WATERLOO, IA Weather Forecast & Current Conditions

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WATERLOO, IA
Current Weather

8:54 AM CDT SEP 28, 2026
Overcast
63°F
Feels Like: 63°F
Dewpoint: 61°F
Rel. Hum.: 93%
Visibility: 10 miles
Wind: Calm
Pressure: 30.13 inches
Last 72 hours

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WATERLOO, IA
Weather Forecast

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TODAY
Patchy fog this morning. Mostly cloudy. Highs in the lower 70s. Southeast winds around 5 mph.
TONIGHT
Partly cloudy. Lows in the mid 50s. Southeast winds around 5 mph.
TUESDAY
Partly sunny. Highs in the lower 70s. South winds 10 to 15 mph.
TUESDAY NIGHT
Mostly cloudy. A chance of showers in the evening, then showers likely with a slight chance of thunderstorms after midnight. Lows in the lower 60s. South winds 10 to 15 mph. Chance of rain 70 percent.
WEDNESDAY
Showers with a slight chance of thunderstorms. Highs in the lower 70s. South winds 10 to 15 mph. Chance of rain 90 percent.
WEDNESDAY NIGHT
Showers with a chance of thunderstorms. Lows around 60. Chance of rain 90 percent.
THURSDAY
Mostly cloudy. A chance of showers, mainly in the morning. Near steady temperature in the lower 60s. Chance of rain 50 percent.
THURSDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s.
FRIDAY
Mostly sunny. Highs in the mid 60s.
FRIDAY NIGHT
Mostly clear. Lows in the upper 40s.
SATURDAY
Mostly sunny. Highs in the mid 60s.
SATURDAY NIGHT
Partly cloudy. Lows around 50.
SUNDAY
Mostly sunny. Highs in the lower 60s.

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WATERLOO, IA
Infrared Weather Satellite
WATERLOO, IA
NEXRAD Weather Radar
WATERLOO, IA

WATERLOO, IA 3 hourly weather forecast

weather forecast created  7:00 PM CDT  9/27/2026
Monday
28 SEP 2026
WATERLOO, IA weather forecast Day 1, 0 hours 1 AM 59° 60° Mostly Cloudy 1%

0% Thunder
( 2% severe)
  CALM 100% 59°
Low 58° WATERLOO, IA weather forecast Day 1, 3 hours 4 AM 59° 60° Mostly Cloudy   CALM 100% 59°
High 72° WATERLOO, IA weather forecast Day 1, 6 hours 7 AM 59° 60° Mostly Cloudy 1%

0% Thunder
( 1% severe)
  CALM 100% 59°

Mostly Cloudy



WATERLOO, IA weather forecast Day 1, 9 hours 10 AM 64° 66° Mostly Cloudy   CALM 87% 60°
WATERLOO, IA weather forecast Day 1, 12 hours 1 PM 69° 69° Mostly Cloudy 1%

0% Thunder
( 1% severe)
SSE   5 73% 60°
WATERLOO, IA weather forecast Day 1, 15 hours 4 PM 71° 71° Partly Cloudy SSE   6 66% 59°
WATERLOO, IA weather forecast Day 1, 18 hours 7 PM 67° 67° Partly Cloudy 1%

0% Thunder
( 1% severe)
SE   6 75% 59°
WATERLOO, IA weather forecast Day 1, 21 hours 10 PM 61° 61° Partly Cloudy SSE   6 93% 59°
Tuesday
29 SEP 2026
WATERLOO, IA weather forecast Day 2, 0 hours 1 AM 58° 57° Partly Cloudy 1%

0% Thunder
( 1% severe)
SSE   6 96% 57°
Low 54° WATERLOO, IA weather forecast Day 2, 3 hours 4 AM 56° 54° Partly Cloudy SSE   7 93% 54°
High 71° WATERLOO, IA weather forecast Day 2, 6 hours 7 AM 55° 53° Mostly Cloudy 1%

0% Thunder
( 1% severe)
SSE   7 93% 53°

Mostly Cloudy

Chance of Rain

WATERLOO, IA weather forecast Day 2, 9 hours 10 AM 63° 62° Mostly Cloudy SSE   10 75% 55°
WATERLOO, IA weather forecast Day 2, 12 hours 1 PM 69° 69° Mostly Cloudy 30%
RAIN
>2 in
0% Thunder
( 5% severe)
SSE   13 66% 57°
WATERLOO, IA weather forecast Day 2, 15 hours 4 PM 70° 70° Mostly Cloudy SSE   13 68% 59°
WATERLOO, IA weather forecast Day 2, 18 hours 7 PM 67° 67° Mostly Cloudy 45%
RAIN
1–2 in
0% Thunder
( 14% severe)
SSE   12 75% 59°
WATERLOO, IA weather forecast Day 2, 21 hours 10 PM 65° 65° Mostly Cloudy SSE   12 87% 61°

WATERLOO, IA extended weather forecast

Wednesday
30 SEP 2026
Thursday
1 OCT 2026
Friday
2 OCT 2026
Saturday
3 OCT 2026
Sunday
4 OCT 2026
Low 61° Low 55° Low 41° Low 45° Low 48°
High 66° High 65° High 66° High 66° High 68°
WATERLOO, IA weather forecast Day 3 WATERLOO, IA weather forecast Day 4 WATERLOO, IA weather forecast Day 5 WATERLOO, IA weather forecast Day 6 WATERLOO, IA weather forecast Day 7
Overcast
93% Rain
Overcast
83% Rain
Clear
7% Rain
Mostly Cloudy
28% Rain
Partly Cloudy
31% Rain
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