May weather forecastLuther, IA
May
Weather in May
The last month of the spring, May, is an agreeable month in Luther, Iowa, with temperature in the range of an average high of 69.4°F (20.8°C) and an average low of 52.9°F (11.6°C).Temperature
Luther's May weather brings a rise in high-temperatures, moving from a mild 58.6°F (14.8°C) in April to an agreeable 69.4°F (20.8°C). During May nights, Luther witnesses a consistent average temperature of 52.9°F (11.6°C).Humidity
In May, the average relative humidity is 76%.Rainfall
The month with the most rainfall is May, when the rain falls for 17.5 days and typically aggregates up to 4.13" (105mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Luther aggregates 0.28" (7mm) of snow. In Luther, during the entire year, snow falls for 36.3 days and aggregates up to 13.27" (337mm) of snow.Daylight
The average length of the day in May is 14h and 35min.On the first day of May, sunrise is at 6:10 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:43 pm CDT.
Sunshine
In Luther, Iowa, the average sunshine in May is 8.6h.UV index
In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The UV index of 5 during May leads to these advisories:
Undertake protective steps - Preventing sun damage is advised. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Luther, IA
- Average high temperature in May: 69.4°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in May: 52.9°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 (13.8°F).
Average pressure in May
Luther, IA
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Luther, IA
- Average wind speed in May: 8.9mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in May
Luther, IA
- Average humidity in May: 76%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Luther, IA
- Average rainfall in May: 4.13"
The wettest month (with the highest rainfall) is May (4.13").
The driest months (with the least rainfall) are January and February (0.87").
Average rainfall days in May
Luther, IA
- Average rainfall days in May: 17.5 days
The months with the highest number of rainy days are May and June (17.5 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in May
Luther, IA
- Average snowfall in May: 0.28"
The month with the highest snowfall is January (4.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Luther, IA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Luther, 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 36min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in May
Luther, IA
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is December (19 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in May
Luther, 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, February, October, November and December (UV index 2).
Average cloud cover in May
Luther, IA
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in May
Luther, IA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
