July weather forecast
Plymouth, IL

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Weather in July

July, like June, in Plymouth, Illinois, is another warm summer month, with an average temperature varying between 82.6°F (28.1°C) and 66.2°F (19°C).

Temperature

Plymouth's warmest weather arrives in July, when temperatures average a high of 82.6°F (28.1°C) and a low of 66.2°F (19°C).

Heat index

July's heat index is calculated to be a hot 91.4°F (33°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. 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

July is the most humid month, with an average relative humidity of 83%.

Rainfall

In Plymouth, in July, during 10 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. Throughout the year, there are 94.4 rainfall days, and 7.76" (197mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Plymouth, the average length of the day in July is 14h and 43min.
On the first day of July, sunrise is at 5:38 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:18 pm CDT.

Sunshine

June and July, with an average of 10.2h of sunshine, are months with the most sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In July, the maximum UV index of 6 transforms into these recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun.

Frequently asked questions

What time of the year is the hottest?

In Plymouth, the peak temperatures are generally noted in July, averaging a high of 82.6°F (28.1°C) and a low of 66.2°F (19°C).

How hot does it get in July?

In Plymouth, 82.6°F (28.1°C) is the average high-temperature and 66.2°F (19°C) is the average low-temperature during July. The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is calculated to be 91.4°F (33°C).

What is the most humid month?

The most humid month is July, with an average relative humidity of 83%.

What is the average humidity in July?

In Plymouth, the average relative humidity in July is 83%.

How many days does it rain in July?

In Plymouth, Illinois, in July, during 10 rainfall days, 0.67" (17mm) of precipitation is typically accumulated.

When it does not snow?

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

What is the average length of the day in July?

In July, the average day length is 14h and 43min.

When is the sunrise / sunset in July?

In July, on the first day of the month, sunrise is at 5:38 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:18 pm CDT.

What are the months with the most sunshine?

The months with the most sunshine are June and July, with an average of 10.2h of sunshine.

How many hours of sunshine does Plymouth have in July?

In July, the average sunshine duration is 10.2h.

What is the month with the highest UV index?

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

How high is the UV index in July?

The average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high health risk from 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
Plymouth, IL

Average temperature in July - Plymouth, IL
  • Average high temperature in July: 82.6°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (31.1°F).

  • Average low temperature in July: 66.2°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (19°F).

Average pressure in July
Plymouth, IL

Average pressure in July - Plymouth, IL
  • Average pressure in July: 29.96"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in July
Plymouth, IL

Average wind speed in July - Plymouth, IL
  • Average wind speed in July: 6.6mph

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in July
Plymouth, IL

Average humidity in July - Plymouth, IL
  • Average humidity in July: 83%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

Average rainfall in July
Plymouth, IL

Average rainfall in July - Plymouth, IL
  • Average rainfall in July: 0.67"

The wettest month (with the highest rainfall) is May (1.1").
The driest month (with the least rainfall) is December (0.35").

Average rainfall days in July
Plymouth, IL

Average rainfall days in July - Plymouth, IL
  • Average rainfall days in July: 10 days

The month with the highest number of rainy days is May (12.3 days).
The month with the least rainy days is January (3.3 days).

Average snowfall in July
Plymouth, IL

Average snowfall in July - Plymouth, IL
  • Average snowfall in July: 0"

The month with the highest snowfall is January (0.67").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Plymouth, IL

Average snowfall days in July - Plymouth, IL
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in July /
Average sunshine in July
Plymouth, IL

Average daylight in July / Average sunshine in July - Plymouth, IL
  • Average daylight in July: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in July: 10h and 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in July
Plymouth, IL

Average sunshine days in July - Plymouth, IL
  • Average sunshine days in July: 15.3 days

The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is June (13.9 days).

Average UV index in July
Plymouth, IL

Average UV index in July - Plymouth, IL
  • Average UV index in July: 6

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in July
Plymouth, IL

Average cloud cover in July - Plymouth, IL
  • Average cloud cover in July: 30

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in July
Plymouth, IL

Average visibility in July - Plymouth, IL
  • 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).

Plymouth, Illinois, USA

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