What is today's weather forecast for Marengo, IA?

Today's forecast for Marengo shows a high of 72 degrees and a low of 54 degrees Fahrenheit. Sunny, with a high near 72.

What is the 7-day weather forecast for Marengo, IA?

The 7-day forecast for Marengo shows highs from 45 to 72 degrees and lows from 28 to 54 degrees Fahrenheit. Expect precipitation on 3 days with chances of 20% or higher.

Will it rain in Marengo, IA this week?

Yes, rain is possible in Marengo this week. Precipitation chances: Monday (60% chance), Wednesday (40% chance), Thursday (50% chance).

How accurate is the Marengo weather forecast?

WeatherForYou provides highly accurate Marengo forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Marengo, IA Weather Forecast and Current Conditions

Current Conditions From Nearby Station

Switch to Metric Units

38°F
Feels Like 38°F

Humidity 78% Dew Point 32°F Wind Calm Barometer N/A

Report from a MADIS/MESONET weather station 8.3 miles SSE of central Marengo
at 4:10 AM Fri, Nov 14, 2025

Point Forecast at a Glance

FriNov 14

SatNov 15

SunNov 16

MonNov 17

30%

TueNov 18

WedNov 19

ThuNov 20

50%

7-Day Temperature Trend

Week Ahead Summary

High temperatures drop from 72°F to a low of 45°F, then recover to 48°F by week's end. Some rain possible with at least 3 days showing precipitation chances of 20% or higher.

Climate Context

This week's forecast shows temperatures running 7°F above the historical average for November. Normal highs for this period are around 47°F with lows around 27°F.

This Date in Weather History

1986 - An early season cold wave set more than 200 records from the northwestern U.S. to the east coast over a seven day period. For some places it proved to be the coldest weather of the winter season.

Marengo, IA 7 Day Weather Forecast Details

Friday Nov 14

Day: Sunny, with a high near 72. South wind 5 to 10 mph, with gusts as high as 20 mph.

Night: Increasing clouds, with a low around 54. South wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 25 mph.

Saturday Nov 15

Day: Mostly cloudy, then gradually becoming sunny, with a high near 67. West wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

Night: Mostly clear, with a low around 33. Northwest wind 5 to 10 mph.

Sunday Nov 16

Day: Sunny, with a high near 52.

Night: Partly cloudy, with a low around 32.

Monday Nov 17

Day: A 30 percent chance of rain after noon. Partly sunny, with a high near 49.

Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 31. Chance of precipitation is 60%.

Tuesday Nov 18

Day: Mostly sunny, with a high near 45.

Night: Mostly cloudy, with a low around 28.

Wednesday Nov 19

Day: Mostly sunny, with a high near 47.

Night: A 40 percent chance of rain. Mostly cloudy, with a low around 34.

Thursday Nov 20

Day: A 50 percent chance of rain. Mostly cloudy, with a high near 48.

About Marengo, IA

Marengo is a city in and the county seat of Iowa County, Iowa, United States. It has served as the county seat since August 1845, even though it was not incorporated until July 1859. The population was 2,435 in the 2020 census, a decline from 2,535 in 2000.

Content from Wikipedia, licensed under CC BY-SA 3.0.

How We Provide Better Local Weather

Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

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