The Wayback Machine - https://web.archive.org/all/20050205014749/http://www.metoffice.com:80/weather/symbol_key.html
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Key to symbols
 
WEATHER SYMBOLS
Clear sky (night) Clear sky (night)   Low-level cloud Low-level cloud   Sleet shower (night) Sleet shower (night)   Light snow Light snow
Sunny Sunny   Light rain shower (night) Light rain shower (night)   Sleet shower (day) Sleet shower (day)   Heavy snow shower (night) Heavy snow shower (night)
Partly cloudy (night) Partly cloudy (night)   Light rain shower (day) Light rain shower (day)   Sleet Sleet   Heavy snow shower (day) Heavy snow shower (day)
Sunny intervals Sunny intervals   Drizzle Drizzle   Hail shower (night) Hail shower (night)   Heavy snow Heavy snow
Dust Dust   Light rain Light rain   Hail shower (day) Hail shower (day)   Thundery shower (night) Thundery shower (night)
Mist Mist   Heavy rain shower (night) Heavy rain shower (night)   Hail Hail   Thundery shower (day) Thundery shower (day)
Fog Fog   Heavy rain shower (day) Heavy rain shower (day)   Light snow shower (night) Light snow shower (night)   Thunder storm Thunder storm
Medium-level cloud Medium-level cloud   Heavy rain Heavy rain   Light snow shower (day) Light snow shower (day)   Tropical storm Tropical storm
WIND SYMBOLS
On the wind forecast maps, the number in the circle indicates the wind speed in miles per hour, and the arrow points in the direction the wind is blowing.
E.g. Wind symbol indicates a forecast wind of 10 mph, coming from the south-west.
TEMPERATURE SYMBOLS
On the temperature forecast maps, the number in the white circle indicates the forecast temperature (in degrees Celsius).
e.g. indicates a forecast temperature of 15 °C.
 
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