Live Weather & Forecast

Weather in Long Grove

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

Flag of United States
Partly cloudy
17°C
Feels like 17°C
63°F / Feels 63°F
Partly cloudy
Long Grove, Illinois
🌞 Daytime
Updated: 2026-04-12 06:45
💧
Humidity
78%
💨
Wind
26.6 km/h SSW
🌬️
Wind Gust
44.9 km/h
🌡️
Pressure
1013 mb
👁️
Visibility
16 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
75%
💦
Dew Point
11.5°C
🌐
Wind Degree
192°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
168.9 μg/m³
NO₂
3.6 μg/m³
O₃
87 μg/m³
SO₂
1.5 μg/m³
PM 2.5
6.7 μg/m³
PM 10
7 μg/m³

Weather Alerts 4

Met · Severe · Immediate
Flood Warning issued April 11 at 9:50AM CDT until April 16 at 3:00AM CDT by NWS Quad Cities IA IL

...The Flood Warning continues for the following rivers in Iowa... Wapsipinicon River near De Witt 4S affecting Scott and Clinton Counties. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. This approaches the flood of record. * WHERE...Wapsipinicon River near De Witt 4S. * WHEN...Until early Thursday morning. * IMPACTS...At 12.0 feet, Overbank flooding occurs. Water...

Caution is urged when walking near riverbanks. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. The next statement will be issued by Sunday morning at 1000...

Effective: 2026-04-11T09:50:00-05:00  ·  Expires: 2026-04-12T10:00:00-05:00
Met · Severe · Immediate
Flood Warning issued April 11 at 9:04PM CDT until April 16 at 3:00AM CDT by NWS Quad Cities IA IL

...The Flood Warning continues for the following rivers in Iowa... Wapsipinicon River near De Witt 4S affecting Clinton and Scott Counties. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Wapsipinicon River near De Witt 4S. * WHEN...Until early Thursday morning. * IMPACTS...At 12.0 feet, Overbank flooding occurs. Water affects residences along the river be...

Caution is urged when walking near riverbanks. 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 by Sunday evening at 915 P...

Effective: 2026-04-11T21:04:00-05:00  ·  Expires: 2026-04-12T21:15:00-05:00
Met · Severe · Immediate
Flood Warning issued April 11 at 10:12AM CDT until April 14 at 9:00AM CDT by NWS Quad Cities IA IL

...The Flood Warning is extended for the following rivers in Iowa... Cedar River near Conesville affecting Muscatine and Louisa Counties. Iowa River at Wapello affecting Louisa County. Iowa River at Oakville affecting Louisa County. ...The Flood Warning continues for the following rivers in Iowa... Iowa River at Marengo affecting Iowa and Benton Counties. * WHAT...Minor flooding is occurring...

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Stay tuned to further developments by listening to your local radio, television, or NOAA Weather Radio for f...

Effective: 2026-04-11T10:12:00-05:00  ·  Expires: 2026-04-12T10:15:00-05:00
Met · Severe · Immediate
Flood Warning issued April 11 at 9:13PM CDT until April 13 at 6:00PM CDT by NWS Quad Cities IA IL

...The Flood Warning continues for the following rivers in Iowa... Cedar River near Conesville affecting Muscatine and Louisa Counties. Iowa River at Wapello affecting Louisa County. Iowa River at Marengo affecting Iowa and Benton Counties. ...The Flood Warning is extended for the following rivers in Iowa... Iowa River at Oakville affecting Louisa County. * WHAT...Minor flooding is occurring...

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. The next statement will be issued by Sunday evening at 915 PM CDT.

Effective: 2026-04-11T21:13:00-05:00  ·  Expires: 2026-04-12T21:15:00-05:00

Today's Hourly Forecast

24-hour breakdown for Long Grove, Illinois

12 AM
Clear
12°
Clear
💧 59% 💨 20.5 km/h
1 AM
Clear
12°
Clear
💧 77% 💨 20.2 km/h
2 AM
Clear
12°
Clear
💧 87% 💨 18.7 km/h
3 AM
Clear
13°
Clear
💧 87% 💨 19.1 km/h
4 AM
Clear
14°
Clear
💧 86% 💨 22 km/h
5 AM
Clear
14°
Clear
💧 84% 💨 26.3 km/h
6 AM
Partly cloudy
17°
Partly cloudy
💧 78% 💨 26.6 km/h
7 AM
Patchy rain nearby
15°
Patchy rain nearby
💧 82% 💨 26.6 km/h 🌧️ 100%
8 AM
Moderate rain at times
15°
Moderate rain at times
💧 82% 💨 26.6 km/h 🌧️ 100%
9 AM
Patchy rain nearby
16°
Patchy rain nearby
💧 83% 💨 28.1 km/h 🌧️ 68%
10 AM
Sunny
19°
Sunny
💧 82% 💨 31.3 km/h
11 AM
Sunny
21°
Sunny
💧 78% 💨 33.5 km/h
12 PM
Sunny
22°
Sunny
💧 73% 💨 33.5 km/h
1 PM
Sunny
23°
Sunny
💧 71% 💨 30.2 km/h
2 PM
Partly Cloudy
22°
Partly Cloudy
💧 66% 💨 29.9 km/h
3 PM
Light drizzle
22°
Light drizzle
💧 72% 💨 29.9 km/h 🌧️ 100%
4 PM
Patchy rain nearby
20°
Patchy rain nearby
💧 86% 💨 26.3 km/h 🌧️ 100%
5 PM
Overcast
19°
Overcast
💧 97% 💨 24.5 km/h
6 PM
Overcast
18°
Overcast
💧 98% 💨 20.5 km/h
7 PM
Heavy rain
18°
Heavy rain
💧 98% 💨 22.7 km/h 🌧️ 100%
8 PM
Overcast
18°
Overcast
💧 97% 💨 25.2 km/h
9 PM
Overcast
18°
Overcast
💧 96% 💨 27.7 km/h
10 PM
Moderate rain
17°
Moderate rain
💧 97% 💨 27.4 km/h 🌧️ 100%
11 PM
Overcast
17°
Overcast
💧 95% 💨 24.8 km/h

3-Day Forecast

Daily overview for Long Grove, Illinois

Today
Moderate rain
Moderate rain
24° / 12°
🌧️ 86% chance of rain
💧 Avg. humidity: 84%
💨 Max wind: 33.5 km/h
🌧️ Total precip: 16.15 mm
☀️ UV Index: 0.6
🌅 Sunrise: 06:27 AM
🌇 Sunset: 07:40 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Overcast
Overcast
22° / 17°
🌧️ 0% chance of rain
💧 Avg. humidity: 92%
💨 Max wind: 30.2 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:25 AM
🌇 Sunset: 07:41 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Thundery outbreaks in nearby
Thundery outbreaks in nearby
26° / 19°
🌧️ 0% chance of rain
💧 Avg. humidity: 88%
💨 Max wind: 31.3 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.3
🌅 Sunrise: 06:24 AM
🌇 Sunset: 07:42 PM
🌙 Waning Crescent
🌑 Moon: 15% lit

Best Time to Visit Long Grove

Plan your trip to Long Grove, 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 Long Grove 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Long Grove?
Current conditions in Long Grove: Partly cloudy, temperature 17°C, humidity 78%.
What is the best time to visit Long Grove?
The best time to visit Long Grove is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Long Grove?
Long Grove is located at approximately 41.7° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Long Grove?
The wettest period in Long Grove is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Long Grove?
For visits to Long Grove during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Long Grove in?
Long Grove is located in United States, in the state of Illinois.
What are the public holidays in Long Grove in 2026?
View the 2026 public holidays for Long Grove on our Holidays page.
What are the GPS coordinates used for the weather forecast in Long Grove?
The weather forecast for Long Grove uses coordinates 41.6981, -90.5833.