Weather in Pittsburgh in December 2024
Average weather
Average temperature in Pittsburgh in December
Going from a maximum of +61°F during the day to a minimum of +21°F during the night, the temperature in December averages around +48°F.
The average maximum temperature goes down 23% by the end of the month, compared with the beginning of the month, from +48°F to +39°F.
Is Pittsburgh warm or cold in December?
Pittsburgh is typically chill in December.
Maximum temperatures go down compared to the previous month from +54°F to +43°F. The minimum temperature also goes down from +37°F to +30°F.
Pack a jumper and a jacket as there will be cooler temperatures.
December is one of the coolest months in Pittsburgh, here is the comparison with other months:
Climate in Pittsburgh in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +54°F | +43°F | +37°F | ||||
| Min. temperature | ||||||
| +12°F | -11°F | -18°F | ||||
| Max. temperature | ||||||
| +81°F | +75°F | +72°F | ||||
| Rainfall | ||||||
| 89 mm | 73 mm | 58 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 72% | 74% | 73% | ||||
| Air pressure | ||||||
| 1018 HPa | 1019 HPa | 1018 HPa | ||||
| Sunny days | ||||||
| 5 | 3 | 2 | ||||
| Cloudy days | ||||||
| 10 | 11 | 12 | ||||
| Rainy days | ||||||
| 12 | 10 | 7 | ||||
| Snowy days | ||||||
| 2 | 7 | 10 | ||||
December weather is still as ok as in November. It’s getting colder in December. From +54°F in the day, the average maximum temperature lowers to +43°F. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 89 mm to 73 mm. Humidity rises from 72% to 74%. The average wind speed doesn’t change much during December, staying around 3 m/s. The days becoming less sunny, going from 5 sunny days in November to 3 in December.
January brings much the same weather, it remains ok.
Wind
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Pittsburgh is gradually increasing during December, going from 2 m/s to 3 m/s over the course of the month.
Rain
Snow
December is one of the snowiest months in Pittsburgh.
Here’s how December is compared with other months in the amount of snow, total mm:
How was the weather last December in Pittsburgh?
Climate Change Over the Years
The climate in Pittsburgh in December has not changed that much over the last 43 years.
The average temperature was the lowest in 1979 (+59°F) and the highest in 2012 (+66°F). The driest year was 1988 with only 782 mm of rainfall, and the wettest year was 2019 with 2006 mm.
FAQ
Is December a good time to visit Pittsburgh?
Can you sunbathe in Pittsburgh in December?
Is Pittsburgh rainy in December?
Is it sunny in Pittsburgh in December?
Other cities in USA
Monthly weather in Pittsburgh
Source of the data
For this page, we’ve looked at the typical weather in Pittsburgh, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.