Pittsburgh weather

Our guide to the weather in Pittsburgh during May

23

Average high

6

UV Index

159mm

Monthly rainfall

76%

Humidity

We've looked at the most up-to-date weather data for Pittsburgh, covering the last 12 years up to 2026, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Pittsburgh weather in May.

How warm is it in Pittsburgh during May?

The temperature reaches around 23℃ during the daytime in May, falling away to 11℃ at night. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.

Does it rain in Pittsburgh during May?

On average, there will be 9 rainy days during the month, amounting to 158.5mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Pittsburgh during May?

You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in May. With warm air temperatures and high humidity, any breeze will feel warm but refreshing.

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Pittsburgh Blog posts

From the UK's most popular travel bloggers

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11 best things to do in Pittsburgh, Pennsylvania

11th February 2021 by Hand Luggage Only

Around 20-miles east of the border with Ohio, the city of Pittsburgh is an epic place to visit whilst exploring the state on a road trip around Pennsylvania. Great for a few days break, there’s a heap of the best things to do in Pittsburgh dotted all across the city. From vast museums, swanky shopping spots and incredible architecture, it’s one of those fun US cities that totally cool to visit. Plus, you can easily partner this with a much wider trip towards Lake Erie coastline that’s...

Weather in Pittsburgh

Our month-by-month guide to the weather and climate in Pittsburgh

0.6

Pittsburgh weather in

January
2.8

Pittsburgh weather in

February
9.2

Pittsburgh weather in

March
15.7

Pittsburgh weather in

April
22.6

Pittsburgh weather in

May
26.9

Pittsburgh weather in

June
29.4

Pittsburgh weather in

July
28.7

Pittsburgh weather in

August
25.0

Pittsburgh weather in

September
17.5

Pittsburgh weather in

October
10.0

Pittsburgh weather in

November
4.3

Pittsburgh weather in

December