May weather forecastSpencer, IA
May
Weather in May
The weather of May in Spencer delivers an intense version of spring. The city experiences the highest rainfall of the year with rainfall inches being 0.08" (2mm), adding to the freshness. Nature performs its best as blooming flowers spread their vibrancy around, and trees wear a thicker green coat. This period opens avenues for various activities such as digging into delicious barbeques and engaging in pleasant evening strolls. May is therefore a season of rejuvenation and an upbeat mood, as summer is predicted just around the corner.Temperature
Spencer's weather shows a temperature rise with the arrival of May, moving from a refreshing 55.6°F (13.1°C) in April to a comfortable 67.8°F (19.9°C). During the month of May, Spencer's nighttime temperature lowers to an average of 51.4°F (10.8°C).Humidity
In Spencer, the average relative humidity in May is 69%.Rainfall
In Spencer, in May, during 15.5 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. In Spencer, during the entire year, the rain falls for 112.3 days and collects up to 15.31" (389mm) 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, Spencer aggregates 0.12" (3mm) of snow. Throughout the year, in Spencer, there are 45.5 snowfall days, and 11.14" (283mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 41min.On the first day of the month, sunrise is at 6:12 am and sunset at 8:22 pm. On the last day of May, sunrise is at 5:43 am and sunset at 8:53 pm CDT.
Sunshine
The average sunshine in May is 8.7h.UV index
The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, the maximum UV index of 5 suggests these recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. 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
Average temperature in May
Spencer, IA
- Average high temperature in May: 67.8°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 (22.8°F).
- Average low temperature in May: 51.4°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
Spencer, 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 (29.87"Hg).
Average wind speed in May
Spencer, IA
- Average wind speed in May: 9.7mph
The windiest months (with the highest average wind speed) are January and April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in May
Spencer, 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
Spencer, IA
- Average rainfall in May: 2.13"
The wettest month (with the highest rainfall) is June (2.44").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in May
Spencer, IA
- Average rainfall days in May: 15.5 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in May
Spencer, IA
- Average snowfall in May: 0.12"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Spencer, IA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Spencer, 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 6min).
- Average sunshine in May: 8h and 42min
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 0min).
Average sunshine days in May
Spencer, IA
- Average sunshine days in May: 12.6 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in May
Spencer, 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
Spencer, IA
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in May
Spencer, IA
- Average visibility in May: 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).
