On Tuesday, December 3, mostly cloudy weather, rain, thunderstorm are expected in San Mateo. The lowest air temperature will be +25°C at 5 am, the highest temperature will be +27°C around 2 pm. The atmospheric pressure will be within 751-753 mm Hg. The relative humidity 91-98%. The wind will be mainly northerly 2 m/s with maximum gusts up to 4 m/s. Ultraviolet index 2, no sun protection is required

On Wednesday, December 4, mostly cloudy weather, rain, thunderstorm are expected in San Mateo. The lowest air temperature will be +25°C at 5 am, the highest temperature will be +30°C around 2 pm. The atmospheric pressure will be within 751-753 mm Hg. The relative humidity 79-98%. The wind will be mainly northeasterly 2 m/s with maximum gusts up to 4 m/s. Ultraviolet index 6, sun protection is required

On Thursday, December 5, mostly cloudy weather, rain, thunderstorm are expected in San Mateo. The lowest air temperature will be +25°C at 5 am, the highest temperature will be +30°C around 2 pm. The atmospheric pressure will be within 751-753 mm Hg. The relative humidity 76-98%. The wind will be mainly northerly 3 m/s with maximum gusts up to 6 m/s. Ultraviolet index 4, sun protection is required

On Friday, December 6, mostly partly cloudy, light rain, thunderstorm possible are expected in San Mateo. The lowest air temperature will be +25°C at 2 am, the highest temperature will be +30°C around 2 pm. The atmospheric pressure will be within 751-753 mm Hg. The relative humidity 78-95%. The wind will be mainly northerly 1 m/s with maximum gusts up to 2 m/s. Ultraviolet index 3, sun protection is required

On Saturday, December 7, mostly partly cloudy, rain, thunderstorm are expected in San Mateo. The lowest air temperature will be +25°C at 5 am, the highest temperature will be +29°C around 2 pm. The atmospheric pressure will be within 751-753 mm Hg. The relative humidity 80-97%. The wind will be mainly northeasterly 2 m/s with maximum gusts up to 2 m/s. Ultraviolet index 8, enhanced sun protection is required

On Sunday, December 8, mostly cloudy weather, rain, thunderstorm are expected in San Mateo. The lowest air temperature will be +24°C at 5 am, the highest temperature will be +28°C around 11 am. The atmospheric pressure will be within 752-754 mm Hg. The relative humidity 76-96%. The wind will be mainly northeasterly 3 m/s with maximum gusts up to 9 m/s. Ultraviolet index 8, enhanced sun protection is required

On Monday, December 9, mostly cloudy weather, light rain are expected in San Mateo. The lowest air temperature will be +23°C at 5 am, the highest temperature will be +25°C around 2 pm. The atmospheric pressure will be within 753-755 mm Hg. The relative humidity 83-92%. The wind will be mainly northwesterly 2 m/s with maximum gusts up to 4 m/s. Ultraviolet index 2, no sun protection is required

On Tuesday, December 10, mostly cloudy weather, light rain are expected in San Mateo. The lowest air temperature will be +23°C at 5 am, the highest temperature will be +25°C around 2 pm. The atmospheric pressure will be within 752-754 mm Hg. The relative humidity 89-94%. The wind will be mainly northerly 2 m/s with maximum gusts up to 4 m/s. Ultraviolet index 2, no sun protection is required

On Wednesday, December 11, mostly cloudy weather, light rain are expected in San Mateo. The lowest air temperature will be +23°C at 5 am, the highest temperature will be +26°C around 2 pm. The atmospheric pressure will be within 751-754 mm Hg. The relative humidity 92-99%. The wind will be mainly northerly 2 m/s with maximum gusts up to 4 m/s. Ultraviolet index 4, sun protection is required