Pittsburgh, United States experiences average highs of 17°C (63°F) and lows of 8°C (46°F) throughout the year. Rainfall is frequent, averaging about 13 rainy days per month. Average highs have cooled by 0.9°C (1.6°F) across the available records.
Pittsburgh, United States Weather & Climate 2026
Monthly climate averages for Pittsburgh, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Nov 
Wetter season: Apr–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5.2/10
Best: May, June, July, August, September
UV Index
5
Low
Temperature 17°C / 8°C
Feels Like 16°C / 6°C
Rainy Days 13
Rainfall 110 mm
Sunshine 8 h
Humidity 73%
Wind Speed 15 km/h
Dew Point 8°C
Snow Days 6 days
Frost Days 14 days
Hottest Month
29°C
July
Avg Low20°C
Rain14days
Coldest Month
-4°C
January
Avg High4°C
Rain12days
Driest Month
10days
November
Avg High11°C
Avg Low3°C
Windiest Month
19 km/h
March (Gusts 45)
Worst Time to Visit
Consider avoiding January, February, December due to very cold temperatures, frequent rain.
Sun Position
Sunrise 05:50
Daylight 15h
Sunset 20:53
Live conditions—
Pittsburgh on the map · live conditions
Pittsburgh, United States
- Continent
- Americas
- Country
- United States
- City
- Pittsburgh
- Population
- 304.4K
- Elevation
- 233 m
- Coordinates
- 40.44°, -80.00°
Seasonal Breakdown
Spring
Mar–May
Avg High 17°C
Avg Low 7°C
Rain 14 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 28°C
Avg Low 18°C
Rain 14 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 18°C
Avg Low 10°C
Rain 11 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 6°C
Avg Low -2°C
Rain 12 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 4°C / -4°C . Feb: 7°C / -2°C . Mar: 12°C / 2°C . Apr: 17°C / 6°C . May: 22°C / 12°C . Jun: 26°C / 17°C . Jul: 29°C / 20°C . Aug: 28°C / 19°C . Sep: 25°C / 16°C . Oct: 19°C / 10°C . Nov: 11°C / 3°C . Dec: 6°C / -1°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 98 mm. Feb: 110 mm. Mar: 105 mm. Apr: 118 mm. May: 151 mm. Jun: 133 mm. Jul: 125 mm. Aug: 92 mm. Sep: 109 mm. Oct: 108 mm. Nov: 80 mm. Dec: 93 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 73%. Feb: 70%. Mar: 67%. Apr: 69%. May: 77%. Jun: 75%. Jul: 76%. Aug: 76%. Sep: 75%. Oct: 74%. Nov: 72%. Dec: 74%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 17 km/h . Feb: 18 km/h . Mar: 19 km/h . Apr: 18 km/h . May: 15 km/h . Jun: 14 km/h . Jul: 12 km/h . Aug: 12 km/h . Sep: 13 km/h . Oct: 15 km/h . Nov: 16 km/h . Dec: 17 km/h .
Sunshine
Sunshine
Sunshine: Jan: 5h. Feb: 6h. Mar: 7h. Apr: 9h. May: 10h. Jun: 11h. Jul: 11h. Aug: 11h. Sep: 9h. Oct: 7h. Nov: 6h. Dec: 5h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 5. Apr: UV 5. May: UV 6. Jun: UV 7. Jul: UV 7. Aug: UV 7. Sep: UV 5. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 12 days. Feb: 9 days. Mar: 5 days. Apr: 2 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 3 days. Dec: 7 days.
Climate Trends
Average highs have cooled by 0.9°C (1.6°F) across the available records. Average rainfall is trending wetter by about 9 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 29°C | Jul · 29°C |
| Coldest month | Jan 2025 · -9°C | Jan · -4°C |
| Wettest month | May 2025 · 237 mm | May · 151 mm |
| Windiest month | Mar 2025 · 19 km/h | Mar · 19 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Fair May best
Good June best
Excellent July best
Good August best
Excellent September best
Excellent October
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 4°C / -4°C | 0°C / -9°C | 12days (98 mm) Wet | 4.7h Fair | 73% Muggy | 2.2 Moderate | Poor | View Details |
| February | 7°C / -2°C | 4°C / -7°C | 12days (110 mm) Wet | 5.8h Fair | 70% Muggy | 3.1 Moderate | Poor | View Details |
| March | 12°C / 2°C | 9°C / -2°C | 12days (105 mm) Wet | 7.4h Good | 67% Muggy | 4.6 Moderate | Poor | View Details |
| April | 17°C / 6°C | 15°C / 3°C | 14days (118 mm) Wet | 8.8h Good | 69% Muggy | 5.3 High | Fair | View Details |
| May best | 22°C / 12°C | 22°C / 11°C | 16days (151 mm) Wet | 9.8h Good | 77% Humid | 6.3 High | Good | View Details |
| June best | 26°C / 17°C | 28°C / 17°C | 15days (133 mm) Wet | 11h Excellent | 75% Muggy | 6.9 High | Excellent | View Details |
| July best | 29°C / 20°C | 32°C / 22°C | 14days (125 mm) Wet | 11h Excellent | 76% Humid | 7 High | Good | View Details |
| August best | 28°C / 19°C | 30°C / 20°C | 14days (92 mm) Wet | 10.7h Excellent | 76% Humid | 6.6 High | Excellent | View Details |
| September best | 25°C / 16°C | 26°C / 16°C | 11days (109 mm) Wet | 9.1h Good | 75% Muggy | 5.2 High | Excellent | View Details |
| October | 19°C / 10°C | 18°C / 8°C | 11days (108 mm) Wet | 7.2h Good | 74% Muggy | 3.8 Moderate | Good | View Details |
| November | 11°C / 3°C | 8°C / -1°C | 10days (80 mm) Wet | 5.9h Fair | 72% Muggy | 2.5 Moderate | Poor | View Details |
| December | 6°C / -1°C | 3°C / -5°C | 13days (93 mm) Wet | 4.5h Fair | 74% Muggy | 1.9 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Pittsburgh are May, June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Pittsburgh, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Pittsburgh is July, with average daytime highs of 29°C (84°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Pittsburgh is January, with average overnight lows of -4°C (24°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Pittsburgh is May, averaging 151mm of precipitation across 16 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Pittsburgh runs through May, June, April, July, with the heaviest rainfall in May. Based on 10-year averages for Pittsburgh.
Pittsburgh receives approximately 96 sunshine hours per year. The sunniest month is June with around 11 hours. Based on climate data for Pittsburgh.
The least favorable months to visit Pittsburgh are January, February, December, primarily due to very cold temperatures, frequent rain. For the best conditions, consider May, June, July, August, September instead.
The annual average UV index in Pittsburgh is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Pittsburgh is 73%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Pittsburgh receives snow. Months with snowfall average 6 snow days and 10 cm (4 in) of accumulation, with about 14 frost days during winter.
Average wind speeds in Pittsburgh are 15 km/h (9 mph). The windiest month is March with peak winds reaching 19 km/h (11 mph) (gusts up to 45 km/h / 28 mph).
Pittsburgh averages 3 clear-sky days per month with overall cloud cover around 65%. The clearest skies occur in October.
The annual average dew point in Pittsburgh is 8°C (46°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Pittsburgh has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Pittsburgh ranges from 6°C (43°F) to 16°C (61°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Pittsburgh. It earns a climate score of 8/10 with Excellent.
For June in Pittsburgh, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 26°C (80°F) and 15 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
Last updated: