Live Weather & Forecast

Weather in Monmouth

Q: What is the current weather in Monmouth?

Current conditions in Monmouth: Overcast, temperature 19°C, humidity 100%.

Q: What is the best time to visit Monmouth?

The best time to visit Monmouth is typically June – September. Warm, dry summers — ideal for outdoor activities.

Q: What are the GPS coordinates used for the weather forecast in Monmouth?

The weather forecast for Monmouth uses coordinates 40.9127, -90.6472.

Illinois, United States · Real-time conditions & 3-day outlook

19^°C

Feels like 19°C

67°F / Feels 67°F

Overcast

Monmouth, Illinois

🌞 Daytime

Updated: 2026-04-13 08:45

💧

Humidity

100%

💨

Wind

23 km/h SSW

🌬️

Wind Gust

33.6 km/h

🌡️

Pressure

1014 mb

👁️

Visibility

16 km

☀️

UV Index

0.4 (Low)

🌧️

Precipitation

0 mm

☁️

Cloud Cover

100%

💦

Dew Point

17.7°C

🌐

Wind Degree

207°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)

147.9 μg/m³

NO₂

1.9 μg/m³

O₃

79 μg/m³

SO₂

1 μg/m³

PM 2.5

4.3 μg/m³

PM 10

4.9 μg/m³

Weather Alerts 5

Met · Severe · Immediate

Flood Warning issued April 12 at 12:16PM CDT until April 17 at 7:00AM CDT by NWS Quad Cities IA IL

...The Flood Warning is extended for the following rivers in Illinois...Iowa... Mississippi River at Burlington affecting Henderson, Lee, Hancock and Des Moines Counties. Mississippi River at Gladstone LD18 affecting Henderson and Des Moines Counties. * WHAT...Minor flooding is occurring. * WHERE...Mississippi River at Gladstone LD18. * WHEN...From this morning to Friday morning. * ADDITIONA...

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. The next statement will be issued by Monday afternoon at 123...

Effective: 2026-04-12T12:16:00-05:00 · Expires: 2026-04-13T12:30:00-05:00

Met · Severe · Immediate

Flood Warning issued April 12 at 12:16PM CDT until April 17 at 7:00AM CDT by NWS Quad Cities IA IL

...The Flood Warning is extended for the following rivers in Illinois...Iowa... Mississippi River at Burlington affecting Henderson, Lee, Hancock and Des Moines Counties. Mississippi River at Gladstone LD18 affecting Henderson and Des Moines Counties. * WHAT...Minor flooding is occurring. * WHERE...Mississippi River at Burlington. * WHEN...From this morning to Friday morning. * IMPACTS...At...

Effective: 2026-04-12T12:16:00-05:00 · Expires: 2026-04-13T12:30:00-05:00

Met · Severe · Immediate

Flood Warning issued April 12 at 9:52PM CDT until April 17 at 7:00AM CDT by NWS Quad Cities IA IL

...The Flood Warning is extended for the following rivers in Illinois...Iowa... Mississippi River at Gladstone LD18 affecting Des Moines and Henderson Counties. Iowa River at Marengo affecting Benton and Iowa Counties. ...The Flood Warning continues for the following rivers in Iowa... Illinois... Iowa River at Oakville affecting Louisa County. Iowa River at Wapello affecting Louisa County. M...

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. The next statement will be issued bythis evening at 1100 PM CDT.

Effective: 2026-04-12T21:52:00-05:00 · Expires: 2026-04-13T22:00:00-05:00

Met · Severe · Immediate

Flood Warning issued April 12 at 9:52PM CDT until April 17 at 7:00PM CDT by NWS Quad Cities IA IL

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. The next statement will be issued bythis evening at 1100 PM CDT.

Effective: 2026-04-12T21:52:00-05:00 · Expires: 2026-04-13T22:00:00-05:00

Met · Severe · Immediate

Flood Warning issued April 12 at 9:07PM CDT by NWS Lincoln IL

...The Flood Warning continues for the following rivers in Illinois... Illinois River near Havana affecting Mason, Cass and Fulton Counties. Illinois River at Beardstown affecting Schuyler, Cass, Brown and Morgan Counties. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. * WHAT...Minor flooding is occurring and minor flooding i...

Caution is urged when walking near riverbanks. Persons with interests along this river need to remain aware of the latest forecasts and associated flood risk for their area. Stay tuned for further updates on this flooding situation. Additional information is available at www.weather.gov.

Effective: 2026-04-12T21:07:00-05:00 · Expires: 2026-04-13T13:15:00-05:00

Today's Hourly Forecast

24-hour breakdown for Monmouth, Illinois

12 AM

17°

Cloudy

💧 93% 💨 22 km/h

1 AM

17°

Clear

💧 91% 💨 22.7 km/h

2 AM

17°

Clear

💧 90% 💨 25.6 km/h

3 AM

17°

Clear

💧 90% 💨 24.8 km/h

4 AM

17°

Clear

💧 90% 💨 23 km/h

5 AM

17°

Clear

💧 92% 💨 20.5 km/h

6 AM

17°

Clear

💧 92% 💨 19.4 km/h

7 AM

18°

Cloudy

💧 93% 💨 20.2 km/h

8 AM

19°

Overcast

💧 100% 💨 23 km/h

9 AM

20°

Partly Cloudy

💧 92% 💨 19.4 km/h

10 AM

21°

Overcast

💧 91% 💨 20.5 km/h

11 AM

21°

Overcast

💧 90% 💨 25.2 km/h

12 PM

22°

Overcast

💧 88% 💨 27 km/h

1 PM

23°

Patchy light drizzle

💧 91% 💨 28.1 km/h 🌧️ 100%

2 PM

23°

Overcast

💧 85% 💨 31 km/h

3 PM

23°

Overcast

💧 83% 💨 29.2 km/h

4 PM

24°

Overcast

💧 82% 💨 29.2 km/h

5 PM

22°

Partly Cloudy

💧 81% 💨 29.9 km/h

6 PM

22°

Thundery outbreaks in nearby

💧 91% 💨 29.2 km/h

7 PM

21°

Overcast

💧 88% 💨 28.8 km/h

8 PM

21°

Overcast

💧 95% 💨 27.7 km/h

9 PM

21°

Overcast

💧 95% 💨 28.8 km/h

10 PM

21°

Overcast

💧 91% 💨 31.7 km/h

11 PM

21°

Overcast

💧 91% 💨 31.3 km/h

3-Day Forecast

Daily overview for Monmouth, Illinois

Today

Patchy rain nearby

24° / 17°

🌧️ 68% chance of rain

💧 Avg. humidity: 90%

💨 Max wind: 31.7 km/h

🌧️ Total precip: 0.3 mm

☀️ UV Index: 1.1

🌅 Sunrise: 06:26 AM

🌇 Sunset: 07:41 PM

🌙 Waning Crescent

🌑 Moon: 23% lit

Tue, Apr 14

Patchy rain nearby

24° / 20°

🌧️ 61% chance of rain

💧 Avg. humidity: 86%

💨 Max wind: 36 km/h

🌧️ Total precip: 0.12 mm

☀️ UV Index: 1.2

🌅 Sunrise: 06:25 AM

🌇 Sunset: 07:42 PM

🌙 Waning Crescent

🌑 Moon: 15% lit

Wed, Apr 15

Moderate rain

25° / 16°

🌧️ 87% chance of rain

💧 Avg. humidity: 81%

💨 Max wind: 33.8 km/h

🌧️ Total precip: 7.11 mm

☀️ UV Index: 1.1

🌅 Sunrise: 06:23 AM

🌇 Sunset: 07:43 PM

🌙 Waning Crescent

🌑 Moon: 8% lit

Best Time to Visit Monmouth

Plan your trip to Monmouth, United States around the most favorable weather conditions.

Peak Season

June – September

Warm, dry summers — ideal for outdoor activities.

Shoulder Season

April – May, October

Fewer crowds, moderate prices, mild weather.

Off Season

November – March

Cooler temperatures; some regions may experience rain or snow.

← Back to Monmouth 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Monmouth?

Current conditions in Monmouth: Overcast, temperature 19°C, humidity 100%.

What is the best time to visit Monmouth?

The best time to visit Monmouth is typically June – September. Warm, dry summers — ideal for outdoor activities.

What is the climate like in Monmouth?

Monmouth is located at approximately 40.9° latitude. It has a temperate climate with warm summers and cold winters.

Does it rain a lot in Monmouth?

The wettest period in Monmouth is typically during November – March. Cooler temperatures; some regions may experience rain or snow.

What should I pack for a trip to Monmouth?

For visits to Monmouth during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.

What country is Monmouth in?

Monmouth is located in United States, in the state of Illinois.

What are the public holidays in Monmouth in 2026?

View the 2026 public holidays for Monmouth on our Holidays page.

What are the GPS coordinates used for the weather forecast in Monmouth?

The weather forecast for Monmouth uses coordinates 40.9127, -90.6472.