Monmouth, IL Weather

Warren County8:26 AM CDT40.91°N, 90.65°WElevation 761 ft

Current conditions

Partly Sunny
53°
Partly Sunny
Feels like 53°
High 75°·Low 51°
WindSE 5 mph gusts 15 mph
Humidity77%
Dew point46°
Cloud cover63%
UV index0 Low
Sunrise7:25 AM
Sunset6:10 PM

Forecast for this hour (no station report in the last two hours)

Forecast

10-day

  • Saturday

    Mostly sunny. High near 75, with temperatures falling to around 72 in the afternoon. South wind 5 to 10 mph.

  • Saturday Night

    Partly cloudy, with a low around 51. South wind around 5 mph.

  • Sunday

    Mostly sunny, with a high near 77. South wind 0 to 5 mph.

National Weather Service forecast updated 6 hrs ago.

Hourly

Hourly forecast
  1. Now Partly Sunny 53°
  2. 9 AM Partly Sunny 56°
  3. 10 AM Partly Sunny 61°
  4. 11 AM Partly Sunny 65°
  5. 12 PM Mostly Sunny 69°
  6. 1 PM Mostly Sunny 72°
  7. 2 PM Mostly Sunny 73°
  8. 3 PM Sunny 73°
  9. 4 PM Sunny 74°
  10. 5 PM Sunny 72°
  11. 6 PM Mostly Clear 68°
  12. 7 PM Partly Cloudy 64°
  13. 8 PM Partly Cloudy 62°
  14. 9 PM Mostly Clear 60°
  15. 10 PM Partly Cloudy 59°
  16. 11 PM Partly Cloudy 58°
  17. Sun12 AM Partly Cloudy 57°
  18. 1 AM Partly Cloudy 55°
  19. 2 AM Mostly Clear 54°
  20. 3 AM Mostly Clear 53°
  21. 4 AM Partly Cloudy 53°
  22. 5 AM Partly Cloudy 52°
  23. 6 AM Mostly Sunny 52°
  24. 7 AM Mostly Sunny 51°

10-day forecast

Details
  1. TonightOct 23 Partly Cloudy Partly Cloudy52°
  2. TodayOct 24 Mostly Sunny Mostly Sunny51°75°
  3. SunOct 25 Mostly Sunny Mostly Sunny52°77°
  4. MonOct 26 Partly Sunny Partly Sunny50°73°
  5. TueOct 27 Mostly Cloudy Mostly Cloudy54°71°
  6. WedOct 28 Slight Chance Rain Showers Slight Chance Rain Showers15%52°74°
  7. ThuOct 29 Mostly Sunny Mostly Sunny17%50°71°
  8. FriOct 30 Chance Rain Showers Chance Rain Showers25%70°
  9. SatOct 31 Cloudy Cloudy0.05 in58°75°
  10. SunNov 1 Heavy rain Heavy rain0.95 in56°66°

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

Radar

Full map
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Weather news near Monmouth

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Air quality

47
Good
Fine particles (PM2.5)

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

Forecast

  • SatModerate
  • SunModerate
  • MonModerate

Rock Island-Moline, IL reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:25 AM
Sunset 6:10 PM
Daylight 10 h 45 min (−2 min 32 s tomorrow)
Waxing Gibbous · 97% lit
Moonrise 5:02 PM Moonset 5:40 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low59° / 39°
Month to date4.20 in (normal 2.12 in)

Galesburg, records since 1896. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in DVN, issued 2 hrs ago

Key Messages

- Above normal temperatures and mostly dry conditions are forecast into early next week with slightly cooler temperatures and isolated showers possible towards the middle to end of next week.

Short Term

Issued at 1234 AM CDT Sat Oct 24 2026

Comfortable, above average temperatures are expected today with highs in the mid-70s as an upper-level ridge sits over the Mississippi River Valley. A weak cold front will move into northwestern Iowa and Minnesota, tightening the pressure gradient across the region. Southerly wind gusts up to 20 mph are possible (40-60% chance) late this morning into the afternoon hours north of I-80 in eastern Iowa.

The front is forecasted to reach eastern Iowa tonight. Dry low- to-mid-levels should prohibit precipitation development. Despite this, lingering clouds will cut into the radiational cooling with lows only dropping into the low-to-mid-50s. Heading into Sunday, the weak boundary stalls out with no dynamical support aloft, and without an air mass change, highs will once again climb in the mid-to-upper 70s.

Long Term

Issued at 1234 AM CDT Sat Oct 24 2026

Sunday Night-Tuesday...A shortwave trough over the Desert Southwest ejects to the northeast into the Northern Plains. A Front Range low across eastern Colorado is expected to deepen and track across the Central Plains into Minnesota Monday into Tuesday. This passage will wash out the weak front draped across Iowa and northern Illinois as winds shift from easterly back to southerly. Mid-level moisture advection could be sufficient enough to support isolated rain showers (10-20% chance) Monday night into Tuesday.

Tuesday Night-Wednesday...Another shortwave trough swings into the Northern Plains Tuesday night. Surface cyclogenesis will occur quickly in the wake of the previous low pressure, but the fast propagation speed of the trough is expected to limit significant pressure falls. By Wednesday evening, the new low pressure moves across Minnesota into southern Canada, dragging a cold front southeastward into eastern Iowa and northern Illinois. PoPs on Wednesday again will be isolated (10-30%) due to the lack of low-level moisture return.

Thursday-Friday...In wake of Wednesday's cold front, westerly flow could advect in some cooler air with highs falling back in the 60s and low 70s, still above average for the end of October. This will not last long though as high pressure over the Ohio River Valley shifts our winds back out of the south Thursday night, keeping small PoPs (20-40%) around late week.

Aviation

Issued at 609 AM CDT Sat Oct 24 2026

Similar weather conditions to yesterday will be seen today, with passing high clouds and very good visibility seen through the period. Winds today will be south to southeast around 7 to 10 kts, with some gusts over northeast Iowa up to 20 kts this afternoon. Decreasing winds will be seen towards and after sunset tonight, remaining south to southeast.

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 4Conservative index and reflects what the press published. Terms of use.