Johnson County, IN Weather Forecast
County weather hub
Mostly Clear
Compare major city weather across Johnson County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly clear. Low around 60, with temperatures rising to around 62 overnight. East northeast wind around 3 mph.
County Weather Overview
This county weather page brings together forecast coverage for Johnson County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 8 of 8 mapped cities in Johnson County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 29 to Sep 4, 2026
- Latest sync
- Aug 29, 2026 5:04 AM EDT
- Forecast office
- IND
- Source
- NOAA / NWS
Daily Outlook
This Week in Johnson County
Wednesday looks like the warmest upcoming period in Johnson County at 94 degrees F.
Overnight is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Monday at about 5 to 9 mph SSW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 29, 2026 5:04 AM EDT
- Coverage
- 7 days
- Time zone
- America/Indiana/Indianapolis
- Forecast office
- IND
- Radar station
- KIND
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly sunny, with a high near 83. East southeast wind around 3 mph.
Partly cloudy, with a low around 65. Southeast wind around 3 mph.
Mostly sunny, with a high near 89. South southwest wind 3 to 8 mph.
Partly cloudy, with a low around 69. South southwest wind around 7 mph.
Sunny, with a high near 91. South southwest wind 5 to 9 mph.
Partly cloudy, with a low around 72. South southwest wind around 6 mph.
Sunny, with a high near 93. Southwest wind 5 to 8 mph.
Mostly clear, with a low around 74. Southwest wind around 6 mph.
Sunny, with a high near 94. Southwest wind 5 to 9 mph.
Partly cloudy, with a low around 74.
A slight chance of rain showers between 8am and 2pm, then a slight chance of showers and thunderstorms. Sunny, with a high near 92. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
A chance of rain showers before 2pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Aug 29
|
Mostly Clear
|
60°F |
3 mph
ENE
|
|
Saturday
Aug 29
|
Mostly Sunny
|
83°F |
3 mph
ESE
|
|
Saturday Night
Aug 29
|
Partly Cloudy
|
65°F |
3 mph
SE
|
|
Sunday
Aug 30
|
Mostly Sunny
|
89°F |
3 to 8 mph
SSW
|
|
Sunday Night
Aug 30
|
Partly Cloudy
|
69°F |
7 mph
SSW
|
|
Monday
Aug 31
|
Sunny
|
91°F |
5 to 9 mph
SSW
|
|
Monday Night
Aug 31
|
Partly Cloudy
|
72°F |
6 mph
SSW
|
|
Tuesday
Sep 1
|
Sunny
|
93°F |
5 to 8 mph
SW
|
|
Tuesday Night
Sep 1
|
Mostly Clear
|
74°F |
6 mph
SW
|
|
Wednesday
Sep 2
|
Sunny
|
94°F |
5 to 9 mph
SW
|
|
Wednesday Night
Sep 2
|
Partly Cloudy
|
74°F |
7 mph
SW
|
|
Thursday
Sep 3
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
92°F |
5 to 8 mph
W
|
|
Thursday Night
Sep 3
|
Chance Showers And Thunderstorms
|
70°F |
6 mph
SSE
|
|
Friday
Sep 4
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
89°F |
6 mph
WSW
|
Major City Forecasts
Live forecast snapshots for major cities across Johnson County.
Coverage
Forecast coverage currently spans 8 of 8 mapped cities in Johnson County.
Largest mapped city population in this region: 60,279.
