For those hoping to see the rare transit of the planet Mercury on Monday through the sun, the weather in the United States will either be very good, with clear skies and excellent viewing prospects, or very bad, with cloudy skies and perhaps light rain or winter precipitation thrown in for a bad measure.
The National Weather Map for Monday morning (November 11) – when transit will begin through the United States – shows a cold front stretching southwest of East Maine to the developing storm over North Texas. Another cold front will extend southeast of Washington State, down into northern New Mexico. Meanwhile, a large and unusually cold (November) high-pressure system will be concentrated near eastern Montana and western Dakota.
Low viewing ratios for parts of the US
Unfortunately, a large flow of dense clouds is expected to cover much of Texas and Oklahoma, as well as the central Great Plains, Great Lakes Region, much of the greater Ohio Valley, as well as parts of the Deep South, Southeastern New York, and Central and Northern New England. In addition, rain and rain are expected to fall across the central and southern plains, possibly mixed with sleet for New York State and central and northern New England.
In the west, where it will be much colder, up to 4 inches of snow may be on the ground by Monday morning for parts of southern and central Montana, northeast Wyoming, central and western sections of South Dakota and northern Nebraska. And snowstorms and storms may fall over Michigan's Upper Peninsula.
But if you live anywhere else, the time to get at least some recurring transit looks just fine. Chance for a good view
Clear, sunny skies should be the rule across the Pacific Northwest, California, much of the Rocky Mountains west of the Continental Dividend and the desert southwest. Parts of the Northern Plains near the Canadian border may receive some random clouds, allowing some views of the sun during transit time.
Similarly, a mixture of sunshine and occasionally broken cloud cover is expected in southern New England, southeastern New York (including New York City), northern New Jersey and southeastern Pennsylvania.
Clear skies are expected to have rarely scattered clouds for the Mid-Atlantic, Piedmont, and Southeast, as well as Florida and Alabama.
Safe Watch Tips
Those in preferred viewing regions must be sure to be constricted.
In the East, temperatures are expected to be generally in the 30s and 40s, with the exception of Florida, where temperatures should range from the mid-50s in the north to the low 70s in the south.
Outside the West, expect temperatures to range from the 20s in the Rockies to the 40s and 50s near the Pacific Coast and close to 60 in the Southwestern Desert.
For those places in the Northern Plains that overlook the sun, bitter cold temperatures will prevail in single digits to near zero. Brrr!
Note that the prediction we present here is simply a "broad brush summary". To get the latest weather forecast tailored specifically for your hometown, click this NOAA link.
You will find links to national weather services in the US as well as Puerto Rico and American Samoa. All you have to do is find your region and click on the weather office closest to your location; from there you will be able to get the latest weather forecast.
And if the clouds are blocking your view, you can also watch the transit to your smartphone or computer via the online broadcast of the Slooh Observatory here. Space.com will also stream the live webcast here.
For those who will miss transit due to bad weather, we would usually say, "Wait until next." Unfortunately, after this year, the next Mercury transits will come on November 13, 2032 and November 7, 2039, but neither one will not see it from North America (Europe, Africa and Asia will be turned to the sun during the respective transits).
The next Mercury transit, which will be available from North America, will be Friday, May 7, 2049. Mercury will take six hours and 41 minutes to pass the solar disk.
If you live through the central and western United States, be sure to have a clear and unobstructed view of the east-southeast horizon, since the rising sun will already have the tiny spot on Mercury's disk; in the Pacific time zone, transit will now be halfway through by the time the sun clears the horizon.
Unlike those who live in the eastern time zone, they will be able to observe the entire intersection of Mercury through the solar disk from start to finish.
Editor's note: Visit Space.com on November 11 to see live broadcasts of Mercury's rare transit, as shown by telescopes on Earth and in space, together with full coverage of the celestial event. If SAFE snapshot a photo of Mercury transit and you want to share it with Space.com and our news partners for a story or gallery, you can submit images and comments in spacephotos @ Zhou Rao guest lecturer at the New York Planetarium Hayden . 
He wrote about astronomy for magazine. Natural History for Farmers' Almanac and other publications, and is also a meteorologist on Verizon FiOS1 News in the New Hudson Valley in York. Follow us on Twitter @Spacedotcom and on Facebook .