December weather forecastMartelle, IA
December
Weather in December
December, the first month of the winter in Martelle, is still a cold month, with an average temperature ranging between max 32.4°F (0.2°C) and min 22.1°F (-5.5°C).Temperature
Martelle's December weather features a mild decline in high-temperatures, reducing from a frosty 44.8°F (7.1°C) in November to a cold 32.4°F (0.2°C). An average temperature of 22.1°F (-5.5°C) marks the nights in December.Humidity
In Martelle, the average relative humidity in December is 82%.Rainfall
In Martelle, during December, the rain falls for 6.5 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Martelle, during the entire year, the rain falls for 137.5 days and collects up to 27.68" (703mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Martelle. In December, it is snowing for 8.7 days. Throughout December, 2.24" (57mm) of snow is accumulated. In Martelle, during the entire year, snow falls for 38.8 days and aggregates up to 15.16" (385mm) of snow.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 7:14 am and sunset at 4:34 pm. On the last day of December, in Martelle, sunrise is at 7:33 am and sunset at 4:44 pm CST.
Sunshine
The average sunshine in December is 4.2h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 1 in December transforms into this advice:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Boost your sun resistance with garments that are densely woven yet spacious. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Martelle, IA
- Average high temperature in December: 32.4°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in December: 22.1°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in December
Martelle, IA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Martelle, IA
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Martelle, IA
- Average humidity in December: 82%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Martelle, IA
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in December
Martelle, IA
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in December
Martelle, IA
- Average snowfall in December: 2.24"
The month with the highest snowfall is January (5.16").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Martelle, IA
- Average snowfall days in December: 8.7 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Martelle, IA
- Average daylight in December: 9h and 12min
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 12min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Martelle, IA
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in December
Martelle, IA
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Martelle, IA
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Martelle, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
