Pittsburgh weather 10 day conditions are setting up a stretch of classic December variability, with residents facing a sharp cold start, brief warm-ups, and several shifts between dry and wet weather. As of today, December 15, the forecast reflects confirmed, current conditions that will influence commuting, outdoor plans, and holiday travel across western Pennsylvania.
This forecast period highlights how quickly winter patterns can change in Pittsburgh, with temperatures swinging from well below freezing to unseasonably mild in just a few days.
Current Conditions and Short-Term Setup
Pittsburgh enters the forecast period under cold and mostly cloudy skies. Arctic air has settled over the region, keeping daytime temperatures low and overnight readings firmly in the teens. Light flurries remain possible, especially during the early part of the forecast, though significant accumulation is not expected at this time.
Wind chill values make conditions feel colder than the actual air temperature, particularly during morning and nighttime hours. Sidewalks, bridges, and untreated roads may develop slick spots, especially where moisture lingers.
Day-By-Day Pittsburgh Weather 10 Day Breakdown
The following outlook provides a detailed look at how conditions are expected to evolve over the next ten days.
Monday, December 15
Cold air dominates throughout the day. Skies remain mostly cloudy, and occasional flurries may drift through the region.
- High near 21°F
- Low around 13°F
Tuesday, December 16
Temperatures slowly recover as the cold air begins to retreat. Skies turn partly cloudy with calmer conditions.
- High near 34°F
- Low around 28°F
Wednesday, December 17
Cloud cover increases as a milder air mass approaches. Despite the clouds, conditions stay dry.
- High around 42°F
- Low near 28°F
Thursday, December 18
A noticeable shift arrives as warmer air moves in. Rain becomes likely during the afternoon and evening.
- High near 52°F
- Low around 24°F
Friday, December 19
Behind the rain system, colder air returns. Temperatures fall back closer to seasonal norms.
- High near 32°F
- Low around 21°F
Saturday, December 20
Conditions turn milder again. Clouds remain, and a slight chance of rain develops later in the day.
- High around 46°F
- Low near 35°F
Sunday, December 21
Cloudy skies persist. Spotty showers may appear at times, though long periods of dry weather are also possible.
- High near 44°F
- Low in the lower 30s
Monday, December 22
Another unsettled day with clouds and intermittent rain chances.
- High around 40°F
- Low near freezing
Tuesday, December 23
Temperatures rise ahead of the holiday. Rain is possible as milder air pushes into the region.
- High near 53°F
- Low around 36°F
Wednesday, December 24
Cloud cover continues with temperatures hovering close to average for late December.
- High around 46°F
- Low near 31°F
Temperature Trends Across the Forecast Period
One of the most notable features of this forecast is the wide temperature range. Pittsburgh will see lows in the teens early in the period, followed by highs climbing into the 50s before dipping back toward freezing.
These swings are driven by alternating air masses moving through the Ohio Valley. Cold Canadian air settles in early, while milder systems briefly push north before retreating again. This pattern is common in December but can feel dramatic when changes happen quickly.
Precipitation Outlook and What to Expect
While snow is often top of mind during winter, rain plays a larger role in this forecast window. Early-week flurries are light and limited, while mid-to-late week precipitation falls mainly as rain.
The most likely windows for wet weather include:
- Thursday, December 18
- Saturday, December 20
- Tuesday, December 23
Overnight temperatures near freezing could still create slick conditions where rainwater refreezes, especially on bridges and elevated roadways.
How the Forecast Affects Daily Life
Commuting Conditions
Morning commutes early in the week may feel harsh due to cold air and wind chill. Later in the forecast, rain could slow traffic and reduce visibility during peak hours.
Outdoor Activities
Those planning outdoor work or recreation should dress in layers during the colder days. Midweek warmth offers a short break from the cold but comes with rain chances.
Holiday Travel Considerations
As travel increases closer to Christmas, weather conditions remain variable. Rain appears more likely than snow, but overnight cold could still affect early-morning departures.
Pittsburgh Weather 10 Day Overview Table
| Date | General Conditions | High | Low |
|---|---|---|---|
| Dec 15 | Cloudy, flurries | 21°F | 13°F |
| Dec 16 | Partly cloudy | 34°F | 28°F |
| Dec 17 | Mostly cloudy | 42°F | 28°F |
| Dec 18 | Rain likely | 52°F | 24°F |
| Dec 19 | Mostly cloudy | 32°F | 21°F |
| Dec 20 | Chance of rain | 46°F | 35°F |
| Dec 21 | Cloudy | 44°F | Low 30s |
| Dec 22 | Clouds, showers | 40°F | Near 32°F |
| Dec 23 | Mild with rain | 53°F | 36°F |
| Dec 24 | Cloudy | 46°F | 31°F |
Seasonal Context for Pittsburgh
Late December in Pittsburgh typically brings fluctuating conditions as winter tries to establish itself. Snowfall remains possible, but rain events are common when temperatures hover just above freezing.
This forecast aligns with seasonal norms while also showcasing short periods of above-average warmth. Residents should remain flexible as daily changes may occur with limited notice.
What to Watch Closely
- Rapid temperature changes that can impact road conditions
- Rain followed by overnight cold leading to icy surfaces
- Cloud cover that keeps temperatures from warming as expected
Staying alert to daily updates helps manage these transitions safely.
Final Thoughts on the Pittsburgh Weather 10 Day Forecast
The Pittsburgh weather 10 day outlook paints a picture of winter in transition. Cold air makes an early statement, warmer systems briefly push back, and rain becomes the dominant form of precipitation as the holiday approaches. With frequent shifts ahead, preparation and awareness will make navigating the next ten days easier.
How are these weather changes shaping your plans this week? Share your thoughts and stay tuned for continued updates.