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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, the same as December, is a wintry winter month in Upper Darby, Pennsylvania, with an average temperature varying between 25.7°F (-3.5°C) and 37.4°F (3°C). January, with its average high-temperature of 37.4°F (3°C) and an average low-temperature of 25.7°F (-3.5°C), holds the record as the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is also an icy month in Upper Darby, Pennsylvania, with temperature in the range of an average low of 28°F (-2.2°C) and an average high of 41.4°F (5.2°C). February's weather displays an average high-temperature of a still cold 41.4°F (5.2°C), slightly varied from January's 37.4°F (3°C). Weather in February »
Weather in March
March, the first month of the spring in Upper Darby, is a frosty month, with temperature in the range of an average low of 35.1°F (1.7°C) and an average high of 49.8°F (9.9°C). March introduces a marginal temperature uplift, with average high-temperatures adjusting from February's icy 41.4°F (5.2°C) to a chilly 49.8°F (9.9°C). Weather in March »
Weather in April
April is a comfortable spring month in Upper Darby, Pennsylvania, with an average temperature ranging between max 61.7°F (16.5°C) and min 45°F (7.2°C). With the onset of April, the average high-temperature slightly shifts from March's frosty 49.8°F (9.9°C) to a comfortable 61.7°F (16.5°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Upper Darby, Pennsylvania, with an average temperature varying between 72°F (22.2°C) and 54.7°F (12.6°C). With the arrival of May, the average high-temperature transitions from an enjoyable 61.7°F (16.5°C) in April to a pleasant 72°F (22.2°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Upper Darby, Pennsylvania, with an average temperature varying between 63.1°F (17.3°C) and 79.9°F (26.6°C). June marks a minor ascent in the average high-temperature, adjusting from May's agreeable 72°F (22.2°C) to a warm 79.9°F (26.6°C). Weather in June »
Weather in July
July is a hot summer month in Upper Darby, Pennsylvania, with temperature in the range of an average high of 86°F (30°C) and an average low of 68.5°F (20.3°C). July, with its average high-temperature of 86°F (30°C) and an average low-temperature of 68.5°F (20.3°C), holds the record as the warmest month. The heat index value for July is appraised at a sweltering 96.8°F (36°C). Weather in July »
Weather in August
August, the last month of the summer in Upper Darby, is also a moderately hot month, with an average temperature fluctuating between 67.6°F (19.8°C) and 83.7°F (28.7°C). Upper Darby experiences a minor change to a moderately hot 83.7°F (28.7°C) in average high-temperature during August, closely reflecting July. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Upper Darby, Pennsylvania, with an average temperature fluctuating between 60.8°F (16°C) and 76.6°F (24.8°C). As September commences, the average high-temperature subtly reduces, transitioning from 83.7°F (28.7°C) in August to a still moderately hot 76.6°F (24.8°C). Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Upper Darby, Pennsylvania, with an average temperature fluctuating between 50.9°F (10.5°C) and 65.1°F (18.4°C). Onset of October comes with a temperature decline, the average high falling from a moderately hot 76.6°F (24.8°C) in September to a comfortable 65.1°F (18.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Upper Darby, Pennsylvania, with an average temperature varying between 39.2°F (4°C) and 52.7°F (11.5°C). November's arrival coincides with a drop in the average high-temperature, decreasing from October's comfortable 65.1°F (18.4°C) to a fresh 52.7°F (11.5°C). Weather in November »
Weather in December
December, the first month of the winter in Upper Darby, is still a chilly month, with temperature in the range of an average high of 44.1°F (6.7°C) and an average low of 32.7°F (0.4°C). December ushers in a minute temperature change, with average high-temperatures reducing from November's fresh 52.7°F (11.5°C) to a chilly 44.1°F (6.7°C). Weather in December »
Updated: Jul 12, 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?
With average high and low temperatures of 37.4°F (3°C) and 25.7°F (-3.5°C) respectively, January is Upper Darby's coldest month.
What is the driest month in Upper Darby?
The month with the least rainfall is January, when the rain falls for 6.6 days and typically collects 1.46" (37mm) of precipitation.
How many days does it rain?
Throughout the year, there are 142 rainfall days, and 24.41" (620mm) of precipitation is accumulated.
When does it snow?
January through April, November and December are months with snowfall in Upper Darby, Pennsylvania.
How much does it snow?
In Upper Darby, during the entire year, snow falls for 11.3 days and aggregates up to 6.18" (157mm) of snow.
What are the months with the lowest UV index?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Upper Darby.
What is the most humid month?
February, October and December, with an average relative humidity of 77%, are most humid months.
What is the month with the least sunshine?
With an average of 4.9h of sunshine, February has the least sunshine of the year.
What is the snowiest month?
The month with the most snowfall is March, when snow falls for 2.8 days and typically aggregates up to 2.05" (52mm) 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 is the least humid month?
The least humid month is April, with an average relative humidity of 71%.
When it does not snow?
May through October are months without snowfall.
When is the highest UV index?
May through August, with an average maximum UV index of 6, are months with the highest UV index.
When are the longest days?
The month with the longest days is June, with an average of 15h and 0min of daylight.
What month is the hottest?
The month of July sees the average highest temperatures, reaching 86°F (30°C) at the peak and 68.5°F (20.3°C) at the low.
What month has the most sunshine?
With an average of 10.7h of sunshine, July has the most sunshine of the year in Upper Darby.
What is the rainiest month?
The month with the most rainfall is August, when the rain falls for 15.3 days and typically aggregates up to 2.95" (75mm) of precipitation.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 24min of daylight.
Average temperature
Upper Darby, PA
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37.4°F).
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure
Upper Darby, PA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Upper Darby, PA
- Average wind speed in January:
8.4mph - Average wind speed in February:
8.5mph - Average wind speed in March:
8.5mph - Average wind speed in April:
8.5mph - Average wind speed in May:
6.8mph - Average wind speed in June:
6.4mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.5mph - Average wind speed in September:
6mph - Average wind speed in October:
7.2mph - Average wind speed in November:
7.6mph - Average wind speed in December:
7.8mph
The windiest months (with the highest average wind speed) are February, March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity
Upper Darby, PA
The months with the highest relative humidity are February, October and December (77%).
The month with the lowest relative humidity is April (71%).
Average rainfall
Upper Darby, PA
- Average rainfall in January:
1.46" - Average rainfall in February:
1.57" - Average rainfall in March:
2.13" - Average rainfall in April:
2.01" - Average rainfall in May:
2.01" - Average rainfall in June:
2.2"
- Average rainfall in July:
2.48" - Average rainfall in August:
2.95" - Average rainfall in September:
1.57" - Average rainfall in October:
1.85" - Average rainfall in November:
1.77" - Average rainfall in December:
2.4"
The wettest month (with the highest rainfall) is August (2.95").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days
Upper Darby, PA
- Average rainfall days in January:
6.6 days - Average rainfall days in February:
8.3 days - Average rainfall days in March:
11.5 days - Average rainfall days in April:
12.8 days - Average rainfall days in May:
14.6 days - Average rainfall days in June:
14.6 days
- Average rainfall days in July:
16.9 days - Average rainfall days in August:
15.3 days - Average rainfall days in September:
12.3 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
8 days - Average rainfall days in December:
9.6 days
The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is January (6.6 days).
Average snowfall
Upper Darby, PA
The month with the highest snowfall is March (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Upper Darby, PA
- Average snowfall days in January:
3.3 days - Average snowfall days in February:
3.1 days - Average snowfall days in March:
2.8 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0 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 days - Average snowfall days in November:
0.4 days - Average snowfall days in December:
1.5 days
The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Upper Darby, 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 2min - 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:
10h and 0min - 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 24min).
- Average sunshine in January:
5h and 0min - Average sunshine in February:
4h and 5min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 3min - Average sunshine in May:
8h and 4min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 2min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 4min - Average sunshine in December:
5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days
Upper Darby, PA
- Average sunshine days in January:
20.8 days - Average sunshine days in February:
17.3 days - Average sunshine days in March:
16.2 days - Average sunshine days in April:
16.1 days - Average sunshine days in May:
14.2 days - Average sunshine days in June:
12.6 days
- Average sunshine days in July:
12.1 days - Average sunshine days in August:
13.4 days - Average sunshine days in September:
16.2 days - Average sunshine days in October:
17.9 days - Average sunshine days in November:
20.7 days - Average sunshine days in December:
19.7 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is July (12.1 days).
Average UV index
Upper Darby, PA
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Upper Darby, PA
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility
Upper Darby, PA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Upper Darby, Pennsylvania, USA
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