June weather forecastPortsmouth, IA
June
Weather in June
June, the first month of the summer in Portsmouth, is a warm month, with an average temperature ranging between max 79.3°F (26.3°C) and min 63°F (17.2°C).Temperature
An upsurge in temperatures occurs as May gives way to June, with average highs shifting from an agreeable 69.4°F (20.8°C) to a moderately hot 79.3°F (26.3°C). During June, Portsmouth consistently records a temperature low averaging a comfortable 63°F (17.2°C).Humidity
In Portsmouth, the average relative humidity in June is 78%.Rainfall
June is the month with the most rainfall. Rain falls for 16.1 days and accumulates 2.64" (67mm) of precipitation.Snowfall
In Portsmouth, snow does not fall in June through September.Daylight
With an average of 15h and 6min of daylight, June has the longest days of the year.On the first day of June, sunrise is at 5:49 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 9:00 pm CDT.
Sunshine
In Portsmouth, Iowa, the average sunshine in June is 9.9h.UV index
June through August, 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 vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index, 6 during June, leads to the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Portsmouth, IA
- Average high temperature in June: 79.3°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in June: 63°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).
Average pressure in June
Portsmouth, 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
Portsmouth, IA
- Average wind speed in June: 8.5mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in June
Portsmouth, IA
- Average humidity in June: 78%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (68%).
Average rainfall in June
Portsmouth, IA
- Average rainfall in June: 2.64"
The wettest month (with the highest rainfall) is June (2.64").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in June
Portsmouth, IA
- Average rainfall days in June: 16.1 days
The month with the highest number of rainy days is June (16.1 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in June
Portsmouth, IA
- Average snowfall in June: 0"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in June
Portsmouth, IA
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in June /
Average sunshine in June
Portsmouth, IA
- Average daylight in June: 15h and 6min
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 June: 9h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in June
Portsmouth, IA
- Average sunshine days in June: 11.4 days
The month with the most sunshine days is December (21.6 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in June
Portsmouth, IA
- Average UV index in June: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in June
Portsmouth, IA
- Average cloud cover in June: 32
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in June
Portsmouth, IA
- Average visibility in June: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
