Canada

Weather Underground Forecast for Wednesday, November 04, 2009.

Mild weather is expected over the Central US as light showers continue over the Great Lakes on Wednesday. A weak low pressure system will track eastward from the Upper Midwest and move into the Great Lakes. Flow around this system will create a cold front that will push into the Upper and Mid-Mississippi Valley while sweeping through the Central Plains. There is not much moisture associated with this system, thus, no significant rainfall is expected along this front. Less than a tenth of an inch of rain will sprinkle over the Great Lakes and Ohio River Valley, while the rest of the front will produce patchy clouds. Expect the northern regions to see highs in the 50s, while the Southeast will reach into the 70s again on Wednesday.

High pressure will build in behind this system, which will allow for mostly sunny skies and warm temperatures. The Northern Plains will approach the 60s, while the Southern Plains are expected to remain in the 70s. Cool overnight low temperatures will accompany this system again on Wednesday as clear skies allow for drastic nighttime cooling. The Northern Plains will see lows near freezing, as the Central and Southern Plains see another chilly night in the 40s. Ahead of the front in the Tennessee Valley and Mid-Atlantic States will also see cool conditions. Freeze warnings will remain in effect for the region as lows will dip into the 30s Wednesday night. The Northeast may see a mix of snow and rain as the front approaches from the west. No significant precipitation is anticipated over the region.

In the West, a low pressure system will approach the Pacific Northwest but will not yet reach the region. Thus, the West Coast will see another sunny and warm day on Wednesday.

Temperatures in the Lower 48 states Tuesday ranged from a low of 12 degrees at Kremmling, Colo. to a high of 98 degrees at East Mesa, Ariz.