Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
July is Denison's warmest month, registering average high temperatures of 81.7°F (27.6°C) and lows of 64.8°F (18.2°C).Heat index
The heat index value during July is evaluated at a tropical 87.8°F (31°C). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.Observations indicate that the heat index values are for shady locations with light wind. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Humidity
The average relative humidity in July in Denison is 80%.Rainfall
In Denison, during July, the rain falls for 14 days and regularly aggregates up to 2.2" (56mm) of precipitation. In Denison, Iowa, during the entire year, the rain falls for 123 days and collects up to 24.72" (628mm) of precipitation.Snowfall
June through September are months without snowfall in Denison, Iowa.Daylight
The average length of the day in July in Denison is 14h and 53min.On the first day of July in Denison, sunrise is at 5:50 am and sunset at 9:00 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 8:40 pm CDT.
Sunshine
July has the most sunshine of the year, with an average of 10.3h of sunshine.UV index
June and July, with an average maximum UV index of 6, are months with the highest UV index in Denison. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 6 during July leads to these instructions:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the hottest in Denison?
What are the temperatures in Denison in July?
What is the average humidity in July in Denison?
How much does it rain in Denison in July?
When it does not snow in Denison?
What is the average length of the day in July in Denison?
What time are sunrise and sunset in July in Denison?
What month has the most sunshine in Denison?
How long on average sun shines in July in Denison?
When is the highest UV index in Denison?
How high is the UV index in July in Denison?
Average temperature in July
Denison, IA
- Average high temperature in July: 81.7°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in July: 64.8°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (14°F).
Average pressure in July
Denison, IA
- Average pressure in July: 29.95"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in July
Denison, IA
- Average wind speed in July: 7.4mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in July
Denison, IA
- Average humidity in July: 80%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are April and October (68%).
Average rainfall in July
Denison, IA
- Average rainfall in July: 2.2"
The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in July
Denison, IA
- Average rainfall days in July: 14 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is February (3 days).
Average snowfall in July
Denison, IA
- Average snowfall in July: 0"
The month with the highest snowfall is February (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Denison, IA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Denison, 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: 10h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in July
Denison, IA
- Average sunshine days in July: 14.8 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in July
Denison, 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 February (UV index 1).
Average cloud cover in July
Denison, IA
- Average cloud cover in July: 28
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in July
Denison, IA
- Average visibility in July: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Denison, Iowa, USA
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