Harrisburg, PA 17121 Weather

Dauphin County1:50 PM EDT40.29°N, 76.89°W

Current conditions

Mostly Clear
61°
Mostly Clear
Feels like 61°
High 63°·Low 35°
WindN 5 mph
Humidity45%
Dew point39°
Pressure30.36 inHg
Visibility10 mi
Cloud cover5%
UV index4 Moderate
Sunrise7:28 AM
Sunset6:18 PM

Observed at Harrisburg, Capital City Airport · 35 min ago

Forecast

10-day

  • Today

    Sunny, with a high near 63. Northeast wind around 6 mph.

  • Tonight

    Areas of frost after 3am. Mostly clear, with a low around 35. Northeast wind around 2 mph.

  • Saturday

    Areas of frost before 9am. Sunny, with a high near 62. Southeast wind around 1 mph.

National Weather Service forecast updated 4 hrs ago.

Hourly

Hourly forecast
  1. Now Sunny 60°
  2. 2 PM Sunny 62°
  3. 3 PM Sunny 62°
  4. 4 PM Sunny 61°
  5. 5 PM Sunny 61°
  6. 6 PM Mostly Clear 57°
  7. 7 PM Mostly Clear 53°
  8. 8 PM Mostly Clear 50°
  9. 9 PM Mostly Clear 47°
  10. 10 PM Mostly Clear 45°
  11. 11 PM Mostly Clear 43°
  12. Sat12 AM Mostly Clear 41°
  13. 1 AM Mostly Clear 39°
  14. 2 AM Mostly Clear 38°
  15. 3 AM Areas Of Frost 38°
  16. 4 AM Areas Of Frost 38°
  17. 5 AM Areas Of Frost 37°
  18. 6 AM Areas Of Frost 37°
  19. 7 AM Areas Of Frost 37°
  20. 8 AM Patchy Frost 36°
  21. 9 AM Sunny 41°
  22. 10 AM Sunny 48°
  23. 11 AM Sunny 53°
  24. 12 PM Sunny 56°

10-day forecast

Details
  1. TodayOct 23 Sunny Sunny35°63°
  2. SatOct 24 Areas Of Frost then Sunny Areas Of Frost then Sunny33°62°
  3. SunOct 25 Patchy Frost then Sunny Patchy Frost then Sunny36°65°
  4. MonOct 26 Sunny Sunny45°70°
  5. TueOct 27 Sunny Sunny41°64°
  6. WedOct 28 Partly Sunny Partly Sunny43°61°
  7. ThuOct 29 Partly Sunny Partly Sunny45°66°
  8. FriOct 30 Partly cloudy Partly cloudy46°62°
  9. SatOct 31 Sunny Sunny39°54°
  10. SunNov 1 Mostly sunny Mostly sunny36°58°

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 Harrisburg

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Air quality

37
Good
Fine particles (PM2.5)

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

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 7:28 AM
Sunset 6:18 PM
Daylight 10 h 50 min (−2 min 29 s tomorrow)
Waxing Gibbous · 93% lit
Moonrise 4:44 PM Moonset 4:35 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low63° / 43°
Record high86° (1947)
Record low29° (1982)
Wettest1.86 in (1990)
Yesterday67° / 43°
Month to date3.23 in (normal 2.82 in)

Middletown-Harrisburg Area, records since 1888. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in CTP, issued 9 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 last week of October.

Discussion

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

A dry cold front will push south of the Mason-Dixon Line early today. In the wake of the cfront, a brief, several-hour uptick in north to northeasterly wind will occur across the Susq Valley and points east during the mid to late morning hours today.

PWAT values will once again decrease to 0.25 of an inch or less for the midday and afternoon hours today as sfc high pressure builds into the region with a pronounced upper level ridge developing 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 late tonight and early Sat are 50 percent or less for Lancaster and Lebanon Counties (the only zones where the growing season remains active).

NAM and GFS MOS guidance have shown a slight increase to 33-36F in both of those counties. This trend (albeit with still very favorable set up for efficient radiational cooling), has led us to hold onto (for another model cycle) the Freeze Watch for tonight/Saturday morning.

Widespread frost appears likely acrs much of these 2 counties (and elsewhere across the rest of the CWA), but there is still some question if we'll see many sub-freezing min temps in the current Watch area.

Aviation

Mainly VFR conditions due to high pressure and dry weather will continue into this weekend. Outside of patchy valley fog in the north and brief MVFR cigs possible early this morning (mainly BFD), there are very low probabilities of reductions to flight categories. Wind gusts of 15-20 kts will remain possible across the southeast today in N to NE flow, with lighter winds towards the northwest, closer to the center of the high.

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 4Search index and reflects what the press published. Terms of use.