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Current weather in Downingtown is clear sky.

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Is the weather forecast for Downingtown updated regularly?

Weather data for Downingtown is updated regularly with the latest available observations and forecasts.

Now · 4:08 PM

Downingtown Weather & Hourly Forecast

United States · Pennsylvania · 19335

78°F

Sunny

Feels like: 75°F

💧 Humidity 32% 🌡 Pressure 30.15 inHg 💨 Wind 5 mph 👁 Visibility 29.1 mi ☁ Clouds 0% ☀️ UV index 3.1 · Moderate 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Downingtown

Today

5:00 PM

Sunny

78° 💧 None 💨 5 mph H 32%30.15 inHg

8:00 PM

Mostly cloudy night

69° 💧 None 💨 4 mph H 53%30.18 inHg

11:00 PM

Partly cloudy night

65° 💧 None 💨 1 mph H 60%30.21 inHg

Tomorrow

2:00 AM

Clear night

63° 💧 None 💨 3 mph H 58%30.24 inHg

5:00 AM

Clear night

60° 💧 None 💨 3 mph H 67%30.24 inHg

8:00 AM

Mostly cloudy

64° 💧 None 💨 4 mph H 65%30.27 inHg

11:00 AM

Partly cloudy

78° 💧 None 💨 3 mph H 37%30.27 inHg

2:00 PM

Overcast

84° 💧 None 💨 3 mph H 32%30.21 inHg

5:00 PM

Partly cloudy

84° 💧 None 💨 4 mph H 30%30.18 inHg

8:00 PM

Overcast night

75° 💧 None 💨 4 mph H 51%30.21 inHg

11:00 PM

Partly cloudy night

71° 💧 None 💨 5 mph H 68%30.24 inHg

Wednesday

2:00 AM

Partly cloudy night

69° 💧 None 💨 8 mph H 72%30.24 inHg

5:00 AM

Mostly clear night

68° 💧 None 💨 8 mph H 85%30.21 inHg

8:00 AM

Mostly cloudy

70° 💧 None 💨 7 mph H 70%30.21 inHg

11:00 AM

Sunny

82° 💧 None 💨 11 mph H 44%30.21 inHg

2:00 PM

Mostly sunny

88° 💧 None 💨 15 mph H 33%30.12 inHg

Today

5:00 PM

Sunny

78° 💧 None 💨 5 mph H 32%30.15 inHg

6:00 PM

Sunny

76° 💧 None 💨 5 mph H 34%30.15 inHg

7:00 PM

Partly cloudy

73° 💧 None 💨 5 mph H 43%30.18 inHg

8:00 PM

Mostly cloudy night

69° 💧 None 💨 4 mph H 53%30.18 inHg

9:00 PM

Overcast night

67° 💧 None 💨 4 mph H 58%30.18 inHg

10:00 PM

Mostly clear night

66° 💧 None 💨 3 mph H 58%30.21 inHg

11:00 PM

Partly cloudy night

65° 💧 None 💨 1 mph H 60%30.21 inHg

Tomorrow

12:00 AM

Mostly clear night

64° 💧 None 💨 2 mph H 60%30.21 inHg

1:00 AM

Clear night

63° 💧 None 💨 2 mph H 59%30.24 inHg

2:00 AM

Clear night

63° 💧 None 💨 3 mph H 58%30.24 inHg

3:00 AM

Clear night

62° 💧 None 💨 2 mph H 60%30.21 inHg

4:00 AM

Clear night

61° 💧 None 💨 2 mph H 63%30.24 inHg

5:00 AM

Clear night

60° 💧 None 💨 3 mph H 67%30.24 inHg

6:00 AM

Mostly clear night

58° 💧 None 💨 3 mph H 72%30.24 inHg

7:00 AM

Mostly sunny

58° 💧 None 💨 3 mph H 75%30.27 inHg

8:00 AM

Mostly cloudy

64° 💧 None 💨 4 mph H 65%30.27 inHg

9:00 AM

Partly cloudy

71° 💧 None 💨 3 mph H 52%30.27 inHg

10:00 AM

Partly cloudy

75° 💧 None 💨 3 mph H 43%30.27 inHg

11:00 AM

Partly cloudy

78° 💧 None 💨 3 mph H 37%30.27 inHg

12:00 PM

Mostly cloudy

81° 💧 None 💨 3 mph H 34%30.24 inHg

1:00 PM

Mostly cloudy

82° 💧 None 💨 3 mph H 33%30.24 inHg

2:00 PM

Overcast

84° 💧 None 💨 3 mph H 32%30.21 inHg

3:00 PM

Mostly sunny

84° 💧 None 💨 4 mph H 31%30.21 inHg

4:00 PM

Mostly sunny

84° 💧 None 💨 4 mph H 30%30.21 inHg

5:00 PM

Partly cloudy

84° 💧 None 💨 4 mph H 30%30.18 inHg

6:00 PM

Mostly cloudy

83° 💧 None 💨 3 mph H 32%30.21 inHg

7:00 PM

Mostly cloudy

79° 💧 None 💨 3 mph H 41%30.21 inHg

8:00 PM

Overcast night

75° 💧 None 💨 4 mph H 51%30.21 inHg

9:00 PM

Overcast night

73° 💧 None 💨 3 mph H 56%30.21 inHg

10:00 PM

Mostly cloudy night

73° 💧 None 💨 5 mph H 62%30.24 inHg

11:00 PM

Partly cloudy night

71° 💧 None 💨 5 mph H 68%30.24 inHg

Wednesday

12:00 AM

Partly cloudy night

70° 💧 None 💨 7 mph H 70%30.24 inHg

1:00 AM

Mostly clear night

70° 💧 None 💨 7 mph H 69%30.24 inHg

2:00 AM

Partly cloudy night

69° 💧 None 💨 8 mph H 72%30.24 inHg

3:00 AM

Overcast night

68° 💧 None 💨 7 mph H 78%30.21 inHg

4:00 AM

Mostly cloudy night

68° 💧 None 💨 7 mph H 83%30.21 inHg

5:00 AM

Mostly clear night

68° 💧 None 💨 8 mph H 85%30.21 inHg

6:00 AM

Mostly clear night

67° 💧 None 💨 8 mph H 84%30.21 inHg

7:00 AM

Mostly sunny

67° 💧 None 💨 7 mph H 81%30.21 inHg

8:00 AM

Mostly cloudy

70° 💧 None 💨 7 mph H 70%30.21 inHg

9:00 AM

Mostly cloudy

75° 💧 None 💨 9 mph H 58%30.21 inHg

10:00 AM

Mostly cloudy

79° 💧 None 💨 9 mph H 50%30.21 inHg

11:00 AM

Sunny

82° 💧 None 💨 11 mph H 44%30.21 inHg

12:00 PM

Mostly sunny

85° 💧 None 💨 12 mph H 39%30.18 inHg

1:00 PM

Mostly sunny

87° 💧 None 💨 15 mph H 35%30.15 inHg

2:00 PM

Mostly sunny

88° 💧 None 💨 15 mph H 33%30.12 inHg

3:00 PM

Mostly cloudy

88° 💧 None 💨 15 mph H 33%30.09 inHg

4:00 PM

Mostly sunny

86° 💧 None 💨 14 mph H 35%30.06 inHg

5:00 PM

Mostly sunny

86° 💧 None 💨 15 mph H 37%30.06 inHg

6:00 PM

Sunny

84° 💧 None 💨 14 mph H 42%30.03 inHg

7:00 PM

Sunny

81° 💧 None 💨 13 mph H 47%30.03 inHg

8:00 PM

Clear night

79° 💧 None 💨 12 mph H 54%30.03 inHg

9:00 PM

Clear night

77° 💧 None 💨 13 mph H 60%30.03 inHg

10:00 PM

Clear night

76° 💧 None 💨 13 mph H 62%30.03 inHg

11:00 PM

Clear night

75° 💧 None 💨 13 mph H 64%30.03 inHg

Thursday

12:00 AM

Clear night

75° 💧 None 💨 13 mph H 66%30.00 inHg

1:00 AM

Clear night

75° 💧 None 💨 13 mph H 66%30.00 inHg

2:00 AM

Clear night

74° 💧 None 💨 13 mph H 67%29.97 inHg

3:00 AM

Clear night

74° 💧 None 💨 12 mph H 68%29.94 inHg

4:00 AM

Clear night

73° 💧 None 💨 11 mph H 68%29.94 inHg

5:00 AM

Clear night

72° 💧 None 💨 11 mph H 68%29.94 inHg

6:00 AM

Clear night

72° 💧 None 💨 10 mph H 67%29.94 inHg

7:00 AM

Mostly sunny

72° 💧 None 💨 10 mph H 66%29.94 inHg

8:00 AM

Mostly sunny

74° 💧 None 💨 9 mph H 60%29.97 inHg

11:00 AM

Partly cloudy

84° 💧 None 💨 12 mph H 50%29.94 inHg

2:00 PM

Mostly cloudy

82° 💧 None 💨 13 mph H 63%29.88 inHg

5:00 PM

Partly cloudy

82° 💧 None 💨 11 mph H 63%29.83 inHg

8:00 PM

Moderate rain

74° 💧 None 💨 7 mph H 92%29.83 inHg

11:00 PM

Overcast night

72° 💧 None 💨 6 mph H 98%29.85 inHg

Friday

2:00 AM

Mostly cloudy night

71° 💧 None 💨 8 mph H 96%29.85 inHg

5:00 AM

Mostly clear night

66° 💧 None 💨 7 mph H 96%29.91 inHg

8:00 AM

Partly cloudy

65° 💧 None 💨 7 mph H 87%29.97 inHg

11:00 AM

Sunny

74° 💧 None 💨 8 mph H 54%30.00 inHg

2:00 PM

Sunny

81° 💧 None 💨 7 mph H 39%29.97 inHg

5:00 PM

Sunny

80° 💧 None 💨 7 mph H 38%29.97 inHg

8:00 PM

Clear night

72° 💧 None 💨 6 mph H 55%30.00 inHg

11:00 PM

Clear night

67° 💧 None 💨 4 mph H 63%30.06 inHg

Saturday

2:00 AM

Clear night

64° 💧 None 💨 4 mph H 72%30.09 inHg

5:00 AM

Clear night

62° 💧 None 💨 3 mph H 78%30.09 inHg

8:00 AM

Mostly sunny

66° 💧 None 💨 4 mph H 79%30.12 inHg

11:00 AM

Mostly sunny

78° 💧 None 💨 7 mph H 55%30.12 inHg

2:00 PM

Overcast

83° 💧 None 💨 10 mph H 45%30.09 inHg

5:00 PM

Overcast

79° 💧 None 💨 11 mph H 52%30.09 inHg

8:00 PM

Partly cloudy night

73° 💧 None 💨 11 mph H 65%30.09 inHg

11:00 PM

Partly cloudy night

69° 💧 None 💨 8 mph H 76%30.12 inHg

Sunday

2:00 AM

Moderate rain

66° 💧 None 💨 6 mph H 95%30.12 inHg

5:00 AM

Light rain

66° 💧 None 💨 5 mph H 98%30.09 inHg

8:00 AM

Moderate rain

67° 💧 None 💨 4 mph H 98%30.12 inHg

2:00 PM

Overcast

77° 💧 None 💨 2 mph H 80%30.12 inHg

8:00 PM

Partly cloudy night

74° 💧 None 💨 5 mph H 90%30.12 inHg

Monday

2:00 AM

Overcast night

69° 💧 None 💨 2 mph H 100%30.15 inHg

8:00 AM

Overcast

70° 💧 None 💨 3 mph H 99%30.18 inHg

2:00 PM

Mostly cloudy

80° 💧 None 💨 4 mph H 67%30.18 inHg

8:00 PM

Mostly clear night

74° 💧 None 💨 6 mph H 85%30.15 inHg

Tuesday

2:00 AM

Overcast night

70° 💧 None 💨 5 mph H 100%30.21 inHg

8:00 AM

Overcast

70° 💧 None 💨 5 mph H 97%30.21 inHg

2:00 PM

Light rain

82° 💧 None 💨 8 mph H 69%30.15 inHg

8:00 PM

Partly cloudy night

76° 💧 None 💨 8 mph H 87%30.15 inHg

Wednesday

2:00 AM

Partly cloudy night

72° 💧 None 💨 8 mph H 98%30.12 inHg

8:00 AM

Mostly cloudy

72° 💧 None 💨 7 mph H 99%30.15 inHg

2:00 PM

Moderate rain

77° 💧 None 💨 7 mph H 89%30.12 inHg

8:00 PM

Mostly cloudy night

68° 💧 None 💨 6 mph H 97%30.15 inHg

Thursday

2:00 AM

Clear night

60° 💧 None 💨 10 mph H 88%30.21 inHg

8:00 AM

Sunny

59° 💧 None 💨 9 mph H 84%30.27 inHg

2:00 PM

Sunny

72° 💧 None 💨 8 mph H 55%30.27 inHg

8:00 PM

Clear night

65° 💧 None 💨 1 mph H 70%30.24 inHg

Friday

2:00 AM

Mostly cloudy night

59° 💧 None 💨 4 mph H 87%30.21 inHg

8:00 AM

Mostly cloudy

61° 💧 None 💨 6 mph H 88%30.18 inHg

2:00 PM

Overcast

73° 💧 None 💨 7 mph H 57%30.09 inHg

8:00 PM

Partly cloudy night

66° 💧 None 💨 4 mph H 84%30.00 inHg

Saturday

2:00 AM

Partly cloudy night

62° 💧 None 💨 6 mph H 90%29.97 inHg

8:00 AM

Mostly cloudy

64° 💧 None 💨 7 mph H 79%29.97 inHg

2:00 PM

Overcast

73° 💧 None 💨 9 mph H 60%29.94 inHg

8:00 PM

Partly cloudy night

63° 💧 None 💨 5 mph H 74%29.97 inHg

Sunday

2:00 AM

Overcast night

58° 💧 None 💨 8 mph H 70%30.03 inHg

8:00 AM

Mostly cloudy

55° 💧 None 💨 6 mph H 73%30.06 inHg

2:00 PM

Partly cloudy

69° 💧 None 💨 2 mph H 56%30.03 inHg

8:00 PM

Clear night

63° 💧 None 💨 1 mph H 80%30.03 inHg

Monday

2:00 AM

Clear night

59° 💧 None 💨 4 mph H 95%30.03 inHg

8:00 AM

Mostly sunny

63° 💧 None 💨 4 mph H 96%30.06 inHg

2:00 PM

Sunny

76° 💧 None 💨 5 mph H 46%30.06 inHg

8:00 PM

Partly cloudy night

67° 💧 None 💨 6 mph H 64%30.09 inHg

Tuesday

2:00 AM

Mostly cloudy night

61° 💧 None 💨 9 mph H 71%30.15 inHg

8:00 AM

Overcast

60° 💧 None 💨 8 mph H 81%30.21 inHg

In Downingtown and, more broadly, across the state of Pennsylvania: As the afternoon winds down, skies will remain mostly sunny with a few passing clouds. Temperatures will be mild to warm, ranging from 61 to 75 degrees Fahrenheit. Light northeast winds, generally around 3 mph, may occasionally gust to 3 mph, creating a gentle breeze. No precipitation is expected through the evening, providing clear conditions for outdoor plans. Temperatures are expected to stay steady or slightly decrease during the evening hours, remaining comfortable and dry. Overall, the weather will be calm and pleasant as the day transitions into night.

15-Day Weather Outlook for Downingtown

TomorrowTomorrow

Mostly cloudy 84°/58° 💧 None 💨 4 mph

Wednesday, Sep 9Wed Sep 9

Overcast 88°/67° 💧 None 💨 15 mph

Thursday, Sep 10Thu Sep 10

Mostly cloudy 84°/72° 💧 0.037 in 💨 13 mph

Friday, Sep 11Fri Sep 11

Moderate rain 81°/65° 💧 0.115 in 💨 8 mph

Saturday, Sep 12Sat Sep 12

Mostly sunny 83°/62° 💧 None 💨 11 mph

Sunday, Sep 13Sun Sep 13

Moderate rain 77°/66° 💧 0.808 in 💨 11 mph

Monday, Sep 14Mon Sep 14

Overcast 80°/69° 💧 0.024 in 💨 5 mph

Tuesday, Sep 15Tue Sep 15

Light rain 82°/70° 💧 0.023 in 💨 8 mph

Wednesday, Sep 16Wed Sep 16

Moderate rain 77°/72° 💧 0.433 in 💨 8 mph

Thursday, Sep 17Thu Sep 17

Mostly cloudy 72°/59° 💧 0.624 in 💨 10 mph

Friday, Sep 18Fri Sep 18

Mostly cloudy 73°/59° 💧 None 💨 7 mph

Saturday, Sep 19Sat Sep 19

Partly cloudy 73°/62° 💧 None 💨 9 mph

Sunday, Sep 20Sun Sep 20

Partly cloudy 69°/55° 💧 None 💨 8 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 76°/59° 💧 0.001 in 💨 5 mph

Tuesday, Sep 22Tue Sep 22

Partly cloudy 67°/60° 💧 None 💨 9 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Downingtown

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Downingtown

Hourly forecast · Updated every 2 hours

Moderate

Nearest forecast value 5:00 PM

PM2.5 Fine particles Good 9,2µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 10,1µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Moderate 121,3µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 3,2µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Sensitive people should reduce strenuous and prolonged outdoor exertion.

UV & HEALTH

UV, Sun & Health Outlook in Downingtown

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 6,7High 😐Moderate

Tomorrow UV 6,4High 😐Moderate

Wednesday UV 6,8High 😐Moderate

Thursday UV 1,3Low 😐Moderate

Friday UV 6,0High 😐Moderate

Saturday UV 6,0High —Unavailable

Sunday UV 6,0High —Unavailable

Hourly UV index today

5:00 PMUV 1,5 6:00 PMUV 0,5 7:00 PMUV 0,0

Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Caution for sensitive people

People with respiratory or cardiovascular conditions should reduce prolonged outdoor exertion.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Downingtown

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · DOWNINGTOWN, PENNSYLVANIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 3:00 AM–4:00 AM.

100/100Best-hour score

BEST TIME TONIGHT 3:00 AM–4:00 AM Astronomical darkness: 8:58 PM–5:04 AM

☁ Cloud cover 0% Real hourly forecast for the best viewing hour.

☾ Moonlight 14% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 66° high at the best hour.

✦ Estimated visible meteors 2–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min78%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Downingtown were last refreshed today at 4:08 PM. The current forecast period extends through 09/09/2026 at 2:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.