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Waterloo, United States Snapshot 2026
Where is Waterloo?
Waterloo, United States
- Continent
- Americas
- Country
- United States
- City
- Waterloo
- Population
- 68.5K
- Elevation
- 261 m
- Coordinates
- 42.49°, -92.34°
Waterloo is a city in United States with a population of approximately 68.5K. Average temperatures range from -10°C (13°F) in January to 28°C (83°F) in July. The best time to visit is May, June, July, August, September. The city sits at an elevation of 261 m above sea level.
Time in Waterloo right now
Open full time & time zone page 12:45 45
Monday, June 15, 2026
IANA time zone
America/Chicago
Daylight saving
DST in effect
CST / CDT
Next DST change
November 1
backward -1h
Live weather in Waterloo
Daylight in Waterloo today
View full sunrise & sunset page Sunrise
Sunset
Day length
15h 17m
Climate normals for Waterloo
Long-term monthly averages based on historical data.
January
Poor 
February
Poor March
Poor April
Fair May best
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Fair November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | -2°C / -10°C | -7°C / -16°C | 7days (41 mm) Good | 5.6h Fair | 76% Humid | 2.4 Moderate | Poor | View Details |
| February | 1°C / -9°C | -4°C / -15°C | 6days (37 mm) Good | 7.4h Good | 71% Muggy | 3.6 Moderate | Poor | View Details |
| March | 9°C / -1°C | 5°C / -6°C | 10days (81 mm) Wet | 7.9h Good | 66% Muggy | 4.4 Moderate | Poor | View Details |
| April | 15°C / 4°C | 12°C / 0°C | 12days (102 mm) Wet | 8.8h Good | 64% Muggy | 5.3 High | Fair | View Details |
| May best | 22°C / 11°C | 21°C / 9°C | 12days (140 mm) Wet | 9.9h Good | 67% Muggy | 6.8 High | Good | View Details |
| June best | 28°C / 18°C | 29°C / 17°C | 11days (118 mm) Wet | 12h Excellent | 68% Muggy | 7 High | Excellent | View Details |
| July best | 28°C / 19°C | 31°C / 20°C | 10days (115 mm) Wet | 12.1h Excellent | 75% Muggy | 7.1 Very High | Excellent | View Details |
| August best | 27°C / 18°C | 29°C / 19°C | 9days (92 mm) Wet | 11.3h Excellent | 73% Muggy | 6.6 High | Excellent | View Details |
| September best | 25°C / 15°C | 25°C / 14°C | 9days (99 mm) Wet | 9.7h Good | 69% Muggy | 5.5 High | Excellent | View Details |
| October | 17°C / 8°C | 14°C / 5°C | 9days (96 mm) Wet | 7.5h Good | 65% Muggy | 3.9 Moderate | Fair | View Details |
| November | 9°C / 0°C | 5°C / -4°C | 6days (51 mm) Good | 6.4h Fair | 69% Muggy | 2.6 Moderate | Poor | View Details |
| December | 2°C / -6°C | -3°C / -11°C | 6days (39 mm) Good | 5.4h Fair | 72% Muggy | 2 Low | Poor | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: -2°C / -10°C . Feb: 1°C / -9°C . Mar: 9°C / -1°C . Apr: 15°C / 4°C . May: 22°C / 11°C . Jun: 28°C / 18°C . Jul: 28°C / 19°C . Aug: 27°C / 18°C . Sep: 25°C / 15°C . Oct: 17°C / 8°C . Nov: 9°C / 0°C . Dec: 2°C / -6°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 41 mm. Feb: 37 mm. Mar: 81 mm. Apr: 102 mm. May: 140 mm. Jun: 118 mm. Jul: 115 mm. Aug: 92 mm. Sep: 99 mm. Oct: 96 mm. Nov: 51 mm. Dec: 39 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 76%. Feb: 71%. Mar: 66%. Apr: 64%. May: 67%. Jun: 68%. Jul: 75%. Aug: 73%. Sep: 69%. Oct: 65%. Nov: 69%. Dec: 72%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 22 km/h . Feb: 25 km/h . Mar: 25 km/h . Apr: 27 km/h . May: 22 km/h . Jun: 21 km/h . Jul: 18 km/h . Aug: 18 km/h . Sep: 20 km/h . Oct: 24 km/h . Nov: 23 km/h . Dec: 23 km/h .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 4. Mar: UV 4. Apr: UV 5. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 7. Sep: UV 6. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Frequently Asked Questions
Waterloo has a population of approximately 68.5K.
The best months to visit Waterloo are May, June, July, August, September, when temperatures are pleasant and rainfall is lower.
Waterloo receives approximately 1011mm of rainfall annually across 107 rainy days.
Waterloo is located in United States, in the Americas region.
Waterloo sits at an elevation of 261 m (856 ft) above sea level.