Higher pressure is usually associated with sunny weather, lower pressure with stormy weather. The temperature to which the air needs to be cooled for moisture to condense, for example, as dew.

Observed at 17:00, Monday 3 February BBC Weather in association with MeteoGroup, external All times are Arabian Standard Time (Asia/Riyadh, GMT+3) unless otherwise stated.

Portal in the fog? Stunning, optical display stops commuters in their track ...

Night - Clear. Winds from WNW to W at 6 mph (9.7 kph). The overnight low will be 47 °F (8.3 °C). Sunny with a high of 71 °F (21.7 °C). Winds variable at 6 to 11 mph (9.7 to 17.7 kph). Sunny ...

Night - Partly cloudy with a 51% chance of precipitation. Winds from NNW to NW at 8 to 11 mph (12.9 to 17.7 kph). The overnight low will be 56 °F (13.3 °C). Sunny with a high of 73 °F (22.8 °C ...