While there is a fairly extensive literature on the relationship between weather and productivity, little research has focused on the impact of weather on judicial activity. The findings from the few investigations conducted arrive at different conclusions depending on the country. We contribute to this area of research by conducting the first analysis using French data. We propose an empirical analysis of the impact of outdoor temperature and rainfall levels on court decisions made in French courts of appeal during divorce proceedings, based on a sample of approximately 4,000 court decisions correlated with daily and geo-localized meteorological data. The analysis focuses on decisions regarding the amount of child support to be paid. We show that, all other things being equal, when it is very hot at night preceding the judgment, the panels of judges tend to set lower amounts of child support.