Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The onset of December brings a small change in high-temperatures, falling from a frosty 46.6°F (8.1°C) in November to a wintry 32.9°F (0.5°C). An average low-temperature of 21.4°F (-5.9°C) is noted during the nights in December.Humidity
In Jamaica, Iowa, the average relative humidity in December is 79%.Rainfall
In Jamaica, Iowa, in December, it is raining for 5.5 days, with typically 1.26" (32mm) of accumulated precipitation. Throughout the year, in Jamaica, there are 131.7 rainfall days, and 26.65" (677mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Jamaica. In Jamaica, in December, snow falls for 7.5 days, with typically accumulated 1.81" (46mm) of snow. Throughout the year, there are 37.2 snowfall days, and 13.35" (339mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:25 am and sunset at 4:47 pm. On the last day of December, in Jamaica, sunrise is at 7:44 am and sunset at 4:56 pm CST.
Sunshine
In December, the average sunshine in Jamaica is 4.8h.UV index
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Frequently asked questions
How cold is December in Jamaica?
What is the average humidity in December in Jamaica?
How much does it rain in Jamaica in December?
How many days does it snow in December in Jamaica?
What is the month with the shortest days in Jamaica?
What is the average length of the day in December in Jamaica?
When is the sunrise / sunset in December in Jamaica?
How many hours of sunshine does Jamaica have in December?
What are the months with the lowest UV index in Jamaica?
What is the UV index intensity in December in Jamaica?
Average temperature in December
Jamaica, IA
- Average high temperature in December: 32.9°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 December: 21.4°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 December
Jamaica, IA
- Average pressure in December: 30.12"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 December
Jamaica, IA
- Average wind speed in December: 10.1mph
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 December
Jamaica, IA
- Average humidity in December: 79%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (69%).
Average rainfall in December
Jamaica, IA
- Average rainfall in December: 1.26"
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 December
Jamaica, IA
- Average rainfall days in December: 5.5 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 December
Jamaica, IA
- Average snowfall in December: 1.81"
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 December
Jamaica, IA
- Average snowfall days in December: 7.5 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 December /
Average sunshine in December
Jamaica, IA
- Average daylight in December: 9h and 1min
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 December: 4h and 5min
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 December
Jamaica, IA
- Average sunshine days in December: 18.9 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 December
Jamaica, IA
- Average UV index in December: 2
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 December
Jamaica, IA
- Average cloud cover in December: 50
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 December
Jamaica, IA
- Average visibility in December: 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).
Jamaica, Iowa, USA
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