Saint Jacob, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Saint Jacob, IL in one place.
Showers and thunderstorms likely. Mostly cloudy, with a high near 82. Southwest wind around 10 mph. Chance of precipitation is 60%.
Local Weather Overview
This forecast page for Saint Jacob, 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: Jun 8, 2026 7:06 PM CDT.
The active forecast window currently covers Jun 8 to Jun 14, 2026 for Saint Jacob, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 8 to Jun 14, 2026
- Latest sync
- Jun 8, 2026 7:06 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Saint Jacob
Wednesday looks like the warmest upcoming period in Saint Jacob at 93 degrees F.
Sunday Night is the coolest period ahead with temperatures near 63 degrees F.
The strongest winds are forecast for Thursday at about 9 to 20 mph S.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 8, 2026 7:06 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
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 7pm, then showers and thunderstorms likely between 7pm and 10pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South wind 3 to 9 mph. Chance of precipitation is 60%.
A chance of rain showers before 10am, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 89. Heat index values as high as 103. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.
Mostly clear, with a low around 75. Heat index values as high as 105. Southwest wind 5 to 8 mph.
Sunny, with a high near 93. Southwest wind 6 to 16 mph.
A slight chance of showers and thunderstorms between 7pm and 1am. Mostly clear, with a low around 75. Chance of precipitation is 20%.
A slight chance of rain showers between 7am and 10am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms between 7pm and 1am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 80%.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
A slight chance of rain showers after 1am. Mostly clear, with a low around 65. Chance of precipitation is 20%.
A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 63. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Jun 8
|
Showers And Thunderstorms Likely
|
82°F |
10 mph
SW
|
|
Tonight
Jun 8
|
Showers And Thunderstorms Likely
|
72°F |
3 to 9 mph
S
|
|
Tuesday
Jun 9
|
Slight Chance Showers And Thunderstorms
|
89°F |
5 to 10 mph
SW
|
|
Tuesday Night
Jun 9
|
Mostly Clear
|
75°F |
5 to 8 mph
SW
|
|
Wednesday
Jun 10
|
Sunny
|
93°F |
6 to 16 mph
SW
|
|
Wednesday Night
Jun 10
|
Slight Chance Showers And Thunderstorms
|
75°F |
9 to 16 mph
S
|
|
Thursday
Jun 11
|
Chance Showers And Thunderstorms
|
92°F |
9 to 20 mph
S
|
|
Thursday Night
Jun 11
|
Chance Showers And Thunderstorms then Showers And Thunderstorms
|
69°F |
6 to 18 mph
W
|
|
Friday
Jun 12
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
84°F |
7 mph
NW
|
|
Friday Night
Jun 12
|
Mostly Clear then Slight Chance Rain Showers
|
65°F |
0 to 5 mph
SW
|
|
Saturday
Jun 13
|
Slight Chance Showers And Thunderstorms
|
86°F |
2 to 9 mph
S
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
68°F |
2 to 7 mph
SW
|
|
Sunday
Jun 14
|
Chance Showers And Thunderstorms
|
83°F |
6 to 12 mph
N
|
|
Sunday Night
Jun 14
|
Chance Showers And Thunderstorms
|
63°F |
5 to 10 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Saint Jacob.