Climate and monthly weather forecastOld Saybrook, CT
Climate and monthly weather forecast
The climate of Old Saybrook
Old Saybrook, Connecticut, fits within the Cfb category of the Köppen climate classification system. In this marine west coast environment with warm summer temperature, the town experiences a range of weather conditions throughout the year. Moving from January to December, a gradual transition of climatological conditions occurs, reflecting its geographical position on the edge of North America's northeast boundary.Daily temperatures shift from an average high of 35.2°F (1.8°C) in January up to a peak of 79.7°F (26.5°C) in July, before dipping back down to 41.9°F (5.5°C) in December. These fluctuations bring a mixed array of weather sets to Old Saybrook's residents. The temperature of the sea harmonizes with these land conditions, dropping to a chilly 38.8°F (3.8°C) in February and peaking at a pleasantly warm 72.1°F (22.3°C) in August.
A typical year in Old Saybrook sees a fairly constant level of humidity at around 74% to 78% but substantial fluctuations in the amount of rainfall and snowfall within a month. Enjoying a considerable measure of rainfall year-round, Old Saybrook sees the least precipitation in September with 1.93" (49mm), while December receives the most at 3.66" (93mm). From January to March, and again in November and December, the town also experiences snowfall. January brings the highest snowfall at 2.17" (55mm) and November the least at 0.2" (5mm).
Suffused with plenty of natural sunlight, daylight durations in Old Saybrook fluctuate from 9.6 hours in January to a maximum of 15.1 hours in June, before decreasing to 9.2 hours in December. The town also sees variable conditions in terms of cloud cover, with percentages ranging from 29% in August to 48% in February and December, respectively.
The best time to visit Old Saybrook
For visitors seeking to enjoy warm weather and ample daylight, the peak summer months from June to August serve as the prime time to explore Old Saybrook. During this period, average high temperatures hover between 73°F (22.8°C) and 79.7°F (26.5°C) and sea temperatures range from 69.5°F (20.8°C) to 72.1°F (22.3°C), providing the perfect conditions for beach visits and water activities. Moreover, July enjoys the longest daylight hours reaching 14.8 hours, along with maximum sunshine at 10.5 hours. The consistent weather and lower rainfall in summer season make this the ideal time for outdoor adventures.The worst time to visit Old Saybrook
Given the colder temperatures and increased snowfall, the winter season from December to February is comparatively less favorable for travelers. With temperatures dropping to as low as 25.5°F (-3.6°C) in January, and sea temperatures languishing around 38.8°F (3.8°C) to 41.9°F (5.5°C), these months may not offer the best conditions for outdoor exploration. Additionally, December records the maximum rainfall with 3.66" (93mm) and considerable snowfall, rendering it undesirable to those adverse to colder, wetter climates.Spring weather in Old Saybrook
As winter transitions into spring, Old Saybrook experiences a gradual increase in temperatures with averages ranging from 43.7°F (6.5°C) in March to 64.9°F (18.3°C) in May. The area benefits from extended daylight leading up to 14.5 hours in May and a relative reduction in rainfall from the winter months to between 2.76" (70mm) and 3.23" (82mm). Spring also marks the end of the snowy season, making it a pleasant time to enjoy the blossoming local flora.Summer weather in Old Saybrook
By contrast to spring, summer in Old Saybrook heralds in warm temperatures with the highest average soaring to 79.7°F (26.5°C) in July. It also notes an increased sea temperature, reaching its peak at 72.1°F (22.3°C) in August, inviting visitors to enjoy the coastline. The amount of rainfall, however, escalates to between 2.91" (74mm) and 3.11" (79mm) while the amount of daily sunshine ranges from 8.6 hours to a maximum of 10.5 hours in July.Autumn weather in Old Saybrook
The autumn months in Old Saybrook showcase a gradual cooling trend with temperatures dropping from the peak summer highs to between 72.3°F (22.4°C) and 50.7°F (10.4°C) from September to November. Rainfall varies during this period, with the least precipitation occurring in September at 1.93" (49mm) and the most in November at 3.07" (78mm). Autumn offers a balance between the warm summer and the impending cooler winter months.Winter weather in Old Saybrook
Winter brings a touch of frost to Old Saybrook as average high temperatures descend to between 41.9°F (5.5°C) and 35.2°F (1.8°C) from December to February. Daily sunshine hours are at their lowest with 4.8 hours in December, and the sea temperature cools to its lowest at 38.8°F (3.8°C) in February. Snowfall commonly occurs, offering a scenic, winter wonderland for those who enjoy this cooler season.Weather in January
January sees weather conditions typical of winter in Old Saybrook, Connecticut. Cold temperatures prevail throughout the month, deterring the typical outdoor activities common to the region. High humidity accentuates the chill in the air, with light precipitation dusting the neighborhood in a blanket of frost. Weather in January »Weather in February
As February takes over, weather conditions remain largely consistent with January; cold, often frosty, with a possibility of light snow. The days are still short and gloomy, but the daylight hours start to expand slightly. Winds maintain a cold gust, keeping the environment brisk. Weather in February »Weather in March
Old Saybrook's climate in March offers a transition. A warming trend emerges as the region braces for spring. The land starts to shake off its winter slumber with increasing daylight and sunshine hours. Snowfall reduces significantly, with more rain providing nourishment for the upcoming spring blooms. Weather in March »Weather in April
April ushers in a definitive shift in the weather. Temperatures rise significantly, the landscape transforms with blooming flowers, and residents enjoy extended daylight hours. Rainfall proves frequent as April lives up to the proverb, "April showers bring May flowers." The winds in April soften, with gusts decreasing from March's 16.5mph (26.6km/h) to a milder 15.6mph (25.1km/h). Weather in April »Weather in May
The weather in May in Old Saybrook, Connecticut, is diverse and changeable. May is an excellent month for outdoor activities with long daylight hours and an increasing amount of sunshine. A significant reduction in snowfall and slightly moderate temperature variation is indicative of the arrival of warmer months. Weather in May »Weather in June
June initiates summer in Old Saybrook with warming temperatures, protracted sunshine, and substantial daylight hours. The region's atmosphere becomes vibrant under the bright sun, inviting residents and tourists to bask in the outdoors. Weather in June »Weather in July
In July, Old Saybrook's weather exhibits quintessential summer conditions. Temperatures are generally high, peaking for the year at 79.7°F (26.5°C). Long daylight hours and equally long sunshine hours mark July as the sunniest month in Old Saybrook. Weather in July »Weather in August
Weather in Old Saybrook in August maintains its summer characteristics. High temperatures, low cloud coverage, and substantial daylight hours continue to grace the city. Despite a slight decrease in wind speed, the localized sea breeze keeps overall conditions pleasant. Weather in August »Weather in September
September bridges summer and autumn, showcasing a mix of weather characteristics in Old Saybrook. The summer's warmth lingers, but temperatures start to cool off, signaling the onset of fall. The foliage begins its transformation into vibrant autumn colors, enhanced by the lengthy sunlight hours. Weather in September »Weather in October
October in Old Saybrook demonstrates a pronounced autumn ambiance. The city is renowned for its splendid fall foliage in October, enhanced by moderate rainfall. As temperatures decline, the days shorten, and the winds pick up speed. Weather in October »Weather in November
November underscores the arrival of winter’s chill in Old Saybrook. The transformation of the leaves reaches its peak, and they begin to fall, preparing the trees for the winter bareness. Daylight hours drop significantly compared to October, and the overall weather conditions turn colder. Weather in November »Weather in December
December embodies a typical winter climate in Old Saybrook, Connecticut. The city glows under festive lights, bringing cheer despite the cold weather. With the snowfall increasing, December retains a frosty atmosphere with cooler daylight hours. Weather in December »Updated: Aug 31, 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
Old Saybrook witnesses the coldest weather in January, with temperatures averaging a high of 35.2°F (1.8°C) and a low of 25.5°F (-3.6°C).
Throughout the year, there are 166.2 rainfall days, and 34.8" (884mm) of precipitation is accumulated.
January through May, November and December are months with snowfall in Old Saybrook, Connecticut.
Throughout the year, there are 24.2 snowfall days, and 9.53" (242mm) of snow is accumulated.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
With an average ocean temperature of 38.8°F (3.8°C), February is the month with the coldest seawater.
February and December, with an average of 4.8h of sunshine, are months with the least sunshine.
March is the month with the most snowfall. Snow falls for 4.7 days and accumulates 2.76" (70mm) 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.
The least humid month is April, with an average relative humidity of 73%.
May through July, with an average relative humidity of 78%, are most humid months.
June through October are months without snowfall.
June has the longest days of the year, with an average of 15h and 6min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
In Old Saybrook, July registers the highest temperatures, averaging 79.7°F (26.5°C) at the peak and 66.6°F (19.2°C) at the lowest.
August is the month with the warmest seawater, with an average ocean temperature of 72.1°F (22.3°C).
The month with the most sunshine in Old Saybrook, Connecticut, is August, with an average of 10.6h of sunshine.
September is the month with the least rainfall. Rain falls for 13 days and accumulates 1.93" (49mm) of precipitation.
December is the month with the most rainfall. Rain falls for 13 days and accumulates 3.66" (93mm) of precipitation.
The month with the shortest days is December, with an average of 9h and 18min of daylight.
Average temperature
Old Saybrook, CT
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (35.2°F).
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).
Average pressure
Old Saybrook, CT
- Average pressure in January:
30.03"Hg - Average pressure in February:
30.01"Hg - Average pressure in March:
30.04"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:
29.95"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:
30.08"Hg - Average pressure in December:
30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Old Saybrook, CT
- Average wind speed in January:
10.9mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.6mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
7.1mph - Average wind speed in September:
8.1mph - Average wind speed in October:
9.6mph - Average wind speed in November:
10.1mph - Average wind speed in December:
10.6mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity
Old Saybrook, CT
The months with the highest relative humidity are May, June and July (78%).
The month with the lowest relative humidity is April (73%).
Average rainfall
Old Saybrook, CT
- Average rainfall in January:
2.52" - Average rainfall in February:
2.44" - Average rainfall in March:
2.8" - Average rainfall in April:
3.23" - Average rainfall in May:
2.76" - Average rainfall in June:
2.91"
- Average rainfall in July:
3.11" - Average rainfall in August:
2.91" - Average rainfall in September:
1.93" - Average rainfall in October:
3.46" - Average rainfall in November:
3.07" - Average rainfall in December:
3.66"
The wettest month (with the highest rainfall) is December (3.66").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days
Old Saybrook, CT
- Average rainfall days in January:
9 days - Average rainfall days in February:
10.4 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
15.2 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
16.5 days
- Average rainfall days in July:
17 days - Average rainfall days in August:
16.4 days - Average rainfall days in September:
13 days - Average rainfall days in October:
14.6 days - Average rainfall days in November:
11 days - Average rainfall days in December:
13 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9 days).
Average snowfall
Old Saybrook, CT
- Average snowfall in January:
2.17" - Average snowfall in February:
2.72" - Average snowfall in March:
2.76" - Average snowfall in April:
0.08" - Average snowfall in May:
0.28" - Average snowfall in June:
0"
The month with the highest snowfall is March (2.76").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Old Saybrook, CT
- Average snowfall days in January:
6.3 days - Average snowfall days in February:
7 days - Average snowfall days in March:
4.7 days - Average snowfall days in April:
0.7 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:
0.9 days - Average snowfall days in December:
4.4 days
The month with the highest number of snowfall days is February (7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature
Old Saybrook, CT
The best month for swimming (with the highest average sea temperature) is August (72.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).
Average daylight / Average sunshine
Old Saybrook, CT
- 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 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- 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 18min
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 6min - Average sunshine in February:
4h and 48min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 24min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 36min - Average sunshine in September:
8h and 54min - Average sunshine in October:
6h and 6min - 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 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days
Old Saybrook, CT
- Average sunshine days in January:
16 days - Average sunshine days in February:
12.5 days - Average sunshine days in March:
13.6 days - Average sunshine days in April:
12.7 days - Average sunshine days in May:
12.2 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
11.7 days - Average sunshine days in August:
11.9 days - Average sunshine days in September:
14.2 days - Average sunshine days in October:
14.1 days - Average sunshine days in November:
17.1 days - Average sunshine days in December:
14.8 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is July (11.7 days).
Average UV index
Old Saybrook, 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
Old Saybrook, CT
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility
Old Saybrook, 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).
