May weather forecastOnslow, IA
May
Weather in May
The last month of the spring, May, is an agreeable month in Onslow, Iowa, with an average temperature fluctuating between 68.4°F (20.2°C) and 51.1°F (10.6°C).Temperature
Onslow in May shows a temperature shift, moving from an average high of a refreshing 56.1°F (13.4°C) in April to a pleasant 68.4°F (20.2°C). Onslow temperatures generally rest at a low of 51.1°F (10.6°C) during the May nights.Humidity
In Onslow, the average relative humidity in May is 80%.Rainfall
The month with the most rainfall is May, when the rain falls for 18.6 days and typically aggregates up to 4.25" (108mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in May in Onslow, Iowa, is 14h and 35min.On the first day of the month, sunrise is at 5:58 am and sunset at 8:03 pm. On the last day of May, in Onslow, sunrise is at 5:30 am and sunset at 8:33 pm CDT.
Sunshine
The average sunshine in May in Onslow is 8.4h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Undertake protective steps - Preventing sun damage is advised. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Onslow, IA
- Average high temperature in May: 68.4°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in May: 51.1°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in May
Onslow, IA
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in May
Onslow, IA
- Average wind speed in May: 9.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in May
Onslow, IA
- Average humidity in May: 80%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Onslow, IA
- Average rainfall in May: 4.25"
The wettest month (with the highest rainfall) is May (4.25").
The driest months (with the least rainfall) are January and February (1.26").
Average rainfall days in May
Onslow, IA
- Average rainfall days in May: 18.6 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in May
Onslow, IA
- Average snowfall in May: 0"
The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Onslow, IA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Onslow, IA
- Average daylight in May: 14h and 36min
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 May: 8h and 24min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Onslow, IA
- Average sunshine days in May: 10.6 days
The month with the most sunshine days is September (17 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in May
Onslow, IA
- Average UV index in May: 5
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 May
Onslow, IA
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in May
Onslow, IA
- Average visibility in May: 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).
