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Contents
- The climate of Stamford
- The Best Time to Visit Stamford
- The Worst Time to Visit Stamford
- Spring Weather in Stamford
- Summer Weather in Stamford
- Autumn Weather in Stamford
- Winter Weather in Stamford
- 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 sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
A wide aerial scenic cover shot over downtown Stamford, Connecticut, with two rivers and weighty rain clouds in the sky above
The climate of Stamford
Stamford, Connecticut, nestled within the United States' Northeast region, exhibits a climate classified as Cfa, or Humid Subtropical with no dry season, according to the Köppen climate system. This climate classification indicates an overall generous amount of rainfall annually, predominantly warm temperatures throughout the year, and no substantial dry periods. Stamford's geographical position, close to the Atlantic Coast, significantly contributes to this climatic pattern.
Overall, Stamford maintains relatively stable climate conditions throughout the year, with manageable variations in key weather parameters. Temperature swings range from a chilly low of 26.6°F (-3°C) in January to a balmy high of 81.3°F (27.4°C) in July. Visitors and locals alike should anticipate generous rainfall each month, peaking around 4.25" (108mm) in July. Even so, Stamford consistently maintains a comfortable, not overly damp, relative humidity level, typically hanging around the mid-70% mark.
Unique to Stamford, the city witnesses quite a bit of sunshine, providing visitors with plenty of opportunities for outdoor activity. Sunshine duration fluctuates modestly, attaining peak hours of over 10 per day during the summer season. Inland, the wind blows moderately year-round, with wind speeds averaging between 6.6mph (10.6km/h) and 10.1mph (16.3km/h), maintaining a gentle breeze that makes the warm weather more pleasant.
Overall, Stamford maintains relatively stable climate conditions throughout the year, with manageable variations in key weather parameters. Temperature swings range from a chilly low of 26.6°F (-3°C) in January to a balmy high of 81.3°F (27.4°C) in July. Visitors and locals alike should anticipate generous rainfall each month, peaking around 4.25" (108mm) in July. Even so, Stamford consistently maintains a comfortable, not overly damp, relative humidity level, typically hanging around the mid-70% mark.
Unique to Stamford, the city witnesses quite a bit of sunshine, providing visitors with plenty of opportunities for outdoor activity. Sunshine duration fluctuates modestly, attaining peak hours of over 10 per day during the summer season. Inland, the wind blows moderately year-round, with wind speeds averaging between 6.6mph (10.6km/h) and 10.1mph (16.3km/h), maintaining a gentle breeze that makes the warm weather more pleasant.
The Best Time to Visit Stamford
The ideal time to stop by Stamford is during late spring and early summer, when the weather strikes a delicate balance between comfortable and warm, specifically from May to June. Expect this period to be characterised by increased daylight hours ranging between 13.3 to 15.1 hours, allowing visitors to make the most out of their stay. Conditioned by a substantial sea temperature rise to a pleasant 63°F (17.2°C), coastal activities become more enjoyable. With rainfall still held in relative restraint until July, these comfortable conditions encourage outdoor exploration and immersion into Stamford's rich cultural heritage.
The Worst Time to Visit Stamford
Weather conditions in Stamford during the winter months present some challenges due to lower temperatures and increased precipitation. Specifically, January and February may pose some travel discomfort due as temperatures often plunge to lows of 26.6°F (-3°C) and 27.9°F (-2.3°C) respectively. The increased activity of precipitation in these months includes both rain and snow. With an average snowfall of 1.81" (46mm) in January and 2.44" (62mm) in February, driving conditions could be less than ideal. Decreased daylight hours, bottoming out to 9.6 hours in January, might also limit sightseeing activities.
Spring Weather in Stamford
Spring emerges as a season of renewal in Stamford, signalled by the reawakening of nature. Well-rounded weather conditions mark this season with a steady climb in temperature from 44.6°F (7°C) in March to a vibrant 65.8°F (18.8°C) by May - perfect for picnics in the park or casual strolls along the coast. An increase in daylight hours to 13.3 hours per day by April couples with more sunshine, offering more time for sightseeing.
Summer Weather in Stamford
Stamford's summer often unfolds as a sunny, warm period, painted in vibrant shades of blue. Concurrent with the rise in temperature reaching up to 81.3°F (27.4°C) in July, sea temperature renders swimming an inviting activity, peaking at an enjoyable 73.1°F (22.8°C). Even though precipitation amps up a notch in summer, reaching 4.25" (108mm) in July, generous sunlight keeps the overall mood upbeat with hours rising to a splendid 15.1 per day in June.
Autumn Weather in Stamford
By the time autumn rolls in, Stamford becomes awash in a palette of golden hues. This season observes a gradual cooling, with daily averages falling from 73.2°F (22.9°C) in September to 50.9°F (10.5°C) by November. Rainfall levels remain moderate during autumn, tapering off to 2.87" (73mm) in November. The decrease in sea temperatures, bottoming out to 53.8°F (12.1°C), leads to a reduction in coastal activities, while cooler weather conditions encourage exploration of the city's architectural marvels and museums.
Winter Weather in Stamford
Winter in Stamford carries a calm, serene beauty, blanketed in crisp cool air and occasionally adorned with a dusting of snow. Average temperatures dip down, with January being the coldest month, recording a low of 26.6°F (-3°C). Snowfall, although not overly abundant, averaging 1.81" (46mm) in January to 1.65 in December, adds to the serene beauty of the landscape. Despite shorter daylight hours in winter, the glow from the low-angled winter sun, intertwined with the freshwater pearls of falling snow, makes Stamford a mesmerising winter destination.
Weather in January
In Stamford, Connecticut, the beginning of the year brings with it weather conditions that are characterized by their coolness. Compared to its slightly warmer predecessor, December, average high temperature drops from 41.9°F (5.5°C) to 36°F (2.2°C). Weather in January »
Weather in February
Featuring slightly warmer days, February has an increased average maximum temperature standing at 38.3°F (3.5°C). This upward trend in temperature continues into the following month. Similar to January, winter lovers can relish another round of snowfall which adds a picturesque charm to the city of Stamford. Weather in February »
Weather in March
Transition to springtime in Stamford begins with March. With temperatures moving up to 44.6°F (7°C), a decrease in snowfall days becomes evident. The skies relax a bit as rainfall numbers start to rise. Moving into April, residents can anticipate a significant improvement in overall weather conditions. Weather in March »
Weather in April
April brings cheer and warmth, Arlingtonians can now enjoy the bright and blooming city in a more pleasant weather. The average high temperature has jumped to 55.4°F (13°C), embracing a notable upward shift from March. Substantiated by a significant increase in sunshine hours, the new spring bloom is truly underway. Weather in April »
Weather in May
May comes basked in warmth and welcoming brightness. Stamford experiences a marked increase in temperature, climbing up the Fahrenheit scale to reach an agreeable average of 65.8°F (18.8°C). However, it's worth noting that May also offers a considerable amount of rainfall. Weather in May »
Weather in June
Introducing Stamford to summer, June arrives with a clear emphasis on sunny and warm days. A notable surge in temperature leads to a pleasing 74.1°F (23.4°C), setting perfect conditions for outdoor activities. The additional sunshine and longer days complement the summer aura. Weather in June »
Weather in July
Mid-year in Stamford is well-defined by its warm and pleasant conditions perceived in July. The city experiences its highest average temperature of the year standing tall at 81.3°F (27.4°C). Understandably, locals and visitors flock to the pleasantly warm sea waters that perfectly mirror the incandescent summer weather. Weather in July »
Weather in August
Following the peak of the summer season, Stamford coastlines in August offers its warmest sea temperatures. Owning an average temperature of 80.4°F (26.9°C), the lessening of temperatures initially initiated in August continues. Weather in August »
Weather in September
With summer drawing a close, September marks the beginning of the fall season in Stamford. Witnessing a decline in temperatures, the shift is apparent from the 80.4°F (26.9°C) recorded in August. September paves the way for cooler, more balanced weather conditions. Weather in September »
Weather in October
The vibrant fall foliage takes center stage in Stamford during October. A notable decrease in temperature to 62.4°F (16.9°C) marks a significant transition from the heat of September. This heralds the onset of the cooler clime. Weather in October »
Weather in November
November invites Stamford into the winter season. Average temperatures witness a further drop to 50.9°F (10.5°C) from the previous month. Incidentally, this month may sometimes surprise residents with a slight occurrence of snowfall. Weather in November »
Weather in December
As the final chapter of the year in Stamford, December presents its coldest weather conditions. With a chilly 41.9°F (5.5°C) average temperature, a marked increase in snowfall compared to November is observed. Conditions tend to favor indoor activities as the month progresses. Weather in December »
Updated: Aug 29, 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 part of the year is the coldest?
January brings the lowest temperatures, with an average high of 36°F (2.2°C) and an average low of 26.6°F (-3°C).
What is the driest month?
January and February are months with the least rain in Stamford when the rain falls for 8.3 days and typically aggregates up to 2.36" (60mm) of rain.
How many days does it rain?
In Stamford, during the entire year, the rain falls for 164.1 days and collects up to 37.95" (964mm) of precipitation.
When does it snow in Stamford?
Months with snowfall are January through April, November and December.
How many days does it snow?
In Stamford, during the entire year, snow falls for 23.2 days and aggregates up to 8.66" (220mm) of snow.
What are the months with the lowest UV index?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What are the most humid months?
February, May, June and December, with an average relative humidity of 75%, are most humid months.
When does it snow the most?
The months with the most snowfall are February and March, with an average 2.44" (62mm) of accumulated snow.
What month is the ocean coldest?
February is the month with the coldest seawater, with an average ocean temperature of 39.4°F (4.1°C).
What is the month with the least sunshine?
February has the least sunshine of the year, with an average of 4.7h of sunshine.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Stamford, Connecticut, 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 months with the lowest humidity are April, August and November, with an average relative humidity of 72%.
When it does not snow?
May through October are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 6min of daylight.
What are the months with the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What part of the year is the hottest?
July is the month when Stamford, Connecticut, experiences its warmest temperatures, averaging a high of 81.3°F (27.4°C) and a low of 69.1°F (20.6°C).
What is the rainiest month?
July is the month with the most rainfall. Rain falls for 17.7 days and accumulates 4.25" (108mm) of precipitation.
What month has the most sunshine?
With an average of 10.5h of sunshine, July has the most sunshine of the year.
What is the month with the warmest ocean?
The month with the warmest seawater is August, with an average ocean temperature of 73°F (22.8°C).
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Stamford, CT
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (36°F).
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure
Stamford, CT
- Average pressure in January:
30.05"Hg - Average pressure in February:
30.03"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"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:
30.02"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Stamford, CT
- Average wind speed in January:
10.1mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.9mph - Average wind speed in April:
9.2mph - Average wind speed in May:
7.6mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.7mph - Average wind speed in September:
7.6mph - Average wind speed in October:
9mph - Average wind speed in November:
9.6mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity
Stamford, CT
The months with the highest relative humidity are February, May, June and December (75%).
The months with the lowest relative humidity are April, August and November (72%).
Average rainfall
Stamford, CT
- Average rainfall in January:
2.36" - Average rainfall in February:
2.36" - Average rainfall in March:
2.8" - Average rainfall in April:
3.15" - Average rainfall in May:
3.11" - Average rainfall in June:
3.27"
- Average rainfall in July:
4.25" - Average rainfall in August:
3.58" - Average rainfall in September:
2.76" - Average rainfall in October:
3.5" - Average rainfall in November:
2.87" - Average rainfall in December:
3.94"
The wettest month (with the highest rainfall) is July (4.25").
The driest months (with the least rainfall) are January and February (2.36").
Average rainfall days
Stamford, CT
- Average rainfall days in January:
8.3 days - Average rainfall days in February:
9.8 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
15.9 days - Average rainfall days in May:
17.2 days - Average rainfall days in June:
17 days
- Average rainfall days in July:
17.7 days - Average rainfall days in August:
16.7 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
13.9 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
11.6 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (8.3 days).
Average snowfall
Stamford, CT
The months with the highest snowfall are February and March (2.44").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Stamford, CT
- Average snowfall days in January:
6.3 days - Average snowfall days in February:
6.8 days - Average snowfall days in March:
4.7 days - Average snowfall days in April:
0.5 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:
0.1 days - Average snowfall days in November:
0.9 days - Average snowfall days in December:
3.9 days
The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature
Stamford, CT
The best month for swimming (with the highest average sea temperature) is August (73.1°F).
The coldest month (with the lowest average sea temperature) is February (39.5°F).
Average daylight / Average sunshine
Stamford, CT
- Average daylight in January:
9h and 4min - 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 3min - 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 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
5h and 0min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 2min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 3min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
10h and 2min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Stamford, CT
- Average sunshine days in January:
17.8 days - Average sunshine days in February:
13.8 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
11.8 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
15 days - Average sunshine days in November:
17.6 days - Average sunshine days in December:
15.5 days
The month with the most sunshine days is January (17.8 days).
The month with the least sunshine days is June (10.7 days).
Average UV index
Stamford, CT
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
Stamford, CT
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility
Stamford, CT
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).
Stamford, Connecticut, USA
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