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 82. South wind 1 to 6 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: Apr 16, 2026 11:14 PM EDT.
The active forecast window currently covers Apr 17 to Apr 23, 2026 for Waterloo, IN.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 17 to Apr 23, 2026
- Latest sync
- Apr 16, 2026 11:14 PM EDT
- Forecast office
- ILN
- Source
- NOAA / NWS
Daily Outlook
This Week in Waterloo
Friday looks like the warmest upcoming period in Waterloo at 82 degrees F.
Sunday Night is the coolest period ahead with temperatures near 33 degrees F.
The strongest winds are forecast for Sunday at about 6 to 14 mph W.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 16, 2026 11:14 PM EDT
- Coverage
- 7 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 8pm and 2am, then showers and thunderstorms likely. Partly cloudy, with a low around 62. South wind 5 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms. Mostly cloudy, with a high near 73. Southwest wind 8 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and thunderstorms likely. Mostly cloudy, with a low around 38. Northwest wind 6 to 12 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
A slight chance of rain showers before 8am. Mostly sunny, with a high near 56. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Mostly clear, with a low around 33.
Sunny, with a high near 57.
Mostly clear, with a low around 42.
Mostly sunny, with a high near 74.
Partly cloudy, with a low around 54.
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 73.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 51.
A slight chance of rain showers. Mostly sunny, with a high near 73.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 17
|
Mostly Sunny
|
82°F |
1 to 6 mph
S
|
|
Friday Night
Apr 17
|
Slight Chance Showers And Thunderstorms
|
62°F |
5 to 8 mph
S
|
|
Saturday
Apr 18
|
Showers And Thunderstorms
|
73°F |
8 to 13 mph
SW
|
|
Saturday Night
Apr 18
|
Showers And Thunderstorms Likely
|
38°F |
6 to 12 mph
NW
|
|
Sunday
Apr 19
|
Slight Chance Rain Showers then Mostly Sunny
|
56°F |
6 to 14 mph
W
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
33°F |
2 to 12 mph
N
|
|
Monday
Apr 20
|
Sunny
|
57°F |
5 mph
NW
|
|
Monday Night
Apr 20
|
Mostly Clear
|
42°F |
5 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
74°F |
5 to 13 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy
|
54°F |
6 to 10 mph
SW
|
|
Wednesday
Apr 22
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
73°F |
5 to 8 mph
W
|
|
Wednesday Night
Apr 22
|
Slight Chance Showers And Thunderstorms
|
51°F |
2 to 6 mph
N
|
|
Thursday
Apr 23
|
Slight Chance Rain Showers
|
73°F |
2 to 7 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Waterloo.