DeKalb County, IN Weather Forecast
County weather hub
Mostly Cloudy
Compare major city weather across DeKalb County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly cloudy, with a high near 68. South wind 5 to 10 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
- May 15 to May 21, 2026
- Latest sync
- May 15, 2026 12:26 PM 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 85 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 49 degrees F.
The strongest winds are forecast for Saturday at about 10 to 15 mph SW.
Precipitation is mentioned in 13 upcoming forecast periods.
Forecast Details
- Last updated
- May 15, 2026 12:26 PM 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
A chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 53. South wind 5 to 10 mph. Chance of precipitation is 40%.
Showers and thunderstorms likely before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 79. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Southwest wind 0 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers before 8am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 83. South wind 0 to 10 mph. Chance of precipitation is 50%.
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 64. Chance of precipitation is 20%.
A chance of showers and thunderstorms after 2pm. Sunny, with a high near 84. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 2am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers and thunderstorms likely. Partly sunny, with a high near 85. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Rain showers likely before 2pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 71. Chance of precipitation is 60%.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 49.
A slight chance of rain showers before 8am. Mostly sunny, with a high near 68.
A slight chance of rain showers after 8pm. Partly cloudy, with a low around 49.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
May 15
|
Mostly Cloudy
|
68°F |
5 to 10 mph
S
|
|
Tonight
May 15
|
Partly Cloudy then Chance Showers And Thunderstorms
|
53°F |
5 to 10 mph
S
|
|
Saturday
May 16
|
Showers And Thunderstorms Likely
|
79°F |
10 to 15 mph
SW
|
|
Saturday Night
May 16
|
Chance Showers And Thunderstorms
|
59°F |
0 to 10 mph
SW
|
|
Sunday
May 17
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
83°F |
0 to 10 mph
S
|
|
Sunday Night
May 17
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
64°F |
5 to 10 mph
S
|
|
Monday
May 18
|
Sunny then Chance Showers And Thunderstorms
|
84°F |
5 to 15 mph
S
|
|
Monday Night
May 18
|
Chance Showers And Thunderstorms
|
69°F |
10 to 15 mph
S
|
|
Tuesday
May 19
|
Chance Showers And Thunderstorms
|
85°F |
10 to 15 mph
SW
|
|
Tuesday Night
May 19
|
Showers And Thunderstorms Likely
|
60°F |
10 to 15 mph
SW
|
|
Wednesday
May 20
|
Rain Showers Likely then Slight Chance Showers And Thunderstorms
|
71°F |
10 mph
W
|
|
Wednesday Night
May 20
|
Slight Chance Showers And Thunderstorms
|
49°F |
5 to 10 mph
N
|
|
Thursday
May 21
|
Slight Chance Rain Showers then Mostly Sunny
|
68°F |
5 to 10 mph
NE
|
|
Thursday Night
May 21
|
Slight Chance Rain Showers
|
49°F |
5 mph
E
|
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.
