On Monday, December 2, mostly cloudy weather, no precipitation are expected in Hayward. The lowest air temperature will be -12°C at 6 am, the highest temperature will be -8°C around 3 pm. The atmospheric pressure will be within 737-739 mm Hg. The relative humidity 62-86%. The wind will be mainly northwesterly 4 m/s with maximum gusts up to 7 m/s. Ultraviolet index 2, no sun protection is required

On Tuesday, December 3, mostly cloudy weather, no precipitation are expected in Hayward. The lowest air temperature will be -14°C at 6 am, the highest temperature will be -2°C around 9 pm. The atmospheric pressure will be within 726-738 mm Hg. The relative humidity 59-82%. The wind will be mainly southerly 7 m/s with maximum gusts up to 14 m/s. Ultraviolet index 2, no sun protection is required

On Wednesday, December 4, mostly partly cloudy, light snow are expected in Hayward. The lowest air temperature will be -6°C at 9 pm, the highest temperature will be +1°C around 3 pm. The atmospheric pressure will be within 725-731 mm Hg. The relative humidity 62-85%. The wind will be mainly northwesterly 8 m/s with maximum gusts up to 15 m/s. Ultraviolet index 2, no sun protection is required

On Thursday, December 5, mostly partly cloudy, no precipitation are expected in Hayward. The lowest air temperature will be -13°C at 6 am, the highest temperature will be -9°C at midnight. The atmospheric pressure will be within 731-735 mm Hg. The relative humidity 55-71%. The wind will be mainly northwesterly 6 m/s with maximum gusts up to 8 m/s. Ultraviolet index 3, sun protection is required

On Friday, December 6, mostly cloudy weather, snow are expected in Hayward. The lowest air temperature will be -9°C at 6 am, the highest temperature will be -3°C around 3 pm. The atmospheric pressure will be within 736-738 mm Hg. The relative humidity 55-70%. The wind will be mainly easterly 5 m/s with maximum gusts up to 7 m/s. Ultraviolet index 1, no sun protection is required

On Saturday, December 7, mostly cloudy weather, light snow are expected in Hayward. The lowest air temperature will be -10°C at 9 pm, the highest temperature will be -3°C around 3 pm. The atmospheric pressure will be within 737-742 mm Hg. The relative humidity 66-83%. The wind will be mainly northerly 4 m/s with maximum gusts up to 9 m/s. Ultraviolet index 3, sun protection is required

On Sunday, December 8, mostly cloudy weather, snowstorm are expected in Hayward. The lowest air temperature will be -12°C at 3 am, the highest temperature will be +2°C around 6 pm. The atmospheric pressure will be within 730-741 mm Hg. The relative humidity 69-82%. The wind will be mainly southerly 7 m/s with maximum gusts up to 18 m/s. Ultraviolet index 3, sun protection is required

On Monday, December 9, mostly cloudy weather, light precipitation are expected in Hayward. The lowest air temperature will be -7°C at 9 pm, the highest temperature will be +2°C at noon. The atmospheric pressure will be within 720-728 mm Hg. The relative humidity 67-80%. The wind will be mainly southwesterly 8 m/s with maximum gusts up to 16 m/s. Ultraviolet index 2, no sun protection is required

On Tuesday, December 10, mostly partly cloudy, no precipitation are expected in Hayward. The lowest air temperature will be -13°C at 6 pm, the highest temperature will be -8°C at midnight. The atmospheric pressure will be within 726-732 mm Hg. The relative humidity 61-72%. The wind will be mainly northwesterly 2 m/s with maximum gusts up to 7 m/s. Ultraviolet index 3, sun protection is required

On Wednesday, December 11, mostly cloudy weather, light snow are expected in Hayward. The lowest air temperature will be -16°C at midnight, the highest temperature will be -13°C around 6 am. The atmospheric pressure will be 731 mm Hg. The relative humidity 70-74%. The wind will be mainly southerly 4 m/s with maximum gusts up to 12 m/s. Ultraviolet index 3, sun protection is required