En ligero

En ligero
 

Por la noche, temperaturas en ligero a moderado descenso en el centro y norte peninsular quedándose por debajo de los dos dígitos en Burgos con 8°, León con 7° y Soria con 9°.

I’m looking for help with this expression:
…temperaturas en ligero a moderado descenso…

Could it mean:
…temperature falling moderately…

.... temperatures falling lightly to moderately.... (in light to moderate descent)

I agree with Perikles.
It could be reworded as: "...temperaturas en descenso de ligero a moderado". The altered order of the adjectives was done because the writer must have felt it sounded more literary like that, I suppose.

Many thanks, guys.