Temperatures will be in the mid-70s on Halloween. Here's the full forecast for the weekend.

Halloween is finally here. Whether you are trick-or-treating or going out to celebrate, you might want to check the weather forecast for any rain chances.

"As we know from decades of observations, a very strong El Niño will likely bring a southward and eastward shift to the jet stream for the contiguous U.S., which tilts the odds toward stormier weather across the South," Ken Graham, director of NOAA's National Weather Service, said in an October 15 statement.

El Niño is bringing another powerful storm to California and the Southwest this Halloween weekend, which will eventually develop into a cross-country system that will deliver heavy rain, severe weather and high elevation snow across 35 states through next week.

Scattered showers and storms in metro Phoenix could produce a half-inch to an inch of rain throughout Friday as a flood watch is in effect.

Scattered heavy downpours will be possible on Friday, and more weather changes are anticipated by Halloween and early next week.

While Halloween won't be a washout, there will be rounds of showers for the first half of the day into early afternoon. A shower or two may linger into the early evening, but the steadiest rain will likely move out by then.

After above average rainfall in October, reservoirs across England are still very low with much of the country remaining in drought, as Simon King explains.