Home
Weather Dublin
WeatherRadar
RainfallRadar
TemperatureRadar
WindRadar
LightningRadar
Weather News
Editor's Pick
Discover the app
Weather widget
Contact us
Apps
Home / Editor's Pick /

Understanding the app: How to read rain forecasts

08:00
9 May 2023

Understanding the app
How to read rain forecasts

Rainfall warning

A common question we get asked is what does the percentage of rain really mean in a weather app? Well, we’re here to debunk the misconceptions.

It is important to remember that the percentage shows the chance of rain at that time, in your forecast area.

A 30% chance means a 30% chance that it will rain in your forecast area, and a 70% chance that it will stay dry.

When there are showers in the forecast, rather than a solid band of rain, there is a great deal of uncertainty. This is because showers can be extremely localised, forming and dissipating over short time periods.

Often with showers, the chance of precipitation could be fairly low, but the risk could be throughout the entirety of the day.

So, if you’re unsure about whether you’re at risk of catching a shower, stay updated via our WeatherRadar, where you can see where the showers are developing real-time.

Weather & Radar editorial team
More on the topic
Split weather graphic showing a low-pressure system with tight isobars over the UK on the left and a wind map on the right with strong gusts up to 90 mph, plus a windsock warning icon.
Thursday 2 April 2026

Gales and blizzards

Storm Dave disrupts Easter weekend
A harbour in Crete with a reddish-brown, overcast sky
Friday 3 April 2026

Blood red skies

Dust storm in Crete
Two-part weather map of the USA: warm air with high temperatures on the left, significantly cooler on the right. The colours change from red/orange to green/blue, particularly in the North and the Midwest.
Tuesday 31 March 2026

From 25, to 5 degrees

USA: Temperatures are up and down
All weather news
This might also interest you
UK temperature map dated 14.02 showing widespread subzero values in blue shading, with readings such as −4 in Glasgow, −3 in Dublin, and −2 in London, alongside a blue thermometer icon.
Friday 13 February 2026

Icy conditions

A frozen start to the weekend
Split image showing strong winds over the UK on a forecast map and widespread rain and snow on a weather radar map.
Tuesday 27 January 2026

Severe gales & heavy rain

Storm Chandra makes impact
Split weather map showing UK wind speeds in orange-red shades up to 40 mph on the left and warning levels in green-yellow on the right, with a central wind warning sign.
Wednesday 22 October 2025

Warnings active

Storm Benjamin impacts the UK
All articles
Weather & Radar

Weather & Radar is also available on

Google Play StoreApp Store

Company

Contact us Privacy Policy Legal info Accessibility statement

Services

Uploader

Socials

facebooktwitteryouTubelinkList