Our Proprietary 10-Day Forecast

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Current warnings over Grand Junction, Colorado
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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 Grand Junction, Colorado 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 Grand Junction, Colorado 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 Mesa County, CO

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 Grand Junction, Colorado

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 Grand Junction, CO 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 Grand Junction, CO

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 Grand Junction, CO, 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 Grand Junction, Colorado

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 Mesa County, Colorado

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.
 
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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.
 
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Climate Summary
(made with AI, use with caution)
Grand Junction, Colorado Climate Summary

General Climate


Grand Junction, Colorado, experiences a semi-arid climate, characterized by hot, dry summers and mild winters. The city receives an average of 11 inches of precipitation annually, with most of it falling during the spring and summer months. Grand Junction is located in a high desert region, and the lack of humidity makes the summer heat more bearable.

Temperature


The average temperature in Grand Junction is 53.8°F (12.1°C). The hottest month is July, with an average high of 94°F (34.4°C) and an average low of 64°F (17.8°C). The coldest month is January, with an average high of 39°F (3.9°C) and an average low of 20°F (-6.7°C).

Precipitation


Grand Junction receives an average of 11.1 inches (282 mm) of precipitation annually. The wettest month is May, with an average of 1.8 inches (46 mm) of precipitation. The driest month is October, with an average of 0.4 inches (10 mm) of precipitation. Snowfall is relatively light in Grand Junction, averaging 18.4 inches (46.7 cm) per year.

Sunshine


Grand Junction is known for its sunny climate, with an average of 300 sunny days per year. The sunniest month is July, with an average of 13 hours of sunshine per day. The cloudiest month is December, with an average of 7 hours of sunshine per day.

Wind


Grand Junction is located in a windy area, with an average wind speed of 12 mph (19 km/h). The windiest month is March, with an average wind speed of 14 mph (23 km/h). The calmest month is August, with an average wind speed of 10 mph (16 km/h).

Climate Change


Like many other regions, Grand Junction is experiencing the effects of climate change. The average temperature has increased by about 2°F (1.1°C) over the past century, and the number of days with extreme heat has increased. The city is also experiencing more frequent and severe droughts, which can lead to water shortages and wildfires.

Overall, Grand Junction has a mild climate with hot, dry summers and mild winters. The city receives an average of 11 inches of precipitation annually, and it is known for its sunny climate and windy conditions. Climate change is impacting Grand Junction, leading to increased temperatures, more frequent droughts, and more severe wildfires.

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

    •   Grand Junction is situated at the confluence of the Colorado and Gunnison Rivers, creating a diverse riparian ecosystem.

    •   The city is home to the Colorado National Monument, a 20,000-acre sandstone canyon with towering monoliths and ancient petroglyphs.

    •   The Grand Valley is a major agricultural region, known for its peaches, grapes, and alfalfa.

Science

    •   Grand Junction is the site of the Rocky Mountain Biological Laboratory, a renowned research institution focused on ecology and conservation.

    •   The city is home to the Western Colorado Center for the Arts, which features exhibits on local natural history and science.

Personalities

    •   John Wesley Powell, the first explorer to navigate the Colorado River through the Grand Canyon, camped near Grand Junction in 1869.

    •   Dr. Benjamin Franklin Adams, a prominent physician and naturalist, established the Rocky Mountain Biological Laboratory in 1928.

    •   Dr. Frank Craighead Jr., a renowned wildlife biologist, conducted groundbreaking research on grizzly bears in the Grand Valley.

Tourist Attractions
1. Colorado National Monument: This stunning park offers breathtaking views of sheer-walled canyons, towering monoliths, and vibrant desert landscapes. With hiking trails, scenic drives, and camping opportunities, it's a must-visit for outdoor enthusiasts.

2. Grand Junction Botanical Gardens: Escape into a tranquil oasis with a visit to these beautiful botanical gardens. Featuring a diverse collection of plants, including roses, succulents, and native wildflowers, the gardens provide a relaxing and educational experience.

3. Museum of Western Colorado: Delve into the rich history and culture of the American West at this captivating museum. Explore exhibits on Native American heritage, mining, ranching, and the region's role in the westward expansion.

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