June weather forecast
Denison, IA

Weather in June

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

Temperature

In Denison, the average high-temperature in June rises, from a pleasant 69.4°F (20.8°C) in May, to a moderately hot 79.3°F (26.3°C). The average low-temperature, in June, is 62.8°F (17.1°C).

Humidity

In Denison, the average relative humidity is 77%.

Rainfall

In Denison, during June, the rain falls for 16.5 days and regularly aggregates up to 3.5" (89mm) 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.

Daylight

The month with the longest days is June, with an average of 15.2h of daylight.

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. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In June, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in June in Denison?

The average relative humidity in June in Denison, Iowa, is 77%.

How much does it rain in Denison in June?

In June, the rain falls for 16.5 days. Throughout June, 3.5" (89mm) of precipitation is accumulated.

When it does not snow in Denison?

In Denison snow does not fall in June through September.

Does it snow in Denison in June?

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

When are the longest days in Denison?

The month with the longest days in Denison is June, with an average of 15.2h of daylight.

How many hours of daylight does Denison have in June?

In Denison, the average length of the day in June is 15.2h.

How long on average sun shines in June in Denison?

The average sunshine in June in Denison is 9.7h.

When is the highest UV index in Denison?

Months with the highest UV index in Denison, Iowa, are June and July, with an average maximum UV index of 6.

What is the UV index reading in June in Denison?

In Denison, the average daily maximum UV index in June is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to the Sun's UV rays.

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).

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Average pressure in June
Denison, IA

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

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.87").

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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).

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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%).
Months with the lowest relative humidity are April and October (68%).

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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").

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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).

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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").
Months with the least snowfall are June, July, August and September (0").

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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).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in June /
Average sunshine in June
Denison, IA

Average daylight in June / Average sunshine in June - Denison, IA
  • Average daylight in June: 15.2h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in June: 9.7h

The month with the most sunshine is July (Average sunshine: 10.3h).
The month with the least sunshine is January (Average sunshine: 4.2h).

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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).

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Average UV index in June
Denison, IA

Average UV index in June - Denison, IA
  • Average UV index in June: 6

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).

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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).

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Average visibility in June
Denison, IA

Average visibility in June - Denison, IA
  • Average visibility in June: 6mi

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).

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