Climate and monthly weather forecastHarwich, MA
Climate and monthly weather forecast
Weather in January
January, like December, in Harwich, Massachusetts, is a wintry winter month, with temperature in the range of an average low of 31.6°F (-0.2°C) and an average high of 39°F (3.9°C). January and February mark Harwich's lowest temperatures, averaging a high-temperature of 39°F (3.9°C). Weather in January »Weather in February
February, the last month of the winter in Harwich, is also a wintry month, with an average temperature fluctuating between 39°F (3.9°C) and 32°F (0°C). January and February are characterised by lowest temperatures, with an average high of 39°F (3.9°C). Weather in February »Weather in March
March, the first month of the spring in Harwich, is still a cold month, with an average temperature fluctuating between 35.4°F (1.9°C) and 41°F (5°C). In March, Harwich's weather conditions record an average high-temperature of a still cold 41°F (5°C), demonstrating little divergence from the preceding month. Weather in March »Weather in April
April is a frosty spring month in Harwich, Massachusetts, with an average temperature ranging between min 42.4°F (5.8°C) and max 46.9°F (8.3°C). April's arrival signals a subtle increase in average high-temperatures, moving from March's wintry 41°F (5°C) to a frosty 46.9°F (8.3°C). Weather in April »Weather in May
May, the last month of the spring in Harwich, is a cool month, with an average temperature ranging between max 54.3°F (12.4°C) and min 50.5°F (10.3°C). With the onset of May, Harwich's average high-temperature experiences a slight rise, moving from April's chilly 46.9°F (8.3°C) to a cool 54.3°F (12.4°C). Weather in May »Weather in June
The first month of the summer, June, is a refreshing month in Harwich, Massachusetts, with an average temperature fluctuating between 58.8°F (14.9°C) and 63°F (17.2°C). As June arrives, Harwich's weather shows a minor increase in high-temperatures, edging from May's fresh 54.3°F (12.4°C) to an enjoyable 63°F (17.2°C). Weather in June »Weather in July
July in Harwich, Massachusetts, is a pleasant summer month, with an average temperature varying between 67.1°F (19.5°C) and 70.3°F (21.3°C). Observing a slight rise in July, the average high-temperature shifts from June's enjoyable 63°F (17.2°C) to an agreeable 70.3°F (21.3°C). Weather in July »Weather in August
The last month of the summer, August, is another pleasant month in Harwich, Massachusetts, with temperature in the range of an average high of 71.6°F (22°C) and an average low of 68.2°F (20.1°C). August is the month when Harwich experiences its warmest temperatures, averaging a high of 71.6°F (22°C) and a low of 68.2°F (20.1°C). Weather in August »Weather in September
September, the first month of the autumn in Harwich, is still a comfortable month, with an average temperature varying between 63.3°F (17.4°C) and 66.6°F (19.2°C). During September, Harwich observes a subtle ascent to a comfortable 66.6°F (19.2°C) from August's 71.6°F (22°C) in the average high-temperature. Weather in September »Weather in October
October, like September, is a moderate autumn month in Harwich, Massachusetts, with an average temperature ranging between max 59.5°F (15.3°C) and min 54.9°F (12.7°C). The arrival of October correlates with a minor temperature reduction, down from September's enjoyable 66.6°F (19.2°C) to a still refreshing 59.5°F (15.3°C). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Harwich, Massachusetts, with an average temperature ranging between max 51.3°F (10.7°C) and min 45.5°F (7.5°C). The onset of November is marked by a minor decrease in temperature, transitioning from a refreshing 59.5°F (15.3°C) in October to a cool 51.3°F (10.7°C). Weather in November »Weather in December
December, the first month of the winter in Harwich, is also a frosty month, with temperature in the range of an average low of 37.6°F (3.1°C) and an average high of 44.4°F (6.9°C). Harwich's December weather features a light decline in high-temperatures, reducing from a fresh 51.3°F (10.7°C) in November to a frosty 44.4°F (6.9°C). Weather in December »Updated: Jul 9, 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
Harwich's coldest months, January and February, record an average high-temperature of 39°F (3.9°C).
In Harwich, during the entire year, the rain falls for 142.4 days and collects up to 22.09" (561mm) of precipitation.
Months with snowfall are January through April, November and December.
Throughout the year, there are 20.8 snowfall days, and 4.37" (111mm) 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.
February is the month with the most snowfall. Snow falls for 5 days and accumulates 1.38" (35mm) of snow.
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.
In Harwich, snow does not fall in May through October.
The months with the highest humidity are June and July, with an average relative humidity of 85%.
With an average of 15h and 12min of daylight, June has the longest days of the year.
The months with the highest UV index in Harwich are July and August, with an average maximum UV index of 6.
In Harwich, August is known for its average highest temperatures, reaching a high of 71.6°F (22°C) and a low of 68.2°F (20.1°C).
With an average of 10.7h of sunshine, August has the most sunshine of the year.
The month with the most rainfall is October, when the rain falls for 13.4 days and typically aggregates up to 2.83" (72mm) of precipitation.
The least humid month is November, with an average relative humidity of 74%.
November is the month with the least rainfall. Rain falls for 11.5 days and accumulates 1.46" (37mm) of precipitation.
The month with the shortest days is December, with an average of 9h and 12min of daylight.
The month with the least sunshine is December, with an average of 4.3h of sunshine.
Average temperature
Harwich, MA
The warmest month (with the highest average high temperature) is August (71.6°F).
The months with the lowest average high temperature are January and February (39°F).
The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).
Average pressure
Harwich, MA
- Average pressure in January:
29.99"Hg - Average pressure in February:
29.98"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.96"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:
30.06"Hg - Average pressure in December:
30.02"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Harwich, MA
- Average wind speed in January:
18mph - Average wind speed in February:
17.5mph - Average wind speed in March:
17.6mph - Average wind speed in April:
15.2mph - Average wind speed in May:
13.2mph - Average wind speed in June:
12.4mph
- Average wind speed in July:
11.6mph - Average wind speed in August:
11.4mph - Average wind speed in September:
13.5mph - Average wind speed in October:
15.5mph - Average wind speed in November:
16.9mph - Average wind speed in December:
17.5mph
The windiest month (with the highest average wind speed) is January (18mph).
The calmest month (with the lowest average wind speed) is August (11.4mph).
Average humidity
Harwich, MA
The months with the highest relative humidity are June and July (85%).
The month with the lowest relative humidity is November (74%).
Average rainfall
Harwich, MA
- Average rainfall in January:
1.69" - Average rainfall in February:
1.57" - Average rainfall in March:
1.85" - Average rainfall in April:
2.05" - Average rainfall in May:
1.81" - Average rainfall in June:
1.69"
- Average rainfall in July:
1.73" - Average rainfall in August:
1.5" - Average rainfall in September:
1.85" - Average rainfall in October:
2.83" - Average rainfall in November:
1.46" - Average rainfall in December:
2.05"
The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is November (1.46").
Average rainfall days
Harwich, MA
- Average rainfall days in January:
9.5 days - Average rainfall days in February:
8.3 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
13.1 days - Average rainfall days in May:
14.6 days - Average rainfall days in June:
13.4 days
- Average rainfall days in July:
13.8 days - Average rainfall days in August:
12.1 days - Average rainfall days in September:
10.7 days - Average rainfall days in October:
13.4 days - Average rainfall days in November:
11.5 days - Average rainfall days in December:
11.2 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is February (8.3 days).
Average snowfall
Harwich, MA
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Harwich, MA
- Average snowfall days in January:
6 days - Average snowfall days in February:
5 days - Average snowfall days in March:
3.7 days - Average snowfall days in April:
0.8 days - Average snowfall days in May:
0 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 days - Average snowfall days in November:
0.6 days - Average snowfall days in December:
4.7 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Harwich, MA
- Average daylight in January:
9h and 36min - 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 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 12min
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 12min).
- Average sunshine in January:
4h and 30min - Average sunshine in February:
4h and 30min - Average sunshine in March:
5h and 48min - Average sunshine in April:
8h and 18min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 24min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 42min - Average sunshine in September:
8h and 30min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days
Harwich, MA
- Average sunshine days in January:
13 days - Average sunshine days in February:
13.2 days - Average sunshine days in March:
13.9 days - Average sunshine days in April:
14.5 days - Average sunshine days in May:
14.8 days - Average sunshine days in June:
15.7 days
- Average sunshine days in July:
16.4 days - Average sunshine days in August:
17.6 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
14.9 days - Average sunshine days in December:
13.6 days
The month with the most sunshine days is August (17.6 days).
The month with the least sunshine days is January (13 days).
Average UV index
Harwich, MA
The months with the highest UV index are 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
Harwich, MA
The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility
Harwich, MA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
