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Current weather in Mercersville is overcast clouds.

Where can I find the hourly weather forecast for Mercersville?

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Is the weather forecast for Mercersville updated regularly?

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

Now · 1:05 AM

Mercersville Weather & Hourly Forecast

United States · Maryland · 21782

58°F

Overcast night

Feels like: 57°F

💧 Humidity 93% 🌡 Pressure 30.33 inHg 💨 Wind 5 mph 👁 Visibility 13.3 mi ☁ Clouds 100% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:58 AM 🌇 Sunset 7:08 PM

Hourly Forecast for Mercersville

Today

2:00 AM

Overcast night

58° 💧 0.055 in 💨 6 mph H 91%30.33 inHg

5:00 AM

Light rain

56° 💧 0.105 in 💨 7 mph H 92%30.33 inHg

8:00 AM

Light rain

53° 💧 0.020 in 💨 9 mph H 91%30.39 inHg

11:00 AM

Overcast

59° 💧 None 💨 9 mph H 61%30.42 inHg

2:00 PM

Mostly cloudy

65° 💧 None 💨 11 mph H 57%30.36 inHg

5:00 PM

Mostly cloudy

64° 💧 None 💨 11 mph H 59%30.36 inHg

8:00 PM

Partly cloudy night

61° 💧 None 💨 7 mph H 67%30.39 inHg

11:00 PM

Mostly cloudy night

55° 💧 None 💨 4 mph H 82%30.39 inHg

Tomorrow

2:00 AM

Overcast night

53° 💧 None 💨 5 mph H 81%30.39 inHg

5:00 AM

Overcast night

51° 💧 None 💨 7 mph H 76%30.39 inHg

8:00 AM

Overcast

51° 💧 None 💨 8 mph H 73%30.42 inHg

11:00 AM

Overcast

57° 💧 None 💨 9 mph H 67%30.39 inHg

2:00 PM

Mostly cloudy

62° 💧 None 💨 9 mph H 58%30.33 inHg

5:00 PM

Mostly sunny

63° 💧 None 💨 7 mph H 57%30.30 inHg

8:00 PM

Mostly cloudy night

55° 💧 None 💨 3 mph H 81%30.27 inHg

11:00 PM

Overcast night

52° 💧 None 💨 4 mph H 90%30.27 inHg

Today

2:00 AM

Overcast night

58° 💧 0.000 in 💨 6 mph H 91%30.33 inHg

3:00 AM

Light rain

58° 💧 0.009 in 💨 7 mph H 89%30.30 inHg

4:00 AM

Light rain

57° 💧 0.046 in 💨 6 mph H 91%30.33 inHg

5:00 AM

Light rain

56° 💧 0.043 in 💨 7 mph H 92%30.33 inHg

6:00 AM

Light rain

55° 💧 0.032 in 💨 8 mph H 92%30.33 inHg

7:00 AM

Light rain

54° 💧 0.030 in 💨 8 mph H 93%30.36 inHg

8:00 AM

Light rain

53° 💧 0.018 in 💨 9 mph H 91%30.39 inHg

9:00 AM

Overcast

54° 💧 0.002 in 💨 9 mph H 84%30.39 inHg

10:00 AM

Mostly cloudy

56° 💧 None 💨 9 mph H 69%30.39 inHg

11:00 AM

Overcast

59° 💧 None 💨 9 mph H 61%30.42 inHg

12:00 PM

Overcast

61° 💧 None 💨 9 mph H 62%30.39 inHg

1:00 PM

Mostly cloudy

63° 💧 None 💨 9 mph H 61%30.39 inHg

2:00 PM

Mostly cloudy

65° 💧 None 💨 11 mph H 57%30.36 inHg

3:00 PM

Overcast

65° 💧 None 💨 12 mph H 56%30.36 inHg

4:00 PM

Mostly cloudy

65° 💧 None 💨 12 mph H 57%30.33 inHg

5:00 PM

Mostly cloudy

64° 💧 None 💨 11 mph H 59%30.36 inHg

6:00 PM

Mostly cloudy

63° 💧 None 💨 9 mph H 62%30.36 inHg

7:00 PM

Partly cloudy

62° 💧 None 💨 8 mph H 65%30.36 inHg

8:00 PM

Partly cloudy night

61° 💧 None 💨 7 mph H 67%30.39 inHg

9:00 PM

Mostly clear night

59° 💧 None 💨 5 mph H 72%30.39 inHg

10:00 PM

Mostly clear night

56° 💧 None 💨 4 mph H 79%30.39 inHg

11:00 PM

Mostly cloudy night

55° 💧 None 💨 4 mph H 82%30.39 inHg

Tomorrow

12:00 AM

Overcast night

54° 💧 None 💨 4 mph H 82%30.39 inHg

1:00 AM

Overcast night

54° 💧 None 💨 5 mph H 81%30.39 inHg

2:00 AM

Overcast night

53° 💧 None 💨 5 mph H 81%30.39 inHg

3:00 AM

Overcast night

53° 💧 None 💨 6 mph H 80%30.36 inHg

4:00 AM

Overcast night

52° 💧 None 💨 7 mph H 78%30.36 inHg

5:00 AM

Overcast night

51° 💧 None 💨 7 mph H 76%30.39 inHg

6:00 AM

Overcast night

50° 💧 None 💨 8 mph H 76%30.39 inHg

7:00 AM

Overcast

50° 💧 None 💨 8 mph H 75%30.39 inHg

8:00 AM

Overcast

51° 💧 None 💨 8 mph H 73%30.42 inHg

9:00 AM

Overcast

53° 💧 None 💨 9 mph H 69%30.39 inHg

10:00 AM

Overcast

55° 💧 None 💨 9 mph H 68%30.39 inHg

11:00 AM

Overcast

57° 💧 None 💨 9 mph H 67%30.39 inHg

12:00 PM

Overcast

61° 💧 None 💨 9 mph H 63%30.36 inHg

1:00 PM

Mostly cloudy

62° 💧 None 💨 10 mph H 59%30.36 inHg

2:00 PM

Mostly cloudy

62° 💧 None 💨 9 mph H 58%30.33 inHg

3:00 PM

Mostly cloudy

63° 💧 None 💨 8 mph H 58%30.33 inHg

4:00 PM

Mostly sunny

63° 💧 None 💨 8 mph H 56%30.30 inHg

5:00 PM

Mostly sunny

63° 💧 None 💨 7 mph H 57%30.30 inHg

6:00 PM

Mostly cloudy

62° 💧 None 💨 5 mph H 62%30.30 inHg

7:00 PM

Overcast

58° 💧 None 💨 4 mph H 74%30.30 inHg

8:00 PM

Mostly cloudy night

55° 💧 None 💨 3 mph H 81%30.27 inHg

9:00 PM

Mostly cloudy night

54° 💧 None 💨 3 mph H 86%30.30 inHg

10:00 PM

Mostly clear night

53° 💧 None 💨 4 mph H 88%30.27 inHg

11:00 PM

Overcast night

52° 💧 None 💨 4 mph H 90%30.27 inHg

Friday

12:00 AM

Overcast night

51° 💧 None 💨 4 mph H 91%30.27 inHg

1:00 AM

Overcast night

51° 💧 None 💨 5 mph H 92%30.24 inHg

2:00 AM

Overcast night

51° 💧 None 💨 6 mph H 92%30.24 inHg

3:00 AM

Mostly cloudy night

50° 💧 None 💨 6 mph H 90%30.24 inHg

4:00 AM

Mostly cloudy night

50° 💧 None 💨 7 mph H 88%30.21 inHg

5:00 AM

Mostly cloudy night

50° 💧 None 💨 8 mph H 85%30.21 inHg

6:00 AM

Mostly clear night

49° 💧 None 💨 8 mph H 84%30.21 inHg

7:00 AM

Partly cloudy night

48° 💧 None 💨 7 mph H 85%30.21 inHg

8:00 AM

Sunny

50° 💧 None 💨 7 mph H 82%30.21 inHg

5:00 PM

Sunny

69° 💧 None 💨 11 mph H 41%30.12 inHg

8:00 PM

Clear night

60° 💧 None 💨 6 mph H 65%30.12 inHg

11:00 PM

Clear night

56° 💧 None 💨 8 mph H 72%30.12 inHg

Saturday

2:00 AM

Clear night

54° 💧 None 💨 7 mph H 79%30.12 inHg

5:00 AM

Clear night

51° 💧 None 💨 7 mph H 87%30.09 inHg

8:00 AM

Sunny

53° 💧 None 💨 7 mph H 86%30.09 inHg

11:00 AM

Sunny

66° 💧 None 💨 10 mph H 64%30.09 inHg

2:00 PM

Mostly cloudy

72° 💧 None 💨 13 mph H 46%30.00 inHg

5:00 PM

Overcast

72° 💧 None 💨 13 mph H 45%29.94 inHg

8:00 PM

Overcast night

65° 💧 None 💨 10 mph H 52%29.94 inHg

11:00 PM

Partly cloudy night

60° 💧 None 💨 9 mph H 60%29.94 inHg

Sunday

2:00 AM

Mostly cloudy night

59° 💧 None 💨 10 mph H 64%29.88 inHg

5:00 AM

Overcast night

57° 💧 None 💨 10 mph H 68%29.83 inHg

8:00 AM

Overcast

58° 💧 None 💨 10 mph H 65%29.80 inHg

11:00 AM

Overcast

64° 💧 None 💨 14 mph H 58%29.77 inHg

2:00 PM

Overcast

67° 💧 None 💨 14 mph H 55%29.77 inHg

5:00 PM

Overcast

67° 💧 None 💨 13 mph H 59%29.74 inHg

8:00 PM

Overcast night

65° 💧 None 💨 9 mph H 63%29.77 inHg

11:00 PM

Overcast night

63° 💧 None 💨 8 mph H 65%29.80 inHg

Monday

2:00 AM

Overcast night

61° 💧 None 💨 8 mph H 68%29.80 inHg

5:00 AM

Overcast night

59° 💧 None 💨 8 mph H 73%29.80 inHg

8:00 AM

Partly cloudy

60° 💧 None 💨 8 mph H 74%29.85 inHg

11:00 AM

Overcast

64° 💧 None 💨 8 mph H 64%29.85 inHg

2:00 PM

Overcast

71° 💧 None 💨 10 mph H 54%29.83 inHg

8:00 PM

Overcast night

71° 💧 None 💨 10 mph H 62%29.80 inHg

Tuesday

2:00 AM

Mostly cloudy night

67° 💧 None 💨 8 mph H 70%29.85 inHg

8:00 AM

Overcast

64° 💧 None 💨 5 mph H 81%29.88 inHg

2:00 PM

Mostly sunny

61° 💧 None 💨 6 mph H 88%29.97 inHg

8:00 PM

Overcast night

72° 💧 None 💨 6 mph H 58%29.94 inHg

Wednesday

2:00 AM

Clear night

67° 💧 None 💨 2 mph H 71%29.97 inHg

8:00 AM

Sunny

59° 💧 None 💨 3 mph H 89%29.97 inHg

2:00 PM

Sunny

59° 💧 None 💨 4 mph H 89%30.03 inHg

8:00 PM

Partly cloudy night

76° 💧 None 💨 8 mph H 55%30.00 inHg

Thursday

2:00 AM

Clear night

70° 💧 None 💨 11 mph H 65%30.00 inHg

8:00 AM

Sunny

62° 💧 None 💨 9 mph H 91%30.06 inHg

2:00 PM

Overcast

62° 💧 None 💨 9 mph H 93%30.09 inHg

8:00 PM

Overcast night

77° 💧 None 💨 9 mph H 57%30.09 inHg

Friday

2:00 AM

Partly cloudy night

71° 💧 None 💨 10 mph H 74%30.06 inHg

8:00 AM

Sunny

64° 💧 None 💨 9 mph H 90%30.09 inHg

2:00 PM

Overcast

65° 💧 None 💨 9 mph H 89%30.09 inHg

8:00 PM

Overcast night

72° 💧 None 💨 11 mph H 77%30.03 inHg

Saturday

2:00 AM

Mostly clear night

71° 💧 None 💨 10 mph H 83%29.97 inHg

8:00 AM

Overcast

68° 💧 None 💨 8 mph H 95%29.97 inHg

2:00 PM

Overcast

68° 💧 None 💨 9 mph H 95%29.97 inHg

8:00 PM

Overcast night

80° 💧 None 💨 13 mph H 64%29.88 inHg

Sunday

2:00 AM

Light rain

69° 💧 None 💨 10 mph H 95%29.85 inHg

8:00 AM

Overcast

69° 💧 None 💨 10 mph H 98%29.80 inHg

2:00 PM

Light rain

67° 💧 None 💨 7 mph H 99%29.77 inHg

8:00 PM

Mostly clear night

76° 💧 None 💨 6 mph H 60%29.71 inHg

Monday

2:00 AM

Mostly clear night

68° 💧 None 💨 10 mph H 62%29.74 inHg

8:00 AM

Sunny

60° 💧 None 💨 8 mph H 75%29.80 inHg

2:00 PM

Mostly sunny

56° 💧 None 💨 7 mph H 84%29.85 inHg

8:00 PM

Partly cloudy night

69° 💧 None 💨 11 mph H 50%29.83 inHg

Tuesday

2:00 AM

Clear night

60° 💧 None 💨 7 mph H 64%29.83 inHg

8:00 AM

Mostly sunny

54° 💧 None 💨 5 mph H 72%29.85 inHg

2:00 PM

Sunny

54° 💧 None 💨 10 mph H 75%29.88 inHg

8:00 PM

Overcast night

64° 💧 None 💨 14 mph H 51%29.85 inHg

Wednesday

2:00 AM

Mostly clear night

58° 💧 None 💨 9 mph H 65%29.88 inHg

8:00 AM

Sunny

54° 💧 None 💨 9 mph H 79%29.88 inHg

2:00 PM

Mostly sunny

54° 💧 None 💨 9 mph H 84%29.94 inHg

In Mercersville and, more broadly, across the state of Maryland: The morning will start with mostly cloudy skies and mild temperatures around 65 to 74 degrees Fahrenheit. Light northeast winds are expected, reaching up to 9 mph with gusts up to 17 mph. As the day progresses, there's a high likelihood of rain, with an expected accumulation of about 0.18 inches. The rain could develop at any time, so it’s a good idea to have an umbrella handy. Temperatures are expected to remain steady through the afternoon, maintaining the mild conditions. Overall, expect a cloudy day with periods of light rainfall and gentle breezes.

15-Day Weather Outlook for Mercersville

TomorrowTomorrow

Overcast 63°/50° 💧 None 💨 10 mph

Friday, Sep 25Fri Sep 25

Overcast 69°/48° 💧 0.281 in 💨 11 mph

Saturday, Sep 26Sat Sep 26

Mostly cloudy 72°/51° 💧 0.001 in 💨 13 mph

Sunday, Sep 27Sun Sep 27

Mostly cloudy 67°/57° 💧 0.001 in 💨 14 mph

Monday, Sep 28Mon Sep 28

Overcast 71°/59° 💧 0.132 in 💨 10 mph

Tuesday, Sep 29Tue Sep 29

Overcast 72°/61° 💧 None 💨 8 mph

Wednesday, Sep 30Wed Sep 30

Partly cloudy 76°/59° 💧 0.001 in 💨 8 mph

Thursday, Oct 1Thu Oct 1

Overcast 77°/62° 💧 0.002 in 💨 11 mph

Friday, Oct 2Fri Oct 2

Overcast 72°/64° 💧 0.011 in 💨 11 mph

Saturday, Oct 3Sat Oct 3

Overcast 80°/68° 💧 0.048 in 💨 13 mph

Sunday, Oct 4Sun Oct 4

Light rain 76°/67° 💧 0.488 in 💨 10 mph

Monday, Oct 5Mon Oct 5

Partly cloudy 69°/56° 💧 0.002 in 💨 11 mph

Tuesday, Oct 6Tue Oct 6

Mostly sunny 64°/54° 💧 None 💨 14 mph

Wednesday, Oct 7Wed Oct 7

Mostly sunny 58°/54° 💧 None 💨 9 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Mercersville

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Mercersville

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 2:00 AM

PM2.5 Fine particles Good 1,6µg/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 1,9µg/m³

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

O₃ Ozone Good 38,1µg/m³

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

NO₂ Nitrogen dioxide Good 5,9µg/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 Mercersville

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 5,9Moderate 😊Good

Tomorrow UV 5,6Moderate 🙂Fair

Friday UV 5,6Moderate 🙂Fair

Saturday UV 5,5Moderate 🙂Fair

Sunday UV 5,0Moderate 🙂Fair

Monday UV 6,0High —Unavailable

Tuesday UV 7,0High —Unavailable

Hourly UV index today

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

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

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

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 Mercersville

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · MERCERSVILLE, MARYLAND

Tonight's Stargazing & Shooting Stars

Local night-sky conditions and meteor activity for Jasper.

21/100Best-hour score

No good viewing window tonight Astronomical darkness exists, but current sky conditions are unfavorable.

☁ Cloud cover 100% Real hourly forecast for the best viewing hour.

☾ Moonlight 88% Waxing Gibbous · Moon about 15° above the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 49° high at the best hour.

✦ Estimated visible meteors Poor visibility Meteor activity may occur above the clouds, but local viewing conditions are not suitable.

Chance ≥1 meteor in 30 minNot meaningful

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

SEP 20–NOV 20

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

ACTIVE NOW

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

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% 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.

DISCOVER WEATHER NEARBY Weather in other cities

Explore current conditions and forecasts for other locations.

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Forecast data for Mercersville were last refreshed today at 1:05 AM. The current forecast period extends through 24/09/2026 at 11:00 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.