June weather forecastDuncan, IA
June
Weather in June
June, the first month of the summer in Duncan, is a moderately hot month, with an average temperature varying between 61.3°F (16.3°C) and 77.5°F (25.3°C).Temperature
As June arrives, Duncan's weather shows an increase in high-temperatures, moving from May's pleasant 68°F (20°C) to a moderately hot 77.5°F (25.3°C). June brings with it a nighttime average temperature of 61.3°F (16.3°C).Humidity
In Duncan, Iowa, the average relative humidity in June is 78%.Rainfall
June is the month with the most rainfall. Rain falls for 17.8 days and accumulates 3.82" (97mm) of precipitation.Snowfall
In Duncan, snow does not fall in June through September.Daylight
June has the longest days of the year, with an average of 15h and 18min of daylight.On the first day of the month, sunrise is at 5:37 am and sunset at 8:48 pm. On the last day of June, sunrise is at 5:39 am and sunset at 8:58 pm CDT.
Sunshine
In Duncan, the average sunshine in June is 9.4h.UV index
The months with the highest UV index are June and July, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 6 in June interprets into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Duncan, IA
- Average high temperature in June: 77.5°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in June: 61.3°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (10.4°F).
Average pressure in June
Duncan, IA
- Average pressure in June: 29.88"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in June
Duncan, IA
- Average wind speed in June: 8.5mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in June
Duncan, IA
- Average humidity in June: 78%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (69%).
Average rainfall in June
Duncan, IA
- Average rainfall in June: 3.82"
The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in June
Duncan, IA
- Average rainfall days in June: 17.8 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in June
Duncan, IA
- Average snowfall in June: 0"
The month with the highest snowfall is February (5.71").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in June
Duncan, IA
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in June /
Average sunshine in June
Duncan, IA
- Average daylight in June: 15h and 18min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in June: 9h and 24min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in June
Duncan, IA
- Average sunshine days in June: 10.4 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in June
Duncan, IA
- Average UV index in June: 6
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in June
Duncan, IA
- Average cloud cover in June: 37
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in June
Duncan, IA
- Average visibility in June: 6mi
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).
