Pittsburgh, United States skyline

Pittsburgh Weather in August

What August is usually like in Pittsburgh, United States — from 2006–2025 averages.

Expect Pittsburgh to reach about 27.7°C (81.9°F) by day and 18°C (64.4°F) at night in August, with 12 rainy days bringing 95 mm and around 10.9 hours of sunshine each day.

Avg high

27.7°C (81.9°F)

Avg low

18°C (64.4°F)

Rainfall

95 mm (3.7 in)

Rainy days

12 days

Sunshine

10.9 h / day

Humidity

74%

August vs the rest of the year

August is warmer than 10 of the other 11 months, and the 4th driest month in Pittsburgh.

MonthAvg highvs AugustRainRainy days
January2.9°C (37.2°F)−24.8°C (−44.6°F)88 mm12
February4.8°C (40.6°F)−22.9°C (−41.2°F)93 mm12
March10.8°C (51.4°F)−16.9°C (−30.4°F)103 mm13
April16.7°C (62.1°F)−11°C (−19.8°F)119 mm14
May22°C (71.6°F)−5.7°C (−10.3°F)126 mm15
June26.3°C (79.3°F)−1.4°C (−2.5°F)145 mm15
July28.6°C (83.5°F)+0.9°C (+1.6°F)115 mm15
August27.7°C (81.9°F)—95 mm12
September24.5°C (76.1°F)−3.2°C (−5.8°F)96 mm10
October17.7°C (63.9°F)−10°C (−18°F)104 mm12
November10.8°C (51.4°F)−16.9°C (−30.4°F)75 mm9
December5.8°C (42.4°F)−21.9°C (−39.4°F)100 mm12

What August feels like in Pittsburgh

In Pittsburgh, August brings late summer. Days are warm enough for short sleeves, and time outdoors is easy. Once the sun goes down the air changes: nights stay mild. Some humidity hangs in the air, noticeable when the sun is strong.

Rain in Pittsburgh in August

Showers are a regular feature, arriving about one day in 3. Wet days average about 7.9 mm (0.3 in), enough to soak you without an umbrella. That is close to Pittsburgh's typical rain per wet day for the whole year (about 8.3 mm).

Daylight and sunshine in August

On 15 August the sun rises at about 6:30 am and sets around 8:20 pm local time, giving 13 h 50 min of daylight. Days are getting shorter: 59 min less daylight than in mid-July. The sun is out for roughly 79% of those daylight hours, so there are plenty of bright spells.

How August compares to the rest of the year

In Pittsburgh's temperature order, August sits as the 2nd warmest month. Afternoons run 0.9°C (1.6°F) cooler than in July, with 20 mm less rain. September is cooler again. September averages a high of 24.5°C (76.1°F).

Who August suits

  • Sightseeing: a good fit — daytime temperatures are fine for walking around.
  • Parks & outdoor: less ideal — afternoons are too warm to linger outside.

Tips for visiting Pittsburgh in August

Versatile Layers

Mornings and evenings are cooler than midday, so dress in layers.

Rain Protection

A packable rain jacket saves the day on showery afternoons.

Sunglasses

Frequent sunshine — sunglasses and a light hat.

Quick questions

How warm is Pittsburgh in August?

It feels warm: typical highs are 27.7°C (81.9°F), with lows near 18°C (64.4°F).

Does it rain a lot in Pittsburgh in August?

Yes, fairly — rain falls about one day in 3 and totals about 95 mm, so an umbrella is worth carrying.

What should I wear in Pittsburgh in August?

Pack versatile layers, rain protection and sunglasses. Evenings feel similar to the day, so the same clothes work from morning to night.

Is August or September better for visiting Pittsburgh?

September, clearly: it ranks #1 of 12 among Pittsburgh's months, against #4 for the other. September is cooler and has fewer rainy days.

Is August a good time to visit Pittsburgh?

Good

Good — warm to hot days, frequent rain (about 12 rainy days), plenty of sunshine (10.9 h a day). Within Pittsburgh's own year, August ranks #4 of 12.

August in other United States cities

Drier places in August

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Monthly averages from 20 years of Open-Meteo history (2006–2025), not a forecast — see all 12 months in Pittsburgh weather by month.