Climate and monthly weather forecastLexington, MA
Climate and monthly weather forecast
Weather in January
January, like December, in Lexington, Massachusetts, is another cold winter month, with temperature in the range of an average low of 21.6°F (-5.8°C) and an average high of 32.9°F (0.5°C). The lowest temperatures are recorded in January, with averages reaching a high of 32.9°F (0.5°C) and a low of 21.6°F (-5.8°C). Weather in January »Weather in February
The last month of the winter, February, is also a wintry month in Lexington, Massachusetts, with an average temperature fluctuating between 35.8°F (2.1°C) and 21.9°F (-5.6°C). As Lexington, Massachusetts, transitions into February, the average high-temperature stands at a still wintry 35.8°F (2.1°C), offering little variation from the preceding month. Weather in February »Weather in March
March, the first month of the spring in Lexington, is a chilly month, with an average temperature fluctuating between 29.1°F (-1.6°C) and 43°F (6.1°C). The shift into March brings a slight increase in the average high-temperature, moving from a cold 35.8°F (2.1°C) in February to a frosty 43°F (6.1°C). Weather in March »Weather in April
April in Lexington, Massachusetts, is a mild spring month, with temperature in the range of an average high of 55.9°F (13.3°C) and an average low of 39.6°F (4.2°C). The arrival of April signals an increase in the average high-temperature, moving from a frosty 43°F (6.1°C) in March to a mild 55.9°F (13.3°C). Weather in April »Weather in May
May, the last month of the spring in Lexington, is an enjoyable month, with an average temperature ranging between min 49.1°F (9.5°C) and max 66.9°F (19.4°C). In May, the average high-temperature increases from a moderate 55.9°F (13.3°C) in April to an enjoyable 66.9°F (19.4°C). Weather in May »Weather in June
June, the first month of the summer in Lexington, is a moderately hot month, with an average temperature varying between 75.4°F (24.1°C) and 56.8°F (13.8°C). The arrival of June brings a soft temperature shift, with the average high-temperature nudging from a comfortable 66.9°F (19.4°C) in May to a moderately hot 75.4°F (24.1°C). Weather in June »Weather in July
July, like June, in Lexington, Massachusetts, is a moderately hot summer month, with temperature in the range of an average high of 82°F (27.8°C) and an average low of 63.9°F (17.7°C). July, noted for its average high-temperature of 82°F (27.8°C) and an average low-temperature of 63.9°F (17.7°C), is considered the warmest month. The heat index value during July is evaluated at a hot 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Lexington, Massachusetts, with an average temperature varying between 62.4°F (16.9°C) and 81°F (27.2°C). With the start of August, Lexington measures an average high-temperature of a still warm 81°F (27.2°C), not significantly differing from July's 82°F (27.8°C). Weather in August »Weather in September
The first month of the autumn, September, is still a pleasant month in Lexington, Massachusetts, with an average temperature varying between 72.9°F (22.7°C) and 56.3°F (13.5°C). The transition to September results in a modest reduction in average high-temperature, moving from a warm 81°F (27.2°C) in August to an agreeable 72.9°F (22.7°C). Weather in September »Weather in October
October, the same as September, in Lexington, Massachusetts, is another refreshing autumn month, with temperature in the range of an average high of 60.3°F (15.7°C) and an average low of 46.8°F (8.2°C). October weather is marked by a drop in the average high-temperature, falling from a pleasant 72.9°F (22.7°C) in September to a mild 60.3°F (15.7°C). Weather in October »Weather in November
November, the last month of the autumn in Lexington, is also a frosty month, with temperature in the range of an average low of 36.1°F (2.3°C) and an average high of 49.1°F (9.5°C). A moderate decline in the average high-temperature is seen during November, decreasing from a mild 60.3°F (15.7°C) in October to a chilly 49.1°F (9.5°C). Weather in November »Weather in December
December, the first month of the winter in Lexington, is also a wintry month, with an average temperature varying between 38.5°F (3.6°C) and 28.2°F (-2.1°C). Arrival of December comes with a reduction in the average high-temperature, falling from a frosty 49.1°F (9.5°C) in November to a cold 38.5°F (3.6°C). Weather in December »Updated: Jun 12, 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
The coldest period tends to be January, when average temperatures fluctuate between a high of 32.9°F (0.5°C) and a low of 21.6°F (-5.8°C).
In Lexington, during the entire year, the rain falls for 143.4 days and collects up to 27.52" (699mm) of precipitation.
January through May, October through December are months with snowfall.
Throughout the year, there are 31.2 snowfall days, and 19.88" (505mm) of snow is accumulated.
The most humid month is February, with an average relative humidity of 78%.
February is the month with the most snowfall. Snow falls for 7.7 days and accumulates 5.35" (136mm) of snow.
February has the least sunshine of the year, with an average of 4.6h of sunshine.
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.
April is the least humid month, with an average relative humidity of 70%.
In Lexington, snow does not fall in June through September.
With an average of 15h and 12min of daylight, June has the longest days of the year.
June through August, with an average maximum UV index of 6, are months with the highest UV index.
The warmest time of the year is July, with temperatures averaging a high of 82°F (27.8°C) and a low of 63.9°F (17.7°C).
With an average of 10.5h of sunshine, August has the most sunshine of the year.
September is the month with the least rainfall. Rain falls for 10.9 days and accumulates 1.38" (35mm) of precipitation.
The month with the most rainfall is December, when the rain falls for 9.9 days and typically aggregates up to 2.91" (74mm) of precipitation.
The month with the shortest days is December, with an average of 9h and 6min of daylight.
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
Lexington, MA
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.9°F).
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure
Lexington, MA
- Average pressure in January:
30.01"Hg - Average pressure in February:
29.99"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:
29.97"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:
30.03"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
Lexington, MA
- Average wind speed in January:
9mph - Average wind speed in February:
8.8mph - Average wind speed in March:
8.6mph - Average wind speed in April:
8.1mph - Average wind speed in May:
6.9mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.2mph - Average wind speed in October:
7.4mph - Average wind speed in November:
7.9mph - Average wind speed in December:
8.5mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity
Lexington, MA
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).
Average rainfall
Lexington, MA
- Average rainfall in January:
2.24" - Average rainfall in February:
2.17" - Average rainfall in March:
2.68" - Average rainfall in April:
2.72" - Average rainfall in May:
2.01" - Average rainfall in June:
2.2"
- Average rainfall in July:
2.05" - Average rainfall in August:
1.81" - Average rainfall in September:
1.38" - Average rainfall in October:
2.68" - Average rainfall in November:
2.68" - 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 (1.38").
Average rainfall days
Lexington, MA
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
10.9 days - Average rainfall days in April:
14.1 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
14.3 days
- Average rainfall days in July:
15.5 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
10.9 days - Average rainfall days in October:
13.6 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
9.9 days
The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is January (7.3 days).
Average snowfall
Lexington, MA
- Average snowfall in January:
3.23" - Average snowfall in February:
5.35" - Average snowfall in March:
4.13" - Average snowfall in April:
1.42" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.35").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Lexington, MA
- Average snowfall days in January:
7.9 days - Average snowfall days in February:
7.7 days - Average snowfall days in March:
7.3 days - Average snowfall days in April:
1.4 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:
0.2 days - Average snowfall days in November:
1.5 days - Average snowfall days in December:
5.1 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Lexington, MA
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 6min
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 6min - Average sunshine in February:
4h and 36min - Average sunshine in March:
5h and 42min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 18min - Average sunshine in June:
9h and 12min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
10h and 30min - Average sunshine in September:
8h and 24min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Lexington, MA
- Average sunshine days in January:
17.5 days - Average sunshine days in February:
14.5 days - Average sunshine days in March:
15.2 days - Average sunshine days in April:
14 days - Average sunshine days in May:
13.9 days - Average sunshine days in June:
14.3 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
16.3 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
15.4 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
17.4 days
The months with the most sunshine days are January and November (17.5 days).
The month with the least sunshine days is July (13.8 days).
Average UV index
Lexington, MA
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Lexington, MA
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
Lexington, MA
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
