DeKalb County, IN Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across DeKalb County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 82. South wind 0 to 5 mph.
County Weather Overview
This county weather page brings together forecast coverage for DeKalb County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 3 of 3 mapped cities in DeKalb County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 29 to Sep 4, 2026
- Latest sync
- Aug 29, 2026 8:09 AM EDT
- Forecast office
- IWX
- Source
- NOAA / NWS
Daily Outlook
This Week in DeKalb County
Tuesday looks like the warmest upcoming period in DeKalb County at 92 degrees F.
Tonight is the coolest period ahead with temperatures near 64 degrees F.
The strongest winds are forecast for Sunday at about 5 to 10 mph S.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 29, 2026 8:09 AM EDT
- Coverage
- 7 days
- Time zone
- America/Indiana/Indianapolis
- Forecast office
- IWX
- Radar station
- KIWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly cloudy, with a low around 64. South wind 0 to 5 mph.
Partly sunny, with a high near 85. South wind 5 to 10 mph.
Mostly cloudy, with a low around 68. Southwest wind 0 to 10 mph.
Partly sunny, with a high near 89. Southwest wind 5 to 10 mph.
Partly cloudy, with a low around 73.
Mostly sunny, with a high near 92.
Partly cloudy, with a low around 74.
Mostly sunny, with a high near 91.
A chance of showers and thunderstorms after 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 2pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 66.
A chance of rain showers before 2pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 85.
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 64.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Aug 29
|
Mostly Sunny
|
82°F |
0 to 5 mph
S
|
|
Tonight
Aug 29
|
Mostly Cloudy
|
64°F |
0 to 5 mph
S
|
|
Sunday
Aug 30
|
Partly Sunny
|
85°F |
5 to 10 mph
S
|
|
Sunday Night
Aug 30
|
Mostly Cloudy
|
68°F |
0 to 10 mph
SW
|
|
Monday
Aug 31
|
Partly Sunny
|
89°F |
5 to 10 mph
SW
|
|
Monday Night
Aug 31
|
Partly Cloudy
|
73°F |
5 to 10 mph
SW
|
|
Tuesday
Sep 1
|
Mostly Sunny
|
92°F |
5 to 10 mph
SW
|
|
Tuesday Night
Sep 1
|
Partly Cloudy
|
74°F |
5 to 10 mph
SW
|
|
Wednesday
Sep 2
|
Mostly Sunny
|
91°F |
5 to 10 mph
SW
|
|
Wednesday Night
Sep 2
|
Chance Showers And Thunderstorms
|
70°F |
5 to 10 mph
W
|
|
Thursday
Sep 3
|
Chance Showers And Thunderstorms
|
87°F |
5 mph
W
|
|
Thursday Night
Sep 3
|
Slight Chance Showers And Thunderstorms
|
66°F |
0 to 5 mph
N
|
|
Friday
Sep 4
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
85°F |
0 to 5 mph
SW
|
|
Friday Night
Sep 4
|
Slight Chance Showers And Thunderstorms
|
64°F |
5 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across DeKalb County.
Coverage
Forecast coverage currently spans 3 of 3 mapped cities in DeKalb County.
Largest mapped city population in this region: 56,305.
