It’s official: This week, San Francisco surpassed what’s normal for the water year, and the rainy season isn’t over yet. The city measures 23.65 inches of rain on average in a water year, which runs from October 1 to September 30. After a round of light showers on Monday, the downtown gauge’s water-year total hit 23.69 inches. With more unsettled weather in the forecast, that number is bound to inch up even more in April and May, before holding steady through the summer months. While this season has stood out in many people’s minds as noteworthy and painstakingly rainy, “it’s just a normal year,” said Jan Null, a consulting meteorologist with Golden Gate Weather Services.