See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
20°
Mostly Cloudy
Feels Like: 25°
Min: 20°
Max: 26°
The next few hours will be overcast, with today reaching 21°C and dropping to 21°C. The coming days will be mostly clear
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:37
Sunrise
18:47
Sunset
Moon
Waxing Crescent
12:09
Moonrise
21:21
Moonset
Daily Forecast
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Air Quality Data Available
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UV Index
Humidity
Weather in National City today, September 16, 2026
National City stays under cloudy skies on September 16, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open. The first half of the day looks overcast, as cloud amounts reach about 100% around 02:00. Brighter weather, if it comes, waits until later.
Temperatures climb from an overnight low near 20°C toward a daytime high of about 26°C. The air stays humid, with relative humidity between 67% and 86% and the peak around 11:00. Airflow remains manageable, reaching about 5.4 km/h around 19:00.
Afternoon skies stay clogged, peaking close to 100% near 12:00. The grey theme continues rather than clearing out. Visibility holds near 16.1 km, though it can fall to 15.3 km. Sunrise is at 06:37 and sunset at 18:47, giving 12 hours 9 minutes of sunlight today.
The practical takeaway for National City on September 16, 2026 is a cloudy day that stays usable, just not particularly bright, around 26°C.
Frequently asked questions about weather in National City
How warm does it get in National City?
The warmest month in National City is August, with average high temperatures of 28°C. The average temperature during this period is around 23°C.
How cold does it get in National City?
The coldest month in National City is January, with average low temperatures of 9°C. The average temperature during this period is around 13°C.
What is the wettest time of year in National City?
The wettest month in National City is March, with an average of 67mm of precipitation.
What is the driest time of year in National City?
The driest month in National City is June, with an average of 2mm of precipitation.
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