Tomorrow's Weather Forecast - Pittsburgh

Tomorrow’s Outlook

Tomorrow will be 2°C warmer than today. Expect heavy rain in the evening, with rain chances climbing as high as 78%. That risk lines up with humidity averaging 84% through the day the more moisture in the air, the more readily clouds build into showers. Humidity stays high near 84%, so it will feel muggier and stickier than the temperature alone suggests. Winds will turn gusty at times, reaching up to 53 km/h. Sunrise is at 6:57 AM and sunset at 7:33 PM, for about 12h 36m of daylight.

Tomorrow: 29°/ 19°; Today27° / 19°

Tomorrow’s Hourly Weather Outlook

Morning6 AM – Noon22°

Rain probability: 17%
Wind speed: 10 km/h

AfternoonNoon – 6 PM25°

Rain probability: 36%
Wind speed: 24 km/h

Evening6 PM – Midn22°

Rain probability: 78%
Wind speed: 8 km/h

NightMidn – 6 AM19°

Rain probability: 1%
Wind speed: 7 km/h

24-Hour Rain & Temperature Forecast

Tomorrow12 Sep

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Temperature · peaks at +29°C

+20

+19

+20

+23

+25

+27

+29

+27

+23

+22

Wind & gusts · m/s

Rain probability · peaks at 78% at 23:00

10%

17%

14%

11%

15%

22%

29%

33%

36%

37%

43%

34%

50%

45%

78%

Expected rainfall · 2.6mm total · peak at 21:00

0.4

1.8

Planning Advice for Tomorrow

Clothing: Waterproof jacket and umbrella strongly recommended.

Outdoor: Not ideal for outdoor plans or car washes — heavy rain expected.

Travel: Expect traffic slowdowns from wet roads. Allow extra time.

Sunrise & Sunset

Sunrise

6:57 AMDawn 6:27 AM

Total Daylight

12h 36m

Full day forecastSolar noon 1:15 PM

Sunset

7:33 PMDusk 8:03 PM

vs today-2 min daylight

Sunrise shiftSame time

Sunset shift2 min earlier

5-Day Weather Forecast

Weather Insight

Pittsburgh is forecast to reach a high of 29°C tomorrow, with an overnight low around 19°C. That's 3° above the long-term average high of 26°C for this time of year. Expect a high chance of rain (78% probability) and moderate breezes averaging 24 km/h. Air quality is currently good (AQI 48), with no notable outdoor health concerns.

Today vs Normal

27°C+1° above normal

The long-term average high for today is 26°C.

6 of the last 28 days with published data ran above normal.

That's a break from the pattern - today's forecast runs above normal even though the recent stretch mostly ran below.

Red = above normal, blue = at or below · last 12 days

Air Quality

Good

Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.

Weather Insight

Today vs Normal

27°C+1° above normal

The long-term average high for today is 26°C.

6 of the last 28 days with published data ran above normal.

That's a break from the pattern - today's forecast runs above normal even though the recent stretch mostly ran below.

Red = above normal, blue = at or below · last 12 days

Air Quality

Good

Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.