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 2:10 PM CDTSaturday 2:10 PM

°F °C
Regional Observations →
91°F

Clear

  • 93° / 73° High / Low
  • 98° Feels Like
  • 0% Chance of Rain

Wind

12 mph

G 18 mph

WSW

UV Index

10

Very High

Humidity

53%

Dew 71°F

Sun

5:50 AM · 8:21 PM

Rise · Set

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

5-Day Outlook

Through Wednesday

Local Radar →

Today

93° 73°

Mostly Cloudy

Overnight: Isolated T-storm

Detailed forecast

Today

Mostly sunny, with a high near 92. Heat index values as high as 102. West wind around 9 mph.

Night

A slight chance of showers and thunderstorms between 1am and 4am. Partly cloudy, with a low around 73. West wind 3 to 7 mph. Chance of precipitation is 20%.

Sunday

89° 71°

Chance of Thunderstorms

Overnight: Isolated T-storm

Detailed forecast

Sunday

A chance of showers and thunderstorms between 11am and 3pm, then showers and thunderstorms likely. Mostly sunny, with a high near 88. Heat index values as high as 100. North wind around 3 mph. Chance of precipitation is 60%.

Night

A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. East wind around 3 mph. Chance of precipitation is 40%.

Monday

91° 75°

Partly Sunny

Overnight: Partly Cloudy

Detailed forecast

Monday

Sunny, with a high near 91. South wind around 2 mph.

Night

Mostly clear, with a low around 75.

Tuesday

93° 68°

Mostly Sunny

Overnight: Mostly Clear

Detailed forecast

Tuesday

Sunny, with a high near 93.

Night

Mostly clear, with a low around 68.

Wednesday

84° 64°

Mostly Sunny

Overnight: Mostly Clear

Detailed forecast

Wednesday

Sunny, with a high near 84.

Night

Mostly clear, with a low around 63.

Waterloo, IL Weather Analysis Tools