Simpson, IL Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Simpson, IL in one place.
A chance of showers and thunderstorms. Mostly cloudy. Low around 71, with temperatures rising to around 73 overnight. South southeast wind around 3 mph. Chance of precipitation is 50%.
Local Weather Overview
This forecast page for Simpson, 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 5:37 AM CDT.
The active forecast window currently covers Jun 8 to Jun 14, 2026 for Simpson, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 8 to Jun 14, 2026
- Latest sync
- Jun 8, 2026 5:37 AM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Simpson
Wednesday looks like the warmest upcoming period in Simpson at 91 degrees F.
Friday Night is the coolest period ahead with temperatures near 70 degrees F.
The strongest winds are forecast for Thursday at about 3 to 12 mph SSW.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 8, 2026 5:37 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- PAH
- Radar station
- KPAH
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 7am, then showers and thunderstorms between 7am and 1pm, then showers and thunderstorms likely between 1pm and 2pm, then showers and thunderstorms between 2pm and 3pm, then showers and thunderstorms likely. Mostly cloudy. High near 84, with temperatures falling to around 82 in the afternoon. South wind 3 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.
Showers and thunderstorms before 7pm, then showers and thunderstorms likely between 7pm and 10pm, then showers and thunderstorms likely between 10pm and 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers and thunderstorms likely. Mostly cloudy, with a low around 72. South wind 3 to 8 mph. Chance of precipitation is 70%.
A chance of showers and thunderstorms before 4pm. Partly sunny, with a high near 89. Southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Mostly clear, with a low around 74. South southwest wind 3 to 8 mph.
Sunny, with a high near 91. South southwest wind 3 to 10 mph, with gusts as high as 20 mph.
Mostly clear, with a low around 75. South southwest wind 3 to 9 mph, with gusts as high as 18 mph.
A chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 90. South southwest wind 3 to 12 mph, with gusts as high as 21 mph.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 72. Southwest wind 2 to 9 mph, with gusts as high as 18 mph.
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Northwest wind 2 to 6 mph.
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. North northeast wind 0 to 3 mph.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 89. South wind 0 to 6 mph.
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 70. South wind 0 to 3 mph.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 87. West southwest wind 1 to 7 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jun 8
|
Chance Showers And Thunderstorms
|
71°F |
3 mph
SSE
|
|
Monday
Jun 8
|
Chance Showers And Thunderstorms then Showers And Thunderstorms
|
84°F |
3 to 9 mph
S
|
|
Monday Night
Jun 8
|
Showers And Thunderstorms
|
72°F |
3 to 8 mph
S
|
|
Tuesday
Jun 9
|
Chance Showers And Thunderstorms
|
89°F |
6 to 10 mph
SW
|
|
Tuesday Night
Jun 9
|
Mostly Clear
|
74°F |
3 to 8 mph
SSW
|
|
Wednesday
Jun 10
|
Sunny
|
91°F |
3 to 10 mph
SSW
|
|
Wednesday Night
Jun 10
|
Mostly Clear
|
75°F |
3 to 9 mph
SSW
|
|
Thursday
Jun 11
|
Chance Showers And Thunderstorms
|
90°F |
3 to 12 mph
SSW
|
|
Thursday Night
Jun 11
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
72°F |
2 to 9 mph
SW
|
|
Friday
Jun 12
|
Chance Showers And Thunderstorms
|
89°F |
2 to 6 mph
NW
|
|
Friday Night
Jun 12
|
Chance Showers And Thunderstorms
|
70°F |
0 to 3 mph
NNE
|
|
Saturday
Jun 13
|
Chance Rain Showers then Chance Showers And Thunderstorms
|
89°F |
0 to 6 mph
S
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
70°F |
0 to 3 mph
S
|
|
Sunday
Jun 14
|
Chance Showers And Thunderstorms
|
87°F |
1 to 7 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Simpson.