Lake Catherine, IL Weather Forecast
Local 7-day forecast
Widespread Frost then Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Lake Catherine, IL in one place.
Widespread frost before 7am, then a chance of rain showers. Mostly sunny. High near 48, with temperatures falling to around 46 in the afternoon. West wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Lake Catherine, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 18, 2026 12:37 PM CDT.
The active forecast window currently covers Apr 19 to Apr 24, 2026 for Lake Catherine, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 19 to Apr 24, 2026
- Latest sync
- Apr 18, 2026 12:37 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Lake Catherine
Thursday looks like the warmest upcoming period in Lake Catherine at 78 degrees F.
Sunday Night is the coolest period ahead with temperatures near 29 degrees F.
The strongest winds are forecast for Sunday at about 5 to 15 mph W.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 18, 2026 12:37 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers before 7pm, then widespread frost. Mostly clear, with a low around 29. North wind 0 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Widespread frost before 8am. Sunny, with a high near 52. Southeast wind 0 to 10 mph.
Mostly cloudy, with a low around 41.
Mostly sunny, with a high near 71.
Partly cloudy, with a low around 45.
Sunny, with a high near 68.
Mostly clear, with a low around 50.
Mostly sunny, with a high near 78.
Rain showers likely after 7pm. Mostly cloudy, with a low around 58.
Rain showers likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 71.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 44.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Apr 19
|
Widespread Frost then Chance Rain Showers
|
48°F |
5 to 15 mph
W
|
|
Sunday Night
Apr 19
|
Chance Rain Showers then Widespread Frost
|
29°F |
0 to 10 mph
N
|
|
Monday
Apr 20
|
Widespread Frost then Sunny
|
52°F |
0 to 10 mph
SE
|
|
Monday Night
Apr 20
|
Mostly Cloudy
|
41°F |
10 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
71°F |
10 to 15 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy
|
45°F |
5 to 10 mph
NNW
|
|
Wednesday
Apr 22
|
Sunny
|
68°F |
5 mph
ENE
|
|
Wednesday Night
Apr 22
|
Mostly Clear
|
50°F |
5 mph
SE
|
|
Thursday
Apr 23
|
Mostly Sunny
|
78°F |
5 to 15 mph
S
|
|
Thursday Night
Apr 23
|
Rain Showers Likely
|
58°F |
10 mph
S
|
|
Friday
Apr 24
|
Rain Showers Likely
|
71°F |
10 to 15 mph
SSW
|
|
Friday Night
Apr 24
|
Chance Showers And Thunderstorms
|
44°F |
10 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lake Catherine.