# Percent chance of rain?

A forecast that says, for instance, "there is a 10% chance of rain tomorrow," means that on 10 out of 100 days with weather conditions very similar to the conditions expected tomorrow, at least a trace of train has occurred.

Some will disagree with this answer for various reasons. For the results of research that evaluated how understanding of percentage chance of precipitation varies around the world, see "A 30% Chance of Rain Tomorrow: How Does the Public Understand Probabilistic Weather Forecasts?," available as a PDF file via the URL http://www.mpib-berlin.mpg.de/en/mitarbeiter/gigerenzer/pdfs/RainFinal.pdf .

### What does 60 percent chance of scattered thunderstorms mean?

60% chance for Scattered Thunderstorms means there is a very likely chance that you will see thunderstorms scattered around throughout the day. A scattered thunderstorm means that one moment their maybe rain and thunder, the next moment it may be clear. Use this table for reference: 0-20% Chance of Rain is: Very unlikely 21-49% Chance of Rain is: Unlikely but should be expected 50-75% Chance of Rain is: Likely and should be expected 75+% Chance…

### Does a forty five percent of chance rain mean that it will rain?

No. It means there's a forty five per cent change of rain. ========================================== When a weather forecast says that there is 'a forty five percent of chance rain,' that means neither that it will rain nor that it will not rain. It certainly indicates that rain is possible, however, and that the chances are almost 50/50 either way. Weather forecasting is not and never will be an exact science. Weather is highly variable at the…

### Probability of precipitation means what?

Forecasts issued by the National Weather Service routinely include a "PoP" (probability of precipitation) statement, which is often expressed as the "chance of rain" or "chance of precipitation". EXAMPLEZONE FORECASTS FOR NORTH AND CENTRAL GEORGIA NATIONAL WEATHER SERVICE PEACHTREE CITY GA 119 PM EDT THU MAY 8 2008 GAZ021-022-032034-044046-055-057-090815- CHEROKEE-CLAYTON-COBB-DEKALB-FORSYTH-GWINNETT-HENRY-NORTH FULTON- ROCKDALE-SOUTH FULTON- INCLUDING THE CITIES OF...ATLANTA...CONYERS...DECATUR... EAST POINT...LAWRENCEVILLE...MARIETTA 119 PM EDT THU MAY x 2008 .THIS AFTERNOON...MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF…

### When there is a 40 percent chance of rain - what does that mean?

There needs to be a location as well as a time interval. A statement such as "there is a 40% chance that it will rain in Yourtown over the 12 hours starting at sunrise tomorrow" means that if you consider a whole lot of days like tomorrow - with the same sort of weather as you experienced over the last few days - then in 4 days out of 10 (40%), it will rain tomorrow…

### What is the percentage of people who use tankless water heaters?

1: If your saying the whole world then it's 0.00153 percent. 2:If your saying any random country then there is a 0.45731 percent chance. 3:(a)If your talking about a random city(large) then there is a chance of 0.8662... percent chance,(b)random city(medium) then there is a chance of 0.921... percent chance,(c)random city(small) then there is a chance of 0.9992432112 percent chance. 4:(a)If you are asking about a neighborhood(large)there is a chance of 1.28436.. percent chance,(b)a neighborhood(medium)there…