Climate and monthly weather forecastDarby, PA
Climate and monthly weather forecast
Weather in January
January, like December, in Darby, Pennsylvania, is a wintry winter month, with an average temperature varying between 37.4°F (3°C) and 25.7°F (-3.5°C). The month of January sees the lowest average temperatures, reaching 37.4°F (3°C) at the peak and 25.7°F (-3.5°C) at the low. Weather in January »Weather in February
The last month of the winter, February, is another cold month in Darby, Pennsylvania, with an average temperature varying between 28°F (-2.2°C) and 41.4°F (5.2°C). The arrival of February sees an average high-temperature of a still cold 41.4°F (5.2°C), hardly diverging from January's 37.4°F (3°C). Weather in February »Weather in March
March, the first month of the spring in Darby, is a chilly month, with an average temperature varying between 49.8°F (9.9°C) and 35.1°F (1.7°C). In Darby, stepping into March brings a gentle temperature nudge, moving slightly up 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 in Darby, Pennsylvania, is a comfortable spring month, with an average temperature fluctuating between 61.7°F (16.5°C) and 45°F (7.2°C). Darby's transition into April sees a rise in the average high-temperature, advancing from a frosty 49.8°F (9.9°C) in March to a comfortable 61.7°F (16.5°C). Weather in April »Weather in May
May, the last month of the spring in Darby, is a pleasant month, with an average temperature ranging between max 72°F (22.2°C) and min 54.7°F (12.6°C). The arrival of May brings a temperature shift, with the average high-temperature escalating from a comfortable 61.7°F (16.5°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 Darby, is a moderately hot month, with an average temperature varying between 63.1°F (17.3°C) and 79.9°F (26.6°C). June signals a minor shift in the average high-temperature, moving from May's agreeable 72°F (22.2°C) to a moderately hot 79.9°F (26.6°C). Weather in June »Weather in July
July in Darby, Pennsylvania, is a hot summer month, with an average temperature varying between 68.5°F (20.3°C) and 86°F (30°C). The warmest period is July, when temperatures fluctuate between an average high of 86°F (30°C) and a low of 68.5°F (20.3°C). The heat index in July is evaluated at a torrid 96.8°F (36°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Darby, Pennsylvania, with an average temperature varying between 83.7°F (28.7°C) and 67.6°F (19.8°C). The dawn of August sees an average high-temperature of a warm 83.7°F (28.7°C), subtly contrasting with July's 86°F (30°C). Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Darby, Pennsylvania, with an average temperature ranging between min 60.8°F (16°C) and max 76.6°F (24.8°C). Darby in September undergoes a slight reduction in the average high-temperature, shifting from August's warm 83.7°F (28.7°C) to a still moderately hot 76.6°F (24.8°C). Weather in September »Weather in October
October, the same as September, is another comfortable autumn month in Darby, Pennsylvania, with an average temperature fluctuating between 65.1°F (18.4°C) and 50.9°F (10.5°C). Darby's October weather shows a moderate shift in high-temperatures, falling from September's moderately hot 76.6°F (24.8°C) to a refreshing 65.1°F (18.4°C). Weather in October »Weather in November
November, the last month of the autumn in Darby, is another cool month, with an average temperature fluctuating between 39.2°F (4°C) and 52.7°F (11.5°C). In Darby, entering November brings a temperature decrement, reducing from October's refreshing 65.1°F (18.4°C) to a cool 52.7°F (11.5°C). Weather in November »Weather in December
December, the first month of the winter in Darby, is still a chilly month, with an average temperature ranging between max 44.1°F (6.7°C) and min 32.7°F (0.4°C). December's onset corresponds with a subtle shift in the average high-temperature, slightly moving from a cool 52.7°F (11.5°C) in November to a frosty 44.1°F (6.7°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
Darby records the coldest temperatures in January, averaging a high of 37.4°F (3°C) and a low of 25.7°F (-3.5°C).
The month with the least rainfall in Darby is January, when the rain falls for 6.6 days and typically collects 1.46" (37mm) of precipitation.
Throughout the year, there are 142 rainfall days, and 24.41" (620mm) of precipitation is accumulated.
January through April, November and December are months with snowfall.
Throughout the year, there are 11.3 snowfall days, and 6.18" (157mm) of snow is accumulated.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
February, October and December, with an average relative humidity of 77%, are most humid months.
The month with the least sunshine is February, with an average of 4.9h of sunshine.
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.
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.
April is the least humid month, with an average relative humidity of 71%.
In Darby, snow does not fall in May through October.
The months with the highest UV index in Darby are May through August, with an average maximum UV index of 6.
With an average of 15h and 0min of daylight, June has the longest days of the year.
During the warmest month in Darby, July, temperatures average a high of 86°F (30°C) and a low of 68.5°F (20.3°C).
July has the most sunshine of the year, with an average of 10.7h of sunshine.
August is the month with the most rainfall. Rain falls for 15.3 days and accumulates 2.95" (75mm) of precipitation.
The month with the shortest days in Darby is December, with an average of 9h and 24min of daylight.
Average temperature
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
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
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
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
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
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
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
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
Darby, PA
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
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 54min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 30min - Average sunshine in May:
8h and 42min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
10h and 42min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 54min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 42min - Average sunshine in December:
5h and 6min
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
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
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
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
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).
