Our Proprietary 10-Day Forecast

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Current warnings over Crestline, 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 Crestline, 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 Crestline, 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 San Bernardino 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 Crestline, 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 Crestline, 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 Crestline, 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 Crestline, 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 Crestline, 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 San Bernardino 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)
Climate Summary for Crestline, CA

Location

Crestline is a town located in the San Bernardino Mountains of Southern California, approximately 75 miles northeast of Los Angeles.

Climate Type

Crestline has a Mediterranean climate, characterized by warm, dry summers and mild, wet winters.

Average Temperatures

    •   Summer

Average high temperatures in July and August are in the mid-80s Fahrenheit (29-30°C). Average low temperatures are in the mid-50s Fahrenheit (13-14°C).

    •   Winter

Average high temperatures in December and January are in the mid-40s Fahrenheit (7-8°C). Average low temperatures are in the mid-20s Fahrenheit (-3 to -4°C).

Precipitation

    •   Average Annual Precipitation

Crestline receives an average of 35 inches (89 cm) of precipitation per year.

    •   Rainy Season

Most of the precipitation falls during the winter months, from November to April.

    •   Snowfall

Crestline receives an average of 10 inches (25 cm) of snow per year. Snowfall is most common in January and February.

Sunshine

Crestline enjoys an average of 280 sunny days per year.

Humidity

Humidity levels in Crestline are generally low, averaging around 40%.

Wind

The prevailing wind direction in Crestline is from the west. Wind speeds are typically moderate, averaging around 10 miles per hour (16 km/h).

Overall

Crestline has a pleasant climate with warm, dry summers and mild, wet winters. The town receives a moderate amount of precipitation, including some snowfall during the winter months. Crestline is a popular destination for outdoor recreation, including hiking, biking, and fishing.

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

    •   Crestline is nestled in the San Bernardino Mountains, renowned for its diverse flora and fauna.

    •   The area is home to over 100 species of birds, including the endangered California condor.

    •   The nearby San Bernardino National Forest boasts ancient Jeffrey pines and towering sugar pines.

Science

    •   In the 1950s, Crestline became a hub for astronomy and space exploration.

    •   The Mount Wilson Observatory, located nearby, played a pivotal role in early astronomical discoveries.

    •   The Jet Propulsion Laboratory, headquartered in nearby Pasadena, has launched numerous spacecraft to explore the solar system.

Personalities

    •   Astronomer Edwin Hubble, known for his discovery of the expanding universe, had a summer home in Crestline.

    •   Physicist Richard Feynman, a Nobel laureate, spent his childhood summers in the area.

    •   Naturalist John Muir, a prominent advocate for conservation, frequently visited Crestline and the surrounding mountains.

Tourist Attractions
1.Lake Gregory Regional Park:

A scenic park surrounding Lake Gregory, offering hiking trails, boating, fishing, and picnic areas.

2.Serrano Valley Preserve:

A 1,000-acre preserve with hiking trails, panoramic views, and opportunities for wildlife viewing.

3.Arrowhead Lake:

A picturesque lake located just north of Crestline, known for its boating, fishing, and hiking trails.

Nearby Cities:

Lake Arrowhead, CA
Muscoy, CAHighland, CA
San Bernardino, CARunning Springs, CA
Rialto, CAOak Hills, CA
Colton, CAHesperia, CA
Loma Linda, CABloomington, CA
Fontana, CARedlands, CA
Grand Terrace, CAMentone, CA
Highgrove, CASunnyslope, CA
Los Angeles, CA
San Diego, CALong Beach, CA
Anaheim, CASanta Ana, CA
Chula Vista, CAIrvine, CA
Oxnard, CAMoreno Valley, CA
Huntington Beach, CAGlendale, CA
Santa Clarita, CA