See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
26°
Mostly Clear
Feels Like: 32°
Min: 26°
Max: 35°
The next few hours will be clear, with today reaching 35°C and dropping to 27°C. The coming days will be mostly clear throughout the day.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:10
Sunrise
19:20
Sunset
Moon
Waxing Crescent
11:30
Moonrise
21:22
Moonset
Daily Forecast
Today
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Air Quality Data Available
Upgrade to access real-time air quality data for Pasadena.
Resources
UV Index
Humidity
Weather in Pasadena today, September 15, 2026
Conditions in Pasadena on September 15, 2026 favour clear skies, so the day opens with a fine, sunny outlook. Any interruptions to the blue should be brief rather than lasting. The first half of the day looks overcast, as cloud amounts reach about 87% around 04:00. Brighter weather, if it comes, waits until later.
The day peaks near 35°C and cools toward 26°C. The air stays humid, with relative humidity between 46% and 92% and the peak around 07:00. A lighter breeze peaks around 16:00 near 5.2 km/h.
The afternoon keeps an overcast feel, as cloud reaches about 88% around 18:00. Outdoor plans may still want a flexible backup. Expect visibility near 15.8 km, with poorer spells close to 14.2 km. The sun rises at 07:10 and sets at 19:20, for a total of 12 hours 10 minutes of sunlight today.
The practical takeaway for Pasadena is a bright September 15, 2026, ideal for outdoor errands before temperatures ease from about 35°C.
Frequently asked questions about weather in Pasadena
How warm does it get in Pasadena?
The warmest month in Pasadena is August, with average high temperatures of 33°C. The average temperature during this period is around 29°C.
How cold does it get in Pasadena?
The coldest month in Pasadena is January, with average low temperatures of 8°C. The average temperature during this period is around 12°C.
What is the wettest time of year in Pasadena?
The wettest month in Pasadena is May, with an average of 173mm of precipitation.
What is the driest time of year in Pasadena?
The driest month in Pasadena is February, with an average of 74mm of precipitation.