Evidence that you can get "hooked" on voting
The effect of 1mm of rain on voter turnout in percentage points across all U.S. counties, 1952–2012 presidential elections. The values near zero for days leading up to Election Day suggest that rain on those days doesn't impact turnout much. But rain on the day of the election – and notably on Election Day four years before – were clearly linked to lower turnout.
Source: adapted from Figure 2 of Fujiwara et al. (2016)