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
July is the month when Groton, Connecticut, experiences its warmest temperatures, averaging a high of 78.6°F (25.9°C) and a low of 66.7°F (19.3°C).Humidity
The average relative humidity in July is 79%.Rainfall
In July, the rain falls for 15.8 days. Throughout July, 2.44" (62mm) of precipitation is accumulated. In Groton, during the entire year, the rain falls for 159.8 days and collects up to 33.07" (840mm) of precipitation.Snowfall
In Groton, snow does not fall in May through October.Ocean temperature
In July, the average ocean temperature is 69.4°F (20.8°C).Note: For most, swimming in 69.4°F (20.8°C) is not a pleasant activity. Breathing becomes increasingly challenging as water temperature descends from 69.8°F (21°C) to 59°F (15°C).
Daylight
The average length of the day in July is 14h and 49min.On the first day of July, sunrise is at 5:19 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:06 pm EDT.
Sunshine
In Groton, the average sunshine in July is 10.5h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: In July, an average UV index of 6 transforms into the following instructions:
Resist overexposure. Safeguarding from solar damage is indispensable. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the hottest time of year?
What are July temperatures?
What is the average humidity in July in Groton?
How much does it rain in July?
When it does not snow?
What is the ocean temperature in July?
How many hours of daylight does Groton have in July?
What time are sunrise and sunset in July?
How long on average sun shines in July?
What are the months with the highest UV index?
What is the UV index intensity in July?
Average temperature in July
Groton, CT
- Average high temperature in July: 78.6°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in July: 66.7°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in July
Groton, 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
Groton, CT
- Average wind speed in July: 7.8mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).
Average humidity in July
Groton, CT
- Average humidity in July: 79%
The month with the highest relative humidity is June (80%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in July
Groton, CT
- Average rainfall in July: 2.44"
The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in July
Groton, CT
- Average rainfall days in July: 15.8 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (9.5 days).
Average snowfall in July
Groton, CT
- Average snowfall in July: 0"
The month with the highest snowfall is March (2.56").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Groton, CT
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in July
Groton, 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
Groton, 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 12min).
- Average sunshine in July: 10h and 3min
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 54min).
Average sunshine days in July
Groton, CT
- Average sunshine days in July: 13.4 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is February (12.5 days).
Average UV index in July
Groton, 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
Groton, CT
- Average cloud cover in July: 31
The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in July
Groton, 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).
Groton, Connecticut, USA
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