NWS Forecast for Martinsburg WV

National Weather Service Forecast for: Martinsburg WV
Issued by: National Weather Service Baltimore, MD/Washington, D.C.

Updated: 2:22 am EDT Jun 30, 2026

Overnight Patchy Fog	Tuesday Patchy Fog then Mostly Sunny	Tuesday Night Mostly Clear	Wednesday Sunny then Slight Chance T-storms	Wednesday Night Mostly Clear	Thursday Hot	Thursday Night Mostly Clear	Friday Hot	Friday Night Slight Chance T-storms
Lo 68 °F	Hi 93 °F	Lo 71 °F	Hi 100 °F	Lo 73 °F	Hi 104 °F	Lo 75 °F	Hi 104 °F	Lo 73 °F

Heat Advisory
Extreme Heat Watch

Overnight	Patchy fog after 5am. Otherwise, mostly clear, with a low around 68. Calm wind.
Tuesday	Patchy fog before 7am. Otherwise, sunny, with a high near 93. South wind 5 to 10 mph.
Tuesday Night	Mostly clear, with a low around 71. South wind 5 to 9 mph.
Wednesday	A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 100. Heat index values as high as 110. Calm wind becoming west around 5 mph. Chance of precipitation is 20%.
Wednesday Night	Mostly clear, with a low around 73. Light west wind.
Thursday	Sunny and hot, with a high near 104.
Thursday Night	Mostly clear, with a low around 75.
Friday	Sunny and hot, with a high near 104.
Friday Night	A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 73. Chance of precipitation is 20%.
Independence Day	A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 99. Chance of precipitation is 40%.
Saturday Night	A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
Sunday	A chance of showers and thunderstorms. Partly sunny, with a high near 94. Chance of precipitation is 50%.
Sunday Night	A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.
Monday	A chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 50%.

Forecast from NOAA-NWS for Martinsburg WV.