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
December comes with a drop in the average high-temperature, falling from November's chilly 47.3°F (8.5°C) to an icy 36°F (2.2°C). Valparaiso, in December, observes a steady average low-temperature of 26.4°F (-3.1°C).Humidity
The average relative humidity in December is 81%.Rainfall
In Valparaiso, in December, it is raining for 6.7 days, with typically 0.98" (25mm) of accumulated precipitation. In Valparaiso, during the entire year, the rain falls for 133.4 days and collects up to 19.09" (485mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 9.1 days. Throughout December, 1.46" (37mm) of snow is accumulated. In Valparaiso, during the entire year, snow falls for 43.8 days and aggregates up to 8.62" (219mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:55 am and sunset at 4:19 pm. On the last day of December, sunrise is at 7:14 am and sunset at 4:28 pm CST.
Sunshine
In Valparaiso, the average sunshine in December is 3.7h.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 vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Valparaiso have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Valparaiso have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Valparaiso, IN
- Average high temperature in December: 36°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in December: 26.4°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in December
Valparaiso, IN
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Valparaiso, IN
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in December
Valparaiso, IN
- Average humidity in December: 81%
The months with the highest relative humidity are July and August (84%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Valparaiso, IN
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days in December
Valparaiso, IN
- Average rainfall days in December: 6.7 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (4.9 days).
Average snowfall in December
Valparaiso, IN
- Average snowfall in December: 1.46"
The month with the highest snowfall is January (2.48").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Valparaiso, IN
- Average snowfall days in December: 9.1 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Valparaiso, IN
- Average daylight in December: 9h and 1min
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 12min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Valparaiso, IN
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in December
Valparaiso, IN
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Valparaiso, IN
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Valparaiso, IN
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Valparaiso, Indiana, USA
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