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 involves a decrease in the average high-temperature, dropping from a frosty 44.1°F (6.7°C) to a subzero cold 30°F (-1.1°C). An average nighttime temperature of 19°F (-7.2°C) is witnessed in Humboldt throughout December.Humidity
The average relative humidity in December in Humboldt is 83%.Rainfall
In Humboldt, during December, the rain falls for 5.1 days and regularly aggregates up to 1.26" (32mm) of precipitation. In Humboldt, Iowa, during the entire year, the rain falls for 130.6 days and collects up to 25" (635mm) of precipitation.Snowfall
Months with snowfall in Humboldt, Iowa, are January through May, October through December. In Humboldt, in December, during 9.3 snowfall days, 2.76" (70mm) of snow is typically accumulated. In Humboldt, during the entire year, snow falls for 41.2 days and aggregates up to 18.11" (460mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year in Humboldt, Iowa.On the first day of the month, sunrise is at 7:28 am and sunset at 4:44 pm. On the last day of December, in Humboldt, sunrise is at 7:47 am and sunset at 4:53 pm CST.
Sunshine
In December, the average sunshine is 4.5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: A daily high UV index of 2 in December leads to these guidelines:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. To guard against the harmful effects of the Sun, minimize exposure during midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Humboldt?
What is the average humidity in December in Humboldt?
How many days does it rain in December in Humboldt?
How much does it snow in Humboldt in December?
What is the month with the shortest days in Humboldt?
What is the average length of the day in December in Humboldt?
When is the sunrise / sunset in December in Humboldt?
How long on average sun shines in December in Humboldt?
What is the month with the lowest UV index in Humboldt?
What is the UV index reading in December in Humboldt?
Average temperature in December
Humboldt, IA
- Average high temperature in December: 30°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in December: 19°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in December
Humboldt, IA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Humboldt, IA
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in December
Humboldt, IA
- Average humidity in December: 83%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (68%).
Average rainfall in December
Humboldt, IA
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in December
Humboldt, IA
- Average rainfall days in December: 5.1 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in December
Humboldt, IA
- Average snowfall in December: 2.76"
The month with the highest snowfall is February (5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Humboldt, IA
- Average snowfall days in December: 9.3 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
Humboldt, IA
- Average daylight in December: 9h and 1min
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 6min).
- Average sunshine in December: 4h and 3min
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 0min).
Average sunshine days in December
Humboldt, IA
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in December
Humboldt, 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, November and December (UV index 2).
Average cloud cover in December
Humboldt, IA
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in December
Humboldt, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Humboldt, Iowa, USA
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