For Business
|
Warnings
Data Suite
Forensics
Advertising
Superior Accuracy™

St Mellons, Cardiff

Location

Location News Videos

Use Current Location

Recent

St Mellons

Cardiff

No results found.

Try searching for a city, zip code or point of interest.

Create Your Account Unlock extended daily and hourly forecasts — all with your free account.

Have an account already? Log In

settings

St Mellons, Cardiff Weather

Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel

For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Hourly

10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

1 PM

70°

RealFeel® 69°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

1%

Cloudy

RealFeel Shade™67°

WindW 13 mph

Air QualityExcellent

Max UV Index2.0 (Low)

Wind Gusts22 mph

Humidity64%

Indoor Humidity64% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover98%

Visibility10 mi

Cloud Ceiling2900 ft

2 PM

70°

RealFeel® 68°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

5%

Cloudy

RealFeel Shade™66°

WindW 14 mph

Air QualityExcellent

Max UV Index2.0 (Low)

Wind Gusts24 mph

Humidity65%

Indoor Humidity65% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover96%

Visibility10 mi

Cloud Ceiling2900 ft

3 PM

69°

RealFeel® 67°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

5%

Cloudy

RealFeel Shade™65°

WindWSW 15 mph

Air QualityExcellent

Max UV Index1.7 (Low)

Wind Gusts28 mph

Humidity67%

Indoor Humidity67% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover93%

Visibility10 mi

Cloud Ceiling2900 ft

4 PM

68°

RealFeel® 66°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

3%

Cloudy

RealFeel Shade™64°

WindWSW 16 mph

Air QualityExcellent

Max UV Index2.1 (Low)

Wind Gusts31 mph

Humidity68%

Indoor Humidity68% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling19200 ft

5 PM

67°

RealFeel® 64°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

1%

Mostly cloudy

RealFeel Shade™63°

WindW 16 mph

Air QualityExcellent

Max UV Index1.7 (Low)

Wind Gusts31 mph

Humidity70%

Indoor Humidity66% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover88%

Visibility10 mi

Cloud Ceiling19200 ft

6 PM

65°

RealFeel® 63°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

1%

Mostly cloudy

RealFeel Shade™61°

WindW 15 mph

Air QualityFair

Max UV Index1.5 (Low)

Wind Gusts30 mph

Humidity71%

Indoor Humidity65% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover86%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

64°

RealFeel® 60°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

4%

Mostly cloudy

RealFeel Shade™60°

WindW 15 mph

Air QualityFair

Max UV Index0.8 (Low)

Wind Gusts30 mph

Humidity73%

Indoor Humidity63% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover85%

Visibility10 mi

Cloud Ceiling19200 ft

8 PM

63°

RealFeel® 59°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

35%

Mostly cloudy

RealFeel Shade™59°

WindW 15 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts30 mph

Humidity75%

Indoor Humidity63% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover89%

Visibility10 mi

Cloud Ceiling2100 ft

9 PM

62°

RealFeel® 57°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

39%

Cloudy

RealFeel Shade™57°

WindWSW 13 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts30 mph

Humidity82%

Indoor Humidity66% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover94%

Visibility10 mi

Cloud Ceiling2100 ft

10 PM

61°

RealFeel® 55°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

42%

Showers

WindWSW 13 mph

Air QualityFair

Wind Gusts30 mph

Humidity88%

Indoor Humidity68% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2100 ft

11 PM

60°

RealFeel® 53°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

51%

Showers

WindWSW 13 mph

Air QualityFair

Wind Gusts31 mph

Humidity94%

Indoor Humidity71% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Rain0.01 in

Visibility7 mi

Cloud Ceiling2100 ft

Hourly Weather Forecast for St Mellons

AccuWeather's hourly forecast for St Mellons provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 70° with a RealFeel® of 69°, cloudy with a 1% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

Further Ahead

Tomorrow

Friday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Top Stories

Weather Forecasts

Fourth of July week furnace: Dangerous heat dome for 250 million

2 hours ago

Severe Weather

Thunderstorms to circle massive heat furnace into Fourth of July

1 hour ago

Live: World Cup 2026 weather updates

LATEST ENTRY

Dangerous heat to impact fans outside Dallas, Atlanta matches

19 hours ago

Weather Forecasts

Fourth of July weather forecast: Heat, storms and smoke ahead

1 hour ago

Weather News

Why heat waves can turn deadly: AccuWeather index tracks intensity

20 hours ago

Featured Stories

Astronomy

Asteroid Day marks 1908 impact as scientists ready for new discoveries

19 hours ago

Weather News

Chicks fly from nest of famous California eagles Jackie and Shadow

20 hours ago

Weather News

Venezuela death toll surges as crews search after earthquakes

2 days ago

Recreation

12-year-old injured by bison in Yellowstone National Park

1 day ago

Weather News

At least 4 dead in Kentucky floods with more rainfall on the way

2 days ago

World Europe United Kingdom Cardiff St Mellons

Weather Near St Mellons:

Bristol, City of Bristol
Cardiff, Cardiff
Swansea, Swansea

Company

Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us

Products & Services

For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations

Apps & Downloads

iPhone App Android App See all Apps & Downloads

Subscription Services

AccuWeather Premium AccuWeather Professional

More

AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News

Company

Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us

Products & Services

For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations

Apps & Downloads

iPhone App Android App See all Apps & Downloads

Subscription Services

AccuWeather Premium AccuWeather Professional

More

AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News

© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.

Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...