Palmyra, PA Weather

Lebanon County3:43 AM EDT40.31°N, 76.59°WElevation 456 ft
Freeze Watch from 12:00 AM Sat until 9:00 AM Sat

Current conditions

Clear
55°
Clear
Feels like 55°
High 61°·Low 41° tonight
WindNE 5 mph
Humidity68%
Dew point44°
Pressure30.19 inHg
Visibility10.0 mi
Cloud cover9%
Sunrise7:26 AM
Sunset6:16 PM

Observed at Muir Army Air Field / Indiantown · 1 hr ago

Forecast

10-day

  • Thursday Night

    Mostly clear, with a low around 41.

  • Friday

    Sunny, with a high near 61.

  • Friday Night

    Mostly clear, with a low around 36.

National Weather Service forecast updated 2 days ago.

Hourly

Hourly forecast
  1. Now Mostly Clear 46°
  2. 4 AM Mostly Clear 44°
  3. 5 AM Clear 43°
  4. 6 AM Sunny 42°
  5. 7 AM Sunny 41°
  6. 8 AM Sunny 41°
  7. 9 AM Sunny 43°
  8. 10 AM Sunny 47°
  9. 11 AM Sunny 50°
  10. 12 PM Sunny 53°
  11. 1 PM Sunny 55°
  12. 2 PM Sunny 57°
  13. 3 PM Sunny 59°
  14. 4 PM Sunny 61°
  15. 5 PM Sunny 58°
  16. 6 PM Clear 54°
  17. 7 PM Mostly Clear 51°
  18. 8 PM Mostly Clear 46°
  19. 9 PM Mostly Clear 45°
  20. 10 PM Mostly Clear 44°
  21. 11 PM Mostly Clear 43°
  22. Sat12 AM Mostly Clear 42°
  23. 1 AM Mostly Clear 41°
  24. 2 AM Mostly Clear 40°

10-day forecast

Details
  1. TueOct 20 Sunny Sunny41°71°
  2. WedOct 21 Sunny Sunny40°67°
  3. ThuOct 22 Sunny Sunny41°68°
  4. TodayOct 23 Sunny Sunny36°61°
  5. SatOct 24 Patchy Frost then Sunny Patchy Frost then Sunny36°60°
  6. SunOct 25 Sunny Sunny43°66°
  7. MonOct 26 Mostly Sunny Mostly Sunny46°70°
  8. TueOct 27 Sunny Sunny39°60°
  9. WedOct 28 Cloudy Cloudy0.03 in35°51°
  10. ThuOct 29 Partly cloudy Partly cloudy0.10 in45°63°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Weather news in Pennsylvania

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Air quality

66
Moderate
Fine particles (PM2.5)

Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Forecast

  • FriModerate (51)
  • SatModerate (55)
  • SunModerate

Susquehanna Valley, PA reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:26 AM
Sunset 6:16 PM
Daylight 10 h 50 min (−2 min 29 s tomorrow)
Waxing Gibbous · 90% lit
Moonrise 4:43 PM Moonset 4:33 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low63° / 43°
Month to date3.23 in (normal 2.82 in)

Middletown Harrisburg Int'l Ap, records since 1941. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in CTP, issued 4 hrs ago

What Has Changed

* Freeze Watch continues for Friday night for Lancaster and Lebanon Counties. * Adjustments to near-term temperatures due to cloud cover across the northern tier.

Key Messages

1) Dry weather continues into the end of October.

Discussion

KEY MESSAGE 1: Dry weather continues into the end of October.

Overall, forecast remains in fairly good shape outside of the next couple of hours where cloud cover associated with the cold frontal passage has allowed for slightly higher temperatures across the northern tier. This will also lower the fog threat overnight; however, some of the more sheltered valley locations south of I-80 could get some patchy fog closer to daybreak.

Previous Discussion, Issued at 2:14 PM EDT 10/22/2026:

A dry cold frontal passage this evening into tonight will barely be noticeable other than an increase in cloud cover along and behind the front. High pressure builds into the region again behind the front for tomorrow as a pronounced ridge develops over the eastern US. This will keep dry conditions around through at least the beginning of next week with seasonably warm days and chilly nights.

HREF probs of temperatures falling below freezing Friday night are around 50 percent for Lancaster and Lebanon Counties (the only zones where the growing season remains active). This is supported by the NAM MOS guidance which shows temperatures right around 32 in both of those counties. This information, combined with the very favorable set up for efficient radiational cooling, has given us enough confidence to issue a Freeze Watch for Friday night/Saturday morning.

Aviation

Mainly VFR conditions due to high pressure and dry weather will continue for the remainder of this week and into this weekend. Outside of brief periods of valley fog and a thin low stratus deck tonight, there are very low probabilities of reductions to flight categories through Tuesday.

Through the overnight hours, a SCT-BKN thin deck of post- frontal stratus will overspread over the northern half of central Pennsylvania, with few to no clouds expected south of the central Mountains and I-80. The Northern Tier (KBFD) is moderately likely (40-50% chance) to see periods of MVFR ceilings through the night, mainly towards the early hours of Friday morning. Lower chances for MVFR are present (mainly less than 20%) across the central mountains (KUNV/KIPT). These clouds will likely scatter out quickly after sunrise, and VFR will be the dominant flight conditions for Friday.

Sat-Tue...VFR prevailing conditions.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.