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 shift from November to December sees a distinct decrease in the average high-temperature, dropping from a frosty 43.7°F (6.5°C) to a subzero cold 27.9°F (-2.3°C). December brings an average low-temperature of 16.7°F (-8.5°C) to Hull.Humidity
The average relative humidity in December is 84%.Rainfall
In Hull, during December, the rain falls for 4.5 days and regularly aggregates up to 1.1" (28mm) of precipitation. Throughout the year, there are 117.7 rainfall days, and 21.42" (544mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Hull, in December, during 9.5 snowfall days, 2.99" (76mm) of snow is typically accumulated. In Hull, Iowa, during the entire year, snow falls for 43.5 days and aggregates up to 15.91" (404mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year in Hull.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, in Hull, sunrise is at 7:56 am and sunset at 4:59 pm CST.
Sunshine
The average sunshine in December is 4.5h.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 reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
How cold is December in Hull?
What is the average humidity in December in Hull?
How many days does it rain in December in Hull?
How much does it snow in Hull in December?
What is the month with the shortest days in Hull?
What is the average length of the day in December in Hull?
When are sunrise and sunset in December in Hull?
How long on average sun shines in December in Hull?
When is the lowest UV index in Hull?
How high is the UV index in December in Hull?
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 3min
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).
Hull, Iowa, USA
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