Weather Tomorrow in Waterloo, IA
Wednesday, September 9, 2026
Clear
Precip chance
86%
Wind
5-7 mph
Humidity
81%
Feels like
79–68°F
Rain forecast
Rain likely starts around 5 AM and may continue until 10 AM. Peak chance: 86% around 6 AM.
Data source: National Weather Service (NOAA) · Updated 19 min ago
Tomorrow by Hour
66°Temperature trend81°
| Time | Temp | Condition | Rain % | Wind | ||
|---|---|---|---|---|---|---|
| 5 AM☽ | 72°F | Showers And Thunderstorms | 85% | 7 mph S | ||
| 6 AM☽ | 72°F | Showers And Thunderstorms | 86% | 6 mph S | ||
| 7 AM☽ | 72°F | Patchy Fog | 85% | 6 mph SSW | ||
| 8 AM☽ | 72°F | Patchy Fog | 80% | 6 mph SW | ||
| 9 AM☽ | 72°F | Showers And Thunderstorms Likely | 68% | 6 mph SW | ||
| 10 AM☽ | 72°F | Patchy Fog | 49% | 6 mph SW | ||
| 11 AM | 71°F | Patchy Fog | 25% | 5 mph SW | ||
| 12 PM | 71°F | Patchy Fog | 9% | 5 mph WSW | ||
| 1 PM | 71°F | Patchy Fog | 12% | 5 mph W | ||
| 2 PM | 73°F | Mostly Cloudy | 9% | 5 mph WNW | ||
| 3 PM | 74°F | Mostly Cloudy | 7% | 6 mph NW | ||
| 4 PM | 76°F | Partly Sunny | 6% | 6 mph NW | ||
| 5 PM | 77°F | Partly Sunny | 0% | 6 mph NW | ||
| 6 PM | 78°F | Mostly Sunny | 1% | 6 mph NW | ||
| 7 PM | 80°F | Mostly Sunny | 1% | 6 mph NW | ||
| 8 PM | 80°F | Mostly Sunny | 0% | 6 mph NW | ||
| 9 PM | 81°F | Sunny | 0% | 7 mph WNW | ||
| 10 PM | 79°F | Sunny | 0% | 6 mph WNW | ||
| 11 PM☽ | 78°F | Mostly Clear | 0% | 6 mph WNW | ||
| 12 AM☽ | 75°F | Mostly Clear | 0% | 6 mph WNW | ||
| 1 AM☽ | 72°F | Mostly Clear | 0% | 6 mph WNW | ||
| 2 AM☽ | 70°F | Mostly Clear | 0% | 5 mph WNW | ||
| 3 AM☽ | 68°F | Mostly Clear | 0% | 5 mph NW | ||
| 4 AM☽ | 66°F | Mostly Clear | 1% | 5 mph NW | ||
Precipitation Timeline
100%
50%
86%
5a11a5p11p
<20%20-50%50-70%>70%
What to Wear Tomorrow
Hot — wear breathable, light clothing
Clothing
- • Light t-shirt or tank top
- • Shorts or light skirt
- • Hat for sun protection
Footwear
Sandals or breathable sneakers
Accessories
- • Umbrella
- • Sunscreen
Conditions
High: 81°F
Low: 66°F
Wind: 5-7 mph
Rain: 86%
Rain expected around 5 AM — carry an umbrella.
Best Time to Be Outside Tomorrow
12 PM – 1 PM
Excellent conditions for outdoor activities (dry, comfortable temp, light wind, daylight)
5a11a5p11p
More for Waterloo, IA
- Will it rain tomorrow in Waterloo?
- What time will it rain tomorrow in Waterloo?
- Weather tomorrow by hour in Waterloo
- Heat index tomorrow by zip code near Waterloo
- Dew point tomorrow by zip code near Waterloo
- Wind chill tomorrow by zip code near Waterloo
- Snow forecast tomorrow by zip code near Waterloo
- What to wear tomorrow in Waterloo
- Best time to be outside tomorrow in Waterloo
Forecast by ZIP in Waterloo
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Frequently Asked Questions
What is the weather forecast for tomorrow in Waterloo, IA?
Tomorrow in Waterloo: High of 81°F, Low of 66°F. Clear with 86% chance of precipitation. Wind 5-7 mph.
Will it rain tomorrow in Waterloo?
Rain likely starts around 5 AM and may continue until 10 AM. Peak chance: 86% around 6 AM.
What should I wear tomorrow in Waterloo?
With a high of 81°F and low of 66°F, check our "What to Wear" section above for specific clothing recommendations based on temperature, wind, and precipitation.
How accurate is this forecast?
Our forecasts come directly from the National Weather Service (NOAA), which provides some of the most accurate weather predictions available. Tomorrow forecasts are generally 80-90% accurate, with accuracy decreasing the further out you look. Data is refreshed every 30 minutes.