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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in South Lancaster, Massachusetts, is a freezing cold winter month, with an average temperature fluctuating between 19.8°F (-6.8°C) and 31.5°F (-0.3°C). January, with its average high-temperature of 31.5°F (-0.3°C) and an average low-temperature of 19.8°F (-6.8°C), holds the record as the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is an icy month in South Lancaster, Massachusetts, with an average temperature ranging between max 34.7°F (1.5°C) and min 20.1°F (-6.6°C). With the start of February, South Lancaster measures an average high-temperature of a cold 34.7°F (1.5°C), not significantly differing from January's 31.5°F (-0.3°C). Weather in February »
Weather in March
March, the first month of the spring in South Lancaster, is still a cold month, with an average temperature fluctuating between 42.4°F (5.8°C) and 27.9°F (-2.3°C). In South Lancaster, the onset of March comes with a modest high-temperature shift, transitioning from February's 34.7°F (1.5°C) to a still icy 42.4°F (5.8°C). Weather in March »
Weather in April
April is a refreshing spring month in South Lancaster, Massachusetts, with an average temperature ranging between max 55.6°F (13.1°C) and min 38.1°F (3.4°C). South Lancaster in April experiences an increase in the average high-temperature, moving from March's icy 42.4°F (5.8°C) to a moderate 55.6°F (13.1°C). Weather in April »
Weather in May
The last month of the spring, May, is a comfortable month in South Lancaster, Massachusetts, with an average temperature ranging between min 47.8°F (8.8°C) and max 67.5°F (19.7°C). Observing a rise in May, the average high-temperature goes from April's moderate 55.6°F (13.1°C) to an enjoyable 67.5°F (19.7°C). Weather in May »
Weather in June
June, the first month of the summer in South Lancaster, is a moderately hot month, with an average temperature fluctuating between 75.2°F (24°C) and 55.4°F (13°C). June witnesses a subtle temperature ascent, adjusting from an enjoyable 67.5°F (19.7°C) in May to a moderately hot 75.2°F (24°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in South Lancaster, Massachusetts, with an average temperature varying between 81.9°F (27.7°C) and 62.2°F (16.8°C). July, with its average high-temperature of 81.9°F (27.7°C) and an average low-temperature of 62.2°F (16.8°C), holds the record as the warmest month. July's average heat index is calculated to be a tropical 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in South Lancaster, is another warm month, with an average temperature fluctuating between 80.1°F (26.7°C) and 60.4°F (15.8°C). South Lancaster experiences a transition to a still moderately hot 80.1°F (26.7°C) in average high-temperatures with the arrival of August, not greatly differing from July's 81.9°F (27.7°C). Weather in August »
Weather in September
September, the first month of the autumn in South Lancaster, is still a pleasant month, with an average temperature fluctuating between 54°F (12.2°C) and 72.5°F (22.5°C). September ushers in a minute temperature change, with average high-temperatures reducing from August's moderately hot 80.1°F (26.7°C) to a pleasant 72.5°F (22.5°C). Weather in September »
Weather in October
October, the same as September, in South Lancaster, Massachusetts, is another mild autumn month, with temperature in the range of an average high of 59.7°F (15.4°C) and an average low of 45°F (7.2°C). The transition into October indicates a reduction in the average high-temperature, down to a mild 59.7°F (15.4°C) from September's agreeable 72.5°F (22.5°C). Weather in October »
Weather in November
November, the last month of the autumn in South Lancaster, is another chilly month, with an average temperature ranging between max 47.3°F (8.5°C) and min 34.3°F (1.3°C). In November, the meteorological conditions alter, with the average high-temperature shifting from a mild 59.7°F (15.4°C) in October to a frosty 47.3°F (8.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in South Lancaster, Massachusetts, with an average temperature varying between 37.4°F (3°C) and 26.6°F (-3°C). A subtle decrease in the average high-temperature marks December, falling from November's chilly 47.3°F (8.5°C) to a cold 37.4°F (3°C). Weather in December »
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
With an average high-temperature of 31.5°F (-0.3°C) and an average low-temperature of 19.8°F (-6.8°C), January is the coldest month.
How many days does it rain in South Lancaster?
Throughout the year, there are 150.4 rainfall days, and 28.86" (733mm) of precipitation is accumulated.
When does it snow?
Months with snowfall in South Lancaster are January through May, October through December.
How much does it snow?
Throughout the year, there are 36.5 snowfall days, and 23.82" (605mm) of snow is accumulated.
When is the lowest UV index?
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
What is the most humid month?
With an average relative humidity of 81%, February is the most humid month.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 9.4 days and accumulates 6.1" (155mm) of snow.
What is the month with the least sunshine?
With an average of 4.6h of sunshine, February has the least sunshine of the year.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
What is the least humid month?
The least humid month is April, with an average relative humidity of 71%.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
With an average of 15h and 12min of daylight, June has the longest days of the year.
What are the months with the highest UV index?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What part of the year is the hottest?
July is South Lancaster's warmest month, registering average high temperatures of 81.9°F (27.7°C) and lows of 62.2°F (16.8°C).
What month has the most sunshine?
With an average of 10.2h of sunshine, August has the most sunshine of the year.
What is the driest month in South Lancaster?
September is the month with the least rainfall. Rain falls for 12.3 days and accumulates 1.57" (40mm) of precipitation.
What is the wettest month?
December is the month with the most rainfall. Rain falls for 10.7 days and accumulates 2.91" (74mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 6min of daylight.
Average temperature
South Lancaster, MA
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (31.5°F).
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
South Lancaster, MA
- Average pressure in January:
30.01"Hg - Average pressure in February:
30"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.94"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
South Lancaster, MA
- Average wind speed in January:
8.6mph - Average wind speed in February:
8.5mph - Average wind speed in March:
8.5mph - Average wind speed in April:
8mph - Average wind speed in May:
6.7mph - Average wind speed in June:
6.2mph
- Average wind speed in July:
5.6mph - Average wind speed in August:
5.5mph - Average wind speed in September:
5.9mph - Average wind speed in October:
7.1mph - Average wind speed in November:
7.6mph - Average wind speed in December:
8.2mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity
South Lancaster, MA
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (71%).
Average rainfall
South Lancaster, MA
- Average rainfall in January:
2.24" - Average rainfall in February:
2.2" - Average rainfall in March:
2.6" - Average rainfall in April:
2.64" - Average rainfall in May:
2.2" - Average rainfall in June:
2.44"
- Average rainfall in July:
2.32" - Average rainfall in August:
2.28" - Average rainfall in September:
1.57" - Average rainfall in October:
2.72" - Average rainfall in November:
2.72" - Average rainfall in December:
2.91"
The wettest month (with the highest rainfall) is December (2.91").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days
South Lancaster, MA
- Average rainfall days in January:
8.2 days - Average rainfall days in February:
7.3 days - Average rainfall days in March:
11.6 days - Average rainfall days in April:
13.9 days - Average rainfall days in May:
15.8 days - Average rainfall days in June:
15.3 days
- Average rainfall days in July:
16 days - Average rainfall days in August:
14.4 days - Average rainfall days in September:
12.3 days - Average rainfall days in October:
14.5 days - Average rainfall days in November:
10.4 days - Average rainfall days in December:
10.7 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is February (7.3 days).
Average snowfall
South Lancaster, MA
- Average snowfall in January:
4.06" - Average snowfall in February:
6.1" - Average snowfall in March:
5.28" - Average snowfall in April:
1.85" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is February (6.1").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
South Lancaster, MA
- Average snowfall days in January:
8.7 days - Average snowfall days in February:
9.4 days - Average snowfall days in March:
8 days - Average snowfall days in April:
1.8 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
2.4 days - Average snowfall days in December:
5.6 days
The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
South Lancaster, MA
- Average daylight in January:
9h and 3min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
5h and 0min - Average sunshine in February:
4h and 4min - Average sunshine in March:
5h and 5min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 0min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 2min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
South Lancaster, MA
- Average sunshine days in January:
16.5 days - Average sunshine days in February:
13.8 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
14.5 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
13.2 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
14.6 days - Average sunshine days in September:
15.1 days - Average sunshine days in October:
13.9 days - Average sunshine days in November:
17.4 days - Average sunshine days in December:
16.5 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is July (12.8 days).
Average UV index
South Lancaster, MA
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
South Lancaster, MA
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility
South Lancaster, MA
The months with the highest visibility are March, April, October, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August and September (5mi).
South Lancaster, Massachusetts, USA
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