Stevenson screen

[1] It forms part of a standard weather station and holds instruments that may include thermometers (ordinary, maximum/minimum), a hygrometer, a psychrometer, a dewcell, a barometer, and a thermograph.

The whole screen is painted with several coats of white to reflect sunlight radiation, and usually requires repainting every two years.

The siting of the screen is very important to avoid data degradation by the effects of ground cover, buildings and trees: WMO 2010 recommendations, if incomplete, are a sound basis.

In the northern hemisphere, the door of the screen should always face north so as to prevent direct sunlight on the thermometers.

In some areas the use of single-unit automatic weather stations is supplanting the Stevenson screen and other standalone meteorological equipment.