Mount Pleasant, PA 15666 Weather

Westmoreland County8:12 PM EDT40.17°N, 79.51°W

Current conditions

Clear
57°
Clear
Feels like 57°
High 67° Monday·Low 41° tonight
WindCalm
Humidity59%
Dew point43°
Pressure30.44 inHg
Visibility10.0 mi
Cloud cover10%
UV index0 Low
Sunrise7:40 AM
Sunset6:26 PM

Observed at Arnold Palmer Regional Airport · 1 hr ago

Forecast

10-day

  • Tonight

    Mostly clear, with a low around 41. Southeast wind around 2 mph.

  • Monday

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

  • Monday Night

    Partly cloudy, with a low around 45. Southwest wind around 2 mph.

National Weather Service forecast updated 2 hrs ago.

Hourly

Hourly forecast
  1. Now Mostly Clear 51°
  2. 9 PM Clear 48°
  3. 10 PM Mostly Clear 48°
  4. 11 PM Mostly Clear 46°
  5. Mon12 AM Mostly Clear 45°
  6. 1 AM Mostly Clear 44°
  7. 2 AM Mostly Clear 44°
  8. 3 AM Mostly Clear 44°
  9. 4 AM Mostly Clear 42°
  10. 5 AM Mostly Clear 42°
  11. 6 AM Sunny 41°
  12. 7 AM Sunny 41°
  13. 8 AM Sunny 41°
  14. 9 AM Sunny 44°
  15. 10 AM Sunny 51°
  16. 11 AM Sunny 56°
  17. 12 PM Sunny 62°
  18. 1 PM Sunny 64°
  19. 2 PM Sunny 66°
  20. 3 PM Sunny 67°
  21. 4 PM Sunny 67°
  22. 5 PM Sunny 67°
  23. 6 PM Mostly Clear 64°
  24. 7 PM Mostly Clear 58°

10-day forecast

Details
  1. TonightOct 25 Mostly Clear Mostly Clear41°
  2. MonOct 26 Sunny Sunny45°67°
  3. TueOct 27 Mostly Sunny Mostly Sunny47°67°
  4. WedOct 28 Partly Sunny Partly Sunny48°70°
  5. ThuOct 29 Sunny Sunny51°72°
  6. FriOct 30 Mostly Sunny Mostly Sunny50°72°
  7. SatOct 31 Partly Sunny Partly Sunny55°72°
  8. SunNov 1 Chance Rain Showers Chance Rain Showers43%69°
  9. MonNov 2 Rain Rain0.33 in41°62°
  10. TueNov 3 Partly cloudy Partly cloudy36°53°

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

43
Good
Fine particles (PM2.5)

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

Forecast

  • SunModerate (75)
  • MonModerate (70)
  • TueModerate

Mon Valley Area, 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 7:40 AM
Sunset 6:26 PM
Daylight 10 h 45 min (−2 min 26 s tomorrow)
Full Moon · 100% lit
Moonrise 5:45 PM Moonset 7:03 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low59° / 38°
Record high76° (1991)
Record low22° (1981)
Wettest1.06 in (1946)
Month to date2.03 in (normal 2.51 in)

Donegal 2 Nw, records since 1943. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in PBZ, issued 1 hr ago

What Has Changed

No changes to the forecast package or messaging.

Key Messages

1) High confidence in continued dry weather and above-noraml temperatures through the work week. Rain chances may finally return next weekend.

Discussion

KEY MESSAGE 1... New day, same message. High pressure remains in control, with dry weather highly likely through Saturday. The passage of a 500mb ridge axis will provide a small boost to already above- normal temperatures on Monday.

A dry frontal passage Monday night will provide some clouds and a minor temperature bump downward, but not enough moisture for precipitation chances. That boundary then returns north as a warm front through midweek, which will eventually push temperatures some 10 to 15 degrees above normal by Thursday. A shortwave crossing the Great Lakes Thursday night/Friday appears to still remain too far north for precipitation chances; a cloud increase is expected north of Pittsburgh.

There is still a decent model signal for an Ohio Valley shortwave next weekend that may finally break the dry spell on Sunday. The various ensemble members still show strength and timing differences, so rainfall could get pushed later once again, but a wetter post-Halloween pattern is certainly possible.

Aviation

VFR through the TAF period save for low probability river valley fog resulting in MVFR to LIFR visibility Monday morning (11z-13z). Wind remains light (with some speed increase Monday afternoon out of the W/SW) with passing cirrus later this evening into tomorrow. These conditions will continue into tomorrow evening.

Outlook... High pressure ensures VFR and dry weather through at least Thursday with rising temperature and increasing cirrus reducing morning river valley fog risk.

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. How to use Weather