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The Cold Air Is Coming

By Terry Eliasen, Meteorologist, WBZ-TV Exec. Weather Producer
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BOSTON (CBS) – The cold air is coming. You will feel it if you go outside this evening, pouring in from Northern Canada, a somewhat unusually cold air mass for this date in October.

Check: Current Conditions | Weather Maps | Interactive Radar

Granted the suburbs typically have a freeze by October 6th, so by that calendar we are overdue.

However, the depth of this cold is somewhat rare for early/mid October, especially for the City of Boston, where the first frost/freeze doesn’t usually occur until early November.

Temperatures are expected to dip below 32 degrees shortly after midnight in the suburbs and plummet into the 20s by dawn. It won’t be until about 8 or 9 a.m. that we crawl back above freezing, meaning several hours of sub-freezing temperatures.

This will bring an end to the growing season for most, and it will also mean the end for many mosquitoes and the Triple E/West Nile threat.

If you have vegetation that you want to preserve for a bit longer, you will need to cover it very well tonight, or better yet, bring it indoors if possible.

In the city of Boston and along the South Shore, there is a frost advisory. In these locations, temperatures are likely to only drop to the low 30s, producing only some scattered frost thanks to the milder ocean nearby.

Over Cape Cod and the Islands, where they are surrounded by warmer ocean water, low temperatures should bottom out in the upper 30s and low 40s.

There will be a quick rebound on Saturday, highs will climb into the 50s by midday and afternoon.

Temperatures will stay well above freezing Saturday night as clouds advance from the west, and highs on Sunday will reach well into the 60s.

You can follow Terry on Twitter at @TerryWBZ.

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