Historical weather data, all-time temperature records, and monthly climate averages for National City, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in National City tends to be mild and mostly dry — historically, the high lands around 66° with just a 17% chance of rain. It's a date of contrasts in the record books, though: temperatures have swung from a chilly 37° in 1945 all the way to a scorching 99° back in 1989.
National City's all-time extremes tell the story of a place that rarely gets pushed to its limits — but occasionally does. The hottest day on record hit 108° on September 27, 1963, the coldest bottomed out at 24° on January 14 of that same year, and the wettest single day ever brought 3.67 inches of rain on Christmas Eve, 1940.
National City is famously consistent, with monthly average highs ranging only from 64° in early January to 76° in early September — one of the narrowest seasonal swings anywhere in the country. If you're chasing warmth, late summer is your window; if you want to avoid rain, skip late January through early February when weekly precipitation averages peak around half an inch.