Martinsburg, IL Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Martinsburg, IL in one place.
A chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 89. Chance of precipitation is 60%.
Local Weather Overview
This forecast page for Martinsburg, 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: Jul 15, 2026 7:24 AM CDT.
The active forecast window currently covers Jul 17 to Jul 21, 2026 for Martinsburg, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 17 to Jul 21, 2026
- Latest sync
- Jul 15, 2026 7:24 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Martinsburg
Monday looks like the warmest upcoming period in Martinsburg at 93 degrees F.
Monday Night is the coolest period ahead with temperatures near 73 degrees F.
The strongest winds are forecast for Saturday at about 8 mph W.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 15, 2026 7:24 AM 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
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms. Mostly clear, with a low around 74. Chance of precipitation is 60%.
A slight chance of showers and thunderstorms before 7am. Sunny, with a high near 92. Chance of precipitation is 20%.
Mostly clear, with a low around 74.
Sunny, with a high near 91.
Mostly clear, with a low around 74.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73. Chance of precipitation is 20%.
Sunny, with a high near 88.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
89°F |
1 to 5 mph
W
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
74°F |
5 mph
SW
|
|
Saturday
Jul 18
|
Slight Chance Showers And Thunderstorms then Sunny
|
92°F |
8 mph
W
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
74°F |
6 mph
W
|
|
Sunday
Jul 19
|
Sunny
|
91°F |
5 mph
W
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
74°F |
3 mph
SW
|
|
Monday
Jul 20
|
Sunny then Slight Chance Showers And Thunderstorms
|
93°F |
7 mph
SW
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms
|
73°F |
6 mph
NW
|
|
Tuesday
Jul 21
|
Sunny
|
88°F |
5 to 8 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Martinsburg.