The best way, of course, is to check your favorite source for local weather.
There are some ways to guess that it'll snow, but by the time you do it will almost be happening, and you could save yourself time by checking the above.
Before a storm, typically you get get high cirrus that gradually lower - it may start with mid-level altostratus or altocumulus that lower and eventually turn into a grey overcast. It will often warm up closer to freezing if it has recently been warm, for dynamic reasons I won't get into. Actually, people who live off the land such as natives of the Arctic, are quite good at predicting the onset of storms.
Some people claim there is a smell to the air. I don't know how much truth there is to that, or why it would be true.
approaching strong low-pressure system. These conditions often occur when a cold front is moving into an area, bringing unstable atmospheric conditions with it. Wind and thunderstorms are common along and behind the cold front as the contrasting air masses interact.
The appearance of cirrus clouds is an early sign of an approaching warm front.
The air behind a cold front is noticeably colder and drier than the air ahead of it. When a cold front passes through, temperatures can drop more than 15 degrees.
cirrus clouds
Thunder storms occur when hot air and cold air run into each other. Therefore one way of predicting them is if you notice a cold front has come during warm weather, or a warm front during cold weather.
Bob Kudzma is reporting on a cold front approaching, which may cause it to snow!
A cold front approaching Texas from the north.
approaching strong low-pressure system. These conditions often occur when a cold front is moving into an area, bringing unstable atmospheric conditions with it. Wind and thunderstorms are common along and behind the cold front as the contrasting air masses interact.
The appearance of cirrus clouds is an early sign of an approaching warm front.
If you know that a warm front is approaching, you can forecast when it will rain, and can cancel a barbecue. The warm front may have collected a lot of moisture as it passed over the ocean. Then, if it meets a cold front, rain will fall, or snow if in winter.
A warm front is likely approaching if you see cirrus clouds high in the sky. These clouds are indicators of an advancing warm front because they form at high altitudes where warm air is being lifted over the cooler air present ahead of the front. This lifting of warm air can produce cirrus clouds, which are composed of ice crystals and are often thin and wispy in appearance.
They stand for an approaching storm front. If I remember correctly, a red line means a warm front and a blue line means a cold front. The triangles show which direction the front is moving. Hope that helps.
The air behind a cold front is noticeably colder and drier than the air ahead of it. When a cold front passes through, temperatures can drop more than 15 degrees.
cirrus clouds
On thermal sights, the highest temperature is displayed as a bright white. This may be different when using different types of machines.
you are approaching head on.
Thunder storms occur when hot air and cold air run into each other. Therefore one way of predicting them is if you notice a cold front has come during warm weather, or a warm front during cold weather.