Local Forecast

Waterloo, IL Weather Forecast & Alerts

Current conditions, 5-day forecast, active weather alerts for Waterloo, IL

Active Alerts 1 active

Hour-by-Hour  Current Observation

Saturday 11:53 AM CDTSaturday 11:53 AM

°F °C
Regional Observations →
84°F

Clear

  • 89° / 71° High / Low
  • 90° Feels Like
  • 0% Chance of Rain

Wind

5 mph

N

UV Index

10

Very High

Humidity

63%

Dew 71°F

Sun

6:09 AM · 8:02 PM

Rise · Set

Source: CAHOKIA/ST LOUIS (KCPS). Slider scrubs the next 12 hours.

5-Day Outlook

Through Wednesday

Local Radar →

Saturday

89° 71°

Mostly Sunny

Overnight: Mostly Clear

Detailed forecast

Saturday

Sunny, with a high near 89. Heat index values as high as 102. West wind around 3 mph.

Night

Clear, with a low around 70. Southeast wind around 3 mph.

Sunday

91° 73°

Mostly Sunny

Overnight: Mostly Clear

Detailed forecast

Sunday

Sunny, with a high near 91. Heat index values as high as 105. South wind 3 to 8 mph.

Night

Mostly clear, with a low around 73. South wind around 8 mph.

Monday

93° 75°

Mostly Sunny

Overnight: Mostly Clear

Detailed forecast

Monday

Sunny, with a high near 93.

Night

Mostly clear, with a low around 75.

Tuesday

93° 75°

Partly Sunny

Overnight: Chance of Scattered Thunderstorms

Detailed forecast

Tuesday

Sunny, with a high near 94.

Night

A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 75. Chance of precipitation is 20%.

Wednesday

89° 71°

Chance of Thunderstorms

Overnight: Chance of Thunderstorms

Detailed forecast

Wednesday

A slight chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 30%.

Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 50%.

Waterloo, IL Weather Analysis Tools