Historical weather data, all-time temperature records, and monthly climate averages for Norwalk, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Norwalk sits in the sweet spot of spring — expect a pleasant 71° high and 51° low on average. There's only a 13% chance of rain, though the date has seen some wild swings: a scorching 105° back in 1989 and a chilly 41° low in 1955.
Norwalk's weather has real teeth at the extremes — the all-time high hit 111° on September 27, 2010, while the coldest recorded day bottomed out at 25° on January 13, 1963. A single January storm in 1956 dropped 5.02 inches of rain in one day, which still stands as the wettest on record.
Norwalk enjoys a classic Southern California climate with remarkably mild year-round temperatures — highs never dip below 66° even in the dead of winter and peak around 85° during the warmest week in early September. If you're hoping to avoid rain, summer is your best bet; February is the wettest stretch, averaging nearly 0.78 inches in a single week.