Our Proprietary 10-Day Forecast

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Current warnings over East Helena, Montana
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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 East Helena, Montana 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 East Helena, Montana 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 Lewis and Clark County, MT

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 East Helena, Montana

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 East Helena, MT 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 East Helena, MT

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 East Helena, MT, 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 East Helena, Montana

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 Lewis and Clark County, Montana

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)
East Helena, Montana Climate Summary

General Climate


    •   Semi-arid steppe climate with warm, dry summers and cold, snowy winters.
    •   Continental influence with large temperature fluctuations.

Temperature


    •   Average annual temperature: 44.9°F (7.2°C)
    •   Average summer temperature (June-August): 67.6°F (19.8°C)
    •   Average winter temperature (December-February): 24.5°F (-4.2°C)
    •   Record high temperature: 106°F (41°C)
    •   Record low temperature: -39°F (-39°C)

Precipitation


    •   Average annual precipitation: 13.3 inches (338 mm)
    •   Most precipitation falls during May and June
    •   Snowfall: Average annual snowfall of 42.6 inches (108 cm)

Humidity


    •   Relatively low humidity year-round
    •   Average relative humidity: 56%

Wind


    •   Prevailing wind direction: West-northwest
    •   Average wind speed: 9.5 mph (15.3 km/h)

Sunshine


    •   High number of sunshine hours
    •   Average annual sunshine: 3,068 hours

Other Climate Features


    •   Chinook winds: Warm, dry winds that can raise temperatures rapidly during winter.
    •   Thunderstorms: Common in the summer months, especially in the afternoons.
    •   Hail: Occasional hailstorms can occur during the summer.
    •   Fog: Rare, but can occur in the early morning hours.

Climate Change Impacts


    •   Rising temperatures: Average temperatures have increased by 2.5°F (1.4°C) since 1970.
    •   Changes in precipitation patterns: Precipitation is becoming more variable, with more frequent and intense storms.
    •   Increased wildfire risk: Drier conditions and warmer temperatures have increased the risk of wildfires.

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

    •   East Helena is home to the Missouri River, which provides a critical habitat for numerous fish species, waterfowl, and other wildlife.

    •   The area was once a vast prairie ecosystem, with abundant bison, pronghorn antelope, and wolves.

Science

    •   The city is the site of the former ASARCO copper smelter, which operated from 1888 to 2001. The smelter's legacy includes significant environmental contamination, which has been the subject of ongoing scientific research and remediation efforts.

    •   East Helena is also home to the Montana Bureau of Mines and Geology, which conducts research on the state's mineral resources and geological hazards.

Personalities

    •   Thomas Cruse, a prominent geologist and mining engineer, played a key role in the development of the ASARCO smelter.

    •   Dr. Alice Hamilton, a pioneering industrial hygienist, conducted groundbreaking research on the health effects of lead poisoning among workers at the smelter.

    •   Mary Ronan, a renowned Native American artist, was born in East Helena and her work often depicted the traditional life of the Blackfeet people.

Tourist Attractions
1.Missouri Headwaters State Park

This park is home to the source of the Missouri River, the longest river in North America. Visitors can explore the park's hiking trails, picnic areas, and fishing spots.

2.East Helena Smelter Historic District

This district is a reminder of East Helena's industrial past. Visitors can tour the smelter, which was once one of the largest in the world, and learn about the history of mining and smelting in the area.

3.Gates of the Mountains Wilderness Area

This wilderness area is located just a short drive from East Helena. Visitors can hike, camp, and fish in this beautiful area, which is home to towering mountains, pristine lakes, and abundant wildlife.

Nearby Cities:

Montana City, MT
Helena, MTClancy, MT
Missoula, MT
Great Falls, MTBozeman, MT
Butte-Silver Bow, MTButte, MT
Anaconda, MTBelgrade, MT
Livingston, MTLewistown, MT
Hamilton, MTDillon, MT
Lolo, MT