Our Proprietary 10-Day Forecast

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Current warnings over Marengo, Iowa
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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 Marengo, Iowa 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 Marengo, Iowa 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 Iowa County, IA

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 Marengo, Iowa

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 Marengo, IA 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 Marengo, IA

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 Marengo, IA, 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 Marengo, Iowa

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 Iowa County, Iowa

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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  • Canadian GDPS GEM
  • German DWD ICON
  • British MetOffice's UKMET Unified Model
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  • American HRRR
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  • 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.
 
F5Weather Maps

Climate Summary
(made with AI, use with caution)
Marengo, Iowa Climate Summary

General Climate

    •   Humid continental climate with warm, humid summers and cold, snowy winters.
    •   Average annual precipitation: 36.3 inches
    •   Average annual snowfall: 30.6 inches

Temperature

    •   Average annual temperature

49.1°F (9.5°C)

    •   Average summer temperature (June-August)

74.4°F (23.6°C)

    •   Average winter temperature (December-February)

22.4°F (-5.3°C)

    •   Record high temperature

110°F (43.3°C)

    •   Record low temperature

-31°F (-35°C)

Precipitation

    •   Average annual precipitation

36.3 inches (922 mm)

    •   Average monthly precipitation

3.0 inches (76 mm)

    •   Wettest month

May (4.1 inches)

    •   Driest month

February (1.7 inches)

Snowfall

    •   Average annual snowfall

30.6 inches (777 mm)

    •   Average monthly snowfall

2.5 inches (64 mm)

    •   Snowiest month

January (6.1 inches)

Other Climate Data

    •   Average annual sunshine

2,495 hours

    •   Average annual wind speed

10.6 mph (17.1 km/h)

    •   Average relative humidity

71%

Climate Extremes

    •   Highest recorded temperature

110°F (43.3°C) on July 19, 1936

    •   Lowest recorded temperature

-31°F (-35°C) on January 20, 1985

    •   Wettest year

2013 (52.08 inches)

    •   Driest year

1976 (18.59 inches)

    •   Snowiest year

2010-2011 (54.5 inches)

Climate Change Impacts

    •   Increasing temperatures

Average temperatures have risen by 1.5°F (0.8°C) since 1900.

    •   More extreme weather events

Increased frequency and intensity of heat waves, droughts, and heavy rainfall events.

    •   Changes in precipitation patterns

More precipitation falling as heavy downpours, leading to increased flooding.

    •   Shorter winters

Reduced snowfall and earlier snowmelt.

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

    •   Marengo is situated on the Iowa River, which was once a major transportation route for Native Americans and early settlers.

    •   The area surrounding Marengo is home to a diverse ecosystem, including forests, prairies, and wetlands.

    •   The Iowa River Valley is a migratory corridor for birds, and Marengo is a popular spot for birdwatching.

Science

    •   Marengo is the birthplace of James Van Allen, the physicist who discovered the Van Allen radiation belts.

    •   The Van Allen Science Center in Marengo is dedicated to educating the public about space science.

    •   Marengo is home to the Iowa Valley Community College, which offers a variety of science programs.

Personalities

    •   In addition to James Van Allen, Marengo has been home to other notable figures, including:

    •   John A. Kasson, a U.S. diplomat and politician

    •   John R. Mott, a Nobel Peace Prize laureate

    •   Carrie Chapman Catt, a women's suffrage leader

Tourist Attractions
1.Herbert Hoover National Historic Site

(West Branch, IA): The birthplace and presidential library of the 31st President of the United States, Herbert Hoover. Visitors can tour the Hoover family home, learn about Hoover's life and presidency, and explore the museum.

2.Amana Colonies

(Amana, IA): A historic communal society founded in the 1850s by German immigrants. Visitors can explore the seven villages that make up the Colonies, visit museums and shops, and learn about the unique history and culture of the Amana people.

3.Iowa Valley Scenic Byway

(Marengo, IA): A 100-mile scenic drive that follows the Iowa River through rolling hills, farmlands, and historic towns. Visitors can enjoy hiking, biking, fishing, and kayaking along the river, and stop at various historical and cultural attractions along the way.

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