December weather forecastHull, IA
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Hull, Iowa, with an average temperature varying between 27.9°F (-2.3°C) and 16.7°F (-8.5°C).Temperature
Hull's weather in December is characterized by a distinct drop in the average high-temperature, reducing from a frosty 43.7°F (6.5°C) in November to a freezing cold 27.9°F (-2.3°C). The nighttime temperature in Hull, Iowa, during December, averages of 16.7°F (-8.5°C).Humidity
In Hull, Iowa, the average relative humidity in December is 84%.Rainfall
In Hull, in December, during 4.5 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. In Hull, during the entire year, the rain falls for 117.7 days and collects up to 21.42" (544mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 9.5 days. Throughout December, 2.99" (76mm) of snow is accumulated. In Hull, during the entire year, snow falls for 43.5 days and aggregates up to 15.91" (404mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:37 am and sunset at 4:50 pm. On the last day of December, sunrise is at 7:56 am and sunset at 4:59 pm CST.
Sunshine
In Hull, the average sunshine in December is 4.5h.UV index
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 2 in December suggests the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hull, IA
- Average high temperature in December: 27.9°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in December: 16.7°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in December
Hull, IA
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Hull, IA
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in December
Hull, IA
- Average humidity in December: 84%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (67%).
Average rainfall in December
Hull, IA
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is June (3.35").
The driest months (with the least rainfall) are January and February (0.67").
Average rainfall days in December
Hull, IA
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is June (16.4 days).
The month with the least rainy days is February (3 days).
Average snowfall in December
Hull, IA
- Average snowfall in December: 2.99"
The month with the highest snowfall is February (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Hull, IA
- Average snowfall days in December: 9.5 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
Hull, IA
- Average daylight in December: 9h and 0min
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 December: 4h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Hull, IA
- Average sunshine days in December: 19.4 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in December
Hull, 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
Hull, IA
- Average cloud cover in December: 52
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Hull, 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).
