Waterloo, IA Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Waterloo, IA in one place.
Rain showers likely before 10am, then showers and thunderstorms likely. Mostly cloudy, with a high near 81. South wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for Waterloo, IA 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: Aug 27, 2026 6:21 PM CDT.
The active forecast window currently covers Aug 29 to Sep 2, 2026 for Waterloo, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 2, 2026
- Latest sync
- Aug 27, 2026 6:21 PM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Waterloo
Sunday looks like the warmest upcoming period in Waterloo at 90 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 70 degrees F.
The strongest winds are forecast for Saturday at about 10 to 15 mph S.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 27, 2026 6:21 PM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- DMX
- Radar station
- KDMX
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 before 7pm. Partly cloudy, with a low around 71. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 90. Chance of precipitation is 20%.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88. Chance of precipitation is 30%.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
A slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
A chance of showers and thunderstorms after 7pm. Mostly clear, with a low around 70.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Showers And Thunderstorms Likely
|
81°F |
10 to 15 mph
S
|
|
Saturday Night
Aug 29
|
Chance Showers And Thunderstorms then Partly Cloudy
|
71°F |
15 mph
SSE
|
|
Sunday
Aug 30
|
Slight Chance Showers And Thunderstorms
|
90°F |
10 to 14 mph
S
|
|
Sunday Night
Aug 30
|
Partly Cloudy then Chance Showers And Thunderstorms
|
74°F |
10 to 14 mph
S
|
|
Monday
Aug 31
|
Chance Showers And Thunderstorms
|
88°F |
7 to 12 mph
SSW
|
|
Monday Night
Aug 31
|
Partly Cloudy then Chance Showers And Thunderstorms
|
71°F |
6 mph
S
|
|
Tuesday
Sep 1
|
Chance Showers And Thunderstorms
|
87°F |
6 mph
S
|
|
Tuesday Night
Sep 1
|
Slight Chance Showers And Thunderstorms
|
70°F |
5 mph
ESE
|
|
Wednesday
Sep 2
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
87°F |
6 mph
S
|
|
Wednesday Night
Sep 2
|
Chance Showers And Thunderstorms
|
70°F |
5 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Waterloo.
