Our Proprietary 10-Day Forecast

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Current warnings over Jefferson, Oregon
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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 Jefferson, Oregon 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 Jefferson, Oregon 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 Marion County, OR

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 Jefferson, Oregon

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 Jefferson, OR 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 Jefferson, OR

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 Jefferson, OR, 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 Jefferson, Oregon

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 Marion County, Oregon

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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  • 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.
 
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Climate Summary
(made with AI, use with caution)
Jefferson, Oregon Climate Summary

General Climate

    •   Temperate oceanic climate with mild, wet winters and warm, dry summers.
    •   Influenced by the Pacific Ocean and the Cascade Mountains.

Temperature

    •   Average Annual Temperature

51.6°F (10.9°C)

    •   Average Winter Temperature (December-February)

38.3°F (3.5°C)

    •   Average Summer Temperature (June-August)

66.6°F (19.2°C)

    •   Record High Temperature

114°F (45.6°C)

    •   Record Low Temperature

-21°F (-29.4°C)

Precipitation

    •   Average Annual Precipitation

40.29 inches (102.3 cm)

    •   Average Number of Rainy Days per Year

144

    •   Average Snowfall per Year

10.2 inches (26 cm)

    •   Driest Month

July (0.43 inches)

    •   Wettest Month

December (6.34 inches)

Humidity

    •   Average Annual Humidity

72%

    •   Average Relative Humidity in Winter

80%

    •   Average Relative Humidity in Summer

60%

Wind

    •   Average Wind Speed

8.9 mph (14.3 km/h)

    •   Prevailing Wind Direction

West-southwest

Other Climate Features

    •   Fog

Common in the mornings during spring and fall.

    •   Thunderstorms

Infrequent, but can occur during the summer months.

    •   Drought

Occasional, especially during the summer.

    •   Wildfires

A risk during the dry season (July-September).

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

    •   Jefferson is located within the Willamette Valley, renowned for its fertile soil and diverse plant life.

    •   The area is home to numerous bird species, including the endangered Oregon spotted frog.

    •   The nearby Santiam River provides habitat for salmon, steelhead, and other aquatic life.

Science

    •   Jefferson is the birthplace of Linus Pauling, a Nobel Prize-winning chemist who made significant contributions to quantum mechanics and molecular biology.

    •   The city is home to the Jefferson Science Center, which offers educational programs and exhibits on science and technology.

Personalities

    •   The town was named after Thomas Jefferson, the third President of the United States.

    •   Jefferson was once a major hub for the Oregon Trail, with travelers seeking supplies and rest before continuing their westward journey.

    •   In the 19th century, Jefferson was home to several prominent figures, including pioneer Daniel Boone and missionary Jason Lee.

Tourist Attractions
1. Willamette Valley Vineyards: Jefferson is located in the heart of the Willamette Valley, which is renowned for its world-class vineyards and wineries. Visitors can enjoy tours, tastings, and scenic drives through the vineyards, and sample some of the region's finest wines.

2. Santiam River: The Santiam River flows through Jefferson and offers a variety of recreational opportunities, including fishing, kayaking, and rafting. Visitors can also enjoy hiking or biking along the riverbanks, or simply relax and enjoy the scenery.

3. Jefferson Historical Museum: The Jefferson Historical Museum is a great place to learn about the history of Jefferson and the surrounding area. The museum features exhibits on the town's early settlers, the logging industry, and the agricultural heritage of the Willamette Valley.

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