Halloween is almost here — but it may not just be trick or treaters giving you a fright.
The Weather Channel UK has looked at the different types of spooky weather that could add some extra atmosphere to October 31.
From angry red skies to rolling mist and creepy cloud patterns, just about any kind of weather is possible in the UK in October.
Kirsty McCabe, senior meteorologist at The Weather Channel UK , has picked out her favourite freaky phenomena for Halloween.
She said: "Halloween is a scary time of year when it comes to the weather. From howling gales to spooky fogs, just about any kind of weather is possible. Last year it was positively balmy in the UK with temperatures well above average, yet in 2008 we saw snow and record lows."
Here's some weird weather to look out for this Halloween:
Mist rolling in off the sea
Kirsty said: "A horror film staple, sea mist occurs when mild air moves in over a cooler sea."
Thunderstorms
Kirsty said: "Thousands of storms take place at any one time across the globe but that doesn’t stop most people jumping at the crack of thunder. The flash of lightning is a large electrical spark while the rumble of thunder is caused by the noise of intense heating and expansion of air along the path of the lightning."
Halo around the moon
Kirsty said: "One for the werewolves. This optical phenomenon is created when the sunlight reflected by the moon passes through ice crystals in high-level cloud and is refracted to create a faint ring around the moon."
Brocken spectre
Kirsty said: "This suitably spooky sounding effect occurs when you stand above a cloud - on a mountain for example - with the sun behind you. When you view your shadow the light is reflected back in such a way that spooky circular ‘glory’ or saint’s halo appears around the point directly opposite the sun."
Lenticular clouds
Kirsty said: "My favourite and the one most often mistaken for UFOs thanks to their distinctive oval shape. These clouds form downwind of mountains, when the air undulates in waves and the cloud forms at the crest of each wave."
Blood red skies
Kirsty said: "At this time of year we often enjoy spectacular sunsets as we race home ahead of the vampires. In contrast to what you might think, dust and air pollution do not make a sunset more dramatic."