Cass County, IN Weather Forecast
County weather hub
Partly Sunny then Slight Chance Showers And Thunderstorms
Compare major city weather across Cass County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of showers and thunderstorms between noon and 2pm, then showers and thunderstorms between 2pm and 5pm, then showers and thunderstorms likely. Partly sunny, with a high near 85. Southwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Cass County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Cass County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- May 18 to May 24, 2026
- Latest sync
- May 18, 2026 8:00 AM EDT
- Forecast office
- IWX
- Source
- NOAA / NWS
Daily Outlook
This Week in Cass County
Today looks like the warmest upcoming period in Cass County at 85 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 48 degrees F.
The strongest winds are forecast for Today at about 10 to 20 mph SW.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- May 18, 2026 8:00 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
A slight chance of showers and thunderstorms before 11pm. Mostly cloudy, with a low around 69. South wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%. New rainfall amounts between a quarter and half of an inch possible.
A slight chance of showers and thunderstorms between noon and 1pm, then showers and thunderstorms. Partly sunny. High near 85, with temperatures falling to around 80 in the afternoon. Southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms likely. Mostly cloudy, with a low around 56. West 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 slight chance of rain showers before 8am. Partly sunny, with a high near 66. North wind around 10 mph. Chance of precipitation is 20%.
Mostly cloudy, with a low around 48.
Mostly sunny, with a high near 67.
Partly cloudy, with a low around 50.
A chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 73. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 50%.
A chance of rain showers before 2pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 60.
A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82.
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 63.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
May 18
|
Partly Sunny then Slight Chance Showers And Thunderstorms
|
85°F |
10 to 20 mph
SW
|
|
Tonight
May 18
|
Slight Chance Showers And Thunderstorms then Mostly Cloudy
|
69°F |
10 to 20 mph
S
|
|
Tuesday
May 19
|
Partly Sunny then Slight Chance Showers And Thunderstorms
|
85°F |
15 to 20 mph
SW
|
|
Tuesday Night
May 19
|
Showers And Thunderstorms Likely
|
56°F |
10 to 15 mph
W
|
|
Wednesday
May 20
|
Slight Chance Rain Showers then Partly Sunny
|
66°F |
10 mph
N
|
|
Wednesday Night
May 20
|
Mostly Cloudy
|
48°F |
5 to 10 mph
NE
|
|
Thursday
May 21
|
Mostly Sunny
|
67°F |
10 mph
E
|
|
Thursday Night
May 21
|
Partly Cloudy
|
50°F |
10 mph
E
|
|
Friday
May 22
|
Chance Rain Showers
|
73°F |
10 mph
E
|
|
Friday Night
May 22
|
Chance Showers And Thunderstorms
|
58°F |
5 to 10 mph
E
|
|
Saturday
May 23
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
77°F |
5 mph
S
|
|
Saturday Night
May 23
|
Chance Showers And Thunderstorms
|
60°F |
0 to 5 mph
SW
|
|
Sunday
May 24
|
Partly Sunny then Slight Chance Showers And Thunderstorms
|
82°F |
0 to 5 mph
SW
|
|
Sunday Night
May 24
|
Slight Chance Showers And Thunderstorms
|
63°F |
0 to 5 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Cass County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Cass County.
Largest mapped city population in this region: 17,454.
