dagtemperatur

Dagtemperatur is the average air temperature for a given day, typically expressed in degrees Celsius. It is commonly defined as the mean of hourly temperature observations over a 24-hour period at a standard meteorological station.

The exact interval used to define the day can vary: many datasets use midnight-to-midnight local time; others may use calendar day or solar day, which can lead to small differences in the reported dagtemperatur from one data source to another. Measurements are usually taken at about 2 meters above ground in a well-exposed site (standard meteorological shelter).

Dagtemperaturen is one of several daily temperature descriptors, alongside maximum temperature (högsta temperatur) and minimum temperature (lågsta temperatur). It is used to summarize the warmth of a day and to construct climate normals (for example 30-year averages). It also features in degree-day calculations relevant to agriculture and energy planning.

In Sweden and other countries, dagtemperatur data are compiled by national meteorological services and are used in weather forecasts, climate monitoring, and historical climate analysis. The concept provides a practical, aggregated measure of daily warmth that complements records of daily highs and lows.