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Current weather in Chambersburg is clear sky.

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

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

Now · 10:23 AM

Chambersburg Weather & Hourly Forecast

United States · Pennsylvania · 17201

76°F

Sunny

Feels like: 77°F

💧 Humidity 79% 🌡 Pressure 30.03 inHg 💨 Wind 6 mph 👁 Visibility 6.2 mi ☁ Clouds 0% ☀️ UV index 6.0 · High 🌅 Sunrise 6:34 AM 🌇 Sunset 7:49 PM

Hourly Forecast for Chambersburg

Today

11:00 AM

Sunny

76° 💧 None 💨 6 mph H 79%30.03 inHg

2:00 PM

Mostly sunny

79° 💧 None 💨 6 mph H 57%30.03 inHg

5:00 PM

Overcast

78° 💧 None 💨 5 mph H 60%30.03 inHg

8:00 PM

Overcast night

75° 💧 None 💨 6 mph H 64%30.06 inHg

11:00 PM

Mostly clear night

67° 💧 None 💨 4 mph H 82%30.12 inHg

Tomorrow

2:00 AM

Clear night

69° 💧 None 💨 6 mph H 87%30.18 inHg

5:00 AM

Clear night

66° 💧 None 💨 5 mph H 91%30.18 inHg

8:00 AM

Sunny

67° 💧 None 💨 4 mph H 71%30.24 inHg

11:00 AM

Sunny

76° 💧 None 💨 2 mph H 48%30.24 inHg

2:00 PM

Sunny

80° 💧 None 💨 5 mph H 44%30.18 inHg

5:00 PM

Mostly sunny

83° 💧 None 💨 6 mph H 38%30.12 inHg

8:00 PM

Partly cloudy night

76° 💧 None 💨 6 mph H 60%30.12 inHg

11:00 PM

Mostly cloudy night

70° 💧 None 💨 4 mph H 78%30.15 inHg

Sunday

2:00 AM

Mostly cloudy night

69° 💧 None 💨 4 mph H 87%30.15 inHg

5:00 AM

Mostly cloudy night

65° 💧 None 💨 5 mph H 97%30.15 inHg

8:00 AM

Mostly cloudy

68° 💧 None 💨 5 mph H 90%30.18 inHg

Today

11:00 AM

Sunny

76° 💧 None 💨 6 mph H 79%30.03 inHg

12:00 PM

Sunny

77° 💧 None 💨 7 mph H 74%30.03 inHg

1:00 PM

Sunny

78° 💧 None 💨 7 mph H 67%30.03 inHg

2:00 PM

Mostly sunny

79° 💧 None 💨 6 mph H 57%30.03 inHg

3:00 PM

Mostly cloudy

80° 💧 None 💨 8 mph H 49%30.00 inHg

4:00 PM

Overcast

78° 💧 None 💨 7 mph H 56%30.03 inHg

5:00 PM

Overcast

78° 💧 None 💨 5 mph H 60%30.03 inHg

6:00 PM

Overcast

82° 💧 None 💨 5 mph H 61%30.03 inHg

7:00 PM

Overcast

78° 💧 None 💨 5 mph H 62%30.06 inHg

8:00 PM

Overcast night

75° 💧 None 💨 6 mph H 64%30.06 inHg

9:00 PM

Partly cloudy night

72° 💧 None 💨 7 mph H 69%30.09 inHg

10:00 PM

Mostly clear night

70° 💧 None 💨 4 mph H 79%30.09 inHg

11:00 PM

Mostly clear night

67° 💧 None 💨 4 mph H 82%30.12 inHg

Tomorrow

12:00 AM

Mostly clear night

66° 💧 None 💨 4 mph H 84%30.15 inHg

1:00 AM

Clear night

66° 💧 None 💨 5 mph H 85%30.15 inHg

2:00 AM

Clear night

69° 💧 None 💨 6 mph H 87%30.18 inHg

3:00 AM

Clear night

68° 💧 None 💨 7 mph H 89%30.18 inHg

4:00 AM

Clear night

67° 💧 None 💨 6 mph H 91%30.18 inHg

5:00 AM

Clear night

66° 💧 None 💨 5 mph H 91%30.18 inHg

6:00 AM

Clear night

65° 💧 None 💨 5 mph H 88%30.21 inHg

7:00 AM

Sunny

65° 💧 None 💨 5 mph H 84%30.21 inHg

8:00 AM

Sunny

67° 💧 None 💨 4 mph H 71%30.24 inHg

9:00 AM

Sunny

70° 💧 None 💨 4 mph H 58%30.24 inHg

10:00 AM

Sunny

73° 💧 None 💨 3 mph H 52%30.24 inHg

11:00 AM

Sunny

76° 💧 None 💨 2 mph H 48%30.24 inHg

12:00 PM

Sunny

78° 💧 None 💨 3 mph H 47%30.21 inHg

1:00 PM

Sunny

79° 💧 None 💨 4 mph H 45%30.18 inHg

2:00 PM

Sunny

80° 💧 None 💨 5 mph H 44%30.18 inHg

3:00 PM

Sunny

82° 💧 None 💨 5 mph H 42%30.15 inHg

4:00 PM

Sunny

82° 💧 None 💨 5 mph H 39%30.12 inHg

5:00 PM

Mostly sunny

83° 💧 None 💨 6 mph H 38%30.12 inHg

6:00 PM

Mostly sunny

87° 💧 None 💨 8 mph H 44%30.12 inHg

7:00 PM

Mostly sunny

79° 💧 None 💨 10 mph H 57%30.12 inHg

8:00 PM

Partly cloudy night

76° 💧 None 💨 6 mph H 60%30.12 inHg

9:00 PM

Mostly cloudy night

73° 💧 None 💨 5 mph H 70%30.15 inHg

10:00 PM

Mostly cloudy night

71° 💧 None 💨 5 mph H 73%30.15 inHg

11:00 PM

Mostly cloudy night

70° 💧 None 💨 4 mph H 78%30.15 inHg

Sunday

12:00 AM

Overcast night

69° 💧 None 💨 3 mph H 80%30.15 inHg

1:00 AM

Mostly cloudy night

68° 💧 None 💨 5 mph H 85%30.15 inHg

2:00 AM

Mostly cloudy night

69° 💧 None 💨 4 mph H 87%30.15 inHg

3:00 AM

Overcast night

65° 💧 None 💨 4 mph H 89%30.15 inHg

4:00 AM

Overcast night

65° 💧 None 💨 4 mph H 94%30.15 inHg

5:00 AM

Mostly cloudy night

65° 💧 None 💨 5 mph H 97%30.15 inHg

6:00 AM

Mostly cloudy night

65° 💧 None 💨 5 mph H 98%30.15 inHg

7:00 AM

Mostly cloudy

65° 💧 None 💨 5 mph H 98%30.15 inHg

8:00 AM

Mostly cloudy

68° 💧 None 💨 5 mph H 90%30.18 inHg

9:00 AM

Partly cloudy

73° 💧 None 💨 7 mph H 76%30.15 inHg

10:00 AM

Partly cloudy

77° 💧 None 💨 8 mph H 66%30.15 inHg

11:00 AM

Mostly cloudy

82° 💧 None 💨 9 mph H 57%30.12 inHg

12:00 PM

Mostly cloudy

86° 💧 None 💨 9 mph H 50%30.12 inHg

1:00 PM

Partly cloudy

89° 💧 None 💨 9 mph H 44%30.09 inHg

2:00 PM

Partly cloudy

91° 💧 None 💨 7 mph H 36%30.06 inHg

3:00 PM

Mostly cloudy

93° 💧 None 💨 7 mph H 31%30.03 inHg

4:00 PM

Mostly cloudy

89° 💧 None 💨 8 mph H 38%30.03 inHg

5:00 PM

Mostly cloudy

85° 💧 None 💨 6 mph H 44%30.00 inHg

6:00 PM

Overcast

87° 💧 None 💨 6 mph H 42%30.03 inHg

7:00 PM

Overcast

82° 💧 None 💨 4 mph H 53%30.03 inHg

8:00 PM

Overcast night

79° 💧 None 💨 2 mph H 55%30.03 inHg

9:00 PM

Overcast night

79° 💧 None 💨 2 mph H 53%30.06 inHg

10:00 PM

Overcast night

78° 💧 None 💨 7 mph H 55%30.06 inHg

11:00 PM

Overcast night

76° 💧 None 💨 7 mph H 58%30.06 inHg

Monday

12:00 AM

Overcast night

74° 💧 None 💨 6 mph H 60%30.06 inHg

1:00 AM

Overcast night

73° 💧 None 💨 5 mph H 60%30.06 inHg

2:00 AM

Overcast night

72° 💧 None 💨 5 mph H 61%30.06 inHg

3:00 AM

Overcast night

69° 💧 None 💨 5 mph H 66%30.06 inHg

4:00 AM

Overcast night

70° 💧 None 💨 5 mph H 65%30.06 inHg

5:00 AM

Overcast night

70° 💧 None 💨 5 mph H 67%30.06 inHg

6:00 AM

Overcast night

68° 💧 None 💨 4 mph H 72%30.06 inHg

7:00 AM

Overcast

69° 💧 None 💨 6 mph H 73%30.09 inHg

8:00 AM

Overcast

69° 💧 None 💨 1 mph H 76%30.09 inHg

9:00 AM

Overcast

71° 💧 None 💨 3 mph H 74%30.09 inHg

10:00 AM

Overcast

72° 💧 None 💨 5 mph H 73%30.09 inHg

11:00 AM

Overcast

81° 💧 None 💨 4 mph H 56%30.12 inHg

12:00 PM

Overcast

83° 💧 None 💨 1 mph H 53%30.09 inHg

1:00 PM

Overcast

86° 💧 None 💨 3 mph H 48%30.09 inHg

2:00 PM

Mostly cloudy

91° 💧 None 💨 2 mph H 42%30.06 inHg

3:00 PM

Mostly cloudy

93° 💧 None 💨 0 mph H 37%30.03 inHg

4:00 PM

Mostly cloudy

89° 💧 None 💨 5 mph H 43%30.00 inHg

5:00 PM

Overcast

85° 💧 None 💨 7 mph H 49%30.00 inHg

6:00 PM

Overcast

81° 💧 None 💨 5 mph H 63%30.00 inHg

7:00 PM

Overcast

79° 💧 None 💨 5 mph H 69%30.03 inHg

8:00 PM

Light rain

74° 💧 0.02 in 💨 5 mph H 83%30.03 inHg

9:00 PM

Light rain

73° 💧 0.03 in 💨 4 mph H 89%30.03 inHg

10:00 PM

Light rain

72° 💧 0.02 in 💨 6 mph H 92%30.06 inHg

11:00 PM

Light rain

71° 💧 0.03 in 💨 7 mph H 95%30.06 inHg

Tuesday

12:00 AM

Light rain

71° 💧 0.01 in 💨 4 mph H 95%30.06 inHg

1:00 AM

Light rain

71° 💧 0.02 in 💨 2 mph H 95%30.06 inHg

2:00 AM

Light rain

70° 💧 0.01 in 💨 3 mph H 96%30.06 inHg

3:00 AM

Light rain

70° 💧 0.02 in 💨 2 mph H 96%30.06 inHg

4:00 AM

Light rain

70° 💧 0.02 in 💨 2 mph H 96%30.06 inHg

5:00 AM

Light rain

69° 💧 0.02 in 💨 2 mph H 97%30.06 inHg

6:00 AM

Moderate rain

69° 💧 0.05 in 💨 1 mph H 98%30.03 inHg

7:00 AM

Light rain

70° 💧 0.02 in 💨 6 mph H 98%30.03 inHg

8:00 AM

Light rain

71° 💧 0.02 in 💨 5 mph H 96%30.06 inHg

9:00 AM

Light rain

71° 💧 0.01 in 💨 5 mph H 96%30.06 inHg

10:00 AM

Light rain

76° 💧 0.00 in 💨 8 mph H 85%30.06 inHg

In Chambersburg and, more broadly, across the state of Pennsylvania: The rest of the day will be mostly sunny with a few clouds drifting through the sky. Temperatures will range from the mid-60s to the mid-70s, creating a comfortable and mild to warm afternoon. A slight chance of rain exists, with possible accumulations around 0.01 inches, and the likelihood of rain remains low at about 20 percent. Winds will be gentle, coming from the north at up to 5 mph, with occasional gusts reaching 14 mph. Overall, expect pleasant weather with plenty of sunshine and mild breezes, making for a good afternoon outdoors.

15-Day Weather Outlook for Chambersburg

TomorrowTomorrow

Sunny 87°/65° 💧 None 💨 10 mph

Sunday, Aug 30Sun Aug 30

Partly cloudy 93°/65° 💧 None 💨 9 mph

Monday, Aug 31Mon Aug 31

Light rain 91°/68° 💧 0.11 in 💨 7 mph

Tuesday, Sep 1Tue Sep 1

Light rain 91°/69° 💧 0.28 in 💨 10 mph

Wednesday, Sep 2Wed Sep 2

Light rain 98°/72° 💧 0.01 in 💨 10 mph

Thursday, Sep 3Thu Sep 3

Mostly sunny 98°/74° 💧 None 💨 18 mph

Friday, Sep 4Fri Sep 4

Light rain 93°/72° 💧 0.03 in 💨 13 mph

Saturday, Sep 5Sat Sep 5

Light rain 85°/65° 💧 0.06 in 💨 8 mph

Sunday, Sep 6Sun Sep 6

Partly cloudy 84°/62° 💧 None 💨 7 mph

Monday, Sep 7Mon Sep 7

Light rain 69°/59° 💧 0.01 in 💨 7 mph

Tuesday, Sep 8Tue Sep 8

Overcast 82°/57° 💧 None 💨 11 mph

Wednesday, Sep 9Wed Sep 9

Sunny 82°/61° 💧 None 💨 14 mph

Thursday, Sep 10Thu Sep 10

Mostly cloudy 73°/52° 💧 None 💨 8 mph

Friday, Sep 11Fri Sep 11

Overcast 74°/54° 💧 None 💨 8 mph

Saturday, Sep 12Sat Sep 12

Overcast 80°/53° 💧 None 💨 13 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Chambersburg

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Chambersburg

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 11:00 AM

PM2.5 Fine particles Good 4,3µg/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 7,8µg/m³

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

O₃ Ozone Good 28,5µg/m³

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

NO₂ Nitrogen dioxide Good 4,8µg/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 Chambersburg

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 7,0High 🙂Fair

Sunday UV 8,0Very high 🙂Fair

Monday UV 7,0High 😐Moderate

Tuesday UV 7,0High 🙂Fair

Wednesday UV 8,0Very high —Unavailable

Thursday UV 8,0Very high —Unavailable

Hourly UV index today

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

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.

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 Chambersburg

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

Internal PR simulation: 4.50 Population: 22,319

DISCOVER WEATHER NEARBY Weather in other cities

Explore current conditions and forecasts for other locations.

Forecast data for Chambersburg were last refreshed today at 10:23 AM. The current forecast period extends through 30/08/2026 at 8:00 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.