July weather forecast
Williamstown, MO

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Weather in July

July, like June, in Williamstown, Missouri, is a moderately hot summer month, with temperature in the range of an average low of 66.6°F (19.2°C) and an average high of 83.3°F (28.5°C).

Temperature

Temperature records mark July as the warmest month, with highs averaging 83.3°F (28.5°C) and lows at 66.6°F (19.2°C).

Heat index

For most parts of July, the heat index is computed to be a hot 93.2°F (34°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.

Humidity

June and July, with an average relative humidity of 81%, are the most humid months in Williamstown.

Rainfall

In Williamstown, in July, during 14.6 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. In Williamstown, during the entire year, the rain falls for 134.4 days and collects up to 27.44" (697mm) of precipitation.

Snowfall

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

Daylight

In Williamstown, the average length of the day in July is 14h and 42min.
On the first day of the month, sunrise is at 5:41 am and sunset at 8:40 pm. On the last day of July, in Williamstown, sunrise is at 6:04 am and sunset at 8:22 pm CDT.

Sunshine

July has the most sunshine of the year, with an average of 10.4h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Williamstown. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 6 during July translates into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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Frequently asked questions

What is the hottest time of year in Williamstown?

July is the warmest month in Williamstown, Missouri, with an average high-temperature of 83.3°F (28.5°C) and an average low-temperature of 66.6°F (19.2°C).

How hot is it in Williamstown in July?

The average high-temperature and low-temperature during July are 83.3°F (28.5°C) and 66.6°F (19.2°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, in July is computed to be 93.2°F (34°C).

What is the most humid month in Williamstown?

The months with the highest humidity are June and July, with an average relative humidity of 81%.

What is the average humidity in July in Williamstown?

The average relative humidity in July in Williamstown is 81%.

How much does it rain in Williamstown in July?

In Williamstown, Missouri, in July, it is raining for 14.6 days, with typically 2.68" (68mm) of accumulated precipitation.

When it does not snow in Williamstown?

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

How many hours of daylight does Williamstown have in July?

In Williamstown, Missouri, the average day length in July is 14h and 42min.

When are sunrise and sunset in July in Williamstown?

On the first day of July in Williamstown, Missouri, sunrise is at 5:41 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 6:04 am and sunset at 8:22 pm CDT.

What month has the most sunshine in Williamstown?

With an average of 10.4h of sunshine, July has the most sunshine of the year in Williamstown, Missouri.

How long on average sun shines in July in Williamstown?

The average sunshine duration in July is 10.4h.

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

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

What is the UV index reading in July in Williamstown?

In July, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.
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
Williamstown, MO

Average temperature in July - Williamstown, MO
  • Average high temperature in July: 83.3°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in July: 66.6°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in July
Williamstown, MO

Average pressure in July - Williamstown, MO
  • 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).

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Average wind speed in July
Williamstown, MO

Average wind speed in July - Williamstown, MO
  • Average wind speed in July: 6.7mph

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 (6.7mph).

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Average humidity in July
Williamstown, MO

Average humidity in July - Williamstown, MO
  • Average humidity in July: 81%

The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in July
Williamstown, MO

Average rainfall in July - Williamstown, MO
  • Average rainfall in July: 2.68"

The wettest month (with the highest rainfall) is May (3.7").
The driest month (with the least rainfall) is January (1.22").

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Average rainfall days in July
Williamstown, MO

Average rainfall days in July - Williamstown, MO
  • Average rainfall days in July: 14.6 days

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is February (4.7 days).

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Average snowfall in July
Williamstown, MO

Average snowfall in July - Williamstown, MO
  • Average snowfall in July: 0"

The month with the highest snowfall is January (3.98").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in July
Williamstown, MO

Average snowfall days in July - Williamstown, MO
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (7.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Williamstown, MO

Average daylight in July / Average sunshine in July - Williamstown, MO
  • 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

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Average sunshine days in July
Williamstown, MO

Average sunshine days in July - Williamstown, MO
  • Average sunshine days in July: 13.4 days

The month with the most sunshine days is December (19.5 days).
The month with the least sunshine days is June (10.9 days).

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Average UV index in July
Williamstown, MO

Average UV index in July - Williamstown, MO
  • 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, November and December (UV index 2).

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Average cloud cover in July
Williamstown, MO

Average cloud cover in July - Williamstown, MO
  • Average cloud cover in July: 28

The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in July
Williamstown, MO

Average visibility in July - Williamstown, MO
  • 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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Williamstown, Missouri, USA

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