weathermetro
Cities / United States
/ Illinois
⛅ DeKalb weather
Partly cloudy. .
Feels like 22° Wind 13 km/h NE Humidity 94% Pressure 1014 hPa UV 1 Air Good ☀ 06:02 - 19:56
Right now it is 20° in DeKalb with partly cloudy skies, today's high is 28° with an overnight low of 19° and about 4.7 mm of rain is expected. The sun rises at 06:02 and sets at 19:56, giving 13h 54m of daylight. Over the coming week highs range from 24° to 29° .
DeKalb is in Illinois, United States, sitting 268 m above sea level, with a population of about 43,000. Local time is America/Chicago (UTC−5), and every time on this page is shown in it.
Next 24 hours - temperature
19°
24°
28°
28°
19°
03:00 · 20.4° · 0 mm
04:00 · 19.6° · 0 mm
05:00 · 19.3° · 0 mm
06:00 · 19.6° · 0 mm
07:00 · 19.8° · 0 mm
08:00 · 21.5° · 0 mm
09:00 · 23.2° · 0 mm
10:00 · 24.2° · 0 mm
11:00 · 25.2° · 0 mm
12:00 · 26.3° · 0 mm
13:00 · 26.8° · 0 mm
14:00 · 27.1° · 0 mm
15:00 · 27.6° · 0 mm
16:00 · 26.8° · 0 mm
17:00 · 25.9° · 0 mm
18:00 · 26° · 0 mm
19:00 · 24.9° · 0 mm
20:00 · 23.9° · 0 mm
21:00 · 23° · 4.7 mm
22:00 · 22.3° · 0 mm
23:00 · 21.9° · 0 mm
00:00 · 21.6° · 0.4 mm
01:00 · 21.4° · 0 mm
02:00 · 21.3° · 0 mm
Precipitation
03:00 · 0 mm
03:00
04:00 · 0 mm
05:00 · 0 mm
06:00 · 0 mm
06:00
07:00 · 0 mm
08:00 · 0 mm
09:00 · 0 mm
09:00
10:00 · 0 mm
11:00 · 0 mm
12:00 · 0 mm
12:00
13:00 · 0 mm
14:00 · 0 mm
15:00 · 0 mm
15:00
16:00 · 0 mm
17:00 · 0 mm
18:00 · 0 mm
18:00
19:00 · 0 mm
20:00 · 0 mm
21:00 · 4.7 mm
21:00
22:00 · 0 mm
23:00 · 0 mm
00:00 · 0.4 mm
00:00
01:00 · 0 mm
02:00 · 0 mm
Hour by hour
TIME TEMP FEELS RAIN CONDITIONS
03:00
☁️
20.4°
21.1°
-
Overcast
04:00
⛅
19.6°
20.5°
-
Partly cloudy
05:00
☁️
19.3°
20.2°
-
Overcast
06:00
☁️
19.6°
20.5°
-
Overcast
07:00
☀️
19.8°
20.8°
-
Clear sky
08:00
☀️
21.5°
22.5°
-
Clear sky
09:00
☀️
23.2°
24.2°
-
Clear sky
10:00
⛅
24.2°
25.8°
-
Partly cloudy
11:00
☁️
25.2°
24.8°
-
Overcast
12:00
☁️
26.3°
26.8°
-
Overcast
13:00
☁️
26.8°
29.1°
-
Overcast
14:00
☁️
27.1°
29.3°
-
Overcast
🌧️
TodayAugust 14th
Avg 23° Low 19° at 05:00
High 28° at 15:00
4.7 mm rain Wind ~22 km/h
Cloudy
Clear
Cloudy
00:00
21°
02:00
20°
04:00
20°
06:00
20°
08:00
22°
10:00
24°
12:00
26°
14:00
27°
16:00
27°
18:00
26°
20:00
24°
22:00
22°
🌧️
SaturdayAugust 15th
Avg 24° Low 21° at 03:00
High 29° at 17:00
52.9 mm rain Feels 33° Wind ~19 km/h
Rain
Cloudy
Partly Cloudy
Cloudy
00:00
22°
0.4mm
02:00
21°
04:00
21°
10.4mm
06:00
21°
5.8mm
08:00
22°
0.7mm
10:00
22°
12:00
23°
14:00
27°
16:00
28°
18:00
28°
20:00
26°
22:00
25°
🌧️
SundayAugust 16th
Avg 24° Low 19° at 23:00
High 27° at 14:00
8.9 mm rain Feels 29° Wind ~18 km/h
Rain
Rain
Cloudy
Partly Cloudy
Clear
00:00
23°
0.35mm
02:00
22°
04:00
22°
3.5mm
06:00
22°
08:00
22°
1.8mm
10:00
24°
12:00
27°
14:00
27°
16:00
27°
18:00
26°
20:00
22°
22:00
20°
☀️
MondayAugust 17th
Avg 22° Low 17° at 05:00
High 27° at 15:00
Feels 29° Wind ~11 km/h
Clear
Clear
00:00
19°
02:00
18°
04:00
18°
06:00
17°
08:00
20°
10:00
23°
12:00
25°
14:00
27°
16:00
27°
18:00
26°
20:00
21°
22:00
19°
🌧️
TuesdayAugust 18th
Avg 22° Low 17° at 05:00
High 27° at 15:00
4.6 mm rain Feels 30° Wind ~35 km/h
Clear
Cloudy
Cloudy
Rain
00:00
18°
02:00
18°
04:00
17°
06:00
17°
08:00
20°
10:00
23°
12:00
25°
14:00
27°
16:00
27°
18:00
26°
20:00
24°
1mm
22:00
22°
1mm
🌧️
WednesdayAugust 19th
Avg 20° Low 17° at 23:00
High 24° at 15:00
3 mm rain Wind ~16 km/h
Cloudy
Clear
Cloudy
Partly Cloudy
Cloudy
00:00
19°
1.5mm
02:00
18°
04:00
19°
06:00
18°
08:00
19°
10:00
21°
12:00
23°
14:00
24°
16:00
24°
18:00
23°
20:00
20°
22:00
17°
🌦️
ThursdayAugust 20th
Avg 19° Low 15° at 06:00
High 24° at 15:00
0.7 mm rain Feels 26° Wind ~11 km/h
Cloudy
Partly Cloudy
Cloudy
00:00
17°
02:00
16°
04:00
15°
06:00
15°
08:00
17°
10:00
21°
12:00
23°
14:00
24°
16:00
24°
18:00
22°
20:00
20°
22:00
19°
🌧️
FridayAugust 21st
Avg 16° Low 15° at 04:00
High 18° at 18:00
47.3 mm rain Feels 16° Wind ~27 km/h
Rain
Cloudy
Partly Cloudy
00:00
17°
0.7mm
02:00
15°
2.7mm
04:00
15°
2.7mm
06:00
15°
4.4mm
08:00
16°
8.1mm
10:00
16°
8.1mm
12:00
17°
0.1mm
14:00
18°
16:00
17°
18:00
18°
20:00
17°
22:00
16°
🌦️
SaturdayAugust 22nd
Avg 20° Low 14° at 06:00
High 25° at 16:00
1.2 mm rain Feels 27° Wind ~13 km/h
Cloudy
Partly Cloudy
Clear
Rain
00:00
15°
02:00
15°
04:00
15°
06:00
14°
08:00
16°
10:00
20°
12:00
23°
14:00
24°
16:00
25°
18:00
24°
20:00
22°
0.4mm
22:00
21°
0.4mm
☀️
SundayAugust 23rd
Avg 22° Low 19° at 06:00
High 27° at 15:00
Wind ~16 km/h
Clear
00:00
20°
02:00
19°
04:00
19°
06:00
19°
08:00
20°
10:00
24°
12:00
25°
14:00
27°
16:00
27°
18:00
25°
20:00
23°
22:00
21°
⛅
MondayAugust 24th
Avg 22° Low 17° at 06:00
High 28° at 16:00
Feels 30° Wind ~21 km/h
Clear
Partly Cloudy
Clear
00:00
19°
02:00
19°
04:00
18°
06:00
17°
08:00
19°
10:00
23°
12:00
25°
14:00
27°
16:00
28°
18:00
26°
20:00
25°
22:00
23°
☀️
TuesdayAugust 25th
Avg 20° Low 17° at 07:00
High 24° at 15:00
Wind ~20 km/h
Clear
00:00
22°
02:00
21°
04:00
20°
06:00
17°
08:00
18°
10:00
21°
12:00
23°
14:00
24°
16:00
24°
18:00
21°
20:00
19°
22:00
17°
☁️
WednesdayAugust 26th
Avg 19° Low 16° at 06:00
High 23° at 16:00
Wind ~13 km/h
Cloudy
00:00
17°
02:00
17°
04:00
16°
06:00
16°
08:00
18°
10:00
21°
12:00
21°
14:00
21°
16:00
23°
18:00
21°
20:00
19°
22:00
17°
🌤️
ThursdayAugust 27th
Avg 20° Low 16° at 05:00
High 25° at 15:00
Feels 27° Wind ~12 km/h
Clear
Partly Cloudy
Clear
00:00
17°
02:00
16°
04:00
16°
06:00
16°
08:00
18°
10:00
22°
12:00
24°
14:00
25°
16:00
25°
18:00
23°
20:00
21°
22:00
19°
☀️
FridayAugust 28th
Avg 17° Low 11° at 23:00
High 21° at 14:00
Feels 18° Wind ~19 km/h
Clear
00:00
17°
02:00
16°
04:00
15°
06:00
14°
08:00
16°
10:00
19°
12:00
21°
14:00
21°
16:00
20°
18:00
17°
20:00
14°
22:00
12°
⛅
SaturdayAugust 29th
Avg 16° Low 0° at 06:00
High 0° at 15:00
Feels 19° Wind ~16 km/h
Clear
Partly Cloudy
Clear
Unknown
00:00
11°
02:00
11°
04:00
12°
06:00
11°
08:00
13°
10:00
18°
12:00
20°
14:00
21°
16:00
21°
18:00
17°
20:00
0°
22:00
0°
Sun
☀️ Sunrise 06:02 · Sunset 19:56
13h 54m of daylight · America/Chicago
Air quality
PM2.5 6.8 µg/m³ - Good
No reason to change your plans - open the windows.
Source: Copernicus CAMS, updated hourly.
Common questions about DeKalb weather
Will it rain in DeKalb today?
Yes - about 4.7 mm of rain is expected in DeKalb today.
What is the temperature in DeKalb right now?
It is 20° in DeKalb right now, though it feels closer to 22° . Today runs between a low of 19° and a high of 28° .
What time is sunrise and sunset in DeKalb?
The sun rises at 06:02 and sets at 19:56 local time in DeKalb today, giving 13h 54m of daylight.
What is the air quality in DeKalb?
PM2.5 in DeKalb is currently 6.8 µg/m³, which counts as Good on the European air-quality index. No reason to change your plans - open the windows.
How accurate is the DeKalb forecast, and how far ahead does it go?
This page shows 16 days ahead, refreshed every hour. It blends ECMWF, NOAA GFS and whichever national high-resolution model covers DeKalb best. The first three days are the dependable part - day one is usually within a degree or two - and accuracy falls off steadily after day five, so read the far end as a trend rather than a plan. We publish our measured error against real station observations on the accuracy page.
This page is a live API demo. Everything above came from one call to the WeatherMetro API - free tier, 100,000 calls a month.
Read the docs
weathermetro A HatchSquare product. Weather for every place on Earth - free to read, free to build on, priced only when you need scale.
© 2026 WeatherMetro · Weather data: ECMWF, NOAA, DWD, Météo-France, ECCC, MeteoSwiss and others (CC-BY 4.0) · Air quality & history: Copernicus CAMS / C3S · Location data: GeoNames (CC-BY) · Alerts: NWS, MeteoAlarm, ECCC