July weather forecast
Mystic, CT

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Weather in July

July, the heart of the summer season, brings Mystic's highest temperature, reaching up to 77.9°F (25.5°C). Thus, the city morphs into a bustling summer haven, teeming with tourists exploring the local attractions and stunning coastline. Whether taking a refreshing dip in the sea, with an average water temperature of a warm 68°F (20°C) or basking in the 14.8 hours of daylight, the city promises an abundance of outdoor activities. The piercing sunrays and the low rainfall provide the perfect excuse to indulge in water-based adventurous sports. In essence, Mystic's summer charm peaks during this hot month.

Temperature

July, with its high-temperature average of 77.9°F (25.5°C) and a low-temperature average of 66.9°F (19.4°C), is the warmest month.

Humidity

In July, the average relative humidity is 80%.

Rainfall

In July, the rain falls for 17.1 days. Throughout July, 2.72" (69mm) of precipitation is accumulated. In Mystic, during the entire year, the rain falls for 166.1 days and collects up to 34.09" (866mm) of precipitation.

Snowfall

In Mystic, snow does not fall in May through September.

Ocean temperature

In Mystic, in July, the average water temperature is 68°F (20°C).
Note: For the majority, swimming in 68°F (20°C) does not offer a pleasant experience. Below 69.8°F (21°C), the difficulty in controlling breathing escalates.

Daylight

In Mystic, the average length of the day in July is 14h and 49min.
On the first day of July in Mystic, sunrise is at 5:18 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:05 pm EDT.

Sunshine

In July, the average sunshine in Mystic is 10.5h.

UV index

The months with the highest UV index in Mystic are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In July, an average UV index of 6 transforms into the following instructions:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

What time of the year is the hottest in Mystic?

Mystic's warmest month, July, generally records average temperatures ranging from a high of 77.9°F (25.5°C) to a low of 66.9°F (19.4°C).

What is the average July temperature in Mystic?

Mystic in July has an average high-temperature of 77.9°F (25.5°C) and an average low-temperature of 66.9°F (19.4°C).

What is the average humidity in July in Mystic?

In Mystic, Connecticut, the average relative humidity in July is 80%.

How many days does it rain in July in Mystic?

In Mystic, in July, during 17.1 rainfall days, 2.72" (69mm) of precipitation is typically accumulated.

When it does not snow in Mystic?

May through September are months without snowfall in Mystic.

How cold is the water in July in Mystic?

In July, the average ocean temperature is 68°F (20°C). For most, swimming in 68°F (20°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

How many hours of daylight does Mystic have in July?

In Mystic, Connecticut, the average day length in July is 14h and 49min.

What time are sunrise and sunset in July in Mystic?

In July, on the first day of the month, sunrise is at 5:18 am and sunset at 8:25 pm. On the last day of the month, in Mystic, sunrise is at 5:42 am and sunset at 8:05 pm EDT.

How long on average sun shines in July in Mystic?

In Mystic, the average sunshine duration in July is 10.5h.

What are the months with the highest UV index in Mystic?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Mystic.

What is the UV index intensity in July in Mystic?

The average daily maximum UV index in July in Mystic, Connecticut, is 6. A UV Index of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJulyASOND
Jun
July
Aug
Average high temperature
70.9°F 21.6°C
77.9°F 25.5°C
77.7°F 25.4°C
Average low temperature
59.4°F 15.2°C
66.9°F 19.4°C
66.4°F 19.1°C
Average pressure
29.93" 760mmHg
29.95" 761mmHg
29.98" 761mmHg
Average wind speed
8.6mph 13.8km/h
8.2mph 13.2km/h
8.1mph 13km/h
Average max. wind speed
9.3mph 15km/h
8.8mph 14.2km/h
8.8mph 14.2km/h
Average wind speed gusts
14.3mph 23km/h
13.4mph 21.6km/h
13.1mph 21.1km/h
Average humidity
81%
80%
78%
Average rainfall
2.83" 72mm
2.72" 69mm
2.6" 66mm
Average rainfall days
15.8
17.1
16
Average snowfall
0" 0mm
0" 0mm
0" 0mm
Average snowfall days
0
0
0
Average sea temperature
60.9°F 16.1°C
68°F 20°C
70.3°F 21.3°C
Average daylight
15h 1min
14h 5min
13h 5min
Average sunshine
9h 4min
10h 3min
10h 4min
Average sunshine days
11.7
11.7
12.3
Average UV index
6
6
6
Average cloud cover
37%
31%
28%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in July
Mystic, CT

Average temperature in July - Mystic, CT
  • Average high temperature in July: 77.9°F

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in July: 66.9°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

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Average pressure in July
Mystic, CT

Average pressure in July - Mystic, 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).

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Average wind speed in July
Mystic, CT

Average wind speed in July - Mystic, CT
  • Average wind speed in July: 8.2mph

The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).

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Average humidity in July
Mystic, CT

Average humidity in July - Mystic, CT
  • Average humidity in July: 80%

The month with the highest relative humidity is June (81%).
The months with the lowest relative humidity are January, March, April and November (74%).

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Average rainfall in July
Mystic, CT

Average rainfall in July - Mystic, CT
  • Average rainfall in July: 2.72"

The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (1.73").

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Average rainfall days in July
Mystic, CT

Average rainfall days in July - Mystic, CT
  • Average rainfall days in July: 17.1 days

The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is February (10.1 days).

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Average snowfall in July
Mystic, CT

Average snowfall in July - Mystic, CT
  • Average snowfall in July: 0"

The month with the highest snowfall is March (2.44").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in July
Mystic, CT

Average snowfall days in July - Mystic, CT
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average sea temperature in July
Mystic, CT

Average sea temperature in July - Mystic, CT
  • Average sea temperature in July: 68°F

The best month for swimming (with the highest average sea temperature) is August (70.3°F).
The coldest month (with the lowest average sea temperature) is February (37.9°F).

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Average daylight in July /
Average sunshine in July
Mystic, CT

Average daylight in July / Average sunshine in July - Mystic, 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).

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Average sunshine days in July
Mystic, CT

Average sunshine days in July - Mystic, CT
  • Average sunshine days in July: 11.7 days

The month with the most sunshine days is November (16.5 days).
The months with the least sunshine days are June and July (11.7 days).

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Average UV index in July
Mystic, CT

Average UV index in July - Mystic, 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 and December (UV index 2).

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Average cloud cover in July
Mystic, CT

Average cloud cover in July - Mystic, 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 28).

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Average visibility in July
Mystic, CT

Average visibility in July - Mystic, 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).

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Mystic, Connecticut, USA

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