Marengo, IA 52301 Weather

Iowa County2:53 PM CDT41.79°N, 92.07°W

Current conditions

Clear
66°
Clear
Feels like 66°
High 71°·Low 46°
WindSE 11 mph
Humidity40%
Dew point41°
Pressure30.33 inHg
Visibility10 mi
Cloud cover1%
UV index3 Moderate
Sunrise7:27 AM
Sunset6:21 PM

Observed at Cedar Rapids Airport · 1 hr ago

Forecast

10-day

  • This Afternoon

    Sunny. High near 71, with temperatures falling to around 69 in the afternoon. Southeast wind around 5 mph.

  • Tonight

    Mostly clear. Low around 46, with temperatures rising to around 48 overnight. Southeast wind 0 to 5 mph.

  • Wednesday

    Mostly sunny. High near 74, with temperatures falling to around 71 in the afternoon. South wind 0 to 5 mph.

National Weather Service forecast updated 3 hrs ago.

Hourly

Hourly forecast
  1. Now Sunny 69°
  2. 3 PM Sunny 70°
  3. 4 PM Sunny 71°
  4. 5 PM Sunny 69°
  5. 6 PM Clear 64°
  6. 7 PM Clear 59°
  7. 8 PM Clear 58°
  8. 9 PM Clear 56°
  9. 10 PM Clear 55°
  10. 11 PM Clear 53°
  11. Wed12 AM Clear 52°
  12. 1 AM Clear 50°
  13. 2 AM Clear 50°
  14. 3 AM Clear 49°
  15. 4 AM Mostly Clear 48°
  16. 5 AM Mostly Clear 48°
  17. 6 AM Mostly Sunny 48°
  18. 7 AM Mostly Sunny 47°
  19. 8 AM Mostly Sunny 48°
  20. 9 AM Sunny 52°
  21. 10 AM Sunny 57°
  22. 11 AM Sunny 62°
  23. 12 PM Mostly Sunny 66°
  24. 1 PM Sunny 70°

10-day forecast

Details
  1. TodayOct 20 Sunny Sunny46°71°
  2. WedOct 21 Mostly Sunny Mostly Sunny48°74°
  3. ThuOct 22 Sunny Sunny50°75°
  4. FriOct 23 Sunny Sunny54°72°
  5. SatOct 24 Partly Sunny Partly Sunny54°73°
  6. SunOct 25 Partly Sunny Partly Sunny50°71°
  7. MonOct 26 Mostly Sunny then Slight Chance Rain Showers Mostly Sunny then Slight Chance Rain Showers16%45°65°
  8. TueOct 27 Cloudy Cloudy46°57°
  9. WedOct 28 Cloudy Cloudy0.09 in43°54°
  10. ThuOct 29 Sunny Sunny39°53°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

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Weather news near Marengo

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Air quality

35
Good
Fine particles (PM2.5)

Air quality is satisfactory, and air pollution poses little or no risk.

Forecast

  • TueGood (49)

Iowa City, IA reporting area · 53 min ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:27 AM
Sunset 6:21 PM
Daylight 10 h 53 min (−2 min 40 s tomorrow)
Waxing Gibbous · 71% lit
Moonrise 3:41 PM Moonset 1:21 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low60° / 38°
Record high84° (1953)
Record low19° (1930)
Wettest1.97 in (1934)
Yesterday68° / 39°
Month to date1.67 in (normal 1.86 in)

Cedar Rapids Area, records since 1893. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in DVN, issued 8 hrs ago

Key Messages

- Above normal temperatures are expected to continue this week and a 55% chance of continuing through the end of October.

Short Term

Issued at 148 AM CDT Tue Oct 20 2026

A shortwave is visible in water vapor imagery just to our south, which has left a few lingering mid to high clouds over the area. However, these clouds have had little impact on radiational cooling, with much of the area already dropping into the low to mid 40s, though cooler temperatures may be possible in poor drainage areas. Despite the cool start to the day, today will be yet another day basking under the influence of high pressure. Winds will be weak but could support deep mixing, as was observed yesterday. If this happens, temperatures could be a degree or two warmer than the current forecast, which is in the low 70s.

Another shortwave will make its way along the edge of the ridge Wednesday, though any impacts will be limited once more to an increase in cloud cover due to weakening forcing and dry low levels. Otherwise, the forecast remains quite similar to today, if not a couple degrees warmer, as we continue in this pattern of pleasant fall weather.

Long Term

Issued at 148 AM CDT Tue Oct 20 2026

By Thursday, ridge amplification will be underway. The high pressure center will shift southward over the Great Lakes. As a result, highs in the mid 60s to low 70s are expected. Occasional cloud chances each day may help temper the gradual 1-2 degree increase each day. However, while above normal temperatures are expected to continue through the weekend, a warm and dry but dreary day may be in store for at least part of the weekend as warm conveyor belt processes ahead of an approaching shortwave trough may lead to increased cloud cover.

However, there is sizable uncertainty regarding whether this shortwave trough will impact the CWA and if so, when that would occur. Guidance continues to be divided on the track and timing of this trough, with the majority of models and ensembles favoring a slower track with any impacts arriving Monday or later. The exception to this is the GEFS and GFS, which favor a quicker progression with the trough reaching the forecast area by Sunday. As a result, while it appears likely that above normal temperatures will continue, there is low confidence on whether we receive measurable precipitation or continue with this stretch of dry weather.

Aviation

Issued at 619 AM CDT Tue Oct 20 2026

Brief MVFR vsbys are possible at MLI prior to 14z along the Rock river valley. Otherwise, VFR conditions will prevail through the period, with light southeast wind under 7kts.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.