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WeatherLive › Illinois › DeKalb

DeKalb, IL Weather

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherDeKalb · 7:30 PM CDT
82° | 66°
76°F
Feels like 81°
Mostly cloudy
WindE 6 mph · Gusts 11 mph
Precip82% · 0.29 in
Humidity85% · Dew point 71°
UV index4 Moderate
Air Quality41 Good
Pressure29.94 inHg
Visibility6 mi
Sunrise / Sunset6:01 AM · 7:58 PM · 13h 57m

Weather map — DeKalb

Full radar →
Now
76°
26%
6 mph
20:00
73°
16%
6 mph
21:00
73°
16%
7 mph
22:00
72°
18%
7 mph
23:00
69°
0.21 in
7 mph
00:00
68°
0.26 in
5 mph
01:00
68°
0.16 in
4 mph
02:00
68°
0.15 in
5 mph
03:00
68°
0.02 in
7 mph
04:00
68°
0.29 in
4 mph
05:00
68°
0.05 in
5 mph
06:00
67°
0.10 in
3 mph
07:00
68°
0.04 in
9 mph
08:00
69°
25%
11 mph
09:00
70°
33%
7 mph
10:00
72°
31%
9 mph
11:00
73°
31%
7 mph
12:00
75°
26%
10 mph
13:00
77°
20%
11 mph
14:00
78°
16%
10 mph
15:00
78°
14%
10 mph
16:00
78°
23%
6 mph
17:00
79°
15%
6 mph
18:00
78°
16%
6 mph

Today · Thu 8/13

High 82°
82% / 0.29 in

Sunny. Winds SE at 9 mph.

Tonight · Thu 8/13

Low 67°
16% / –

Sunny. Winds E at 7 mph.

Tomorrow · Fri 8/14

79° | 67°
88% / 1.08 in

Showers. Winds E at 11 mph.

7-day trend

DeKalb · temperature + precipitation

10-day forecast

Updated 7:30 PM

Details & indices

Wind
6 mph E
Gusts 11 mph
Humidity
85%
Dew point 71°
Pressure
29.94 inHg
Rising
UV index
4 — Moderate
High today
Air Quality
Good
AQI 41 · US EPA
Allergy
None detected
—
Visibility
6 mi
Reduced
Allergy — DeKalb

🌿 Conditions right now

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

Sun & moon

Sunrise6:01 AM
Sunset7:58 PM
Length of day13h 57m
Moonrise6:44 AM
Moonset8:27 PM
Moon phase🌔 New Moon
Latitude41.9295°N
Longitude-88.7504°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
Poor
Line-drying weather
Grilling
Fair
Fire up the grill
Running
Poor
Lace up outside
Patio
Fair
Dinner outdoors
Nearby places in {{REGION}}
Chicago
Partly cloudy
74° 🌤️
Aurora
—
—
Rockford
Partly cloudy
80°
Joliet
Partly cloudy
79° 🌤️
Naperville
—
—
Data sources · Thursday, August 13
Where the DeKalb 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: 41.9295°N, -88.7504°.
NBM + global weather models
Updated: 7:30 PM
Weather in DeKalb
The 10-day span for DeKalb runs from a high near 83° on Friday down to 60° overnight on Tuesday. Models drop roughly 2.5 in of precipitation across the stretch — watch Saturday (91%). No watches or warnings are active for the area right now. Right now DeKalb is about 5° cooler than nearby Rockford. Longer view: variable mid-latitude weather in every season.
DeKalb, IL · Elev 879 ft · 41.93°N, 88.75°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: 7:30 PM