June weather forecast
Denison, IA

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Weather in June

June, the first month of the summer in Denison, is a moderately hot month, with an average temperature ranging between min 62.8°F (17.1°C) and max 79.3°F (26.3°C).

Temperature

The shift into June is marked by a rise in the average high-temperature, moving from May's agreeable 69.4°F (20.8°C) to a warm 79.3°F (26.3°C). In Denison, the average temperature during the nights of June drops to a refreshing 62.8°F (17.1°C).

Humidity

In Denison, the average relative humidity in June is 77%.

Rainfall

In Denison, in June, during 16.5 rainfall days, 3.5" (89mm) of precipitation is typically accumulated. Throughout the year, in Denison, there are 123 rainfall days, and 24.72" (628mm) of precipitation is accumulated.

Snowfall

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

Daylight

June has the longest days of the year, with an average of 15h and 12min of daylight.
On the first day of the month, sunrise is at 5:47 am and sunset at 8:51 pm. On the last day of June, in Denison, sunrise is at 5:49 am and sunset at 9:01 pm CDT.

Sunshine

In June, the average sunshine in Denison is 9.7h.

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 of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum UV index of 6 in June translates into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Denison in June?

In Denison, 79.3°F (26.3°C) is the average high-temperature and 62.8°F (17.1°C) is the average low-temperature during June.

What is the average humidity in June in Denison?

In June, the average relative humidity is 77%.

How many days does it rain in June in Denison?

In Denison, Iowa, in June, during 16.5 rainfall days, 3.5" (89mm) of precipitation is typically accumulated.

When it does not snow in Denison?

In Denison, Iowa, snow does not fall in June through September.

Does it snow in Denison in June?

In June, it doesn't snow. May is the latest month when it typically snows.

When are the longest days in Denison?

June has the longest days of the year in Denison, with an average of 15h and 12min of daylight.

How many hours of daylight does Denison have in June?

The average day length in June in Denison, Iowa, is 15h and 11min.

When are sunrise and sunset in June in Denison?

In June, on the first day of the month, sunrise is at 5:47 am and sunset at 8:51 pm. On the last day of the month, in Denison, Iowa, sunrise is at 5:49 am and sunset at 9:01 pm CDT.

How many hours of sunshine does Denison have in June?

The average sunshine duration in June in Denison, Iowa, is 9.7h.

When is the highest UV index in Denison?

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

What is the UV index reading in June in Denison?

In Denison, Iowa, the average daily maximum UV index in June is 6. A UV Index estimate of 6 to 7 represents a high health threat from 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 June
Denison, IA

Average temperature in June - Denison, IA
  • Average high temperature in June: 79.3°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 June: 62.8°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 June
Denison, IA

Average pressure in June - Denison, IA
  • Average pressure in June: 29.87"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 June
Denison, IA

Average wind speed in June - Denison, IA
  • Average wind speed in June: 8.8mph

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 June
Denison, IA

Average humidity in June - Denison, IA
  • Average humidity in June: 77%

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 June
Denison, IA

Average rainfall in June - Denison, IA
  • Average rainfall in June: 3.5"

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 June
Denison, IA

Average rainfall days in June - Denison, IA
  • Average rainfall days in June: 16.5 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 June
Denison, IA

Average snowfall in June - Denison, IA
  • Average snowfall in June: 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 June
Denison, IA

Average snowfall days in June - Denison, IA
  • Average snowfall days in June: 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 June /
Average sunshine in June
Denison, IA

Average daylight in June / Average sunshine in June - Denison, IA
  • Average daylight in June: 15h and 1min

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 June: 9h and 4min

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 June
Denison, IA

Average sunshine days in June - Denison, IA
  • Average sunshine days in June: 11.9 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 June
Denison, IA

Average UV index in June - Denison, IA
  • Average UV index in June: 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 June
Denison, IA

Average cloud cover in June - Denison, IA
  • Average cloud cover in June: 34

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 June
Denison, IA

Average visibility in June - Denison, IA
  • Average visibility in June: 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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