Marengo, IA Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Marengo, IA in one place.
Showers and thunderstorms. Cloudy, with a high near 59. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Local Weather Overview
This forecast page for Marengo, IA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 15, 2026 2:40 PM CDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Marengo, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 2:40 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Marengo
Wednesday looks like the warmest upcoming period in Marengo at 73 degrees F.
Friday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Friday at about 20 to 25 mph NW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 2:40 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KDVN
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers before 9pm. Mostly cloudy, with a low around 44. Northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
A slight chance of rain showers between 10am and 11am. Mostly cloudy, with a high near 51. Northwest wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 20%.
Widespread frost after 1am. Partly cloudy, with a low around 31. North wind 0 to 15 mph, with gusts as high as 30 mph.
Widespread frost before 9am. Sunny, with a high near 57.
Clear, with a low around 38.
Sunny, with a high near 65.
Mostly clear, with a low around 43.
Mostly sunny, with a high near 68.
Partly cloudy, with a low around 44.
Sunny, with a high near 71.
Mostly clear, with a low around 48.
Mostly sunny, with a high near 73.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 52.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 15
|
Showers And Thunderstorms
|
59°F |
5 to 10 mph
NE
|
|
Tonight
Oct 15
|
Chance Rain Showers then Mostly Cloudy
|
44°F |
15 to 20 mph
NW
|
|
Friday
Oct 16
|
Slight Chance Rain Showers then Mostly Cloudy
|
51°F |
20 to 25 mph
NW
|
|
Friday Night
Oct 16
|
Partly Cloudy then Widespread Frost
|
31°F |
0 to 15 mph
N
|
|
Saturday
Oct 17
|
Widespread Frost then Sunny
|
57°F |
0 to 10 mph
SW
|
|
Saturday Night
Oct 17
|
Clear
|
38°F |
5 to 10 mph
S
|
|
Sunday
Oct 18
|
Sunny
|
65°F |
10 to 15 mph
S
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
43°F |
5 to 10 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
68°F |
0 to 5 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
44°F |
0 to 5 mph
S
|
|
Tuesday
Oct 20
|
Sunny
|
71°F |
0 to 5 mph
SE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
48°F |
5 mph
SE
|
|
Wednesday
Oct 21
|
Mostly Sunny
|
73°F |
5 to 10 mph
S
|
|
Wednesday Night
Oct 21
|
Partly Cloudy then Slight Chance Rain Showers
|
52°F |
5 to 10 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Marengo.
