I revisit the intertemporal labor supply framework, using exogenous variations in daily weather to see how time at work varies with rain. In my model, a rainy day is associated with a lower enjoyment of leisure, effectively increasing wages and bringing more hours at work. I test the model using data from the American Time Use Survey, supplemented with daily weather. I find that, on rainy days, men shift on average 30 minutes from leisure to work. Computations give a rough estimate of the intertemporal elasticity of labor supply of around 0.01, in line with the rest of the literature.