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Current weather in Defiance is clear sky.

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This page shows hourly weather forecast for Defiance, including temperature, wind, precipitation, humidity and cloud cover.

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

Now · 5:11 AM

Defiance Weather & Hourly Forecast

United States · Pennsylvania · 16633

56°F

Clear night

Feels like: 55°F

💧 Humidity 94% 🌡 Pressure 30.15 inHg 💨 Wind 5 mph 👁 Visibility 13.9 mi ☁ Clouds 6% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Defiance

Today

6:00 AM

Clear night

55° 💧 None 💨 4 mph H 94%30.15 inHg

9:00 AM

Sunny

62° 💧 None 💨 4 mph H 76%30.21 inHg

12:00 PM

Sunny

71° 💧 None 💨 3 mph H 54%30.21 inHg

3:00 PM

Sunny

75° 💧 None 💨 2 mph H 46%30.15 inHg

6:00 PM

Sunny

73° 💧 None 💨 3 mph H 49%30.18 inHg

9:00 PM

Clear night

64° 💧 None 💨 3 mph H 70%30.21 inHg

Tomorrow

12:00 AM

Clear night

62° 💧 None 💨 2 mph H 67%30.24 inHg

3:00 AM

Overcast night

59° 💧 None 💨 1 mph H 76%30.24 inHg

6:00 AM

Mostly cloudy night

59° 💧 None 💨 2 mph H 76%30.27 inHg

9:00 AM

Partly cloudy

67° 💧 None 💨 2 mph H 61%30.27 inHg

12:00 PM

Mostly cloudy

77° 💧 None 💨 3 mph H 48%30.27 inHg

3:00 PM

Partly cloudy

81° 💧 None 💨 5 mph H 41%30.18 inHg

6:00 PM

Partly cloudy

80° 💧 None 💨 4 mph H 45%30.18 inHg

9:00 PM

Clear night

70° 💧 None 💨 1 mph H 71%30.24 inHg

Wednesday

12:00 AM

Mostly clear night

67° 💧 None 💨 3 mph H 75%30.21 inHg

3:00 AM

Mostly clear night

64° 💧 None 💨 5 mph H 78%30.21 inHg

Today

6:00 AM

Clear night

55° 💧 None 💨 4 mph H 94%30.15 inHg

7:00 AM

Sunny

55° 💧 None 💨 4 mph H 94%30.18 inHg

8:00 AM

Sunny

58° 💧 None 💨 3 mph H 87%30.18 inHg

9:00 AM

Sunny

62° 💧 None 💨 4 mph H 76%30.21 inHg

10:00 AM

Sunny

66° 💧 None 💨 3 mph H 67%30.21 inHg

11:00 AM

Sunny

69° 💧 None 💨 3 mph H 60%30.21 inHg

12:00 PM

Sunny

71° 💧 None 💨 3 mph H 54%30.21 inHg

1:00 PM

Sunny

73° 💧 None 💨 3 mph H 50%30.21 inHg

2:00 PM

Sunny

74° 💧 None 💨 2 mph H 47%30.18 inHg

3:00 PM

Sunny

75° 💧 None 💨 2 mph H 46%30.15 inHg

4:00 PM

Mostly sunny

75° 💧 None 💨 2 mph H 46%30.15 inHg

5:00 PM

Mostly sunny

75° 💧 None 💨 2 mph H 46%30.15 inHg

6:00 PM

Sunny

73° 💧 None 💨 3 mph H 49%30.18 inHg

7:00 PM

Sunny

69° 💧 None 💨 3 mph H 68%30.18 inHg

8:00 PM

Partly cloudy night

65° 💧 None 💨 3 mph H 70%30.18 inHg

9:00 PM

Clear night

64° 💧 None 💨 3 mph H 70%30.21 inHg

10:00 PM

Clear night

63° 💧 None 💨 2 mph H 67%30.24 inHg

11:00 PM

Clear night

63° 💧 None 💨 2 mph H 64%30.24 inHg

Tomorrow

12:00 AM

Clear night

62° 💧 None 💨 2 mph H 67%30.24 inHg

1:00 AM

Partly cloudy night

61° 💧 None 💨 2 mph H 71%30.24 inHg

2:00 AM

Mostly cloudy night

60° 💧 None 💨 2 mph H 75%30.24 inHg

3:00 AM

Overcast night

59° 💧 None 💨 1 mph H 76%30.24 inHg

4:00 AM

Overcast night

59° 💧 None 💨 1 mph H 76%30.24 inHg

5:00 AM

Mostly cloudy night

59° 💧 None 💨 2 mph H 77%30.24 inHg

6:00 AM

Mostly cloudy night

59° 💧 None 💨 2 mph H 76%30.27 inHg

7:00 AM

Mostly cloudy

59° 💧 None 💨 2 mph H 74%30.27 inHg

8:00 AM

Overcast

62° 💧 None 💨 3 mph H 68%30.27 inHg

9:00 AM

Partly cloudy

67° 💧 None 💨 2 mph H 61%30.27 inHg

10:00 AM

Sunny

71° 💧 None 💨 3 mph H 54%30.27 inHg

11:00 AM

Mostly sunny

74° 💧 None 💨 3 mph H 50%30.27 inHg

12:00 PM

Mostly cloudy

77° 💧 None 💨 3 mph H 48%30.27 inHg

1:00 PM

Mostly cloudy

79° 💧 None 💨 4 mph H 48%30.24 inHg

2:00 PM

Mostly cloudy

81° 💧 None 💨 5 mph H 44%30.21 inHg

3:00 PM

Partly cloudy

81° 💧 None 💨 5 mph H 41%30.18 inHg

4:00 PM

Partly cloudy

83° 💧 None 💨 6 mph H 38%30.18 inHg

5:00 PM

Mostly sunny

82° 💧 None 💨 6 mph H 39%30.18 inHg

6:00 PM

Partly cloudy

80° 💧 None 💨 4 mph H 45%30.18 inHg

7:00 PM

Partly cloudy

76° 💧 None 💨 2 mph H 59%30.18 inHg

8:00 PM

Clear night

72° 💧 None 💨 2 mph H 66%30.21 inHg

9:00 PM

Clear night

70° 💧 None 💨 1 mph H 71%30.24 inHg

10:00 PM

Clear night

69° 💧 None 💨 2 mph H 72%30.24 inHg

11:00 PM

Partly cloudy night

68° 💧 None 💨 2 mph H 72%30.21 inHg

Wednesday

12:00 AM

Mostly clear night

67° 💧 None 💨 3 mph H 75%30.21 inHg

1:00 AM

Mostly clear night

66° 💧 None 💨 3 mph H 78%30.21 inHg

2:00 AM

Mostly clear night

65° 💧 None 💨 4 mph H 78%30.21 inHg

3:00 AM

Mostly clear night

64° 💧 None 💨 5 mph H 78%30.21 inHg

4:00 AM

Partly cloudy night

63° 💧 None 💨 6 mph H 78%30.21 inHg

5:00 AM

Mostly cloudy night

62° 💧 None 💨 6 mph H 81%30.21 inHg

6:00 AM

Partly cloudy night

62° 💧 None 💨 6 mph H 82%30.21 inHg

7:00 AM

Partly cloudy

62° 💧 None 💨 6 mph H 84%30.21 inHg

8:00 AM

Mostly sunny

66° 💧 None 💨 6 mph H 76%30.21 inHg

9:00 AM

Mostly sunny

71° 💧 None 💨 5 mph H 68%30.21 inHg

10:00 AM

Mostly sunny

75° 💧 0.000 in 💨 6 mph H 55%30.21 inHg

11:00 AM

Mostly sunny

79° 💧 None 💨 7 mph H 48%30.18 inHg

12:00 PM

Sunny

82° 💧 0.000 in 💨 7 mph H 46%30.18 inHg

1:00 PM

Mostly cloudy

84° 💧 0.001 in 💨 8 mph H 44%30.15 inHg

2:00 PM

Light rain

84° 💧 0.012 in 💨 10 mph H 45%30.12 inHg

3:00 PM

Light rain

84° 💧 0.019 in 💨 10 mph H 48%30.09 inHg

4:00 PM

Mostly cloudy

84° 💧 0.003 in 💨 10 mph H 46%30.06 inHg

5:00 PM

Partly cloudy

84° 💧 0.001 in 💨 10 mph H 47%30.03 inHg

6:00 PM

Partly cloudy

82° 💧 0.002 in 💨 9 mph H 52%30.03 inHg

7:00 PM

Partly cloudy

80° 💧 None 💨 7 mph H 59%30.03 inHg

8:00 PM

Clear night

77° 💧 None 💨 7 mph H 64%30.03 inHg

11:00 PM

Clear night

74° 💧 None 💨 8 mph H 70%30.00 inHg

Thursday

2:00 AM

Clear night

72° 💧 None 💨 9 mph H 71%29.97 inHg

5:00 AM

Partly cloudy night

71° 💧 None 💨 7 mph H 74%29.97 inHg

8:00 AM

Moderate rain

68° 💧 None 💨 8 mph H 93%29.97 inHg

11:00 AM

Light rain

72° 💧 None 💨 8 mph H 93%29.97 inHg

2:00 PM

Moderate rain

71° 💧 None 💨 9 mph H 96%29.94 inHg

5:00 PM

Light rain

71° 💧 None 💨 6 mph H 97%29.88 inHg

8:00 PM

Overcast night

69° 💧 None 💨 5 mph H 98%29.88 inHg

11:00 PM

Overcast night

68° 💧 None 💨 6 mph H 98%29.91 inHg

Friday

2:00 AM

Mostly cloudy night

64° 💧 None 💨 6 mph H 96%29.94 inHg

5:00 AM

Clear night

59° 💧 None 💨 6 mph H 97%29.97 inHg

8:00 AM

Sunny

59° 💧 None 💨 6 mph H 93%30.03 inHg

11:00 AM

Sunny

66° 💧 None 💨 6 mph H 59%30.06 inHg

2:00 PM

Sunny

73° 💧 None 💨 7 mph H 38%30.00 inHg

5:00 PM

Sunny

72° 💧 None 💨 6 mph H 41%29.97 inHg

8:00 PM

Clear night

63° 💧 None 💨 3 mph H 65%30.00 inHg

11:00 PM

Clear night

61° 💧 None 💨 0 mph H 68%30.06 inHg

Saturday

2:00 AM

Clear night

57° 💧 None 💨 2 mph H 79%30.06 inHg

5:00 AM

Clear night

55° 💧 None 💨 1 mph H 86%30.06 inHg

8:00 AM

Mostly cloudy

57° 💧 None 💨 3 mph H 88%30.12 inHg

11:00 AM

Mostly cloudy

69° 💧 None 💨 8 mph H 52%30.09 inHg

2:00 PM

Partly cloudy

76° 💧 None 💨 9 mph H 51%30.06 inHg

5:00 PM

Mostly sunny

78° 💧 None 💨 8 mph H 53%30.00 inHg

8:00 PM

Mostly clear night

72° 💧 None 💨 7 mph H 69%30.03 inHg

Sunday

2:00 AM

Partly cloudy night

67° 💧 None 💨 6 mph H 90%30.06 inHg

8:00 AM

Mostly sunny

67° 💧 None 💨 5 mph H 95%30.09 inHg

2:00 PM

Mostly cloudy

82° 💧 None 💨 6 mph H 63%30.06 inHg

8:00 PM

Clear night

72° 💧 None 💨 3 mph H 92%30.06 inHg

Monday

2:00 AM

Overcast night

65° 💧 None 💨 5 mph H 94%30.12 inHg

8:00 AM

Partly cloudy

63° 💧 None 💨 5 mph H 86%30.18 inHg

2:00 PM

Overcast

77° 💧 None 💨 0 mph H 49%30.15 inHg

8:00 PM

Partly cloudy night

68° 💧 None 💨 3 mph H 74%30.12 inHg

Tuesday

2:00 AM

Partly cloudy night

65° 💧 None 💨 5 mph H 72%30.15 inHg

8:00 AM

Mostly sunny

67° 💧 None 💨 7 mph H 83%30.12 inHg

2:00 PM

Partly cloudy

86° 💧 None 💨 10 mph H 56%30.00 inHg

8:00 PM

Mostly cloudy night

72° 💧 None 💨 9 mph H 93%29.97 inHg

Wednesday

2:00 AM

Mostly clear night

62° 💧 None 💨 6 mph H 81%30.09 inHg

8:00 AM

Partly cloudy

57° 💧 None 💨 7 mph H 88%30.21 inHg

2:00 PM

Mostly sunny

69° 💧 None 💨 10 mph H 48%30.21 inHg

8:00 PM

Clear night

61° 💧 None 💨 4 mph H 64%30.21 inHg

Thursday

2:00 AM

Clear night

53° 💧 None 💨 4 mph H 82%30.27 inHg

8:00 AM

Mostly sunny

55° 💧 None 💨 3 mph H 81%30.30 inHg

2:00 PM

Mostly cloudy

70° 💧 None 💨 7 mph H 38%30.21 inHg

8:00 PM

Partly cloudy night

61° 💧 None 💨 4 mph H 68%30.18 inHg

Friday

2:00 AM

Mostly clear night

54° 💧 None 💨 2 mph H 85%30.18 inHg

8:00 AM

Sunny

55° 💧 None 💨 4 mph H 84%30.15 inHg

2:00 PM

Sunny

71° 💧 None 💨 12 mph H 39%30.06 inHg

8:00 PM

Clear night

62° 💧 None 💨 7 mph H 56%30.03 inHg

Saturday

2:00 AM

Clear night

55° 💧 None 💨 6 mph H 72%30.03 inHg

8:00 AM

Sunny

54° 💧 None 💨 4 mph H 78%30.06 inHg

2:00 PM

Overcast

66° 💧 None 💨 12 mph H 43%30.03 inHg

8:00 PM

Mostly clear night

58° 💧 None 💨 4 mph H 60%30.09 inHg

Sunday

2:00 AM

Clear night

51° 💧 None 💨 0 mph H 72%30.15 inHg

8:00 AM

Sunny

51° 💧 None 💨 5 mph H 70%30.21 inHg

2:00 PM

Mostly cloudy

71° 💧 None 💨 8 mph H 33%30.12 inHg

8:00 PM

Partly cloudy night

62° 💧 None 💨 5 mph H 54%30.06 inHg

Monday

2:00 AM

Overcast night

58° 💧 None 💨 4 mph H 62%30.06 inHg

8:00 AM

Overcast

57° 💧 None 💨 3 mph H 77%30.06 inHg

2:00 PM

Overcast

76° 💧 None 💨 5 mph H 35%30.00 inHg

8:00 PM

Overcast night

68° 💧 None 💨 3 mph H 52%30.00 inHg

In Defiance and, more broadly, across the state of Pennsylvania: This evening will feature a mix of sun and clouds, with temperatures remaining mild between 67 and 73 degrees Fahrenheit. Winds will be light, coming from the north at around 5 mph, with gusts reaching up to 7 mph. No precipitation is expected during the next few hours, so it should remain dry. Conditions are calm, making for a pleasant evening. Temperatures are expected to stay steady through the night, providing comfortable conditions for outdoor activities or relaxation. Overall, it looks like a mild and quiet evening with no significant weather changes expected.

15-Day Weather Outlook for Defiance

TomorrowTomorrow

Partly cloudy 83°/59° 💧 None 💨 6 mph

Wednesday, Sep 9Wed Sep 9

Partly cloudy 84°/62° 💧 None 💨 10 mph

Thursday, Sep 10Thu Sep 10

Moderate rain 77°/71° 💧 0.600 in 💨 9 mph

Friday, Sep 11Fri Sep 11

Mostly cloudy 73°/59° 💧 0.076 in 💨 6 mph

Saturday, Sep 12Sat Sep 12

Overcast 77°/60° 💧 0.001 in 💨 10 mph

Sunday, Sep 13Sun Sep 13

Mostly sunny 78°/65° 💧 0.017 in 💨 8 mph

Monday, Sep 14Mon Sep 14

Mostly sunny 84°/67° 💧 None 💨 5 mph

Tuesday, Sep 15Tue Sep 15

Partly cloudy 85°/68° 💧 0.010 in 💨 4 mph

Wednesday, Sep 16Wed Sep 16

Sunny 89°/72° 💧 0.001 in 💨 10 mph

Thursday, Sep 17Thu Sep 17

Moderate rain 82°/58° 💧 0.056 in 💨 7 mph

Friday, Sep 18Fri Sep 18

Mostly sunny 76°/58° 💧 None 💨 7 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 73°/47° 💧 0.005 in 💨 14 mph

Sunday, Sep 20Sun Sep 20

Overcast 57°/45° 💧 None 💨 15 mph

Monday, Sep 21Mon Sep 21

Sunny 62°/46° 💧 None 💨 6 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Defiance

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Defiance

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 6:00 AM

PM2.5 Fine particles Good 2,0µg/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 4,8µg/m³

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

O₃ Ozone Good 25,3µg/m³

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

NO₂ Nitrogen dioxide Good 2,0µg/m³

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

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Defiance

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 7,0High 😊Good

Tomorrow UV 6,5High 🙂Fair

Wednesday UV 7,3High 🙂Fair

Thursday UV 1,5Low 🙂Fair

Friday UV 6,0High 😊Good

Saturday UV 6,0High —Unavailable

Sunday UV 7,0High —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,4 9:00 AMUV 1,3 10:00 AMUV 2,8 11:00 AMUV 4,6 12:00 PMUV 6,2 1:00 PMUV 7,0 2:00 PMUV 6,6 3:00 PMUV 5,3 4:00 PMUV 3,5 5:00 PMUV 1,8 6:00 PMUV 0,7

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.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

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 Defiance

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · DEFIANCE, PENNSYLVANIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 8:00 AM–9:00 AM.

96/100Best-hour score

BEST TIME TONIGHT 8:00 AM–9:00 AM Astronomical darkness: 9:10 PM–5:12 AM

☁ Cloud cover 1% Real hourly forecast for the best viewing hour.

☾ Moonlight 20% Waning Crescent · Moon about 57° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 59° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min75%

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 Defiance were last refreshed today at 5:11 AM. The current forecast period extends through 09/09/2026 at 3:00 AM. 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.