The Metro Idex: Rain or Shine

Wettest month in L.A. historically: January

Normal January rainfall in L.A. in Inches: 3.55

Inches of rain this January: 1:09

Years this century with no January rain: 3

Last time that occurred: 1976.

Rainfall since last July 1, In inches: 2.47

Inches of rain in the same period last year: 14.71

Percentage of L.A. water that originates elsewhere: 85%

Length in miles of Los Angeles Aqueduct from the Eastern Sierra: 338

Inches of fresh Sierra snow needed for an inch of L.A. water: 10 to 12.

Current water content of snowpack at Mammoth Mountain, in Inches: 17.6

Year that once- navigable Owens Lake went dry due to L.A. diversions: 1926.

Average number of clear January days in L.A.: 14.3

Average number of clear January days in San Francisco: 8.6

Average number of rainy January days in L.A.: 5.8

Average number of rainy January days in San Francisco: 10.7

Source: Los Angeles Department of Water and Power; “Weather of U.S. Cities”