May weather forecastJamaica, IA
May
Weather in May
The last month of the spring, May, is a pleasant month in Jamaica, Iowa, with temperature in the range of an average high of 69.6°F (20.9°C) and an average low of 52.9°F (11.6°C).Temperature
An increase in the average high-temperature marks May, moving from April's refreshing 58.8°F (14.9°C) to a pleasant 69.6°F (20.9°C). Jamaica records an average nighttime low-temperature of 52.9°F (11.6°C) throughout May.Humidity
The average relative humidity in May is 75%.Rainfall
May is the month with the most rainfall. Rain falls for 17.5 days and accumulates 4.17" (106mm) of precipitation.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, Jamaica aggregates 0.24" (6mm) of snow. In Jamaica, during the entire year, snow falls for 37.2 days and aggregates up to 13.35" (339mm) of snow.Daylight
In May, the average length of the day is 14h and 34min.On the first day of May, sunrise is at 6:12 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 8:45 pm CDT.
Sunshine
In Jamaica, Iowa, the average sunshine in May is 8.7h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 5 in May suggests the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Jamaica, IA
- Average high temperature in May: 69.6°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (27.1°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 (14°F).
Average pressure in May
Jamaica, 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
Jamaica, IA
- Average wind speed in May: 8.9mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in May
Jamaica, IA
- Average humidity in May: 75%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (69%).
Average rainfall in May
Jamaica, IA
- Average rainfall in May: 4.17"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in May
Jamaica, IA
- Average rainfall days in May: 17.5 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in May
Jamaica, IA
- Average snowfall in May: 0.24"
The month with the highest snowfall is January (3.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Jamaica, 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
Jamaica, 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 42min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in May
Jamaica, IA
- Average sunshine days in May: 11.4 days
The months with the most sunshine days are October, November and December (18.9 days).
The month with the least sunshine days is June (10.6 days).
Average UV index in May
Jamaica, 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
Jamaica, IA
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in May
Jamaica, 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).
