also: にっこうさ
diurnal temperature range; daily temperature range
Meteorological term for the difference between the highest and lowest temperature in a single day.
砂漠では日較差が非常に大きい。
In deserts, the diurnal temperature range is very large.
今日の日較差は15度に達した。
Today's daily temperature range reached 15 degrees.
Standard kanji spelling for the meteorological term.
Alternate reading; less common than にちかくさ.
Compound of 日 (day) and 較差 (range, difference). The reading にちかくさ is the standard on'yomi combination; にっこうさ is a less common variant.