Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Halfa sees a rise in temperature during May, with average high-temperatures transitioning from a fresh 55°F (12.8°C) in April to a pleasant 68°F (20°C). Throughout May, an average low-temperature of 51.4°F (10.8°C) is expected.Humidity
In May, the average relative humidity in Halfa is 69%.Rainfall
In Halfa, in May, during 16.2 rainfall days, 3.27" (83mm) of precipitation is typically accumulated. In Halfa, during the entire year, the rain falls for 123.7 days and collects up to 23.66" (601mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Halfa aggregates 0.24" (6mm) of snow. In Halfa, during the entire year, snow falls for 48.8 days and aggregates up to 19.76" (502mm) of snow.Daylight
In Halfa, Iowa, the average length of the day in May is 14h and 43min.On the first day of May, sunrise is at 6:09 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:51 pm CDT.
Sunshine
The average sunshine in May is 8.6h.UV index
The average daily maximum UV index in May in Halfa is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Stay sun-safe with clothing that is both closely woven and worn loosely. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Halfa in May?
What is the average humidity in May in Halfa?
How many days does it rain in May in Halfa?
What is the last month it snows in Halfa?
How many hours of daylight does Halfa have in May?
What time are sunrise and sunset in May in Halfa?
How long on average sun shines in May in Halfa?
What is the UV index intensity in May in Halfa?
Average temperature in May
Halfa, IA
- Average high temperature in May: 68°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in May: 51.4°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in May
Halfa, IA
- Average pressure in May: 29.93"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Halfa, IA
- Average wind speed in May: 9.6mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in May
Halfa, IA
- Average humidity in May: 69%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (68%).
Average rainfall in May
Halfa, IA
- Average rainfall in May: 3.27"
The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in May
Halfa, IA
- Average rainfall days in May: 16.2 days
The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in May
Halfa, IA
- Average snowfall in May: 0.24"
The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Halfa, IA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Halfa, IA
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in May
Halfa, IA
- Average sunshine days in May: 13 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in May
Halfa, 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 February (UV index 1).
Average cloud cover in May
Halfa, IA
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are July and September (Cloud cover 31).
Average visibility in May
Halfa, IA
- Average visibility in May: 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).
Halfa, Iowa, USA
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