Chambersburg, PA Weather

Franklin County12:59 PM EDT39.94°N, 77.66°WElevation 617 ft

Current conditions

Clear
66°
Clear
Feels like 66°
High 71°·Low 42°
WindN 7 mph
Humidity37%
Dew point39°
Pressure30.30 inHg
Visibility10 mi
Cloud cover0%
UV index4 Moderate
Sunrise7:27 AM
Sunset6:25 PM

Observed at Hagerstown, Washington County Regional Airport · 29 min ago

Forecast

10-day

  • This Afternoon

    Sunny, with a high near 71. North wind around 8 mph.

  • Tonight

    Clear, with a low around 42. Northeast wind around 5 mph.

  • Wednesday

    Sunny, with a high near 67. North wind around 5 mph.

National Weather Service forecast updated 23 min ago.

Hourly

Hourly forecast
  1. Now Sunny 63°
  2. 1 PM Sunny 65°
  3. 2 PM Sunny 67°
  4. 3 PM Sunny 69°
  5. 4 PM Sunny 71°
  6. 5 PM Sunny 67°
  7. 6 PM Clear 63°
  8. 7 PM Clear 59°
  9. 8 PM Clear 54°
  10. 9 PM Clear 53°
  11. 10 PM Clear 51°
  12. 11 PM Clear 49°
  13. Wed12 AM Clear 48°
  14. 1 AM Clear 48°
  15. 2 AM Clear 46°
  16. 3 AM Clear 46°
  17. 4 AM Clear 45°
  18. 5 AM Clear 43°
  19. 6 AM Sunny 43°
  20. 7 AM Sunny 42°
  21. 8 AM Sunny 42°
  22. 9 AM Sunny 46°
  23. 10 AM Sunny 52°
  24. 11 AM Sunny 56°

10-day forecast

Details
  1. TodayOct 20 Sunny Sunny42°71°
  2. WedOct 21 Sunny Sunny38°67°
  3. ThuOct 22 Sunny Sunny40°68°
  4. FriOct 23 Sunny Sunny36°61°
  5. SatOct 24 Sunny Sunny37°62°
  6. SunOct 25 Sunny Sunny44°66°
  7. MonOct 26 Mostly Sunny Mostly Sunny47°70°
  8. TueOct 27 Cloudy Cloudy41°62°
  9. WedOct 28 Cloudy Cloudy37°54°
  10. ThuOct 29 Partly cloudy Partly cloudy45°66°

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

Radar

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Weather news near Chambersburg

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Air quality

30
Good
Ozone

Air quality is satisfactory, and air pollution poses little or no risk.

Forecast

  • TueGood (33)
  • WedGood (33)
  • ThuGood (44)

Hagerstown Region, MD reporting area · 59 min ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:27 AM
Sunset 6:25 PM
Daylight 10 h 58 min (−2 min 29 s tomorrow)
Waxing Gibbous · 70% lit
Moonrise 3:39 PM Moonset 1:25 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low64° / 43°
Record high83° (2016)
Record low19° (1972)
Wettest1.59 in (1905)
Month to date3.56 in (normal 1.83 in)

Hagerstown 1e, records since 1899. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in CTP, issued 6 hrs ago

What Has Changed

* No changes

Key Messages

1) An extended stretch of dry and seasonable weather continues through the rest of this week

Discussion

KEY MESSAGE 1: An extended stretch of dry and seasonable weather continues through the rest of this week

330 AM Update... Surface Temp/Dewpoint spreads of a few to several degrees were helping to greatly minimize the development of valley fog so far early today.

Aside from an ill-defined, weak cold front moving SE from the Lower Glakes region with nothing more than some shallow sct-bkn strato cu (topped by some areas of thin cirrus) across the NW Mtns during the second half of this morning, skies will stay clear under persistent high pressure over the Northeast U.S.

This dominant weather feature will continue our stretch of dry weather with seasonable temperatures for the rest of this week.

Temperatures to start the day today will range from near 30 degrees throughout the perennial cold spots in Central and Northern PA to the mid 30s and lower 40s in the south.

Patchy frost will be possible in the coldest spots across the Lower Susquehanna Valley where Lancaster and Lebanon Counties are still hanging onto the growing season based on the absence of widespread sub-freezing temps so far.

Aviation

High pressure and very dry air are allowing for continued dry conditions and clear skies across the majority of the forecast area this morning. VFR conditions are virtually certain through 06Z Wednesday at all of central Pennsylvania's airfields. Winds are beginning to pick up in response to the coastal storm off the Atlantic Coast as it slowly slides northward. The general trend will be increasing northerly wind gusts throughout the day, with maximum winds/gusts peaking across western terminals in the 5-10KT range, while some of the eastern terminals (highest confidence at MDT/LNS) will top out closer to 15KT this afternoon/evening. HREF ensemble guidance (which has shown fair skill in honing in *where* fog will form the past couple of days) has started to outline the northern tier for some chances of fog formation between 06-12Z Wednesday, which will bring some chances for lower flight categories (IFR and below) to the northern airfields (BFD/IPT/UNV) in that timeframe. Confidence remains too low (~20-30%) for inclusion in the 12Z TAF package, but something to keep an eye on in future TAF sets given it appears that conditions will be fairly drastic with respect to prevailing VFR OR IFR/VLIFR.

Wed-Sat...Patchy AM fog and frost possible in the north and west; otherwise, VFR conditions will prevail.

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.