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WeatherLive › Illinois › Round Lake

Round Lake, IL Weather

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherRound Lake · 2:55 PM CDT
26° | 15°
26°C
Feels like 27°
Partly cloudy
WindSW 6 mph · Gusts 10 mph
Precip76% · 3.21 in
Humidity55% · Dew point 16°
UV index6 Moderate
Air Quality68 Moderate
Pressure29.97 inHg
Visibility6 mi
Sunrise / Sunset6:06 AM · 7:44 PM · 13h 38m

Weather map — Round Lake

Full radar →
Now
26°
17%
6 mph
15:00
26°
17%
8 mph
16:00
26°
24%
11 mph
17:00
26°
23%
10 mph
18:00
25°
26%
9 mph
19:00
24°
28%
8 mph
20:00
23°
31%
6 mph
21:00
22°
35%
6 mph
22:00
20°
1.52 in
5 mph
23:00
20°
1.65 in
5 mph
00:00
20°
1.65 in
6 mph
01:00
20°
1.65 in
6 mph
02:00
19°
1.65 in
7 mph
03:00
19°
1.65 in
7 mph
04:00
19°
1.65 in
9 mph
05:00
18°
1.65 in
10 mph
06:00
16°
15%
9 mph
07:00
16°
14%
10 mph
08:00
16°
12%
11 mph
09:00
18°
8%
12 mph
10:00
20°
5%
13 mph
11:00
22°
3%
12 mph
12:00
23°
3%
12 mph
13:00
24°
2%
13 mph

Today · Fri 8/21

High 26°
76% / 3.21 in

Sunny. Winds SW at 11 mph.

Tonight · Fri 8/21

Low 16°
35% / 0.01 in

Partly cloudy. Winds W at 6 mph.

Tomorrow · Sat 8/22

25° | 16°
72% / 9.89 in

Sunny. Winds NW at 15 mph.

7-day trend

Round Lake · temperature + precipitation

10-day forecast

Updated 2:55 PM

Details & indices

Wind
6 mph SW
Gusts 10 mph
Humidity
55%
Dew point 16°
Pressure
29.97 inHg
Rising
UV index
6 — Moderate
High today
Air Quality
Moderate
AQI 68 · US EPA
Allergy
Low
Mugwort
Visibility
6 mi
Clear view
Allergy — Round Lake

🌿 Conditions right now

View all →
Birch
None
Grass
Low
Oak
None
Alder
None
Hazel
None
Mugwort
Low
Ragweed
Low

Sun & moon

Sunrise6:06 AM
Sunset7:44 PM
Length of day13h 38m
Moonrise3:54 PM
Moonset—
Moon phase🌓 First Quarter · 66%
Next full moonAug 27 Sturgeon Moon
Latitude42.3534°N
Longitude-88.0934°E

Water temps nearby

View all →
No beaches within 50 miles
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Fair
Line-drying weather
Grilling
Fair
Fire up the grill
Running
Poor
Lace up outside
Patio
Fair
Dinner outdoors
Nearby places in {{REGION}}
Chicago
Mostly cloudy
26°
Aurora
Sunny
24°
Rockford
Showers
24°
Joliet
Mostly cloudy
26° 🌤️
Naperville
—
—
Data sources · Friday, August 21
Where the Round Lake forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 42.3534°N, -88.0934°.
NBM + global weather models
Updated: 2:55 PM
Weather in Round Lake
Round Lake's outlook: warmest day near 27° (Saturday), coldest night about 15° (Sunday). About 13.9 in of precipitation is expected in total; the most likely wet day is Saturday (82% chance). Hold onto the patio furniture Saturday: gusts could hit 30 mph. The NWS alert board for this area is currently clear. Right now Round Lake is running about 63° warmer than Madison. Longer view: variable mid-latitude weather in every season.
Round Lake, IL · Elev 797 ft · 42.35°N, 88.09°W · Illinois · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 2:55 PM