This was just released from
Somewhat different from that Weather Advanced forecast.
We expect most of the Pacific Northwest to slightly above normal temperatures and below normal precipitation early September. However, it should cool quickly to below normal temperatures and experience near normal precipitation. Expect an early frost, with potential mountain snow arriving by late November.
To the north, in Northern BC, Coastal Yukon, and Alaska, expect cool and slightly dry condition, that turn wet starting from the west and push eastwards. In late fall, temperatures will become near normal or slightly above average.
Alberta and Northern Saskatchewan will see slightly above normal temperatures early September. Then temperatures will turn cool, with slightly above normal precipitation.
Southern Saskatchewan, and Southern Manitoba, extending to Idaho, Northern Wyoming, South Dakota, and Minnesota will experience above normal temperatures. Then it will become cooler nearing November. Precipitation will be slightly below normal for the fall. However, by November, the area will be seeing near normal precipitation.
Other than Atlantic Canada, rest of Canada should see alternating periods of warm and cool temperatures. Precipitation will be near normal, except Manitoba where precipitation has potential to be slightly above normal.
Atlantic Canada, extending to parts of Newfoundland and Labrador, along with Northeast US will be quite cool and wet early. Temperatures should rise to above normal by October. However, a few colder periods could still sneak into the generally warm period.
In the US Southwest, temperatures will be warm early, but drop close to average by late fall. Coastal areas will be cooler than normal in late fall.
A high pressure dome could station itself near the areas south of the Great Lakes, extending to Missouri. This will cause drier than normal conditions for the near by areas.
US Southeast will be quite warm and wet early on. Somewhere around October, expect temperatures to drop to near normal, but wet conditions may stick around. A band of near normal temperatures will be stationed between the US Southeast and US Northeast.