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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Sewickley, Pennsylvania, is another cold winter month, with an average temperature fluctuating between 20.3°F (-6.5°C) and 32.9°F (0.5°C). January, marked by an average high-temperature of 32.9°F (0.5°C) and a low-temperature of 20.3°F (-6.5°C), is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Sewickley, is also a wintry month, with temperature in the range of an average high of 37°F (2.8°C) and an average low of 22.6°F (-5.2°C). Entering February, the average high-temperature is recorded at a still cold 37°F (2.8°C), exhibiting a minimal shift from January's 32.9°F (0.5°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Sewickley, Pennsylvania, with an average temperature ranging between max 47.1°F (8.4°C) and min 31.1°F (-0.5°C). Sewickley's transition into March is marked by a rise in the average high-temperature, advancing from a cold 37°F (2.8°C) in February to a chilly 47.1°F (8.4°C). Weather in March »
Weather in April
April in Sewickley, Pennsylvania, is a refreshing spring month, with temperature in the range of an average low of 41°F (5°C) and an average high of 60.3°F (15.7°C). The arrival of April brings a change in Sewickley's weather, with average high-temperatures moving from March's frosty 47.1°F (8.4°C) to a moderate 60.3°F (15.7°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Sewickley, Pennsylvania, with an average temperature varying between 50.9°F (10.5°C) and 72°F (22.2°C). As Sewickley transitions into May, a rise in the average high-temperature is observed, moving from a moderate 60.3°F (15.7°C) in April to an agreeable 72°F (22.2°C). Weather in May »
Weather in June
June, the first month of the summer in Sewickley, is a warm month, with temperature in the range of an average low of 58.1°F (14.5°C) and an average high of 79°F (26.1°C). The start of June signals a slight increase in the average high-temperature, moving from an agreeable 72°F (22.2°C) in May to a moderately hot 79°F (26.1°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Sewickley, Pennsylvania, with an average temperature fluctuating between 61.9°F (16.6°C) and 83.5°F (28.6°C). Sewickley, Pennsylvania, reaches its highest average temperatures in July, measuring 83.5°F (28.6°C) at the peak and 61.9°F (16.6°C) at the lowest. For most parts of July, the heat index is estimated at a hot 91.4°F (33°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Sewickley, Pennsylvania, with an average temperature ranging between min 60.4°F (15.8°C) and max 82°F (27.8°C). The onset of August brings with it an average high-temperature of a still warm 82°F (27.8°C), showing a negligible variation from the month before. Weather in August »
Weather in September
September, the first month of the autumn in Sewickley, is also a moderately hot month, with an average temperature fluctuating between 75.4°F (24.1°C) and 55.6°F (13.1°C). As September begins, there is a minor decrease in the average high-temperature, softly falling from 82°F (27.8°C) in August to a still warm 75.4°F (24.1°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Sewickley, Pennsylvania, with an average temperature fluctuating between 45.3°F (7.4°C) and 61.7°F (16.5°C). With October's arrival, Sewickley, Pennsylvania, sees a decrease in average high-temperatures, moving from a moderately hot 75.4°F (24.1°C) in September to a comfortable 61.7°F (16.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Sewickley, is also a frosty month, with an average temperature varying between 48.7°F (9.3°C) and 33.8°F (1°C). With the onset of November, Sewickley's average high-temperature adjusts, receding from October's refreshing 61.7°F (16.5°C) to a chilly 48.7°F (9.3°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Sewickley, Pennsylvania, with an average temperature varying between 39°F (3.9°C) and 28°F (-2.2°C). In December, the average high-temperature goes from a chilly 48.7°F (9.3°C) in November to an icy 39°F (3.9°C). Weather in December »
Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
January is the coldest month, with the temperature often reaching an average high of 32.9°F (0.5°C) and an average low of 20.3°F (-6.5°C).
What is the driest month?
January is the month with the least rainfall. Rain falls for 8.1 days and accumulates 1.22" (31mm) of precipitation.
How much does it rain?
Throughout the year, there are 154.8 rainfall days, and 21.22" (539mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through May, October through December.
How much does it snow?
Throughout the year, there are 49.9 snowfall days, and 10.12" (257mm) of snow is accumulated.
What is the month with the least sunshine?
With an average of 2.9h of sunshine, January has the least sunshine of the year.
What is the most humid month?
February is the most humid month, with an average relative humidity of 85%.
What is the snowiest month?
February is the month with the most snowfall in Sewickley. Snow falls for 11.8 days and accumulates 2.76" (70mm) of snow.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
What are the months with the highest UV index?
The months with the highest UV index are May through July, with an average maximum UV index of 6.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 0min of daylight.
What are the warmest months?
July, noted for its average high-temperature of 83.5°F (28.6°C) and an average low-temperature of 61.9°F (16.6°C), is considered the warmest month.
What is the least humid month?
The months with the lowest humidity in Sewickley are July and August, with an average relative humidity of 75%.
What is the rainiest month?
The month with the most rainfall is July, when the rain falls for 16.9 days and typically aggregates up to 2.36" (60mm) of precipitation.
What month has the most sunshine?
The month with the most sunshine is August, with an average of 10h of sunshine.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
What is the month with the lowest UV index?
With an average maximum UV index of 1, December is the month with the lowest UV index.
Average temperature
Sewickley, PA
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (32.9°F).
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure
Sewickley, PA
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
29.99"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Sewickley, PA
- Average wind speed in January:
8.1mph - Average wind speed in February:
7.7mph - Average wind speed in March:
7.3mph - Average wind speed in April:
7.5mph - Average wind speed in May:
6mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.7mph - Average wind speed in September:
5.2mph - Average wind speed in October:
6.3mph - Average wind speed in November:
6.9mph - Average wind speed in December:
7.4mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity
Sewickley, PA
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July and August (75%).
Average rainfall
Sewickley, PA
- Average rainfall in January:
1.22" - Average rainfall in February:
1.38" - Average rainfall in March:
1.5" - Average rainfall in April:
2.24" - Average rainfall in May:
2.24" - Average rainfall in June:
2.28"
- Average rainfall in July:
2.36" - Average rainfall in August:
1.73" - Average rainfall in September:
1.73" - Average rainfall in October:
1.61" - Average rainfall in November:
1.34" - Average rainfall in December:
1.57"
The wettest month (with the highest rainfall) is July (2.36").
The driest month (with the least rainfall) is January (1.22").
Average rainfall days
Sewickley, PA
- Average rainfall days in January:
8.1 days - Average rainfall days in February:
8.2 days - Average rainfall days in March:
11.7 days - Average rainfall days in April:
15.1 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
16.2 days
- Average rainfall days in July:
16.9 days - Average rainfall days in August:
15.3 days - Average rainfall days in September:
13.1 days - Average rainfall days in October:
13.4 days - Average rainfall days in November:
9.2 days - Average rainfall days in December:
10.1 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.1 days).
Average snowfall
Sewickley, PA
The month with the highest snowfall is February (2.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Sewickley, PA
- Average snowfall days in January:
14.3 days - Average snowfall days in February:
11.8 days - Average snowfall days in March:
6.9 days - Average snowfall days in April:
1.8 days - Average snowfall days in May:
0.3 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.2 days - Average snowfall days in November:
4.1 days - Average snowfall days in December:
10.5 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Sewickley, PA
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
2h and 5min - Average sunshine in February:
3h and 4min - Average sunshine in March:
5h and 1min - Average sunshine in April:
7h and 2min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 1min - Average sunshine in October:
5h and 1min - Average sunshine in November:
4h and 5min - Average sunshine in December:
3h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days
Sewickley, PA
- Average sunshine days in January:
11.8 days - Average sunshine days in February:
10.7 days - Average sunshine days in March:
13 days - Average sunshine days in April:
12 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
12.2 days
- Average sunshine days in July:
11.5 days - Average sunshine days in August:
13.6 days - Average sunshine days in September:
14.1 days - Average sunshine days in October:
15 days - Average sunshine days in November:
16.6 days - Average sunshine days in December:
12.9 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is February (10.7 days).
Average UV index
Sewickley, PA
The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Sewickley, PA
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility
Sewickley, PA
The months with the highest visibility are April, June, August and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September, October and December (5mi).
Sewickley, Pennsylvania, USA
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