Winter
Dec → Feb3 to 5°
nights -5 to -2°
- 9 rainy days · 73 mm
When is the best time to visit Pittsburgh?
- Jan3°not recommended
- Feb4°not recommended
- Mar10°not recommended
- Apr17°fair
- May22°recommended
- Jun26°recommended
- Jul28°fair
- Aug27°fair
- Sep24°recommended
- Oct17°recommended
- Nov11°fair
- Dec5°not recommended
RecommendedFairNot recommended· afternoon temperature
The weather in Pittsburgh, month by month
The table of averages, month by month
| Month | High | Low | Rainfall | Rainy days | Best |
|---|---|---|---|---|---|
| January | 3° | -5° | 78 mm | 9 d | |
| February | 4° | -4° | 65 mm | 9 d | |
| March | 10° | 0° | 82 mm | 10 d | |
| April | 17° | 5° | 86 mm | 11 d | |
| May | 22° | 11° | 104 mm | 12 d | ✓ |
| June | 26° | 16° | 116 mm | 11 d | ✓ |
| July | 28° | 18° | 100 mm | 10 d | |
| August | 27° | 17° | 97 mm | 9 d | |
| September | 24° | 13° | 90 mm | 8 d | ✓ |
| October | 17° | 7° | 78 mm | 10 d | ✓ |
| November | 11° | 2° | 77 mm | 9 d | |
| December | 5° | -2° | 77 mm | 10 d |
The four seasons in Pittsburgh, in figures
What the 2015-2024 averages (Pittsburgh Allegheny County Airport) show, season by season, to compare at a glance instead of reading twelve rows of a table.
Spring
Mar → May10 to 22°
nights 0 to 11°
- 11 rainy days · 91 mm
Summer
Jun → Aug26 to 28°
nights 16 to 18°
- 10 rainy days · 104 mm
Autumn
Sep → Nov11 to 24°
nights 2 to 13°
- 9 rainy days · 82 mm
Book early for May to June and September to October
The timing is right, so it is right for everyone: in these months the best places to stay and the small-group tours go first. Here is where to start.
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Daylight in Pittsburgh, month by month
The time between sunrise and sunset, from shortest to longest. Not to be confused with the sunshine hours in the table above, which count clear skies. In June there are 15h02 of daylight, in December 9h18, a difference of 5h44.
9h35Jan
10h37Feb
11h50Mar
13h14Apr
14h24May
15h02Jun
14h47Jul
13h45Aug
12h24Sep
11h03Oct
9h52Nov
9h18Dec
Calculated for the latitude of the reference point "Pittsburgh Allegheny County Airport" (40.35°). Values on the 15th of each month, local solar time.
What to do in Pittsburgh, month by month
What to see and do
| Activity | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sightseeing & walks | ||||||||||||
| Long days |
favourablewith compromisesunfavourable
- Sightseeing & walks: March, April, May, June, July, August, September, October, November
- Long days: May, June, July
Grid derived from the climate averages (temperature, rainfall), not from an opinion.
Travelling off-peak
Month by month, in detail
January
Not recommended3°-5° at night
- 78 mm · 9 d
Low season, lower prices
February
Not recommended4°-4° at night
- 65 mm · 9 d
Low season, lower prices
March
Not recommended10°0° at night
- 82 mm · 10 d
Low season, lower prices
April
Fair17°5° at night
- 86 mm · 11 d
Low season, lower prices
May
Recommended22°11° at night
- 104 mm · 12 d
Busy, without the crush
June
Recommended26°16° at night
- 116 mm · 11 d
Busy, without the crush
July
Fair28°18° at night
- 100 mm · 10 d
Busy, without the crush
August
Fair27°17° at night
- 97 mm · 9 d
Busy, without the crush
September
Recommended24°13° at night
- 90 mm · 8 d
Busy, without the crush
October
Recommended17°7° at night
- 78 mm · 10 d
Busy, without the crush
November
Fair11°2° at night
- 77 mm · 9 d
Low season, lower prices
December
Not recommended5°-2° at night
- 77 mm · 10 d
Quiet, then the holidays
Read the twelve months in detail
January. Deep winter: 3 °C at the warmest of the day, -5 °C at night. Expect 9 days of rain in the month (78 mm). Low season: fewer people, lower prices.
February. Deep winter: 4 °C at the warmest of the day, -4 °C at night. Expect 9 days of rain in the month (65 mm). Low season: fewer people, lower prices.
March. Cool: 10 °C at best, 0 °C at night. Expect 10 days of rain in the month (82 mm). Low season: fewer people, lower prices.
April. Cool: 17 °C at best, 5 °C at night. Expect 11 days of rain in the month (86 mm). Low season: fewer people, lower prices.
May. Mild, 22 °C in the afternoon and 11 °C early in the morning. Expect 12 days of rain in the month (104 mm). Busy season, without the crush.
June. 26 °C in the afternoon and 16 °C at night. Expect 11 days of rain in the month (116 mm). Busy season, without the crush.
July. 28 °C in the afternoon and 18 °C at night. Expect 10 days of rain in the month (100 mm). Busy season, without the crush.
August. 27 °C in the afternoon and 17 °C at night. Expect 9 days of rain in the month (97 mm). Busy season, without the crush.
September. Mild, 24 °C in the afternoon and 13 °C early in the morning. Expect 8 days of rain in the month (90 mm). Busy season, without the crush.
October. Cool: 17 °C at best, 7 °C at night. Expect 10 days of rain in the month (78 mm). Busy season, without the crush.
November. Cool: 11 °C at best, 2 °C at night. Expect 9 days of rain in the month (77 mm). Low season: fewer people, lower prices.
December. Deep winter: 5 °C at the warmest of the day, -2 °C at night. Expect 10 days of rain in the month (77 mm). Quiet at the start of the month, then busier as the holidays approach.
Same season, other ideas
Their best time overlaps with this one: worth comparing before you book.
Frequently asked questions
When is the best time to visit Pittsburgh?
May to June and September to October: over these months, average highs range from 17 to 26 °C, with 10 days of rain a month on average (2015-2024 averages, Pittsburgh Allegheny County Airport).
Which month should you avoid in Pittsburgh?
March: it is the wettest of the months to avoid, with 82 mm over 10 days of rain on average over 2015-2024 at the reference point (Pittsburgh Allegheny County Airport).
What is the hottest month in Pittsburgh?
July, with 28 °C on average in the afternoon and 18 °C at night. 2015-2024 averages (Pittsburgh Allegheny County Airport).
What is the coldest month in Pittsburgh?
January, with 3 °C at best during the day and -5 °C at night. 2015-2024 averages (Pittsburgh Allegheny County Airport).
What is the driest month in Pittsburgh?
February: 65 mm over 9 days of rain, against 116 mm in June, the wettest month.
Does it get cold at night in Pittsburgh?
The gap between day and night reaches 12 °C in April: 17 °C in the afternoon, 5 °C at dawn. Pack an extra layer, even in high season.
Plan this trip
📒 The free printable Pittsburgh guide: itinerary, map, where to sleep→
🧭 When to visit the American West: the country overview→
🗓️ Best time to visit: all our destinations→
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