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Current weather in Waterloo is broken clouds.

Where can I find the hourly weather forecast for Waterloo?

This page shows hourly weather forecast for Waterloo, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Waterloo updated regularly?

Weather data for Waterloo is updated regularly with the latest available observations and forecasts.

Now · 4:28 PM

Waterloo Weather & Hourly Forecast

United States · Wisconsin · 53594

79°F

Mostly cloudy

Feels like: 80°F

💧 Humidity 68% 🌡 Pressure 29.97 inHg 💨 Wind 9 mph 👁 Visibility 22.4 mi ☁ Clouds 80% ☀️ UV index 1.1 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Waterloo

Today

5:00 PM

Mostly cloudy

78° 💧 0.000 in 💨 8 mph H 71%29.97 inHg

8:00 PM

Mostly clear night

72° 💧 0.000 in 💨 7 mph H 90%30.00 inHg

11:00 PM

Clear night

66° 💧 None 💨 5 mph H 91%30.06 inHg

Tomorrow

2:00 AM

Mostly clear night

64° 💧 None 💨 4 mph H 92%30.09 inHg

5:00 AM

Clear night

62° 💧 None 💨 4 mph H 93%30.06 inHg

8:00 AM

Sunny

65° 💧 None 💨 3 mph H 93%30.09 inHg

11:00 AM

Mostly cloudy

74° 💧 0.002 in 💨 6 mph H 75%30.09 inHg

2:00 PM

Mostly cloudy

77° 💧 None 💨 6 mph H 65%30.09 inHg

5:00 PM

Mostly sunny

76° 💧 None 💨 6 mph H 66%30.06 inHg

8:00 PM

Mostly cloudy night

68° 💧 None 💨 7 mph H 80%30.06 inHg

11:00 PM

Mostly cloudy night

62° 💧 None 💨 4 mph H 86%30.15 inHg

Monday

2:00 AM

Mostly clear night

60° 💧 None 💨 4 mph H 92%30.15 inHg

5:00 AM

Clear night

60° 💧 None 💨 4 mph H 94%30.15 inHg

8:00 AM

Sunny

65° 💧 None 💨 5 mph H 93%30.18 inHg

11:00 AM

Sunny

73° 💧 None 💨 7 mph H 69%30.21 inHg

2:00 PM

Mostly cloudy

77° 💧 None 💨 7 mph H 62%30.15 inHg

Today

5:00 PM

Mostly cloudy

78° 💧 None 💨 8 mph H 71%29.97 inHg

6:00 PM

Partly cloudy

76° 💧 None 💨 8 mph H 78%29.97 inHg

7:00 PM

Mostly sunny

74° 💧 0.000 in 💨 7 mph H 84%30.00 inHg

8:00 PM

Mostly clear night

72° 💧 0.000 in 💨 7 mph H 90%30.00 inHg

9:00 PM

Clear night

70° 💧 None 💨 8 mph H 92%30.03 inHg

10:00 PM

Clear night

68° 💧 None 💨 7 mph H 92%30.03 inHg

11:00 PM

Clear night

66° 💧 None 💨 5 mph H 91%30.06 inHg

Tomorrow

12:00 AM

Partly cloudy night

65° 💧 None 💨 4 mph H 91%30.06 inHg

1:00 AM

Mostly clear night

64° 💧 None 💨 3 mph H 92%30.09 inHg

2:00 AM

Mostly clear night

64° 💧 None 💨 4 mph H 92%30.09 inHg

3:00 AM

Clear night

63° 💧 None 💨 3 mph H 91%30.06 inHg

4:00 AM

Clear night

62° 💧 None 💨 3 mph H 92%30.06 inHg

5:00 AM

Clear night

62° 💧 None 💨 4 mph H 93%30.06 inHg

6:00 AM

Clear night

62° 💧 None 💨 5 mph H 94%30.06 inHg

7:00 AM

Sunny

62° 💧 None 💨 4 mph H 95%30.09 inHg

8:00 AM

Sunny

65° 💧 None 💨 3 mph H 93%30.09 inHg

9:00 AM

Partly cloudy

70° 💧 None 💨 5 mph H 86%30.09 inHg

10:00 AM

Mostly cloudy

73° 💧 None 💨 6 mph H 80%30.09 inHg

11:00 AM

Mostly cloudy

74° 💧 0.001 in 💨 6 mph H 75%30.09 inHg

12:00 PM

Mostly cloudy

75° 💧 0.001 in 💨 5 mph H 71%30.09 inHg

1:00 PM

Mostly cloudy

76° 💧 0.000 in 💨 6 mph H 68%30.09 inHg

2:00 PM

Mostly cloudy

77° 💧 None 💨 6 mph H 65%30.09 inHg

3:00 PM

Mostly cloudy

78° 💧 None 💨 5 mph H 63%30.09 inHg

4:00 PM

Mostly sunny

77° 💧 None 💨 6 mph H 63%30.06 inHg

5:00 PM

Mostly sunny

76° 💧 None 💨 6 mph H 66%30.06 inHg

6:00 PM

Mostly cloudy

74° 💧 None 💨 8 mph H 72%30.06 inHg

7:00 PM

Mostly cloudy

71° 💧 None 💨 8 mph H 78%30.06 inHg

8:00 PM

Mostly cloudy night

68° 💧 None 💨 7 mph H 80%30.06 inHg

9:00 PM

Mostly cloudy night

66° 💧 None 💨 6 mph H 82%30.09 inHg

10:00 PM

Mostly cloudy night

64° 💧 None 💨 5 mph H 84%30.12 inHg

11:00 PM

Mostly cloudy night

62° 💧 None 💨 4 mph H 86%30.15 inHg

Monday

12:00 AM

Clear night

61° 💧 None 💨 4 mph H 88%30.12 inHg

1:00 AM

Clear night

60° 💧 None 💨 4 mph H 90%30.15 inHg

2:00 AM

Mostly clear night

60° 💧 None 💨 4 mph H 92%30.15 inHg

3:00 AM

Clear night

60° 💧 None 💨 4 mph H 93%30.15 inHg

4:00 AM

Clear night

60° 💧 None 💨 4 mph H 93%30.15 inHg

5:00 AM

Clear night

60° 💧 None 💨 4 mph H 94%30.15 inHg

6:00 AM

Clear night

60° 💧 None 💨 4 mph H 95%30.18 inHg

7:00 AM

Sunny

61° 💧 None 💨 4 mph H 95%30.18 inHg

8:00 AM

Sunny

65° 💧 None 💨 5 mph H 93%30.18 inHg

9:00 AM

Sunny

68° 💧 None 💨 5 mph H 87%30.18 inHg

10:00 AM

Mostly sunny

71° 💧 None 💨 6 mph H 77%30.18 inHg

11:00 AM

Sunny

73° 💧 None 💨 7 mph H 69%30.21 inHg

12:00 PM

Partly cloudy

75° 💧 None 💨 7 mph H 65%30.18 inHg

1:00 PM

Mostly cloudy

76° 💧 None 💨 7 mph H 63%30.18 inHg

2:00 PM

Mostly cloudy

77° 💧 None 💨 7 mph H 62%30.15 inHg

3:00 PM

Mostly cloudy

77° 💧 None 💨 7 mph H 62%30.15 inHg

4:00 PM

Overcast

77° 💧 None 💨 8 mph H 63%30.12 inHg

5:00 PM

Overcast

76° 💧 None 💨 8 mph H 64%30.12 inHg

6:00 PM

Overcast

74° 💧 None 💨 8 mph H 70%30.12 inHg

7:00 PM

Overcast

70° 💧 None 💨 8 mph H 74%30.12 inHg

8:00 PM

Mostly cloudy night

67° 💧 None 💨 8 mph H 77%30.12 inHg

9:00 PM

Overcast night

65° 💧 None 💨 8 mph H 82%30.15 inHg

10:00 PM

Overcast night

64° 💧 None 💨 7 mph H 85%30.15 inHg

11:00 PM

Overcast night

63° 💧 None 💨 6 mph H 87%30.18 inHg

Tuesday

12:00 AM

Overcast night

63° 💧 None 💨 7 mph H 88%30.15 inHg

1:00 AM

Overcast night

63° 💧 None 💨 7 mph H 89%30.12 inHg

2:00 AM

Mostly cloudy night

63° 💧 None 💨 7 mph H 91%30.12 inHg

3:00 AM

Overcast night

63° 💧 None 💨 7 mph H 92%30.12 inHg

4:00 AM

Mostly cloudy night

63° 💧 None 💨 8 mph H 90%30.12 inHg

5:00 AM

Overcast night

63° 💧 None 💨 8 mph H 89%30.12 inHg

6:00 AM

Overcast night

63° 💧 None 💨 9 mph H 88%30.09 inHg

7:00 AM

Overcast

63° 💧 None 💨 9 mph H 87%30.09 inHg

10:00 AM

Overcast

69° 💧 None 💨 10 mph H 79%30.09 inHg

1:00 PM

Overcast

75° 💧 None 💨 9 mph H 72%30.06 inHg

4:00 PM

Light rain

78° 💧 None 💨 4 mph H 72%30.00 inHg

7:00 PM

Mostly sunny

74° 💧 None 💨 10 mph H 84%29.94 inHg

10:00 PM

Light rain

74° 💧 None 💨 10 mph H 78%29.94 inHg

Wednesday

1:00 AM

Light rain

74° 💧 None 💨 12 mph H 77%29.91 inHg

4:00 AM

Mostly cloudy night

72° 💧 None 💨 10 mph H 83%29.91 inHg

7:00 AM

Mostly cloudy

71° 💧 None 💨 10 mph H 94%29.94 inHg

10:00 AM

Mostly sunny

77° 💧 None 💨 11 mph H 81%29.94 inHg

1:00 PM

Mostly cloudy

79° 💧 None 💨 15 mph H 59%29.94 inHg

4:00 PM

Sunny

79° 💧 None 💨 14 mph H 57%29.91 inHg

7:00 PM

Sunny

73° 💧 None 💨 8 mph H 73%29.94 inHg

10:00 PM

Partly cloudy night

67° 💧 None 💨 6 mph H 83%29.97 inHg

Thursday

1:00 AM

Clear night

65° 💧 None 💨 8 mph H 84%30.00 inHg

4:00 AM

Mostly clear night

61° 💧 None 💨 6 mph H 86%29.97 inHg

7:00 AM

Partly cloudy

60° 💧 None 💨 6 mph H 88%30.00 inHg

10:00 AM

Sunny

70° 💧 None 💨 7 mph H 74%30.00 inHg

1:00 PM

Mostly sunny

76° 💧 None 💨 11 mph H 55%29.97 inHg

4:00 PM

Sunny

77° 💧 None 💨 11 mph H 51%29.94 inHg

7:00 PM

Sunny

70° 💧 None 💨 4 mph H 72%29.91 inHg

10:00 PM

Clear night

64° 💧 None 💨 4 mph H 83%29.94 inHg

Friday

1:00 AM

Clear night

61° 💧 None 💨 4 mph H 88%29.94 inHg

4:00 AM

Overcast night

60° 💧 None 💨 4 mph H 89%29.94 inHg

7:00 AM

Overcast

60° 💧 None 💨 4 mph H 91%29.94 inHg

1:00 PM

Sunny

78° 💧 None 💨 10 mph H 57%29.91 inHg

7:00 PM

Sunny

71° 💧 None 💨 4 mph H 72%29.83 inHg

Saturday

1:00 AM

Clear night

67° 💧 None 💨 8 mph H 76%29.83 inHg

7:00 AM

Sunny

64° 💧 None 💨 9 mph H 81%29.80 inHg

1:00 PM

Mostly sunny

79° 💧 None 💨 13 mph H 62%29.71 inHg

7:00 PM

Mostly sunny

80° 💧 None 💨 12 mph H 72%29.62 inHg

Sunday

1:00 AM

Light rain

72° 💧 None 💨 10 mph H 94%29.65 inHg

7:00 AM

Moderate rain

64° 💧 None 💨 13 mph H 95%29.77 inHg

1:00 PM

Overcast

64° 💧 None 💨 10 mph H 79%29.94 inHg

7:00 PM

Overcast

64° 💧 None 💨 6 mph H 70%30.00 inHg

Monday

1:00 AM

Clear night

56° 💧 None 💨 9 mph H 78%30.12 inHg

7:00 AM

Sunny

51° 💧 None 💨 6 mph H 84%30.24 inHg

1:00 PM

Sunny

65° 💧 None 💨 6 mph H 53%30.24 inHg

7:00 PM

Sunny

61° 💧 None 💨 2 mph H 70%30.18 inHg

Tuesday

1:00 AM

Clear night

53° 💧 None 💨 4 mph H 87%30.24 inHg

7:00 AM

Sunny

51° 💧 None 💨 4 mph H 91%30.24 inHg

1:00 PM

Partly cloudy

68° 💧 None 💨 5 mph H 52%30.24 inHg

7:00 PM

Sunny

63° 💧 None 💨 1 mph H 73%30.18 inHg

Wednesday

1:00 AM

Clear night

55° 💧 None 💨 3 mph H 88%30.24 inHg

7:00 AM

Sunny

52° 💧 None 💨 1 mph H 92%30.30 inHg

1:00 PM

Mostly sunny

71° 💧 None 💨 4 mph H 56%30.30 inHg

7:00 PM

Sunny

67° 💧 None 💨 0 mph H 72%30.24 inHg

Thursday

1:00 AM

Clear night

57° 💧 None 💨 2 mph H 91%30.27 inHg

7:00 AM

Mostly sunny

55° 💧 None 💨 0 mph H 97%30.27 inHg

1:00 PM

Light rain

74° 💧 None 💨 2 mph H 58%30.27 inHg

7:00 PM

Overcast

69° 💧 None 💨 1 mph H 74%30.24 inHg

Friday

1:00 AM

Partly cloudy night

61° 💧 None 💨 4 mph H 91%30.24 inHg

7:00 AM

Mostly cloudy

59° 💧 None 💨 3 mph H 95%30.21 inHg

1:00 PM

Light rain

76° 💧 None 💨 8 mph H 54%30.12 inHg

7:00 PM

Partly cloudy

68° 💧 None 💨 6 mph H 80%30.00 inHg

Saturday

1:00 AM

Overcast night

62° 💧 None 💨 10 mph H 89%29.91 inHg

7:00 AM

Overcast

62° 💧 None 💨 9 mph H 94%29.85 inHg

1:00 PM

Mostly sunny

73° 💧 None 💨 8 mph H 69%29.83 inHg

7:00 PM

Partly cloudy

68° 💧 None 💨 2 mph H 79%29.83 inHg

Sunday

1:00 AM

Mostly cloudy night

62° 💧 None 💨 3 mph H 91%29.83 inHg

7:00 AM

Partly cloudy

60° 💧 None 💨 9 mph H 95%29.80 inHg

In Waterloo and, more broadly, across the state of Wisconsin: The late afternoon will continue with mostly sunny skies and only a few clouds drifting through. Temperatures are expected to remain mild to warm, ranging from 66 to 76 degrees Fahrenheit. Winds will be light, coming from the east at around 9 mph, with occasional gusts reaching up to 17 mph. As evening approaches, conditions should stay quiet and comfortable, with no precipitation in the forecast. Temperatures will gradually settle into the comfortable range, making for a pleasant evening ahead. Overall, expect clear skies and gentle breezes as night falls.

15-Day Weather Outlook for Waterloo

TomorrowTomorrow

Mostly sunny 78°/62° 💧 None 💨 8 mph

Monday, Sep 7Mon Sep 7

Mostly cloudy 77°/60° 💧 None 💨 9 mph

Tuesday, Sep 8Tue Sep 8

Light rain 78°/63° 💧 0.037 in 💨 10 mph

Wednesday, Sep 9Wed Sep 9

Light rain 79°/71° 💧 0.113 in 💨 15 mph

Thursday, Sep 10Thu Sep 10

Partly cloudy 77°/60° 💧 0.001 in 💨 11 mph

Friday, Sep 11Fri Sep 11

Overcast 78°/60° 💧 None 💨 10 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 79°/64° 💧 None 💨 13 mph

Sunday, Sep 13Sun Sep 13

Moderate rain 80°/64° 💧 0.724 in 💨 13 mph

Monday, Sep 14Mon Sep 14

Overcast 65°/51° 💧 0.001 in 💨 9 mph

Tuesday, Sep 15Tue Sep 15

Partly cloudy 68°/51° 💧 None 💨 5 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 71°/52° 💧 None 💨 4 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 74°/55° 💧 0.002 in 💨 2 mph

Friday, Sep 18Fri Sep 18

Light rain 76°/59° 💧 0.019 in 💨 8 mph

Saturday, Sep 19Sat Sep 19

Partly cloudy 73°/62° 💧 0.356 in 💨 10 mph

Sunday, Sep 20Sun Sep 20

Partly cloudy 68°/60° 💧 0.101 in 💨 9 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Waterloo

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Waterloo

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 5:00 PM

PM2.5 Fine particles Good 5,7µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 6,0µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 86,1µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 0,9µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Waterloo

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 4,4Moderate 🙂Fair

Tomorrow UV 7,0High 😐Moderate

Monday UV 7,1High 😐Moderate

Tuesday UV 6,4High 😐Moderate

Wednesday UV 6,2High 😐Moderate

Thursday UV 6,0High —Unavailable

Friday UV 6,0High —Unavailable

Hourly UV index today

5:00 PMUV 0,6 6:00 PMUV 0,2 7:00 PMUV 0,0

Today's weather health advice Open today's recommendations.

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Waterloo

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · WATERLOO, WISCONSIN

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

93/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 9:04 PM–4:46 AM

☁ Cloud cover 0% Real hourly forecast for the best viewing hour.

☾ Moonlight 30% Waning Crescent · Moon about 41° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 87° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min73%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

AUG 28–SEP 5

AurigidsStart AUG 28 · Peak SEP 1 · End SEP 5 · ZHR 6 · 80% Moon at peak

ACTIVE NOW

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Waterloo were last refreshed today at 4:28 PM. The current forecast period extends through 07/09/2026 at 2:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.