Waterloo, IN Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Waterloo, IN in one place.
Mostly sunny, with a high near 92. Heat index values as high as 100. West wind around 2 mph.
Local Weather Overview
This forecast page for Waterloo, IN is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 15, 2026 8:59 AM EDT.
The active forecast window currently covers Jul 16 to Jul 21, 2026 for Waterloo, IN.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 16 to Jul 21, 2026
- Latest sync
- Jul 15, 2026 8:59 AM EDT
- Forecast office
- ILN
- Source
- NOAA / NWS
Daily Outlook
This Week in Waterloo
Thursday looks like the warmest upcoming period in Waterloo at 92 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Tuesday at about 6 to 10 mph NW.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 15, 2026 8:59 AM EDT
- Coverage
- 6 days
- Time zone
- America/Indiana/Indianapolis
- Forecast office
- ILN
- Radar station
- KIND
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 between 7pm and 2am. Mostly cloudy, with a low around 72. Southwest wind around 1 mph. Chance of precipitation is 20%.
A chance of showers and thunderstorms between 8am and 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and thunderstorms. Partly sunny, with a high near 88. Southwest wind 1 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and thunderstorms before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.
A slight chance of rain showers after 2pm. Mostly sunny, with a high near 86.
A slight chance of rain showers before 8pm. Mostly clear, with a low around 67.
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87.
A chance of showers and thunderstorms before 2am, then a chance of showers and thunderstorms. Mostly 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. Partly sunny, with a high near 84. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 61.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Jul 16
|
Mostly Sunny
|
92°F |
2 mph
W
|
|
Thursday Night
Jul 16
|
Slight Chance Showers And Thunderstorms
|
72°F |
1 mph
SW
|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
88°F |
1 to 5 mph
SW
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms then Chance Showers And Thunderstorms
|
71°F |
3 mph
SW
|
|
Saturday
Jul 18
|
Chance Showers And Thunderstorms
|
88°F |
3 to 8 mph
W
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
69°F |
3 to 7 mph
W
|
|
Sunday
Jul 19
|
Mostly Sunny then Slight Chance Rain Showers
|
86°F |
6 mph
NW
|
|
Sunday Night
Jul 19
|
Slight Chance Rain Showers then Mostly Clear
|
67°F |
1 to 5 mph
W
|
|
Monday
Jul 20
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
87°F |
1 to 7 mph
SW
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
69°F |
7 mph
W
|
|
Tuesday
Jul 21
|
Chance Showers And Thunderstorms
|
84°F |
6 to 10 mph
NW
|
|
Tuesday Night
Jul 21
|
Chance Showers And Thunderstorms then Partly Cloudy
|
61°F |
3 to 9 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Waterloo.