MECHANICSBURG, PA 17055 Weather Forecast & Current Conditions

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HARRISBURG, PA
Current Weather

7:56 AM EDT MAY 18, 2026
Clear
70°F
Feels Like: 70°F
Dewpoint: 63°F
Rel. Hum.: 78%
Visibility: 10 miles
Wind: Calm
Pressure: 30.17 inches
Last 72 hours

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MECHANICSBURG, PA 17055
Weather Forecast

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Snow Depth pages
TODAY
Sunny, hot with highs in the lower 90s. Southwest winds 5 to 10 mph.
TONIGHT
Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Some thunderstorms may produce gusty winds in the evening. Lows in the upper 60s. Southwest winds 5 to 10 mph. Chance of rain 30 percent.
TUESDAY
Mostly sunny. Hot with highs in the lower 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph.
TUESDAY NIGHT
Partly cloudy in the evening, then clearing. Lows in the upper 60s. Southwest winds 5 to 10 mph.
WEDNESDAY
Mostly sunny in the morning, then mostly cloudy with showers with a chance of thunderstorms in the afternoon. Hot with highs in the upper 80s. Temperature falling into the lower 80s in the afternoon. West winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 90 percent.
WEDNESDAY NIGHT
Mostly cloudy. Showers in the evening. Less humid. Much cooler with lows in the lower 50s. Chance of rain 90 percent.
THURSDAY
Mostly cloudy in the morning, then becoming partly sunny. Much cooler with highs in the upper 60s.
THURSDAY NIGHT
Mostly cloudy. A chance of showers in the evening. Lows in the upper 40s. Chance of rain 30 percent.
FRIDAY
Mostly cloudy. A chance of showers in the morning, then showers likely in the afternoon. Highs in the mid 60s. Chance of rain 70 percent.
FRIDAY NIGHT
Showers. Lows in the lower 50s. Chance of rain 80 percent.
SATURDAY
Showers likely. A chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 70 percent.
SATURDAY NIGHT
A chance of thunderstorms in the evening. Showers likely. Lows in the mid 50s. Chance of rain 70 percent.
SUNDAY
Mostly cloudy with a chance of showers. Highs in the mid 70s. Chance of rain 50 percent.

Visible Weather Satellite
MECHANICSBURG, PA 17055
Infrared Weather Satellite
MECHANICSBURG, PA 17055
NEXRAD Weather Radar
MECHANICSBURG, PA 17055

HARRISBURG, PA 3 hourly weather forecast

weather forecast created  7:00 PM CDT  5/17/2026
Monday
18 MAY 2026
MECHANICSBURG, PA 17055 weather forecast Day 1, 0 hours 2 AM 68° 68° Partly Cloudy 1%

0% Thunder
( 3% severe)
  CALM 78% 61°
Low 63° MECHANICSBURG, PA 17055 weather forecast Day 1, 3 hours 5 AM 64° 66° Partly Cloudy   CALM 87% 60°
High 96° MECHANICSBURG, PA 17055 weather forecast Day 1, 6 hours 8 AM 69° 69° Clear 2%

0% Thunder
( 3% severe)
  CALM 78% 62°

Clear



MECHANICSBURG, PA 17055 weather forecast Day 1, 9 hours 11 AM 84° 85° Clear WSW   2 49% 63°
MECHANICSBURG, PA 17055 weather forecast Day 1, 12 hours 2 PM 93° 94° Clear 6%

0% Thunder
( 28% severe)
SSW   7 36% 62°
MECHANICSBURG, PA 17055 weather forecast Day 1, 15 hours 5 PM 96° 97° Clear SSW   10 32% 61°
MECHANICSBURG, PA 17055 weather forecast Day 1, 18 hours 8 PM 88° 89° Partly Cloudy 18%
RAIN
<.01 in
0% Thunder
( 15% severe)
SW   7 45% 64°
MECHANICSBURG, PA 17055 weather forecast Day 1, 21 hours 11 PM 80° 81° Partly Cloudy SSW   7 54% 62°
Tuesday
19 MAY 2026
MECHANICSBURG, PA 17055 weather forecast Day 2, 0 hours 2 AM 73° 73° Partly Cloudy 3%

0% Thunder
( 3% severe)
S   6 66% 61°
Low 68° MECHANICSBURG, PA 17055 weather forecast Day 2, 3 hours 5 AM 70° 70° Partly Cloudy W   2 73% 61°
High 97° MECHANICSBURG, PA 17055 weather forecast Day 2, 6 hours 8 AM 74° 74° Partly Cloudy 1%

0% Thunder
( 3% severe)
  CALM 66% 62°

Partly Cloudy



MECHANICSBURG, PA 17055 weather forecast Day 2, 9 hours 11 AM 87° 87° Partly Cloudy WSW   7 43% 62°
MECHANICSBURG, PA 17055 weather forecast Day 2, 12 hours 2 PM 94° 94° Partly Cloudy 2%

0% Thunder
( 20% severe)
WSW   10 32% 60°
MECHANICSBURG, PA 17055 weather forecast Day 2, 15 hours 5 PM 97° 97° Mostly Cloudy SW   12 29% 59°
MECHANICSBURG, PA 17055 weather forecast Day 2, 18 hours 8 PM 90° 90° Partly Cloudy 2%

0% Thunder
( 11% severe)
SW   7 38% 61°
MECHANICSBURG, PA 17055 weather forecast Day 2, 21 hours 11 PM 82° 82° Partly Cloudy SW   6 46% 59°

HARRISBURG, PA extended weather forecast

Wednesday
20 MAY 2026
Thursday
21 MAY 2026
Friday
22 MAY 2026
Saturday
23 MAY 2026
Sunday
24 MAY 2026
Low 70° Low 57° Low 51° Low 52° Low 53°
High 85° High 69° High 65° High 63° High 71°
MECHANICSBURG, PA 17055 weather forecast Day 3 MECHANICSBURG, PA 17055 weather forecast Day 4 MECHANICSBURG, PA 17055 weather forecast Day 5 MECHANICSBURG, PA 17055 weather forecast Day 6 MECHANICSBURG, PA 17055 weather forecast Day 7
Mostly Cloudy
56% Rain
Overcast
48% Rain
Overcast
60% Rain
Overcast
73% Rain
Overcast
70% Rain
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