July weather forecast
Lancaster, MA

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Weather in July

July, like June, in Lancaster, Massachusetts, is a moderately hot summer month, with an average temperature fluctuating between 81.9°F (27.7°C) and 62.2°F (16.8°C).

Temperature

July, recording an average high temperature of 81.9°F (27.7°C) and a low temperature of 62.2°F (16.8°C), is Lancaster's warmest month.

Heat index

July's heat index is computed to be a hot 87.8°F (31°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Heat index determinations are made taking into account the shade and light air movements. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.

Humidity

The average relative humidity in July in Lancaster, Massachusetts, is 75%.

Rainfall

In Lancaster, during July, the rain falls for 16 days and regularly aggregates up to 2.32" (59mm) of precipitation. In Lancaster, during the entire year, the rain falls for 150.4 days and collects up to 28.86" (733mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Lancaster, the average length of the day in July is 14h and 56min.
On the first day of the month, sunrise is at 5:13 am and sunset at 8:27 pm. On the last day of July, in Lancaster, sunrise is at 5:38 am and sunset at 8:07 pm EDT.

Sunshine

The average sunshine in July in Lancaster is 10.1h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: During July, 6 as the daily maximum UV index converts into the following advice:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
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Frequently asked questions

What month is the hottest in Lancaster?

Lancaster's warmest weather arrives in July, when temperatures average a high of 81.9°F (27.7°C) and a low of 62.2°F (16.8°C).

What are the temperatures in Lancaster in July?

The high-temperature during July is 81.9°F (27.7°C) and the low-temperature is 62.2°F (16.8°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 87.8°F (31°C).

What is the average humidity in July in Lancaster?

The average relative humidity in July in Lancaster is 75%.

How much does it rain in Lancaster in July?

In July, the rain falls for 16 days. Throughout July, 2.32" (59mm) of precipitation is accumulated.

When it does not snow in Lancaster?

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

How many hours of daylight does Lancaster have in July?

In Lancaster, the average day length in July is 14h and 56min.

When is the sunrise / sunset in July in Lancaster?

On the first day of July in Lancaster, Massachusetts, sunrise is at 5:13 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:07 pm EDT.

How long on average sun shines in July in Lancaster?

The average sunshine duration in July is 10.1h.

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

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 in Lancaster?

In July, the average daily maximum UV index in Lancaster is 6. A UV Index estimate of 6 to 7 represents a high health 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
Lancaster, MA

Average temperature in July - Lancaster, MA
  • Average high temperature in July: 81.9°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in July: 62.2°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure in July
Lancaster, MA

Average pressure in July - Lancaster, MA
  • Average pressure in July: 29.94"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in July
Lancaster, MA

Average wind speed in July - Lancaster, MA
  • Average wind speed in July: 5.6mph

The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in July
Lancaster, MA

Average humidity in July - Lancaster, MA
  • Average humidity in July: 75%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in July
Lancaster, MA

Average rainfall in July - Lancaster, MA
  • Average rainfall in July: 2.32"

The wettest month (with the highest rainfall) is December (2.91").
The driest month (with the least rainfall) is September (1.57").

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Average rainfall days in July
Lancaster, MA

Average rainfall days in July - Lancaster, MA
  • Average rainfall days in July: 16 days

The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is February (7.3 days).

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Average snowfall in July
Lancaster, MA

Average snowfall in July - Lancaster, MA
  • Average snowfall in July: 0"

The month with the highest snowfall is February (6.1").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Lancaster, MA

Average snowfall days in July - Lancaster, MA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Lancaster, MA

Average daylight in July / Average sunshine in July - Lancaster, MA
  • Average daylight in July: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in July: 10h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in July
Lancaster, MA

Average sunshine days in July - Lancaster, MA
  • Average sunshine days in July: 12.8 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is July (12.8 days).

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Average UV index in July
Lancaster, MA

Average UV index in July - Lancaster, MA
  • 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).

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Average cloud cover in July
Lancaster, MA

Average cloud cover in July - Lancaster, MA
  • Average cloud cover in July: 36

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in July
Lancaster, MA

Average visibility in July - Lancaster, MA
  • Average visibility in July: 5mi

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

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Lancaster, Massachusetts, USA

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