July weather forecast
River Junction, IA

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Weather in July

July, like June, in River Junction, Iowa, is another warm summer month, with an average temperature ranging between min 64.6°F (18.1°C) and max 81.5°F (27.5°C).

Temperature

With average high and low temperatures of 81.5°F (27.5°C) and 64.6°F (18.1°C) respectively, July is River Junction's warmest month.

Heat index

The heat index value during July is computed to be a tropical 87.8°F (31°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.
In the scope of the heat index, its values resonate with shade and light wind conditions. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.

Humidity

January and July, with an average relative humidity of 83%, are the most humid months in River Junction.

Rainfall

In River Junction, in July, it is raining for 15.2 days, with typically 3.03" (77mm) of accumulated precipitation. Throughout the year, in River Junction, there are 140.4 rainfall days, and 29.57" (751mm) of precipitation is accumulated.

Snowfall

In River Junction, snow does not fall in May through September.

Daylight

In River Junction, the average length of the day in July is 14h and 50min.
On the first day of July in River Junction, sunrise is at 5:36 am and sunset at 8:43 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:24 pm CDT.

Sunshine

With an average of 10h of sunshine, July has the most sunshine of the year.

UV index

June and July, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: In July, a daily maximum UV index of 6 leads to the following instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What is the hottest time of year in River Junction?

The month of July sees the average highest temperatures in River Junction, reaching 81.5°F (27.5°C) at the peak and 64.6°F (18.1°C) at the low.

What is the average July temperature in River Junction?

River Junction in July has an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 64.6°F (18.1°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 87.8°F (31°C).

What are the most humid months in River Junction?

The months with the highest humidity in River Junction are January and July, with an average relative humidity of 83%.

What is the average humidity in July in River Junction?

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

How much does it rain in River Junction in July?

In River Junction, in July, during 15.2 rainfall days, 3.03" (77mm) of precipitation is typically accumulated.

When it does not snow in River Junction?

In River Junction, Iowa, snow does not fall in May through September.

What is the average length of the day in July in River Junction?

The average day length in July is 14h and 50min.

When is the sunrise / sunset in July in River Junction?

In July, on the first day of the month, sunrise is at 5:36 am and sunset at 8:43 pm. On the last day of the month, in River Junction, Iowa, sunrise is at 6:00 am and sunset at 8:24 pm CDT.

What month has the most sunshine in River Junction?

July has the most sunshine of the year, with an average of 10h of sunshine.

How many hours of sunshine does River Junction have in July?

The average sunshine duration in July in River Junction is 10h.

What is the month with the highest UV index in River Junction?

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

How high is the UV index in July in River Junction?

In July, the average daily maximum UV index in River Junction, Iowa, is 6. A UV Index reading of 6 to 7 represents 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
River Junction, IA

Average temperature in July - River Junction, IA
  • Average high temperature in July: 81.5°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in July: 64.6°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

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Average pressure in July
River Junction, IA

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in July
River Junction, IA

Average wind speed in July - River Junction, IA
  • Average wind speed in July: 6.9mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).

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Average humidity in July
River Junction, IA

Average humidity in July - River Junction, IA
  • Average humidity in July: 83%

The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in July
River Junction, IA

Average rainfall in July - River Junction, IA
  • Average rainfall in July: 3.03"

The wettest month (with the highest rainfall) is May (4.69").
The driest months (with the least rainfall) are January and February (1.34").

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Average rainfall days in July
River Junction, IA

Average rainfall days in July - River Junction, IA
  • Average rainfall days in July: 15.2 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (5 days).

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Average snowfall in July
River Junction, IA

Average snowfall in July - River Junction, IA
  • Average snowfall in July: 0"

The month with the highest snowfall is January (5.28").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in July
River Junction, IA

Average snowfall days in July - River Junction, IA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (10.9 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
River Junction, IA

Average daylight in July / Average sunshine in July - River Junction, IA
  • Average daylight in July: 14h and 5min

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

  • Average sunshine in July: 10h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in July
River Junction, IA

Average sunshine days in July - River Junction, IA
  • Average sunshine days in July: 12.2 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10 days).

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Average UV index in July
River Junction, IA

Average UV index in July - River Junction, 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
River Junction, IA

Average cloud cover in July - River Junction, IA
  • Average cloud cover in July: 32

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in July
River Junction, IA

Average visibility in July - River Junction, IA
  • Average visibility in July: 5mi

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

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River Junction, Iowa, USA

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