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
In Hamilton, the average high-temperature in December decreases from a chilly 48.2°F (9°C) in November to a wintry 35.1°F (1.7°C). In the month of December, Hamilton witnesses a consistent average low-temperature of 23.7°F (-4.6°C).Humidity
In December, the average relative humidity is 79%.Rainfall
The month with the least rainfall is December, when the rain falls for 5.3 days and typically collects 0.63" (16mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Hamilton. In December, it is snowing for 5.6 days. Throughout December, 0.83" (21mm) of snow is accumulated. In Hamilton, during the entire year, snow falls for 28.3 days and aggregates up to 10.28" (261mm) of snow.Daylight
The month with the shortest days in Hamilton is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:18 am and sunset at 4:43 pm. On the last day of December, sunrise is at 7:36 am and sunset at 4:53 pm CST.
Sunshine
The average sunshine in December is 4.7h.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 low threat to health from exposure to the Sun's UV rays for average individuals.Note: In December, the UV index of 2 transforms into the following advice:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Hamilton?
What is the average humidity in December in Hamilton?
What is the driest month in Hamilton?
How much does it rain in Hamilton in December?
How many days does it snow in December in Hamilton?
What is the month with the shortest days in Hamilton?
How many hours of daylight does Hamilton have in December?
When is the sunrise / sunset in December in Hamilton?
How many hours of sunshine does Hamilton have in December?
What are the months with the lowest UV index in Hamilton?
How high is the UV index in December in Hamilton?
Average temperature in December
Hamilton, IA
- Average high temperature in December: 35.1°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in December: 23.7°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in December
Hamilton, 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 (29.89"Hg).
Average wind speed in December
Hamilton, IA
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Hamilton, IA
- Average humidity in December: 79%
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Hamilton, IA
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is June (2.99").
The driest month (with the least rainfall) is December (0.63").
Average rainfall days in December
Hamilton, IA
- Average rainfall days in December: 5.3 days
The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is January (4 days).
Average snowfall in December
Hamilton, IA
- Average snowfall in December: 0.83"
The month with the highest snowfall is January (2.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Hamilton, IA
- Average snowfall days in December: 5.6 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hamilton, IA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 4min
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 6min).
Average sunshine days in December
Hamilton, IA
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is November (21.9 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in December
Hamilton, IA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (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
Hamilton, IA
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Hamilton, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Hamilton, Iowa, USA
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