Somonauk, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Somonauk, IL in one place.
Showers and thunderstorms likely before 4pm, then showers and thunderstorms likely. Cloudy, with a high near 74. South southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for Somonauk, 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 15, 2026 2:47 PM CDT.
The active forecast window currently covers Apr 15 to Apr 21, 2026 for Somonauk, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 15 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 2:47 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Somonauk
Friday looks like the warmest upcoming period in Somonauk at 80 degrees F.
Saturday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Friday at about 5 to 20 mph SSE.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 2:47 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely before 10pm, then showers and thunderstorms between 10pm and 4am, then a chance of showers and thunderstorms. Cloudy, with a low around 60. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
A chance of showers and thunderstorms before 1pm, then showers and thunderstorms likely. Partly sunny, with a high near 71. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms likely before 7pm. Partly cloudy, with a low around 53. East wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.
Partly sunny, with a high near 80. South southeast wind 5 to 20 mph, with gusts as high as 30 mph.
Showers and thunderstorms after 7pm. Mostly cloudy, with a low around 50. Chance of precipitation is 90%.
Showers and thunderstorms. Partly sunny, with a high near 63.
A chance of rain showers before 1am. Partly cloudy, with a low around 34.
Mostly sunny, with a high near 52.
Patchy frost after 5am. Mostly clear, with a low around 34.
Patchy frost before 7am. Sunny, with a high near 62.
Partly cloudy, with a low around 46.
Mostly sunny, with a high near 71.
A slight chance of rain showers after 7pm. Mostly clear, with a low around 51.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Apr 15
|
Showers And Thunderstorms Likely
|
74°F |
15 mph
SSW
|
|
Tonight
Apr 15
|
Showers And Thunderstorms Likely then Showers And Thunderstorms
|
60°F |
10 to 15 mph
SSW
|
|
Thursday
Apr 16
|
Chance Showers And Thunderstorms
|
71°F |
10 to 15 mph
W
|
|
Thursday Night
Apr 16
|
Showers And Thunderstorms Likely then Partly Cloudy
|
53°F |
5 mph
E
|
|
Friday
Apr 17
|
Partly Sunny
|
80°F |
5 to 20 mph
SSE
|
|
Friday Night
Apr 17
|
Showers And Thunderstorms
|
50°F |
15 mph
SSW
|
|
Saturday
Apr 18
|
Showers And Thunderstorms
|
63°F |
15 to 20 mph
WNW
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
34°F |
10 to 20 mph
WNW
|
|
Sunday
Apr 19
|
Mostly Sunny
|
52°F |
10 to 20 mph
WNW
|
|
Sunday Night
Apr 19
|
Mostly Clear then Patchy Frost
|
34°F |
5 to 15 mph
WNW
|
|
Monday
Apr 20
|
Patchy Frost then Sunny
|
62°F |
5 to 15 mph
SW
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
46°F |
10 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
71°F |
10 to 15 mph
SW
|
|
Tuesday Night
Apr 21
|
Slight Chance Rain Showers
|
51°F |
10 to 15 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Somonauk.