fall with summer weather extending well into September. The El Niño conditions experienced across Canada last winter have shifted over the summer towards La Niña but the momentum of the warm summer pattern we've had is forecast to continue; at least initially. This trend continues through the fall leading to a more “traditional” cold Canadian winter than was experienced last year. Through October and November, a west to east cooling trend is expected with more pronounced effect in southern parts of Ontario and Quebec where November may be colder than normal. See below for provincial and regional breakdowns.

British Columbia
Temperatures for the fall period are expected to be near normal with the exception of the north coast of BC where temperatures are expected to be below normal. The north coast will also experience lower than normal precipitation while the south coast will see higher than normal precipitation. The rest of the province can expect near normal precipitation.

Alberta and Saskatchewan
Both provinces can expect a very typical fall season with near normal temperatures and precipitation.

Manitoba
The southeast part of the province including the city of Winnipeg will experience higher than normal temperatures and precipitation during the fall. The rest of Manitoba will see near normal fall conditions.

Ontario
Northern Ontario can expect higher than normal temperatures and precipitation this autumn. The rest of the province will see near normal temperatures and precipitation.

Quebec
The extreme north of the province will experience warmer than normal temperatures and near normal precipitation. The rest of Quebec can expect near normal fall conditions.

Atlantic Canada
Temperatures across the Maritimes and Newfoundland will be near normal this fall. Nova Scotia and central and eastern Newfoundland will experience higher than normal precipitation. This is in part due 2010 Atlantic hurricane season which is heating up with the increased potential for tropical storms to move north along the Eastern Seaboard towards Atlantic Canada rather than moving into the Gulf of Mexico. Precipitation amounts will be near normal for the rest of Atlantic Canada.

The North
Southern Nunavut will experience above normal temperatures with higher than normal precipitation for central Nunavut. The Yukon and Northwest territories will experience a near normal autumn season.

Regional Breakdown

CityTemperature ForecastPrecipitation ForecastAverage temperaturesAverage Precipitation
VancouverNear normalAbove normalHigh 14
Low 7
Mean 10
347 mm
VictoriaNear normalAbove normalHigh 14
Low 6
Mean 10
253 mm
CalgaryNear normalNear normalHigh 11
Low -2
Mean 4
72 mm
EdmontonNear normalNear normalHigh 9
Low -3
Mean 3
85 mm
ReginaNear normalNear normalHigh 10
Low -3
Mean 4
67 mm
SaskatoonNear normalNear normalHigh 9
Low -3
Mean 3
61 mm
WinnipegAbove normalAbove normalHigh 10
Low -1
Mean 4
113 mm
Thunder BayAbove normalAbove normalHigh 10
Low -1
Mean 4
206 mm
SudburyAbove normalNear normalHigh 10
Low 1
Mean 6
260 mm
OttawaNear normalNear normalHigh 12
Low 3
Mean 8
245 mm
TorontoNear normalNear normalHigh 14
Low 4
Mean 9
211 mm
WindsorNear normalNear normalHigh 16
Low 7
Mean 11
236 mm
MontrealNear normalNear normalHigh 13
Low 4
Mean 8
263 mm
FrederictonNear normalNear normalHigh 13
Low 2
Mean 7
295 mm
MonctonNear normalNear normalHigh 13
Low 2
Mean 7
301 mm
CharlottetownNear normalNear normalHigh 12
Low 4
Mean 8
315 mm
HalifaxNear normalAbove normalHigh 13
Low 4
Mean 9
378 mm
St. John’sNear normalAbove normalHigh 11
Low 3
Mean 7
437 mm
IqaluitAbove normalNear normalHigh -2
Low -8
Mean -5
121 mm
YellowknifeNear normalNear normalHigh 1
Low -6
Mean -3
91 mm
WhitehorseNear normalNear normalHigh 4
Low -5
Mean 1
77 mm

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