May weather forecastGraettinger, IA
May
Weather in May
The last month of the spring, May, is a pleasant month in Graettinger, Iowa, with temperature in the range of an average low of 52.2°F (11.2°C) and an average high of 68.2°F (20.1°C).Temperature
The start of May brings a rise in the average high-temperature, moving from a refreshing 55.9°F (13.3°C) in April to a pleasant 68.2°F (20.1°C). Throughout the month of May, Graettinger expects an average low of 52.2°F (11.2°C).Humidity
The average relative humidity in May in Graettinger is 69%.Rainfall
In May, the rain falls for 18.1 days. Throughout May, 3.7" (94mm) of precipitation is accumulated. Throughout the year, there are 138 rainfall days, and 26.77" (680mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Graettinger aggregates 0.2" (5mm) of snow. In Graettinger, during the entire year, snow falls for 51.6 days and aggregates up to 23.03" (585mm) of snow.Daylight
In May, the average length of the day in Graettinger is 14h and 42min.On the first day of May, sunrise is at 6:10 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:51 pm CDT.
Sunshine
In Graettinger, the average sunshine in May is 8.6h.UV index
In Graettinger, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: An average UV index of 5 in May transforms into this advice:
Ensure safety - Recommendations to avert sunburn are presented. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Graettinger, IA
- Average high temperature in May: 68.2°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (23.2°F).
- Average low temperature in May: 52.2°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in May
Graettinger, 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
Graettinger, IA
- Average wind speed in May: 9.6mph
The windiest months (with the highest average wind speed) are January and April (11mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in May
Graettinger, IA
- Average humidity in May: 69%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (68%).
Average rainfall in May
Graettinger, IA
- Average rainfall in May: 3.7"
The wettest month (with the highest rainfall) is June (4.25").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in May
Graettinger, IA
- Average rainfall days in May: 18.1 days
The month with the highest number of rainy days is June (20 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in May
Graettinger, IA
- Average snowfall in May: 0.2"
The month with the highest snowfall is February (5.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Graettinger, IA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Graettinger, IA
- Average daylight in May: 14h and 42min
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 0min).
- Average sunshine in May: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in May
Graettinger, IA
- Average sunshine days in May: 10.5 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (8.1 days).
Average UV index in May
Graettinger, IA
- Average UV index in May: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in May
Graettinger, IA
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and September (Cloud cover 31).
Average visibility in May
Graettinger, 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).
