Although certain weather events, such as violent tornadoes, affect relatively small areas on the ground, there are a number of effects that are localized in their influence. ‘Localized weather’ first considers fog, which may be associated with widespread anticyclonic conditions leading to a significant drop in temperature at night, and relatively quiet, or windless, conditions. The two common forms of fog are radiation fog and advection fog. Haze and smog are also discussed along with local winds divided into two groups: sea, land, and lake breezes; and valley and mountain winds. Katabatic winds, föhn conditions, lake effect snow, ice storms, and glaze (or ‘black ice’) are also considered.