July weather forecast
Sullivan, ME

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Weather in July

July in Sullivan, Maine, is an agreeable summer month, with temperature in the range of an average low of 58.1°F (14.5°C) and an average high of 73.2°F (22.9°C).

Temperature

July introduces a marginal temperature uplift, with average high-temperatures adjusting from June's comfortable 66°F (18.9°C) to an agreeable 73.2°F (22.9°C). During July, the average low-temperature is recorded at a mild 58.1°F (14.5°C).

Humidity

The average relative humidity in July is 80%.

Rainfall

July is the month with the least rainfall. Rain falls for 13 days and accumulates 1.57" (40mm) of precipitation.

Snowfall

In Sullivan, snow does not fall in June through September.

Ocean temperature

In Sullivan, the average seawater temperature in July is 55°F (12.8°C).
Note: Swimming in 55°F (12.8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In July, the average length of the day is 15h and 9min.
On the first day of July, sunrise is at 4:52 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 7:58 pm EDT.

Sunshine

The average sunshine in July in Sullivan is 9.6h.

UV index

June through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In July, the UV index of 5 transforms into the following advice:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average July temperature?

In Sullivan, 73.2°F (22.9°C) is the average high-temperature and 58.1°F (14.5°C) is the average low-temperature during July.

What is the average humidity in July?

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

What is the driest month?

The month with the least rainfall is July, when the rain falls for 13 days and typically collects 1.57" (40mm) of precipitation.

How many days does it rain in July?

In Sullivan, during July, the rain falls for 13 days and regularly aggregates up to 1.57" (40mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

What is the water temperature in July in Sullivan?

In Sullivan, in July, the average water temperature is 55°F (12.8°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

How many hours of daylight does Sullivan have in July?

In July, the average day length is 15h and 9min.

What time are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 4:52 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 7:58 pm EDT.

How long on average sun shines in July?

In Sullivan, the average sunshine duration in July is 9.6h.

What is the month with the highest UV index in Sullivan?

The months with the highest UV index are June through August, with an average maximum UV index of 5.

What is the UV index intensity in July?

The average daily maximum UV index in July in Sullivan is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Sullivan, ME

Average temperature in July - Sullivan, ME
  • Average high temperature in July: 73.2°F

The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in July: 58.1°F

The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).

Average pressure in July
Sullivan, ME

Average pressure in July - Sullivan, ME
  • Average pressure in July: 29.93"Hg

The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in July
Sullivan, ME

Average wind speed in July - Sullivan, ME
  • Average wind speed in July: 6.3mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

Average humidity in July
Sullivan, ME

Average humidity in July - Sullivan, ME
  • Average humidity in July: 80%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is November (76%).

Average rainfall in July
Sullivan, ME

Average rainfall in July - Sullivan, ME
  • Average rainfall in July: 1.57"

The wettest month (with the highest rainfall) is December (3.94").
The driest month (with the least rainfall) is July (1.57").

Average rainfall days in July
Sullivan, ME

Average rainfall days in July - Sullivan, ME
  • Average rainfall days in July: 13 days

The month with the highest number of rainy days is April (15.5 days).
The month with the least rainy days is February (7.5 days).

Average snowfall in July
Sullivan, ME

Average snowfall in July - Sullivan, ME
  • Average snowfall in July: 0"

The month with the highest snowfall is February (5.75").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in July
Sullivan, ME

Average snowfall days in July - Sullivan, ME
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in July
Sullivan, ME

Average sea temperature in July - Sullivan, ME
  • Average sea temperature in July: 55°F

The best month for swimming (with the highest average sea temperature) is August (56.8°F).
The coldest month (with the lowest average sea temperature) is March (38°F).

Average daylight in July /
Average sunshine in July
Sullivan, ME

Average daylight in July / Average sunshine in July - Sullivan, ME
  • Average daylight in July: 15h and 1min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in July: 9h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).

Average sunshine days in July
Sullivan, ME

Average sunshine days in July - Sullivan, ME
  • Average sunshine days in July: 16.6 days

The month with the most sunshine days is August (18.7 days).
The month with the least sunshine days is April (11.2 days).

Average UV index in July
Sullivan, ME

Average UV index in July - Sullivan, ME
  • Average UV index in July: 5

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in July
Sullivan, ME

Average cloud cover in July - Sullivan, ME
  • Average cloud cover in July: 39

The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 35).

Average visibility in July
Sullivan, ME

Average visibility in July - Sullivan, ME
  • Average visibility in July: 5mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

Sullivan, Maine, USA

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