Climate and monthly weather forecastBelmont, MA
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Belmont, Massachusetts, with an average temperature varying between 21.7°F (-5.7°C) and 33.4°F (0.8°C). In Belmont, January is the coldest month, with temperatures averaging a high of 33.4°F (0.8°C) and a low of 21.7°F (-5.7°C). Weather in January »Weather in February
February, the last month of the winter in Belmont, is also a wintry month, with temperature in the range of an average low of 23°F (-5°C) and an average high of 36.3°F (2.4°C). The onset of February brings with it an average high-temperature of a still icy 36.3°F (2.4°C), showing a negligible variation from the month before. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Belmont, Massachusetts, with an average temperature varying between 43.3°F (6.3°C) and 30°F (-1.1°C). The arrival of March signals a slight increase in the average high-temperature, moving from an icy 36.3°F (2.4°C) in February to a chilly 43.3°F (6.3°C). Weather in March »Weather in April
April is a refreshing spring month in Belmont, Massachusetts, with an average temperature ranging between max 55.8°F (13.2°C) and min 39.7°F (4.3°C). With the onset of April, the average high-temperature slightly shifts from March's frosty 43.3°F (6.3°C) to a refreshing 55.8°F (13.2°C). Weather in April »Weather in May
May, the last month of the spring in Belmont, is a comfortable month, with an average temperature fluctuating between 49.6°F (9.8°C) and 66.7°F (19.3°C). The onset of May brings a temperature shift, with the average high-temperature moving from a mild 55.8°F (13.2°C) in April to a still refreshing 66.7°F (19.3°C). Weather in May »Weather in June
June, the first month of the summer in Belmont, is a moderately hot month, with an average temperature fluctuating between 74.8°F (23.8°C) and 57°F (13.9°C). June showcases a minor temperature ascent, adjusting from May's comfortable 66.7°F (19.3°C) to a warm 74.8°F (23.8°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Belmont, Massachusetts, with an average temperature fluctuating between 82°F (27.8°C) and 64.4°F (18°C). Temperature readings reach their annual highs in July, averaging 82°F (27.8°C) and a minimum average of 64.4°F (18°C). The average heat index in July is calculated to be a tropical 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 Belmont, Massachusetts, with an average temperature ranging between max 80.8°F (27.1°C) and min 63.3°F (17.4°C). The advent of August observes an average high-temperature of a still warm 80.8°F (27.1°C), nearly identical to July's 82°F (27.8°C). Weather in August »Weather in September
The first month of the autumn, September, is also an agreeable month in Belmont, Massachusetts, with an average temperature ranging between min 56.5°F (13.6°C) and max 73°F (22.8°C). The onset of September is marked by a minor decrease in temperature, transitioning from a warm 80.8°F (27.1°C) in August to a pleasant 73°F (22.8°C). Weather in September »Weather in October
October, like September, in Belmont, Massachusetts, is another comfortable autumn month, with an average temperature fluctuating between 47.3°F (8.5°C) and 60.8°F (16°C). A shift in Belmont's weather is observed as September turns into October, with the average high temperature reducing from a pleasant 73°F (22.8°C) to a refreshing 60.8°F (16°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Belmont, Massachusetts, with an average temperature ranging between max 49.1°F (9.5°C) and min 36.9°F (2.7°C). Start of November brings a shift in the average high-temperature, falling from October's enjoyable 60.8°F (16°C) to a frosty 49.1°F (9.5°C). Weather in November »Weather in December
December, the first month of the winter in Belmont, is also a wintry month, with temperature in the range of an average high of 39°F (3.9°C) and an average low of 29.1°F (-1.6°C). The transition into December involves a decrease in the average high-temperature, falling from a frosty 49.1°F (9.5°C) in November to a wintry 39°F (3.9°C). Weather in December »Updated: Jun 13, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The coldest time of the year is January, with temperatures averaging a high of 33.4°F (0.8°C) and a low of 21.7°F (-5.7°C).
In Belmont, during the entire year, the rain falls for 142.8 days and collects up to 27.36" (695mm) of precipitation.
January through May, October through December are months with snowfall.
Throughout the year, there are 29.6 snowfall days, and 17.8" (452mm) of snow is accumulated.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
With an average relative humidity of 78%, February is the most humid month.
February is the month with the most snowfall. Snow falls for 6.8 days and accumulates 4.72" (120mm) of snow.
The month with the least sunshine is February, with an average of 4.7h 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 Belmont, snow does not fall in June through September.
June has the longest days of the year, with an average of 15h and 12min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
In Belmont, July registers the highest temperatures, averaging 82°F (27.8°C) at the peak and 64.4°F (18°C) at the lowest.
August has the most sunshine of the year, with an average of 10.5h of sunshine.
September is the month with the least rainfall. Rain falls for 10.7 days and accumulates 1.3" (33mm) of precipitation.
The month with the most rainfall is December, when the rain falls for 9.5 days and typically aggregates up to 2.95" (75mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 6min of daylight.
Average temperature
Belmont, MA
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure
Belmont, 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
Belmont, MA
- Average wind speed in January:
9.4mph - Average wind speed in February:
9.2mph - Average wind speed in March:
9mph - Average wind speed in April:
8.3mph - Average wind speed in May:
7.1mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
6mph - Average wind speed in August:
5.9mph - Average wind speed in September:
6.5mph - Average wind speed in October:
7.8mph - Average wind speed in November:
8.3mph - Average wind speed in December:
8.8mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity
Belmont, MA
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).
Average rainfall
Belmont, MA
- Average rainfall in January:
2.24" - Average rainfall in February:
2.24" - Average rainfall in March:
2.76" - Average rainfall in April:
2.83" - Average rainfall in May:
1.97" - Average rainfall in June:
2.13"
The wettest month (with the highest rainfall) is December (2.95").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days
Belmont, MA
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
8.5 days - Average rainfall days in March:
11.3 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
13.8 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
10.7 days - Average rainfall days in October:
13.5 days - Average rainfall days in November:
10.3 days - Average rainfall days in December:
9.5 days
The months with the highest number of rainy days are May and July (15.3 days).
The month with the least rainy days is January (7.8 days).
Average snowfall
Belmont, MA
- Average snowfall in January:
3.07" - Average snowfall in February:
4.72" - Average snowfall in March:
4.13" - Average snowfall in April:
0.91" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The month with the highest snowfall is February (4.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Belmont, MA
- Average snowfall days in January:
7.7 days - Average snowfall days in February:
6.8 days - Average snowfall days in March:
6.8 days - Average snowfall days in April:
1.3 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:
0.1 days - Average snowfall days in November:
1.3 days - Average snowfall days in December:
5.5 days
The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Belmont, 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 48min - 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 42min - Average sunshine in March:
5h and 48min - Average sunshine in April:
8h and 12min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 12min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 30min - Average sunshine in September:
8h and 30min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 54min
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 42min).
Average sunshine days
Belmont, MA
- Average sunshine days in January:
17.4 days - Average sunshine days in February:
14.5 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
14.2 days
- Average sunshine days in July:
14.2 days - Average sunshine days in August:
16.4 days - Average sunshine days in September:
17.4 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
17.6 days - Average sunshine days in December:
16.8 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is April (13.3 days).
Average UV index
Belmont, 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
Belmont, MA
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Belmont, 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).
