July weather forecastOld Saybrook, CT
July
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. The skies are mostly clear, with the lowest average cloud coverage of the year, enhancing the summery feel. Meanwhile, sea temperatures improve considerably, attracting beach-goers and water sport enthusiasts to the shore.Temperature
July is the month that records the highest temperatures, with averages ranging from a high of 79.7°F (26.5°C) to a low of 66.6°F (19.2°C).Humidity
May through July, with an average relative humidity of 78%, are the most humid months.Rainfall
In Old Saybrook, in July, it is raining for 17 days, with typically 3.11" (79mm) of accumulated precipitation. In Old Saybrook, during the entire year, the rain falls for 166.2 days and collects up to 34.8" (884mm) of precipitation.Snowfall
In Old Saybrook, Connecticut, snow does not fall in June through October.Ocean temperature
In July, the average ocean temperature is 69.4°F (20.8°C).Note: Swimming in water of 69.4°F (20.8°C) is not enjoyable for the majority of individuals. Breathing control becomes increasingly challenging as the temperature dips from 69.8°F (21°C) to 59°F (15°C).
Daylight
In July, the average length of the day is 14h and 49min.On the first day of the month, sunrise is at 5:20 am and sunset at 8:26 pm. On the last day of July, sunrise is at 5:44 am and sunset at 8:07 pm EDT.
Sunshine
In July, the average sunshine is 10.5h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 6 in July interprets into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Old Saybrook, CT
- Average high temperature in July: 79.7°F
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).
- Average low temperature in July: 66.6°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 in July
Old Saybrook, CT
- Average pressure in July: 29.95"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 in July
Old Saybrook, CT
- Average wind speed in July: 7.1mph
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 in July
Old Saybrook, CT
- Average humidity in July: 78%
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 in July
Old Saybrook, CT
- Average rainfall in July: 3.11"
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 in July
Old Saybrook, CT
- Average rainfall days in July: 17 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 in July
Old Saybrook, CT
- Average snowfall in July: 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 in July
Old Saybrook, CT
- Average snowfall days in July: 0 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 in July
Old Saybrook, CT
- Average sea temperature in July: 69.5°F
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 in July /
Average sunshine in July
Old Saybrook, CT
- Average daylight in July: 14h and 48min
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 July: 10h and 30min
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 in July
Old Saybrook, CT
- Average sunshine days in July: 11.7 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 in July
Old Saybrook, CT
- Average UV index in July: 6
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 in July
Old Saybrook, CT
- Average cloud cover in July: 32
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 in July
Old Saybrook, CT
- Average visibility in July: 6mi
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).





