Another round of afternoon downpours is predicted for today, and weather experts are saying this is typical for October.
The skies really opened up Monday with the Instituto Meteorológico Nacional reporting totals of 50 millimeters (2 inches) or more in many areas.
The lights went out in a section of Escazú due to lighting strikes, residents there said.
A compounding factor Monday night was fog that began to gather after suppertime and gave the lighted streets a Londonish look.
The heaviest rain is predicted for Guanacaste today, also the northern part of the Central Valley and the northern zone.
More fog is predicted for tonight.
In a 7 p.m. bulletin, the weather institute predicted more rain overnight on the Caribbean coast.