Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average sea temperature in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
With average high and low temperatures of 82°F (27.8°C) and 69.1°F (20.6°C) respectively, July is Greenwich's warmest month.Heat index
The average heat index in July is appraised at a hot 87.8°F (31°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.Heat index determinations are made taking into account the shade and light air movements. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are particularly relevant to children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Humidity
In July, the average relative humidity is 73%.Rainfall
July is the month with the most rainfall in Greenwich. Rain falls for 18.1 days and accumulates 4.13" (105mm) of precipitation.Snowfall
May through October are months without snowfall in Greenwich.Ocean temperature
In Greenwich, Connecticut, the average seawater temperature in July is 70.9°F (21.6°C).Note: Swimming in water at 70.9°F (21.6°C) is not a pleasing experience for the majority. As the temperature descends from 69.8°F (21°C) to 59°F (15°C), controlling breathing becomes increasingly hard.
Daylight
In July, the average length of the day is 14h and 47min.On the first day of July in Greenwich, sunrise is at 5:26 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:11 pm EDT.
Sunshine
The month with the most sunshine is July, with an average of 10.5h of sunshine.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: In July, a daily maximum UV index of 6 leads to the following instructions:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Caution! The mirror effect of sand and water ups the UV radiation strength.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the hottest in Greenwich?
What are the temperatures in Greenwich in July?
What is the average humidity in July in Greenwich?
What is the wettest month in Greenwich?
How many days does it rain in July in Greenwich?
When it does not snow in Greenwich?
What is the ocean temperature in July in Greenwich?
How many hours of daylight does Greenwich have in July?
What time are sunrise and sunset in July in Greenwich?
What month has the most sunshine in Greenwich?
How long on average sun shines in July in Greenwich?
What is the month with the highest UV index in Greenwich?
What is the UV index reading in July in Greenwich?
Average temperature in July
Greenwich, CT
- Average high temperature in July: 82°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in July: 69.1°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 (26.1°F).
Average pressure in July
Greenwich, CT
- Average pressure in July: 29.96"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 in July
Greenwich, CT
- Average wind speed in July: 6.5mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in July
Greenwich, CT
- Average humidity in July: 73%
The months with the highest relative humidity are February, May and December (75%).
The month with the lowest relative humidity is August (71%).
Average rainfall in July
Greenwich, CT
- Average rainfall in July: 4.13"
The wettest month (with the highest rainfall) is July (4.13").
The driest months (with the least rainfall) are January and February (2.4").
Average rainfall days in July
Greenwich, CT
- Average rainfall days in July: 18.1 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in July
Greenwich, CT
- Average snowfall in July: 0"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Greenwich, CT
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in July
Greenwich, CT
- Average sea temperature in July: 70.9°F
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 in July /
Average sunshine in July
Greenwich, CT
- Average daylight in July: 14h and 5min
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 3min
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 in July
Greenwich, CT
- Average sunshine days in July: 11.1 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in July
Greenwich, 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
Greenwich, CT
- Average cloud cover in July: 32
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 in July
Greenwich, 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).
Greenwich, Connecticut, USA
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