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## What does rain percentage really mean?

The official definition of the probability of precipitation by the National Weather Service is the chance of precipitation (rain, snow, etc.) **occurring at any one spot in the area covered by the forecast**. … If we’re 50% confident that 100% of the Valley will get rain, then there’s a 50% chance of rainfall.

## What does 30% mean on the weather app?

For example, a 30 percent **chance of rain** may mean 100 percent confidence that only 30 percent of the forecast area is going to get rain.

## What does 50% chance of rain actually mean?

A 50 percent chance of rain means there is a 50 percent **chance for any one spot in the forecast area to get wet during the forecast period**.

## Does 60% chance of rain mean it will rain?

If they say 60% chance of rain, **60% of their area will experience rain at some point during the forecast period**. … Likewise, 20% chance of rain means you’re unlikely to see any rain at all today, or 20% of the area is going to be drenched.

## Is 70 percent chance of rain high?

It’s easy to think that a 70 percent chance of rain means **a pretty hefty rainfall is likely**, and a 20 percent chance means that only a little rainfall is on the way. But that would be wrong, too. Probability of precipitation doesn’t tell you anything about how long it is going to rain or how much it is likely to rain.

## What does the of rain mean on the weather app Iphone?

RAIN IT IN

“Certainly for the Met Office app, the percentage of rain means the chance of rain at that time for that location. “So 60 percent means **a 60 percent chance of rain, 40 percent chance of dry**.

## Is 40 percent chance of rain a lot?

According to the National Weather Service, if you see a 40 percent chance of rain, “there is a 40 percent **chance that rain will occur at any given point in the area**.”

## What does percent chance of rain mean Reddit?

YSK that ‘X percent chance of rain’ doesn’t actually mean the chance of precipitation. It is worked out by **confidence x percentage of area getting hit by rain**. So, if the forecaster was 100 percent there would be rain, but only for 20 percent of the area, then the chance of rain would only be 20 percent.

## How do you read weather percentages in rain?

What Does the Percentage of Rain Mean? According to a viral take on the internet, the **percentage of rain doesn’t predict the chances of rain**. Instead, it means a certain percentage of the forecasted area will definitely see rain—so if you see a 40% chance, it means 40% of the forecasted area will see rainfall.

## What is the most accurate weather app?

**2021’s Top 6 Mobile Apps For Accurate Weather Forecasting**

- The Weather Channel: World’s Most Accurate Forecasting App. …
- Dark Sky. …
- AccuWeather: Live Local Forecast & Radar. …
- RadarScope. …
- Weather Underground. …
- Carrot Weather: Crazy-Powerful Weather App.