Climate and monthly weather forecastDowningtown, PA
Climate and monthly weather forecast
The climate of Downingtown
Downingtown, Pennsylvania falls within the Köppen climate classification of Cfa—representing a humid subtropical climate without a dry season. This Eastern U.S. town experiences marked seasonal changes with characteristics influenced by this classification.Average high temperatures span from 35.4°F (1.9°C) in the chillier stretches of winter to a comfortable 84°F (28.9°C) at the height of summer. Equally, the lows range from a cool 23.7°F (-4.6°C) in the depths of December to a mild 66.2°F (19°C) in the summer months.
Humidity levels stay relatively constant throughout the year, hovering around 77% to 80%. Rainfall paints a varied picture, with the lowest monthly average rainfall of 1.61" (41mm) in February, increasing to a peak of 3.31" (84mm) in August. Precipitation occurs more or less throughout the year, with the number of days experiencing rainfall staying consistent, fluctuating between 6.7 days in January and 16.6 days in July.
As one navigates the transitional seasons, snowfall patterns highlight the waning grip of winter and the burgeoning hints of spring. The late winter months of January and February have an average snowfall of 2.32" (59mm), while the advent of spring brings a decrease in snowfall as March averages 3.46" (88mm). By April, the snowfall is nearly non-existent with just 0.28" (7mm) recorded.
The best time to visit Downingtown
The ideal time to visit Downingtown depends largely on the visitor's preferred weather conditions. Those who enjoy a mix of sunny and slightly cooler weather would find the spring months from April to June most appreciable. During these months, average high temperatures range from 60.3°F (15.7°C) to 78.4°F (25.8°C), while rainfall is moderate. Days are generally longer which allows visitors to maximize their sightseeing time, with daylight hour measures from 13.3 hours in April to an impressive 15 hours in June.The worst time to visit Downingtown
For individuals less inclined to cold and snowy conditions, the winter months encompassing December, January and February could be less appealing due to lower temperatures and weather conditions. During this period, average low temperatures range from 23.7°F (-4.6°C) to 30.6°F (-0.8°C). Moreover, these months also see the most snowfall, with an average snowfall of 1.54" (39mm) in December, and similar amounts in January and February.Spring weather in Downingtown
Spring in Downingtown, extending from March to May, signals a transition from the chilly winter temperatures. March sees a moderate average high of 48.2°F (9°C), enhancing to a pleasant 60.3°F (15.7°C) in April and 70.9°F (21.6°C) in May. It's during this period that the town sees increased rainfall, from an average of 2.2" (56mm) in March to 2.6" (66mm) in May, with corresponding rainfall days ranging from 12 to 16.8 days.Summer weather in Downingtown
June, July, and August constitute the summer months in Downingtown. The town experiences average high temperatures from 78.4°F (25.8°C) to 84°F (28.9°C). Humidity remains consistent, around 78% to 79%, and the region averages about 2.28" (58mm) to 3.31" (84mm) of rainfall. This season is the most suitable for engaging in outdoor activities as daylight hours are between 14.7 to 15 hours, providing ample sunshine for visitors.Autumn weather in Downingtown
Autumn, falling between September and November, is characterized by decreasing temperatures, with an average high dropping from 75°F (23.9°C) in September to a cooler 50.9°F (10.5°C) in November. Rainfall sees a downward trend from 1.89" (48mm) in September to 2.17" (55mm) in November.Winter weather in Downingtown
Winter in Downingtown, represented by the months between December and February, is portrayed by colder temperatures. High and low temperatures span from 35.4°F (1.9°C) to 41.9°F (5.5°C) and from 23.7°F (-4.6°C) to 30.6°F (-0.8°C) respectively. Snowfall is expected in these colder months, with amounts ranging from 1.54" (39mm) in December to a slightly lighter 2.32" (59mm) in January and February. Despite the cold, the region sees an increase in sunlight hours, with sunshine days peaking at 20.5 days in December.Weather in January
Starting off the year, the city of Downingtown, Pennsylvania experiences winter at its peak. Cold temperatures define January, with the mercury plunging to a bone-chilling low of 23.7°F (-4.6°C). Snowfall is also fairly common, turning the city into a picturesque winter wonderland. Weather in January »Weather in February
As winter persists in Downingtown, a small rise in temperatures can be detected when compared with the previous month. February is characterized by the continuation of cold weather, albeit with slightly warmer highs of up to 39.7°F (4.3°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Downingtown, Pennsylvania, with an average temperature ranging between max 48.2°F (9°C) and min 32.5°F (0.3°C). The shift from February to March is marked by a slight increase in the average high-temperature, moving from a wintry 39.7°F (4.3°C) to a frosty 48.2°F (9°C). Weather in March »Weather in April
April in Downingtown means complete transition into spring. The cold winter days are a thing of the past and citizens appreciate the warmth of spring. Temperatures show a significant leap with the high reaching an inviting 60.3°F (15.7°C). Weather in April »Weather in May
The Month of May experiences an advent of summer, with temperatures jumping significantly high to around 70.9°F (21.6°C). Following April’s showers, May ushers in vibrant spring colors in Downingtown, with Nature in full bloom. Weather in May »Weather in June
Downingtown welcomes peak summer in the month of June. The weather displays a fitting combination of heat and humidity, with typical high summer temperatures, soaring to about 78.4°F (25.8°C). Days are longer and nights shorter, providing ample sunshine hours for outdoor activities. Weather in June »Weather in July
July marks the zenith of summer in Downingtown, with the temperature hitting the year's maximum of 84°F (28.9°C). Amidst the peak temperatures, it is the month of highest humidity and heat that invites residents to find solace in air-conditioned indoor spaces or Downingtown's outdoor water bodies. Weather in July »Weather in August
In August, Downingtown experiences a slight dip in temperatures, allowing for some respite from the intense July heat. As the city moves towards the end of summer, temperatures still run high at approximately 81.1°F (27.3°C). Despite the heat, the weather remains pleasant, and the signature sunshine persists. Weather in August »Weather in September
September marks the onset of the most temperate season in Downingtown, with the weather becoming even milder. The heat of August gives way to a median temperature of 75°F (23.9°C). September brings a breath of fresh air as the city transitions into fall. Weather in September »Weather in October
In October, Downingtown experiences the peak of fall with a magnificent display of color in the city's parks. The weather takes a cooler turn, signifying the transition from summer to fall. As the month progresses, the daylight hours decrease, indicating shorter days and longer nights. Weather in October »Weather in November
November in Downingtown signifies the onset of winter, with colder days and longer nights. The charming autumn hues of October fade into the stark winter landscape and the first hints of chill set in. The average high temperature falls to a cooler 50.9°F (10.5°C), indicating the approach of winter. Weather in November »Weather in December
Closing off the year, Downingtown experiences a full return of winter in December. With temperatures dropping further to a biting low of 30.6°F (-0.8°C), it is indeed the coldest month. The city sets into a festive mood, prepping for the Christmas season amidst a potential white landscape. 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
Downingtown reaches its average lowest temperatures in January, measuring 35.4°F (1.9°C) at the peak and 23.7°F (-4.6°C) at the lowest.
In Downingtown, during the entire year, the rain falls for 145.6 days and collects up to 26.81" (681mm) of precipitation.
Months with snowfall are January through May, October through December.
Throughout the year, there are 17.2 snowfall days, and 10.47" (266mm) of snow is accumulated.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
February, May and October, with an average relative humidity of 80%, are most humid months.
The month with the least rainfall is February, when the rain falls for 7.5 days and typically collects 1.61" (41mm) of precipitation.
With an average of 4.6h of sunshine, February has the least sunshine of the year.
The month with the most snowfall is March, when snow falls for 4.4 days and typically aggregates up to 3.46" (88mm) 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.
With an average relative humidity of 75%, April is the least humid month in Downingtown, Pennsylvania.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
In Downingtown, snow does not fall in June through September.
June has the longest days of the year, with an average of 15h and 0min of daylight.
July, known for its average high temperature of 84°F (28.9°C) and an average low temperature of 66.2°F (19°C), is the warmest month.
With an average of 10.6h of sunshine, July has the most sunshine of the year.
August is the month with the most rainfall. Rain falls for 15.4 days and accumulates 3.31" (84mm) of precipitation.
The month with the shortest days is December, with an average of 9h and 24min of daylight.
Average temperature
Downingtown, PA
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.4°F).
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (23.7°F).
Average pressure
Downingtown, 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:
30.06"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Downingtown, PA
- Average wind speed in January:
8.5mph - Average wind speed in February:
8.4mph - Average wind speed in March:
8.5mph - Average wind speed in April:
8.3mph - Average wind speed in May:
6.5mph - Average wind speed in June:
6.1mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5.6mph - Average wind speed in October:
7mph - Average wind speed in November:
7.4mph - Average wind speed in December:
8mph
The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity
Downingtown, PA
The months with the highest relative humidity are February, May and October (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall
Downingtown, PA
- Average rainfall in January:
1.77" - Average rainfall in February:
1.61" - Average rainfall in March:
2.2" - Average rainfall in April:
2.09" - Average rainfall in May:
2.6" - Average rainfall in June:
2.28"
- Average rainfall in July:
2.64" - Average rainfall in August:
3.31" - Average rainfall in September:
1.89" - Average rainfall in October:
2.2" - Average rainfall in November:
2.17" - Average rainfall in December:
2.05"
The wettest month (with the highest rainfall) is August (3.31").
The driest month (with the least rainfall) is February (1.61").
Average rainfall days
Downingtown, PA
- Average rainfall days in January:
6.7 days - Average rainfall days in February:
7.5 days - Average rainfall days in March:
12 days - Average rainfall days in April:
14.3 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
15.4 days
- Average rainfall days in July:
16.6 days - Average rainfall days in August:
15.4 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
11.6 days - Average rainfall days in November:
8.2 days - Average rainfall days in December:
8.6 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (6.7 days).
Average snowfall
Downingtown, PA
- Average snowfall in January:
2.32" - Average snowfall in February:
2.32" - Average snowfall in March:
3.46" - Average snowfall in April:
0.28" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is March (3.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Downingtown, PA
- Average snowfall days in January:
4.6 days - Average snowfall days in February:
4.8 days - Average snowfall days in March:
4.4 days - Average snowfall days in April:
0.5 days - Average snowfall days in May:
0.1 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:
0.1 days - Average snowfall days in November:
0.7 days - Average snowfall days in December:
2 days
The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Downingtown, 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:
4h and 42min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 18min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 42min - Average sunshine in October:
5h and 24min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Downingtown, PA
- Average sunshine days in January:
20.1 days - Average sunshine days in February:
16.7 days - Average sunshine days in March:
14.7 days - Average sunshine days in April:
14.3 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
12.5 days
- Average sunshine days in July:
12.9 days - Average sunshine days in August:
13.2 days - Average sunshine days in September:
16.3 days - Average sunshine days in October:
17.2 days - Average sunshine days in November:
19.9 days - Average sunshine days in December:
20.5 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (12.3 days).
Average UV index
Downingtown, 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, March, November and December (UV index 2).
Average cloud cover
Downingtown, PA
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility
Downingtown, PA
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
