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Current weather in Harmonsburg is clear sky.

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

Is the weather forecast for Harmonsburg updated regularly?

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

Now · 10:56 AM

Harmonsburg Weather & Hourly Forecast

United States · Pennsylvania · 16422

67°F

Sunny

Feels like: 68°F

💧 Humidity 76% 🌡 Pressure 30.06 inHg 💨 Wind 5 mph 👁 Visibility 19.4 mi ☁ Clouds 6% ☀️ UV index 2.7 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Harmonsburg

Today

11:00 AM

Sunny

70° 💧 0.002 in 💨 6 mph H 70%30.06 inHg

2:00 PM

Partly cloudy

72° 💧 0.002 in 💨 8 mph H 62%30.03 inHg

5:00 PM

Mostly sunny

72° 💧 0.000 in 💨 7 mph H 60%30.03 inHg

8:00 PM

Clear night

64° 💧 None 💨 8 mph H 86%30.06 inHg

11:00 PM

Clear night

61° 💧 None 💨 8 mph H 91%30.09 inHg

Tomorrow

2:00 AM

Clear night

58° 💧 None 💨 6 mph H 93%30.12 inHg

5:00 AM

Clear night

55° 💧 None 💨 5 mph H 92%30.15 inHg

8:00 AM

Sunny

55° 💧 None 💨 6 mph H 90%30.21 inHg

11:00 AM

Mostly sunny

67° 💧 None 💨 3 mph H 63%30.21 inHg

2:00 PM

Mostly sunny

72° 💧 None 💨 3 mph H 45%30.18 inHg

5:00 PM

Sunny

72° 💧 None 💨 3 mph H 48%30.15 inHg

8:00 PM

Mostly clear night

63° 💧 None 💨 7 mph H 80%30.21 inHg

11:00 PM

Mostly clear night

59° 💧 None 💨 6 mph H 86%30.24 inHg

Tuesday

2:00 AM

Overcast night

57° 💧 None 💨 6 mph H 89%30.24 inHg

5:00 AM

Overcast night

56° 💧 None 💨 6 mph H 83%30.24 inHg

8:00 AM

Mostly sunny

58° 💧 None 💨 6 mph H 84%30.24 inHg

Today

11:00 AM

Sunny

70° 💧 None 💨 6 mph H 70%30.06 inHg

12:00 PM

Partly cloudy

72° 💧 0.000 in 💨 8 mph H 65%30.06 inHg

1:00 PM

Partly cloudy

72° 💧 0.001 in 💨 8 mph H 63%30.06 inHg

2:00 PM

Partly cloudy

72° 💧 0.001 in 💨 8 mph H 62%30.03 inHg

3:00 PM

Mostly sunny

73° 💧 0.001 in 💨 8 mph H 60%30.03 inHg

4:00 PM

Mostly sunny

73° 💧 0.000 in 💨 7 mph H 59%30.03 inHg

5:00 PM

Mostly sunny

72° 💧 None 💨 7 mph H 60%30.03 inHg

6:00 PM

Sunny

70° 💧 None 💨 7 mph H 69%30.03 inHg

7:00 PM

Sunny

67° 💧 0.000 in 💨 9 mph H 80%30.06 inHg

8:00 PM

Clear night

64° 💧 None 💨 8 mph H 86%30.06 inHg

9:00 PM

Clear night

63° 💧 None 💨 8 mph H 87%30.09 inHg

10:00 PM

Clear night

62° 💧 None 💨 8 mph H 89%30.09 inHg

11:00 PM

Clear night

61° 💧 None 💨 8 mph H 91%30.09 inHg

Tomorrow

12:00 AM

Clear night

60° 💧 None 💨 8 mph H 91%30.12 inHg

1:00 AM

Clear night

59° 💧 None 💨 8 mph H 92%30.12 inHg

2:00 AM

Clear night

58° 💧 None 💨 6 mph H 93%30.12 inHg

3:00 AM

Clear night

57° 💧 None 💨 6 mph H 93%30.12 inHg

4:00 AM

Clear night

56° 💧 None 💨 5 mph H 92%30.15 inHg

5:00 AM

Clear night

55° 💧 None 💨 5 mph H 92%30.15 inHg

6:00 AM

Clear night

54° 💧 None 💨 5 mph H 93%30.18 inHg

7:00 AM

Sunny

53° 💧 None 💨 6 mph H 94%30.18 inHg

8:00 AM

Sunny

55° 💧 None 💨 6 mph H 90%30.21 inHg

9:00 AM

Sunny

59° 💧 None 💨 5 mph H 83%30.21 inHg

10:00 AM

Sunny

64° 💧 None 💨 4 mph H 74%30.21 inHg

11:00 AM

Mostly sunny

67° 💧 None 💨 3 mph H 63%30.21 inHg

12:00 PM

Mostly cloudy

70° 💧 None 💨 4 mph H 53%30.21 inHg

1:00 PM

Partly cloudy

71° 💧 None 💨 3 mph H 48%30.21 inHg

2:00 PM

Mostly sunny

72° 💧 None 💨 3 mph H 45%30.18 inHg

3:00 PM

Mostly sunny

73° 💧 None 💨 3 mph H 45%30.18 inHg

4:00 PM

Sunny

73° 💧 None 💨 3 mph H 46%30.18 inHg

5:00 PM

Sunny

72° 💧 None 💨 3 mph H 48%30.15 inHg

6:00 PM

Sunny

71° 💧 None 💨 4 mph H 58%30.18 inHg

7:00 PM

Sunny

67° 💧 None 💨 5 mph H 74%30.18 inHg

8:00 PM

Mostly clear night

63° 💧 None 💨 7 mph H 80%30.21 inHg

9:00 PM

Clear night

61° 💧 None 💨 7 mph H 81%30.21 inHg

10:00 PM

Clear night

60° 💧 None 💨 7 mph H 83%30.24 inHg

11:00 PM

Mostly clear night

59° 💧 None 💨 6 mph H 86%30.24 inHg

Tuesday

12:00 AM

Partly cloudy night

58° 💧 None 💨 7 mph H 87%30.24 inHg

1:00 AM

Overcast night

58° 💧 None 💨 7 mph H 88%30.24 inHg

2:00 AM

Overcast night

57° 💧 None 💨 6 mph H 89%30.24 inHg

3:00 AM

Overcast night

56° 💧 None 💨 6 mph H 87%30.24 inHg

4:00 AM

Overcast night

56° 💧 None 💨 7 mph H 84%30.24 inHg

5:00 AM

Overcast night

56° 💧 None 💨 6 mph H 83%30.24 inHg

6:00 AM

Clear night

56° 💧 None 💨 5 mph H 84%30.24 inHg

7:00 AM

Mostly sunny

55° 💧 None 💨 6 mph H 87%30.24 inHg

8:00 AM

Mostly sunny

58° 💧 None 💨 6 mph H 84%30.24 inHg

9:00 AM

Sunny

62° 💧 None 💨 5 mph H 81%30.27 inHg

10:00 AM

Mostly sunny

68° 💧 None 💨 4 mph H 74%30.24 inHg

11:00 AM

Sunny

72° 💧 None 💨 4 mph H 65%30.24 inHg

12:00 PM

Sunny

74° 💧 None 💨 4 mph H 57%30.24 inHg

1:00 PM

Sunny

76° 💧 None 💨 4 mph H 54%30.24 inHg

2:00 PM

Partly cloudy

77° 💧 None 💨 4 mph H 55%30.21 inHg

3:00 PM

Mostly cloudy

78° 💧 None 💨 5 mph H 56%30.18 inHg

4:00 PM

Mostly cloudy

78° 💧 None 💨 5 mph H 56%30.18 inHg

5:00 PM

Overcast

78° 💧 None 💨 5 mph H 57%30.18 inHg

6:00 PM

Overcast

77° 💧 None 💨 0 mph H 62%30.15 inHg

7:00 PM

Overcast

73° 💧 None 💨 3 mph H 82%30.15 inHg

8:00 PM

Overcast night

70° 💧 None 💨 5 mph H 81%30.15 inHg

Wednesday

5:00 AM

Partly cloudy night

67° 💧 None 💨 8 mph H 72%30.12 inHg

8:00 AM

Overcast

67° 💧 None 💨 9 mph H 79%30.12 inHg

11:00 AM

Partly cloudy

77° 💧 None 💨 10 mph H 74%30.06 inHg

2:00 PM

Mostly cloudy

82° 💧 None 💨 13 mph H 63%30.00 inHg

5:00 PM

Overcast

83° 💧 None 💨 11 mph H 59%29.91 inHg

8:00 PM

Overcast night

78° 💧 None 💨 10 mph H 68%29.91 inHg

11:00 PM

Partly cloudy night

71° 💧 None 💨 10 mph H 89%29.91 inHg

Thursday

2:00 AM

Partly cloudy night

70° 💧 None 💨 8 mph H 94%29.91 inHg

5:00 AM

Overcast night

69° 💧 None 💨 7 mph H 96%29.91 inHg

8:00 AM

Overcast

68° 💧 None 💨 6 mph H 97%29.91 inHg

11:00 AM

Overcast

71° 💧 None 💨 7 mph H 88%29.91 inHg

2:00 PM

Light rain

72° 💧 None 💨 6 mph H 82%29.88 inHg

5:00 PM

Light rain

69° 💧 None 💨 7 mph H 85%29.83 inHg

8:00 PM

Overcast night

65° 💧 None 💨 4 mph H 91%29.85 inHg

11:00 PM

Clear night

62° 💧 None 💨 5 mph H 90%29.88 inHg

Friday

2:00 AM

Mostly clear night

59° 💧 None 💨 5 mph H 94%29.91 inHg

5:00 AM

Clear night

57° 💧 None 💨 5 mph H 95%29.91 inHg

8:00 AM

Sunny

57° 💧 None 💨 6 mph H 85%29.97 inHg

11:00 AM

Sunny

64° 💧 None 💨 7 mph H 68%30.00 inHg

2:00 PM

Sunny

67° 💧 None 💨 5 mph H 60%29.97 inHg

5:00 PM

Sunny

67° 💧 None 💨 4 mph H 62%29.94 inHg

8:00 PM

Clear night

59° 💧 None 💨 2 mph H 84%29.94 inHg

11:00 PM

Clear night

55° 💧 None 💨 6 mph H 89%29.97 inHg

Saturday

2:00 AM

Clear night

53° 💧 None 💨 6 mph H 88%29.97 inHg

8:00 AM

Mostly cloudy

57° 💧 None 💨 8 mph H 82%29.94 inHg

2:00 PM

Mostly sunny

59° 💧 None 💨 6 mph H 85%29.97 inHg

8:00 PM

Mostly cloudy night

77° 💧 None 💨 7 mph H 55%29.94 inHg

Sunday

2:00 AM

Mostly clear night

70° 💧 None 💨 6 mph H 82%29.94 inHg

8:00 AM

Light rain

69° 💧 None 💨 7 mph H 88%30.00 inHg

2:00 PM

Mostly sunny

67° 💧 None 💨 6 mph H 96%30.06 inHg

8:00 PM

Light rain

83° 💧 None 💨 10 mph H 67%30.03 inHg

Monday

2:00 AM

Overcast night

77° 💧 None 💨 4 mph H 84%30.00 inHg

8:00 AM

Partly cloudy

74° 💧 None 💨 8 mph H 89%30.03 inHg

2:00 PM

Mostly sunny

74° 💧 None 💨 9 mph H 84%30.06 inHg

8:00 PM

Mostly clear night

87° 💧 None 💨 9 mph H 63%30.00 inHg

Tuesday

2:00 AM

Mostly clear night

80° 💧 None 💨 6 mph H 79%29.94 inHg

8:00 AM

Sunny

76° 💧 None 💨 8 mph H 84%29.94 inHg

2:00 PM

Sunny

72° 💧 None 💨 10 mph H 98%29.97 inHg

8:00 PM

Light thunderstorms

74° 💧 None 💨 10 mph H 98%29.94 inHg

Wednesday

2:00 AM

Mostly clear night

66° 💧 None 💨 7 mph H 96%30.00 inHg

8:00 AM

Sunny

59° 💧 None 💨 4 mph H 94%30.09 inHg

2:00 PM

Mostly sunny

56° 💧 None 💨 6 mph H 92%30.18 inHg

8:00 PM

Partly cloudy night

64° 💧 None 💨 8 mph H 64%30.21 inHg

Thursday

2:00 AM

Mostly clear night

57° 💧 None 💨 0 mph H 80%30.21 inHg

8:00 AM

Mostly cloudy

50° 💧 None 💨 4 mph H 95%30.24 inHg

2:00 PM

Sunny

50° 💧 None 💨 7 mph H 87%30.30 inHg

8:00 PM

Clear night

66° 💧 None 💨 3 mph H 57%30.21 inHg

Friday

2:00 AM

Clear night

59° 💧 None 💨 4 mph H 84%30.09 inHg

8:00 AM

Partly cloudy

57° 💧 None 💨 7 mph H 85%30.09 inHg

2:00 PM

Sunny

56° 💧 None 💨 6 mph H 90%30.06 inHg

8:00 PM

Clear night

74° 💧 None 💨 9 mph H 59%29.97 inHg

Saturday

2:00 AM

Partly cloudy night

69° 💧 None 💨 8 mph H 72%29.88 inHg

8:00 AM

Light rain

65° 💧 None 💨 12 mph H 98%29.85 inHg

2:00 PM

Overcast

65° 💧 None 💨 9 mph H 99%29.88 inHg

8:00 PM

Overcast night

63° 💧 None 💨 9 mph H 88%29.91 inHg

Sunday

2:00 AM

Mostly clear night

56° 💧 None 💨 4 mph H 83%29.94 inHg

8:00 AM

Mostly sunny

51° 💧 None 💨 2 mph H 93%30.00 inHg

2:00 PM

Mostly cloudy

55° 💧 None 💨 6 mph H 84%30.09 inHg

8:00 PM

Mostly clear night

60° 💧 None 💨 10 mph H 59%30.12 inHg

Monday

2:00 AM

Light rain

53° 💧 None 💨 11 mph H 70%30.18 inHg

In Harmonsburg and, more broadly, across the state of Pennsylvania: Clear skies will persist throughout the afternoon, with temperatures ranging from a mild 62 to 74 degrees Fahrenheit. Light north winds are expected, with sustained speeds around 7 mph and gusts reaching up to 12 mph. No precipitation is anticipated during the rest of the day, making for a dry and pleasant afternoon. The conditions are ideal for outdoor activities, with comfortable temperatures and calm breezes. As the day progresses, temperatures are unlikely to fluctuate significantly, maintaining a mild and stable weather pattern. Residents can enjoy the clear skies and gentle breezes without concern for weather disturbances. Overall, it looks like a calm and comfortable afternoon ahead.

15-Day Weather Outlook for Harmonsburg

TomorrowTomorrow

Mostly sunny 73°/53° 💧 None 💨 8 mph

Tuesday, Sep 8Tue Sep 8

Mostly sunny 78°/55° 💧 None 💨 7 mph

Wednesday, Sep 9Wed Sep 9

Mostly cloudy 83°/67° 💧 0.029 in 💨 13 mph

Thursday, Sep 10Thu Sep 10

Light rain 78°/68° 💧 0.109 in 💨 10 mph

Friday, Sep 11Fri Sep 11

Overcast 67°/57° 💧 0.005 in 💨 7 mph

Saturday, Sep 12Sat Sep 12

Mostly cloudy 59°/53° 💧 0.085 in 💨 8 mph

Sunday, Sep 13Sun Sep 13

Light rain 77°/67° 💧 0.059 in 💨 7 mph

Monday, Sep 14Mon Sep 14

Light rain 83°/74° 💧 0.022 in 💨 10 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 87°/72° 💧 0.155 in 💨 10 mph

Wednesday, Sep 16Wed Sep 16

Light thunderstorms 74°/56° 💧 0.461 in 💨 10 mph

Thursday, Sep 17Thu Sep 17

Partly cloudy 64°/50° 💧 0.001 in 💨 8 mph

Friday, Sep 18Fri Sep 18

Partly cloudy 66°/56° 💧 None 💨 7 mph

Saturday, Sep 19Sat Sep 19

Light rain 74°/65° 💧 0.303 in 💨 12 mph

Sunday, Sep 20Sun Sep 20

Mostly cloudy 63°/51° 💧 0.310 in 💨 9 mph

Monday, Sep 21Mon Sep 21

Light rain 60°/53° 💧 0.008 in 💨 11 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Harmonsburg

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Harmonsburg

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 11:00 AM

PM2.5 Fine particles Good 2,6µg/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 3,1µg/m³

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

O₃ Ozone Good 27,8µg/m³

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

NO₂ Nitrogen dioxide Good 2,7µg/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 Harmonsburg

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 7,2High 😊Good

Tomorrow UV 6,7High 🙂Fair

Tuesday UV 6,5High 🙂Fair

Wednesday UV 7,1High 🙂Fair

Thursday UV 6,0High 🙂Fair

Friday UV 5,0Moderate —Unavailable

Saturday UV 6,0High —Unavailable

Hourly UV index today

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

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 Harmonsburg

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · HARMONSBURG, PENNSYLVANIA

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 4:00 AM–5:00 AM.

96/100Best-hour score

BEST TIME TONIGHT 4:00 AM–5:00 AM Astronomical darkness: 9:23 PM–5:17 AM

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

☾ Moonlight 21% Waning Crescent · Moon about 14° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 73° 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 min74%

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 Harmonsburg were last refreshed today at 10:05 AM. The current forecast period extends through 08/09/2026 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.