National City (CA) Weather and Climate: A Comprehensive Guide
The weather in National City sees moderate temperature fluctuations over the course of a year.
Temperatures can be warm at the high end
to roughly pleasant at the low end.
The city has a dry climate with very low precipitation levels.
Let's now guide you through the climate details for a complete overview.
Average maximum day and minimum night temperature
The weather in National City changes moderately throughout the year, offering enough variation to appreciate each season. On average, daytime temperatures range from a comfortable 27°C in September to a pleasant 19°C in January.
Nighttime temperatures can drop, with average lows reaching 9°C in January. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
National City sits in an arid zone with minimal moisture, averaging 227 mm of rainfall per year. The seasons in National City, bring significant changes in precipitation. The wettest month, December, receives moderate rainfall, with an average of 62 mm of precipitation. This rainfall is distributed across 7 rainy days. In contrast, the driest month, June, experiences much less rainfall, totaling 0.2 mm over 0 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our National City Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
National City enjoys sunny spells year-round. July sees up to 10.1 hours of daily sunshine, perfect for a sunny trip. February, the least sunny month, still offers a generous 7.7 hours of sun despite this cloudier time of the year. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average humidity
The relative humidity is high throughout the year in National City.
The city experiences its highest humidity in July, reaching 75%. In January, the humidity drops to its lowest level at 64%. Explore our detailed page on humidity levels for further details.
Relative humidity over the year
almost clear and no rain broken clouds and no rain almost clear and no rainForecast for National City (CA)
4 m/s
4 m/s
4 m/s
The best time of year to visit National City in the United States of America
During the months of January, February, March, April, May, June, July, October and November you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
The hottest season / summer takes place in July, August, September and October.
September has an average maximum temperature of 27°C and is the warmest month of the year.
The coldest month is December with an average maximum temperature of 19°C.
December tops the wettest month list with 62 mm of rainfall.
June is the driest month with 0 mm of precipitation.
July is the sunniest month with an average of 304 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
