July weather forecast
Princeton, IA

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Weather in July

July, like June, in Princeton, Iowa, is another warm summer month, with an average temperature ranging between max 80.4°F (26.9°C) and min 64.2°F (17.9°C).

Temperature

The month of July, characterized by an average high of 80.4°F (26.9°C) and a low of 64.2°F (17.9°C), is recognized as the warmest.

Humidity

In Princeton, the average relative humidity in July is 84%.

Rainfall

In Princeton, Iowa, in July, it is raining for 16.4 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, there are 146.6 rainfall days, and 28.86" (733mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In July, the average length of the day is 14h and 51min.
On the first day of the month, sunrise is at 5:31 am and sunset at 8:39 pm. On the last day of July, sunrise is at 5:55 am and sunset at 8:19 pm CDT.

Sunshine

In July, the average sunshine is 9.9h.

UV index

June and July, with an average maximum UV index of 6, are months with the highest UV index in Princeton. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In July, a daily maximum UV index of 6 leads to the following instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. 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. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
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Frequently asked questions

What are the warmest months in Princeton?

July is the warmest month in Princeton, Iowa, with an average high-temperature of 80.4°F (26.9°C) and an average low-temperature of 64.2°F (17.9°C).

What is the usual temperature for Princeton in July?

Princeton in July has an average high-temperature of 80.4°F (26.9°C) and an average low-temperature of 64.2°F (17.9°C).

What is the average humidity in July in Princeton?

In July, the average relative humidity in Princeton, Iowa, is 84%.

How much does it rain in Princeton in July?

In July, in Princeton, the rain falls for 16.4 days. Throughout July, 2.8" (71mm) of precipitation is accumulated.

When it does not snow in Princeton?

May through September are months without snowfall in Princeton, Iowa.

What is the average length of the day in July in Princeton?

In July, the average day length in Princeton is 14h and 51min.

What time are sunrise and sunset in July in Princeton?

On the first day of July in Princeton, sunrise is at 5:31 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 8:19 pm CDT.

How many hours of sunshine does Princeton have in July?

The average sunshine duration in July in Princeton is 9.9h.

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

June and July, with an average maximum UV index of 6, are months with the highest UV index in Princeton.

What is the UV index intensity in July in Princeton?

In July, the average daily maximum UV index in Princeton is 6. A UV Index value of 6 to 7 symbolizes a high health risk 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
Princeton, IA

Average temperature in July - Princeton, IA
  • Average high temperature in July: 80.4°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (26.8°F).

  • Average low temperature in July: 64.2°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

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Average pressure in July
Princeton, IA

Average pressure in July - Princeton, IA
  • Average pressure in July: 29.96"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in July
Princeton, IA

Average wind speed in July - Princeton, IA
  • Average wind speed in July: 6.6mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in July
Princeton, IA

Average humidity in July - Princeton, IA
  • Average humidity in July: 84%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in July
Princeton, IA

Average rainfall in July - Princeton, IA
  • Average rainfall in July: 2.8"

The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and February (1.34").

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Average rainfall days in July
Princeton, IA

Average rainfall days in July - Princeton, IA
  • Average rainfall days in July: 16.4 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (5.5 days).

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Average snowfall in July
Princeton, IA

Average snowfall in July - Princeton, IA
  • Average snowfall in July: 0"

The month with the highest snowfall is January (4.8").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in July
Princeton, IA

Average snowfall days in July - Princeton, IA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (12.3 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
Princeton, IA

Average daylight in July / Average sunshine in July - Princeton, IA
  • 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 12min).

  • Average sunshine in July: 9h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in July
Princeton, IA

Average sunshine days in July - Princeton, IA
  • Average sunshine days in July: 11.9 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in July
Princeton, IA

Average UV index in July - Princeton, IA
  • Average UV index in July: 6

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

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Average cloud cover in July
Princeton, IA

Average cloud cover in July - Princeton, IA
  • Average cloud cover in July: 32

The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 30).

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Average visibility in July
Princeton, IA

Average visibility in July - Princeton, IA
  • Average visibility in July: 5mi

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

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Princeton, Iowa, USA

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