Hourly Weather Forecast - Merthyr, Carmarthenshire - Sir Gaerfyrddin, GB

9 PM
53°F
90%
24mph
SSW
Light Rain
Humidity
89%
Feels like
53°F
Dew Point
50°F
10 PM
53°F
90%
25mph
SSW
Light Rain
Humidity
90%
Feels like
53°F
Dew Point
50°F
11 PM
53°F
90%
23mph
SSW
Rain
Humidity
90%
Feels like
53°F
Dew Point
50°F

Wind chill temperatures Monday A.M.

Cold Weather Chills the Nation Down to the Gulf

Extreme cold paired with their wind chill values will shiver much of the nation.

Snowfall forecast through Monday evening.

Mid-Atlantic, Great Lakes Snow Piles Up

Monday's Weather Outlook

Monday's Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

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