Pittsburg, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Pittsburg, IL in one place.
Showers and thunderstorms. Partly sunny. High near 62, with temperatures falling to around 56 in the afternoon. West wind around 16 mph. Chance of precipitation is 90%.
Local Weather Overview
This forecast page for Pittsburg, 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 16, 2026 1:16 PM CDT.
The active forecast window currently covers Apr 18 to Apr 22, 2026 for Pittsburg, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 18 to Apr 22, 2026
- Latest sync
- Apr 16, 2026 1:16 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Pittsburg
Wednesday looks like the warmest upcoming period in Pittsburg at 76 degrees F.
Saturday Night is the coolest period ahead with temperatures near 38 degrees F.
The strongest winds are forecast for Saturday at about 16 mph W.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 16, 2026 1:16 PM CDT
- Coverage
- 5 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
A chance of rain showers before 1am. Mostly clear, with a low around 38. Chance of precipitation is 30%.
Sunny, with a high near 62.
Mostly clear, with a low around 40.
Sunny, with a high near 67.
Mostly clear, with a low around 50.
Mostly sunny, with a high near 73.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 53. Chance of precipitation is 20%.
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Sunny, with a high near 76. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 55. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 18
|
Showers And Thunderstorms
|
62°F |
16 mph
W
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
38°F |
6 to 13 mph
W
|
|
Sunday
Apr 19
|
Sunny
|
62°F |
6 to 14 mph
W
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
40°F |
5 to 8 mph
NE
|
|
Monday
Apr 20
|
Sunny
|
67°F |
5 to 9 mph
S
|
|
Monday Night
Apr 20
|
Mostly Clear
|
50°F |
8 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
73°F |
7 to 13 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy then Slight Chance Rain Showers
|
53°F |
9 mph
SW
|
|
Wednesday
Apr 22
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
76°F |
6 to 10 mph
SW
|
|
Wednesday Night
Apr 22
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
55°F |
8 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Pittsburg.