Bryn Mawr, PA Weather

Allegheny County5:29 PM EDT40.30°N, 80.09°WElevation 1,168 ft

Current conditions

Clear
64°
Clear
Feels like 64°
High 66°·Low 38°
WindCalm
Humidity42%
Dew point41°
Pressure30.42 inHg
Visibility10 mi
Cloud cover12%
UV index0 Low
Sunrise7:43 AM
Sunset6:28 PM

Observed at Pittsburgh - Allegheny County Airport · 34 min ago

Forecast

10-day

  • Today

    Sunny, with a high near 66. South wind around 2 mph.

  • Tonight

    Mostly clear, with a low around 38. South wind around 2 mph.

  • Monday

    Sunny, with a high near 68. Southwest wind 2 to 6 mph.

National Weather Service forecast updated 11 hrs ago.

Hourly

Hourly forecast
  1. Now Sunny 64°
  2. 6 PM Mostly Clear 62°
  3. 7 PM Mostly Clear 58°
  4. 8 PM Mostly Clear 51°
  5. 9 PM Partly Cloudy 48°
  6. 10 PM Mostly Clear 46°
  7. 11 PM Mostly Clear 44°
  8. Mon12 AM Mostly Clear 43°
  9. 1 AM Mostly Clear 42°
  10. 2 AM Mostly Clear 41°
  11. 3 AM Mostly Clear 40°
  12. 4 AM Mostly Clear 39°
  13. 5 AM Partly Cloudy 39°
  14. 6 AM Mostly Sunny 38°
  15. 7 AM Mostly Sunny 38°
  16. 8 AM Mostly Sunny 38°
  17. 9 AM Mostly Sunny 42°
  18. 10 AM Sunny 50°
  19. 11 AM Sunny 57°
  20. 12 PM Sunny 61°
  21. 1 PM Mostly Sunny 65°
  22. 2 PM Mostly Sunny 66°
  23. 3 PM Sunny 67°
  24. 4 PM Sunny 68°

10-day forecast

Details
  1. TodayOct 25 Sunny Sunny38°66°
  2. MonOct 26 Sunny Sunny43°68°
  3. TueOct 27 Mostly Sunny Mostly Sunny45°66°
  4. WedOct 28 Mostly Cloudy Mostly Cloudy47°69°
  5. ThuOct 29 Sunny Sunny47°71°
  6. FriOct 30 Mostly Sunny Mostly Sunny47°71°
  7. SatOct 31 Partly Sunny Partly Sunny18%52°71°
  8. SunNov 1 Heavy rain Heavy rain1.26 in54°57°
  9. MonNov 2 Light rain Light rain0.20 in43°62°
  10. TueNov 3 Partly cloudy Partly cloudy37°52°

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

Radar

Full map
Open the National Weather Service radar (the map here needs JavaScript).

Weather news near Bryn Mawr

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Air quality

49
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 7:43 AM
Sunset 6:28 PM
Daylight 10 h 45 min (−2 min 28 s tomorrow)
Full Moon · 100% lit
Moonrise 5:47 PM Moonset 7:05 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low60° / 41°
Record high82° (2012)
Record low26° (1965)
Wettest1.90 in (1872)
Yesterday63° / 39°
Month to date3.36 in (normal 2.18 in)

Pittsburgh Area, records since 1875. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in PBZ, issued 4 hrs 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.

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