Our Proprietary 10-Day Forecast

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Current warnings over Pasadena, California
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<p>Warnings from F5Weather</a></div>

United States weather warnings are issued by various organizations under NOAA. Most from the National Weather Service, but also Storm Prediction Center and National Hurricane Center.

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Current radar over Pasadena, California red dot
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<p>Live radar from F5Weather</a></div>

Our radar is based off of US NEXRAD and Canadian weather radar sites through the quality controlled MRMS system. It compiles various sources for radar data and filters out erroneous returns such as sun spikes and ground clutter. We then colorize the precipitation based on our methods for determining precipitation type. Rain is in shades of green, mixed precipitation and freezing rain in shades of pink and snow is in shades of blue.

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Current satellite over Pasadena, California red dot
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<p>Live satellite from F5Weather</a></div>

Our satellite is from the GOES-16. It is color enhanced by using a geocolor terrain background during the day and black marble city lights at night. The daytime satellite data is Visible satellite imagery, and nighttime uses Infrared bands. The bluish clouds are fog and low cloud. The whiteest clouds are the coldest, highest cloud tops.

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Current surface weather map around Los Angeles County, CA

This surface map is from the HRRR computer model. It is a 1-hour forecast, updated hourly, which is a good estimate of the current surface conditions. This map shows the current high and low pressure centers, pressure isobar contours, wind streamlines and thickness contours. It also shows the currently depicted preciptiation estimates, although this should not be a substitute for actual live radar. The purple dashed contour is the 5400m thickness line, which is often a good proxy for the rain/snow line.

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Temperatures right now near Pasadena, California

This is the latest surface temperatures as depicted by the HRRR computer model, updated hourly. Although these are not actual observations, this model is a very good representation of current conditions as it factors in observations, terrain and physics to give you more detailed temperatures in areas that do not have reporting weather stations. For the latest reports at specific locations, like in Pasadena, CA please see our current conditions data on the left and right side of this page, or go to our current conditions page.

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Surface wind speed map over Pasadena, CA

This map shows the latest HRRR computer model winds. This depiction of the current wind directions and speeds is an estimate from the computer model. For actual observations in Pasadena, CA, see the current conditions data on the left and right side of this page, or go to our current conditions page.

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Regional 24 hour rainfall expected near Pasadena, California

This is a forecast of the amount of precipitation expected over the next 24 hours from the HRRR weather forecast model. This is only one forecast depiction, and you should check other models to get a better idea of what may happen. You can view this and other models in more detail on our main weather forecast maps page. There, you will also be able to look at forecasts beyond just 24 hours and look at forecasts out to as far as 16 days.

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Area snowfall accumulation expected around Los Angeles County, California

This is snowfall forecast, with amounts anticipated in the next 24 hours. This guidance is from the HRRR weather model. For more model forecasts out to 16 days, visit our main weather forecast maps page.

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These are Convective Outlooks from the Storm Prediction Center. Click to see Days 1-3 broken down into Tornado, Wind and Hail threats, as well as days 5-8 outlooks.

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Atlantic Hurricane and Tropical Storm Tracking Map
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<p>Hurricane Tracking from F5Weather</a></div>

Our hurricane tracking map monitors for any current or forecast tropical disturbances in the Atlantic. (See our Pacific Hurricane Tracker) Various hurricane models will draw a 'spaghetti plot' in the Atlantic Basin when a disturbance is forecast or exists, showing the system's forecast track. Once a storm has developed, the National Hurricane Center will forecast their official track. This will show up on the map along with the storm's current intensity, track and name. We will also plot some of the storm's vitals and of course the spaghetti plots from the models along with the NHC forecast track will give you an idea of where it's heading, and its forecast intensity with time.

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To view the latest computer models, visit f5wx.com for access to the weather maps and guidance that meteorologists use to make their forecasts.
 
Get access to:
  • European ECMWF HRES
  • American GFS
  • Canadian GDPS GEM
  • German DWD ICON
  • British MetOffice's UKMET Unified Model
  • American NAM
  • American HRRR
  • American NBM - National Blend of Models
  • GEFS, GEPS, MOGREPS & European Ensembles
  • Probabilities & Averages
  • 3-Ensemble Mean & more!
View Skew-T soundings, textual data tables for your location, and of course maps! Weather forecast maps of the basics like temperature, wind, pressure, humidity, dew point, cloud cover, simulated radar, travel weather, rainfall and snow are available. More advanced users can also get use out of our severe weather & tornado threat maps, as well as upper air & shear graphics.
 
See the latest forecast data as the models update.
 
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Climate Summary
(made with AI, use with caution)
Pasadena, California Climate Summary

General Climate

Pasadena, California has a Mediterranean climate, characterized by warm, dry summers and mild, wet winters. The city experiences an average of 14.8 inches of rain per year, most of which falls between November and April. Temperatures range from an average high of 86°F in August to an average low of 42°F in January.

Spring (March-May)

Spring in Pasadena is mild and pleasant, with average temperatures ranging from 55°F to 75°F. The days are typically sunny and dry, with occasional showers. The city's many parks and gardens are in full bloom during this time, making it a popular time to visit.

Summer (June-August)

Summer in Pasadena is hot and dry, with average temperatures ranging from 75°F to 95°F. The days are long and sunny, with little humidity. The city's many pools and beaches are popular places to cool off during the summer months.

Fall (September-November)

Fall in Pasadena is mild and sunny, with average temperatures ranging from 65°F to 80°F. The days are typically clear and dry, with occasional showers. The city's many parks and gardens are still in bloom during this time, making it a popular time to visit.

Winter (December-February)

Winter in Pasadena is mild and wet, with average temperatures ranging from 45°F to 60°F. The days are typically overcast and rainy, with occasional sunny spells. The city's many museums and cultural attractions are popular places to visit during the winter months.

Climate Change

Pasadena, like the rest of California, is experiencing the effects of climate change. The city's average temperature has increased by about 2°F since the late 19th century, and the number of days with extreme heat has also increased. The city is also experiencing more frequent and severe droughts.

Conclusion

Pasadena, California has a Mediterranean climate, with warm, dry summers and mild, wet winters. The city's climate is changing, however, and the city is experiencing more extreme weather events.

Facts & Historical Information
(made with AI, use with caution)
Natural History

    •   Pasadena is home to the Eaton Canyon Natural Area, a 190-acre canyon with diverse flora and fauna, including bobcats, coyotes, and over 150 bird species.

    •   The city's Arroyo Seco, a seasonal river, is a vital habitat for native plants and animals, including the endangered arroyo toad.

Science

    •   Pasadena is the birthplace of the Jet Propulsion Laboratory (JPL), a NASA center responsible for numerous space exploration missions, including the Voyager and Curiosity rovers.

    •   The California Institute of Technology (Caltech), located in Pasadena, is a world-renowned research university with a strong focus on science and engineering.

Personalities

    •   Charles Darwin's theory of evolution influenced the development of Pasadena's early scientific community, including the founding of Caltech.

    •   Albert Einstein lived in Pasadena from 1933 until his death in 1955 and made significant contributions to Caltech's physics department.

    •   The city has been home to numerous renowned scientists, including George Ellery Hale, who founded the Mount Wilson Observatory, and Linus Pauling, a Nobel Prize-winning chemist.

Tourist Attractions
1.Huntington Library, Art Museum, and Botanical Gardens:

A sprawling estate featuring a world-renowned library, art museum, and 120 acres of botanical gardens with diverse plant collections and stunning landscapes.

2.Norton Simon Museum:

An art museum showcasing a significant collection of European paintings, sculptures, and decorative arts from the Middle Ages to the 20th century, including works by Rembrandt, Degas, and Picasso.

3.Descanso Gardens:

A 150-acre botanical garden known for its spectacular rose garden, Japanese garden, and California native plant collection. It offers picturesque walking trails, a lake, and a Japanese teahouse for a tranquil escape.

Nearby Cities:

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Arcadia, CAGlendale, CA
South San Gabriel, CABelvedere, CA
Monrovia, CASouth El Monte, CA
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Long Beach, CABakersfield, CA
Anaheim, CASanta Ana, CA
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Irvine, CASan Bernardino, CA
Fontana, CAOxnard, CA
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