Live Weather & Forecast

Weather in Waterloo

Iowa, United States · Real-time conditions & 3-day outlook

Flag of United States
Overcast
11°C
Feels like 8°C
51°F / Feels 46°F
Overcast
Waterloo, Iowa
🌙 Nighttime
Updated: 2026-04-11 21:30
💧
Humidity
83%
💨
Wind
21.2 km/h SE
🌬️
Wind Gust
34 km/h
🌡️
Pressure
1017 mb
👁️
Visibility
16 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
100%
💦
Dew Point
9.7°C
🌐
Wind Degree
144°

Air Quality Index

US EPA: Good UK DEFRA: Low (2)
CO
181.9 μg/m³
NO₂
3.4 μg/m³
O₃
88 μg/m³
SO₂
3.4 μg/m³
PM 2.5
13 μg/m³
PM 10
13.4 μg/m³

Weather Alerts 2

Met · Severe · Immediate
Flood Warning issued April 10 at 8:33PM CDT until April 13 at 4:30PM CDT by NWS Quad Cities IA IL

...The Flood Warning continues for the following rivers in Iowa... Iowa River at Marengo affecting Iowa and Benton Counties. Cedar River near Conesville affecting Louisa and Muscatine Counties. ...The Flood Warning is extended for the following rivers in Iowa... Iowa River at Wapello affecting Louisa County. Iowa River at Oakville affecting Louisa County. * WHAT...Minor flooding is occurring...

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Stay tuned to further developments by listening to your local radio, television, or NOAA Weather Radio for further information. Turn around, don't drown when encountering flooded roads. Most flood deaths...

Effective: 2026-04-10T20:33:00-05:00  ·  Expires: 2026-04-11T20:45:00-05:00
Met · Severe · Immediate
Flood Warning issued April 11 at 10:12AM CDT until April 13 at 9:00AM CDT by NWS Quad Cities IA IL

...The Flood Warning is extended for the following rivers in Iowa... Cedar River near Conesville affecting Muscatine and Louisa Counties. Iowa River at Wapello affecting Louisa County. Iowa River at Oakville affecting Louisa County. ...The Flood Warning continues for the following rivers in Iowa... Iowa River at Marengo affecting Iowa and Benton Counties. * WHAT...Minor flooding is occurring...

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Stay tuned to further developments by listening to your local radio, television, or NOAA Weather Radio for f...

Effective: 2026-04-11T10:12:00-05:00  ·  Expires: 2026-04-12T10:15:00-05:00

Today's Hourly Forecast

24-hour breakdown for Waterloo, Iowa

12 AM
Clear
5°
Clear
💧 58% 💨 9.7 km/h
1 AM
Clear
4°
Clear
💧 67% 💨 10.8 km/h
2 AM
Clear
4°
Clear
💧 81% 💨 10.1 km/h
3 AM
Clear
4°
Clear
💧 88% 💨 9.7 km/h
4 AM
Clear
5°
Clear
💧 88% 💨 9.4 km/h
5 AM
Clear
3°
Clear
💧 83% 💨 9.4 km/h
6 AM
Clear
2°
Clear
💧 84% 💨 10.8 km/h
7 AM
Sunny
3°
Sunny
💧 86% 💨 10.8 km/h
8 AM
Sunny
5°
Sunny
💧 82% 💨 12.6 km/h
9 AM
Sunny
6°
Sunny
💧 76% 💨 16.9 km/h
10 AM
Sunny
9°
Sunny
💧 71% 💨 19.4 km/h
11 AM
Sunny
11°
Sunny
💧 68% 💨 21.6 km/h
12 PM
Sunny
12°
Sunny
💧 69% 💨 19.4 km/h
1 PM
Sunny
13°
Sunny
💧 71% 💨 21.2 km/h
2 PM
Cloudy
13°
Cloudy
💧 77% 💨 24.5 km/h
3 PM
Patchy rain nearby
12°
Patchy rain nearby
💧 84% 💨 28.8 km/h 🌧️ 62%
4 PM
Patchy rain nearby
12°
Patchy rain nearby
💧 86% 💨 26.3 km/h 🌧️ 84%
5 PM
Overcast
12°
Overcast
💧 92% 💨 24.5 km/h
6 PM
Overcast
11°
Overcast
💧 92% 💨 27.7 km/h
7 PM
Overcast
11°
Overcast
💧 92% 💨 25.6 km/h
8 PM
Patchy rain nearby
11°
Patchy rain nearby
💧 91% 💨 23.4 km/h 🌧️ 82%
9 PM
Overcast
11°
Overcast
💧 83% 💨 21.2 km/h
10 PM
Overcast
11°
Overcast
💧 89% 💨 24.5 km/h
11 PM
Cloudy
12°
Cloudy
💧 87% 💨 26.6 km/h

3-Day Forecast

Daily overview for Waterloo, Iowa

Today
Partly Cloudy
Partly Cloudy
14° / 1°
🌧️ 0% chance of rain
💧 Avg. humidity: 81%
💨 Max wind: 28.8 km/h
🌧️ Total precip: 0.04 mm
☀️ UV Index: 0.6
🌅 Sunrise: 06:34 AM
🌇 Sunset: 07:47 PM
🌙 Waning Crescent
🌑 Moon: 42% lit
Sun, Apr 12
Thundery outbreaks in nearby
Thundery outbreaks in nearby
23° / 12°
🌧️ 0% chance of rain
💧 Avg. humidity: 90%
💨 Max wind: 35.6 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 0.9
🌅 Sunrise: 06:33 AM
🌇 Sunset: 07:48 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Thundery outbreaks in nearby
Thundery outbreaks in nearby
21° / 16°
🌧️ 0% chance of rain
💧 Avg. humidity: 97%
💨 Max wind: 32.4 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.3
🌅 Sunrise: 06:31 AM
🌇 Sunset: 07:49 PM
🌙 Waning Crescent
🌑 Moon: 23% lit

Best Time to Visit Waterloo

Plan your trip to Waterloo, United States around the most favorable weather conditions.

Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
← Back to Waterloo 🗓 View Holidays 2026

Frequently Asked Questions

People also ask — answers optimized for search engines and voice queries.

What is the current weather in Waterloo?
Current conditions in Waterloo: Overcast, temperature 11°C, humidity 83%.
What is the best time to visit Waterloo?
The best time to visit Waterloo is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Waterloo?
Waterloo is located at approximately 42.5° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Waterloo?
The wettest period in Waterloo is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Waterloo?
For visits to Waterloo during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Waterloo in?
Waterloo is located in United States, in the state of Iowa.
What are the public holidays in Waterloo in 2026?
View the 2026 public holidays for Waterloo on our Holidays page.
What are the GPS coordinates used for the weather forecast in Waterloo?
The weather forecast for Waterloo uses coordinates 42.4983, -92.3329.