National Weather Service Forecast for: Mount Lebanon PA
Issued by: National Weather Service Pittsburgh, PA
Updated: 10:02 pm EDT Apr 16, 2025
 
Overnight

Overnight: Widespread frost, mainly after 3am. Otherwise, clear, with a low around 31. Northwest wind around 5 mph becoming calm.
Frost

 Thursday

Thursday: Widespread frost before 9am. Otherwise, sunny, with a high near 61. Light south wind.
Frost then
Sunny
 Thursday
Night
Thursday Night: Increasing clouds, with a low around 45. Southeast wind 3 to 6 mph.
Increasing
Clouds
 Friday

Friday: Partly sunny, with a high near 78. Southwest wind 9 to 17 mph, with gusts as high as 29 mph.
Partly Sunny

 Friday
Night
Friday Night: A chance of showers after 2am. Mostly cloudy, with a low around 63. Southwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Partly Cloudy
then Chance
Showers
 Saturday

Saturday: Showers, with thunderstorms also possible after 2pm. High near 74. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers

 Saturday
Night
Saturday Night: A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.
Chance
T-storms
 Sunday

Sunday: A chance of showers after 8am. Mostly cloudy, with a high near 66. Chance of precipitation is 30%.
Chance
Showers
 Sunday
Night
Sunday Night: A chance of showers after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Mostly Cloudy
then Chance
Showers
Lo 31 °F Hi 61 °F Lo 45 °F Hi 78 °F Lo 63 °F Hi 74 °F Lo 52 °F Hi 66 °F Lo 53 °F

Hazardous Weather Outlook
 

Overnight
 
 Widespread frost, mainly after 3am. Otherwise, clear, with a low around 31. Northwest wind around 5 mph becoming calm.
Thursday
 
 Widespread frost before 9am. Otherwise, sunny, with a high near 61. Light south wind.
Thursday Night
 
 Increasing clouds, with a low around 45. Southeast wind 3 to 6 mph.
Friday
 
 Partly sunny, with a high near 78. Southwest wind 9 to 17 mph, with gusts as high as 29 mph.
Friday Night
 
 A chance of showers after 2am. Mostly cloudy, with a low around 63. Southwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
 
 Showers, with thunderstorms also possible after 2pm. High near 74. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
 
 A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.
Sunday
 
 A chance of showers after 8am. Mostly cloudy, with a high near 66. Chance of precipitation is 30%.
Sunday Night
 
 A chance of showers after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Monday
 
 Showers likely, mainly after 2pm. Partly sunny, with a high near 70. Chance of precipitation is 60%.
Monday Night
 
 Showers likely. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Tuesday
 
 Mostly sunny, with a high near 64.
Tuesday Night
 
 Partly cloudy, with a low around 46.
Wednesday
 
 A chance of showers. Mostly sunny, with a high near 71. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Mount Lebanon PA.