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

Now · 1:21 PM

South Lancaster Weather & Hourly Forecast

United States · Massachusetts · 01523

63°F

Sunny

Feels like: 54°F

💧 Humidity 47% 🌡 Pressure 30.42 inHg 💨 Wind 11 mph 👁 Visibility 33.5 mi ☁ Clouds 0% ☀️ UV index 5.2 · Moderate 🌅 Sunrise 6:35 AM 🌇 Sunset 6:42 PM

Hourly Forecast for South Lancaster

Today

2:00 PM

Partly cloudy

63° 💧 None 💨 11 mph H 45%30.39 inHg

5:00 PM

Mostly cloudy

60° 💧 None 💨 10 mph H 46%30.36 inHg

8:00 PM

Overcast night

53° 💧 None 💨 8 mph H 61%30.36 inHg

11:00 PM

Mostly cloudy night

50° 💧 None 💨 7 mph H 74%30.33 inHg

Tomorrow

2:00 AM

Overcast night

49° 💧 None 💨 8 mph H 75%30.27 inHg

5:00 AM

Overcast night

50° 💧 None 💨 9 mph H 74%30.24 inHg

8:00 AM

Overcast

52° 💧 None 💨 10 mph H 75%30.21 inHg

11:00 AM

Overcast

60° 💧 None 💨 12 mph H 60%30.18 inHg

2:00 PM

Overcast

62° 💧 None 💨 13 mph H 57%30.15 inHg

5:00 PM

Overcast

60° 💧 0.011 in 💨 11 mph H 59%30.12 inHg

8:00 PM

Overcast night

56° 💧 0.002 in 💨 10 mph H 70%30.12 inHg

11:00 PM

Overcast night

59° 💧 None 💨 12 mph H 61%30.09 inHg

Saturday

2:00 AM

Overcast night

60° 💧 None 💨 11 mph H 58%30.03 inHg

5:00 AM

Overcast night

59° 💧 0.001 in 💨 12 mph H 65%30.03 inHg

8:00 AM

Mostly cloudy

59° 💧 0.003 in 💨 12 mph H 69%30.03 inHg

11:00 AM

Light rain

61° 💧 0.307 in 💨 13 mph H 68%30.00 inHg

Today

2:00 PM

Partly cloudy

63° 💧 None 💨 11 mph H 45%30.39 inHg

3:00 PM

Partly cloudy

63° 💧 None 💨 11 mph H 43%30.39 inHg

4:00 PM

Mostly cloudy

62° 💧 None 💨 11 mph H 43%30.36 inHg

5:00 PM

Mostly cloudy

60° 💧 None 💨 10 mph H 46%30.36 inHg

6:00 PM

Overcast

57° 💧 None 💨 8 mph H 52%30.36 inHg

7:00 PM

Overcast night

54° 💧 None 💨 7 mph H 57%30.36 inHg

8:00 PM

Overcast night

53° 💧 None 💨 8 mph H 61%30.36 inHg

9:00 PM

Overcast night

52° 💧 None 💨 7 mph H 65%30.36 inHg

10:00 PM

Mostly cloudy night

51° 💧 None 💨 7 mph H 69%30.33 inHg

11:00 PM

Mostly cloudy night

50° 💧 None 💨 7 mph H 74%30.33 inHg

Tomorrow

12:00 AM

Mostly cloudy night

50° 💧 None 💨 8 mph H 74%30.30 inHg

1:00 AM

Mostly cloudy night

49° 💧 None 💨 8 mph H 75%30.30 inHg

2:00 AM

Overcast night

49° 💧 None 💨 8 mph H 75%30.27 inHg

3:00 AM

Overcast night

49° 💧 None 💨 8 mph H 74%30.27 inHg

4:00 AM

Overcast night

50° 💧 None 💨 9 mph H 74%30.24 inHg

5:00 AM

Overcast night

50° 💧 None 💨 9 mph H 74%30.24 inHg

6:00 AM

Overcast night

50° 💧 None 💨 9 mph H 75%30.24 inHg

7:00 AM

Overcast

50° 💧 None 💨 9 mph H 78%30.24 inHg

8:00 AM

Overcast

52° 💧 None 💨 10 mph H 75%30.21 inHg

9:00 AM

Overcast

54° 💧 None 💨 9 mph H 74%30.21 inHg

10:00 AM

Overcast

58° 💧 None 💨 11 mph H 65%30.21 inHg

11:00 AM

Overcast

60° 💧 None 💨 12 mph H 60%30.18 inHg

12:00 PM

Overcast

61° 💧 None 💨 13 mph H 59%30.18 inHg

1:00 PM

Overcast

63° 💧 None 💨 14 mph H 55%30.18 inHg

2:00 PM

Overcast

62° 💧 None 💨 13 mph H 57%30.15 inHg

3:00 PM

Overcast

61° 💧 None 💨 12 mph H 60%30.15 inHg

4:00 PM

Overcast

61° 💧 None 💨 13 mph H 57%30.12 inHg

5:00 PM

Overcast

60° 💧 0.002 in 💨 11 mph H 59%30.12 inHg

6:00 PM

Overcast

58° 💧 0.002 in 💨 11 mph H 62%30.12 inHg

7:00 PM

Light rain

57° 💧 0.007 in 💨 10 mph H 68%30.12 inHg

8:00 PM

Overcast night

56° 💧 0.002 in 💨 10 mph H 70%30.12 inHg

9:00 PM

Overcast night

57° 💧 None 💨 11 mph H 67%30.12 inHg

10:00 PM

Overcast night

58° 💧 None 💨 11 mph H 62%30.09 inHg

11:00 PM

Overcast night

59° 💧 None 💨 12 mph H 61%30.09 inHg

Saturday

12:00 AM

Overcast night

59° 💧 None 💨 12 mph H 61%30.06 inHg

1:00 AM

Overcast night

59° 💧 None 💨 12 mph H 59%30.06 inHg

2:00 AM

Overcast night

60° 💧 None 💨 11 mph H 58%30.03 inHg

3:00 AM

Overcast night

59° 💧 None 💨 11 mph H 60%30.03 inHg

4:00 AM

Overcast night

59° 💧 None 💨 11 mph H 62%30.03 inHg

5:00 AM

Overcast night

59° 💧 None 💨 12 mph H 65%30.03 inHg

6:00 AM

Mostly cloudy night

59° 💧 0.001 in 💨 12 mph H 67%30.03 inHg

7:00 AM

Overcast

58° 💧 None 💨 12 mph H 69%30.03 inHg

8:00 AM

Mostly cloudy

59° 💧 None 💨 12 mph H 69%30.03 inHg

9:00 AM

Overcast

60° 💧 None 💨 12 mph H 67%30.03 inHg

10:00 AM

Overcast

61° 💧 0.003 in 💨 13 mph H 67%30.03 inHg

11:00 AM

Light rain

61° 💧 0.011 in 💨 13 mph H 68%30.00 inHg

12:00 PM

Moderate rain

58° 💧 0.129 in 💨 11 mph H 91%30.03 inHg

1:00 PM

Moderate rain

57° 💧 0.168 in 💨 12 mph H 94%30.00 inHg

2:00 PM

Light rain

57° 💧 0.044 in 💨 13 mph H 95%30.00 inHg

3:00 PM

Moderate rain

56° 💧 0.141 in 💨 13 mph H 96%29.97 inHg

4:00 PM

Light rain

55° 💧 0.091 in 💨 13 mph H 96%29.97 inHg

5:00 PM

Light rain

56° 💧 0.012 in 💨 14 mph H 94%29.94 inHg

6:00 PM

Light rain

55° 💧 0.013 in 💨 13 mph H 93%29.94 inHg

7:00 PM

Light rain

54° 💧 0.018 in 💨 11 mph H 94%29.94 inHg

8:00 PM

Light rain

55° 💧 0.028 in 💨 10 mph H 97%29.94 inHg

Sunday

5:00 AM

Moderate rain

54° 💧 None 💨 16 mph H 99%29.71 inHg

8:00 AM

Moderate rain

53° 💧 None 💨 16 mph H 99%29.77 inHg

11:00 AM

Moderate rain

54° 💧 None 💨 16 mph H 99%29.77 inHg

2:00 PM

Light rain

54° 💧 None 💨 16 mph H 99%29.80 inHg

5:00 PM

Light rain

55° 💧 None 💨 15 mph H 98%29.80 inHg

8:00 PM

Light rain

54° 💧 None 💨 14 mph H 99%29.83 inHg

11:00 PM

Moderate rain

54° 💧 None 💨 13 mph H 99%29.83 inHg

Monday

2:00 AM

Light rain

54° 💧 None 💨 15 mph H 99%29.80 inHg

5:00 AM

Light rain

54° 💧 None 💨 15 mph H 99%29.83 inHg

8:00 AM

Light rain

54° 💧 None 💨 14 mph H 99%29.85 inHg

11:00 AM

Light rain

55° 💧 None 💨 12 mph H 99%29.85 inHg

2:00 PM

Light rain

56° 💧 None 💨 14 mph H 95%29.83 inHg

5:00 PM

Overcast

56° 💧 None 💨 14 mph H 94%29.83 inHg

8:00 PM

Light rain

56° 💧 None 💨 12 mph H 94%29.85 inHg

11:00 PM

Light rain

55° 💧 None 💨 11 mph H 97%29.88 inHg

Tuesday

2:00 AM

Overcast night

55° 💧 None 💨 11 mph H 97%29.85 inHg

5:00 AM

Overcast night

56° 💧 None 💨 10 mph H 95%29.88 inHg

8:00 AM

Overcast

57° 💧 None 💨 8 mph H 92%29.94 inHg

11:00 AM

Overcast

63° 💧 None 💨 8 mph H 79%29.94 inHg

2:00 PM

Overcast

67° 💧 None 💨 6 mph H 70%29.94 inHg

5:00 PM

Overcast

68° 💧 None 💨 4 mph H 71%29.94 inHg

8:00 PM

Mostly clear night

60° 💧 None 💨 3 mph H 90%29.97 inHg

11:00 PM

Mostly clear night

56° 💧 None 💨 2 mph H 97%30.00 inHg

Wednesday

2:00 AM

Overcast night

56° 💧 None 💨 2 mph H 98%30.00 inHg

8:00 AM

Partly cloudy

60° 💧 None 💨 5 mph H 88%29.94 inHg

2:00 PM

Overcast

59° 💧 None 💨 5 mph H 88%29.97 inHg

8:00 PM

Mostly cloudy night

70° 💧 None 💨 7 mph H 63%29.88 inHg

Thursday

2:00 AM

Mostly cloudy night

64° 💧 None 💨 6 mph H 82%29.88 inHg

8:00 AM

Mostly sunny

62° 💧 None 💨 12 mph H 80%29.85 inHg

2:00 PM

Partly cloudy

57° 💧 None 💨 10 mph H 77%29.97 inHg

8:00 PM

Overcast night

68° 💧 None 💨 9 mph H 45%29.91 inHg

Friday

2:00 AM

Overcast night

61° 💧 None 💨 6 mph H 57%29.88 inHg

8:00 AM

Overcast

56° 💧 None 💨 4 mph H 88%29.80 inHg

2:00 PM

Overcast

63° 💧 None 💨 10 mph H 90%29.68 inHg

8:00 PM

Mostly cloudy night

71° 💧 None 💨 13 mph H 54%29.71 inHg

Saturday

2:00 AM

Mostly cloudy night

58° 💧 None 💨 7 mph H 57%29.85 inHg

8:00 AM

Overcast

52° 💧 None 💨 6 mph H 70%29.94 inHg

2:00 PM

Mostly cloudy

52° 💧 None 💨 7 mph H 71%30.00 inHg

8:00 PM

Mostly clear night

63° 💧 None 💨 7 mph H 45%29.94 inHg

Sunday

2:00 AM

Overcast night

53° 💧 None 💨 6 mph H 68%30.00 inHg

8:00 AM

Overcast

49° 💧 None 💨 4 mph H 70%30.06 inHg

2:00 PM

Light rain

48° 💧 None 💨 5 mph H 83%30.06 inHg

8:00 PM

Moderate rain

50° 💧 None 💨 9 mph H 96%30.00 inHg

Monday

2:00 AM

Mostly clear night

46° 💧 None 💨 5 mph H 99%30.03 inHg

8:00 AM

Mostly sunny

43° 💧 None 💨 6 mph H 98%30.06 inHg

2:00 PM

Mostly sunny

46° 💧 None 💨 7 mph H 95%30.15 inHg

8:00 PM

Mostly clear night

61° 💧 None 💨 4 mph H 46%30.15 inHg

Tuesday

2:00 AM

Clear night

50° 💧 None 💨 6 mph H 84%30.18 inHg

8:00 AM

Sunny

47° 💧 None 💨 7 mph H 88%30.18 inHg

2:00 PM

Sunny

51° 💧 None 💨 6 mph H 81%30.18 inHg

8:00 PM

Partly cloudy night

66° 💧 None 💨 10 mph H 52%30.06 inHg

Wednesday

2:00 AM

Clear night

55° 💧 None 💨 8 mph H 83%30.00 inHg

8:00 AM

Mostly sunny

53° 💧 None 💨 10 mph H 94%29.91 inHg

2:00 PM

Mostly cloudy

55° 💧 None 💨 8 mph H 92%29.83 inHg

8:00 PM

Overcast night

60° 💧 None 💨 8 mph H 88%29.68 inHg

Thursday

2:00 AM

Mostly cloudy night

55° 💧 None 💨 8 mph H 75%29.68 inHg

8:00 AM

Mostly sunny

48° 💧 None 💨 11 mph H 82%29.65 inHg

2:00 PM

Partly cloudy

49° 💧 None 💨 14 mph H 72%29.71 inHg

8:00 PM

Mostly clear night

57° 💧 None 💨 18 mph H 41%29.71 inHg

Friday

2:00 AM

Mostly clear night

49° 💧 None 💨 14 mph H 58%29.80 inHg

In South Lancaster and, more broadly, across the state of Massachusetts: This morning will start with mostly cloudy skies and mild temperatures ranging from 52 to 66 degrees Fahrenheit. Winds will be coming from the north at around 10 mph, with occasional gusts reaching up to 23 mph. As the day progresses into the afternoon, the cloud cover is expected to remain, but no precipitation is forecasted. Temperatures will stay mild, providing comfortable conditions for outdoor activities. Winds will continue at moderate speeds, with gusts still reaching around 23 mph. Overall, it looks like a relatively calm and cloudy day with no significant weather disturbances expected.

15-Day Weather Outlook for South Lancaster

TomorrowTomorrow

Mostly cloudy 63°/49° 💧 None 💨 14 mph

Saturday, Sep 26Sat Sep 26

Overcast 61°/54° 💧 None 💨 14 mph

Sunday, Sep 27Sun Sep 27

Moderate rain 55°/53° 💧 1.340 in 💨 16 mph

Monday, Sep 28Mon Sep 28

Light rain 56°/54° 💧 0.472 in 💨 15 mph

Tuesday, Sep 29Tue Sep 29

Overcast 68°/55° 💧 0.025 in 💨 11 mph

Wednesday, Sep 30Wed Sep 30

Mostly cloudy 70°/56° 💧 1.137 in 💨 7 mph

Thursday, Oct 1Thu Oct 1

Mostly cloudy 68°/57° 💧 0.001 in 💨 12 mph

Friday, Oct 2Fri Oct 2

Overcast 71°/56° 💧 0.045 in 💨 13 mph

Saturday, Oct 3Sat Oct 3

Mostly cloudy 63°/52° 💧 None 💨 7 mph

Sunday, Oct 4Sun Oct 4

Moderate rain 53°/48° 💧 0.298 in 💨 9 mph

Monday, Oct 5Mon Oct 5

Mostly sunny 61°/43° 💧 0.136 in 💨 7 mph

Tuesday, Oct 6Tue Oct 6

Partly cloudy 66°/47° 💧 None 💨 10 mph

Wednesday, Oct 7Wed Oct 7

Overcast 60°/53° 💧 0.048 in 💨 10 mph

Thursday, Oct 8Thu Oct 8

Mostly cloudy 57°/48° 💧 0.006 in 💨 18 mph

Friday, Oct 9Fri Oct 9

Mostly sunny 49°/49° 💧 None 💨 14 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in South Lancaster

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for South Lancaster

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 2:00 PM

PM2.5 Fine particles Good 1,9µg/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 Fair 83,7µg/m³

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

NO₂ Nitrogen dioxide Good 2,1µg/m³

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

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in South Lancaster

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 5,2Moderate 🙂Fair

Tomorrow UV 3,5Moderate 🙂Fair

Saturday UV 0,5Low 🙂Fair

Sunday UV 0,2Low 🙂Fair

Monday UV 3,0Moderate 😊Good

Tuesday UV 6,0High —Unavailable

Wednesday UV 6,0High —Unavailable

Hourly UV index today

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

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

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

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 South Lancaster

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SOUTH LANCASTER, MASSACHUSETTS

Tonight's Stargazing & Shooting Stars

Local night-sky conditions and meteor activity for Jasper.

28/100Best-hour score

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

☁ Cloud cover 84% Real hourly forecast for the best viewing hour.

☾ Moonlight 98% Full Moon · Moon about 41° above the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 32° 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 South Lancaster were last refreshed today at 1:16 PM. The current forecast period extends through 26/09/2026 at 11:00 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.