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 Saint Johns, the beginning of December is marked by a lowered average high-temperature, shifting from November's chilly 46.4°F (8°C) to a wintry 35.8°F (2.1°C). Saint Johns's average low-temperature in the month of December is recorded at a freezing cold 26.1°F (-3.3°C).Humidity
In Saint Johns, the average relative humidity in December is 84%.Rainfall
January and December are months with the least rain in Saint Johns when the rain falls for 9.3 days and typically aggregates up to 1.34" (34mm) of rain.Snowfall
January through May, October through December are months with snowfall in Saint Johns. In Saint Johns, during December, snow falls for 11.5 days and regularly aggregates up to 2.09" (53mm) of snow. In Saint Johns, during the entire year, snow falls for 54.1 days and aggregates up to 13.43" (341mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Saint Johns.On the first day of the month, sunrise is at 7:47 am and sunset at 5:11 pm. On the last day of December, in Saint Johns, Indiana, sunrise is at 8:06 am and sunset at 5:21 pm EST.
Sunshine
In December, the average sunshine is 3.7h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In December, a daily UV index of 1 turns into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Saint Johns?
What is the average humidity in December in Saint Johns?
What is the driest month in Saint Johns?
How much does it rain in Saint Johns in December?
How many days does it snow in December in Saint Johns?
What is the month with the shortest days in Saint Johns?
What is the average length of the day in December in Saint Johns?
What time are sunrise and sunset in December in Saint Johns?
How many hours of sunshine does Saint Johns have in December?
What is the month with the lowest UV index in Saint Johns?
What is the UV index reading in December in Saint Johns?
Average temperature in December
Saint Johns, IN
- Average high temperature in December: 35.8°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in December: 26.1°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in December
Saint Johns, IN
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Saint Johns, IN
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in December
Saint Johns, IN
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is October (76%).
Average rainfall in December
Saint Johns, IN
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is May (3.11").
The driest months (with the least rainfall) are January and December (1.34").
Average rainfall days in December
Saint Johns, IN
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in December
Saint Johns, IN
- Average snowfall in December: 2.09"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Saint Johns, IN
- Average snowfall days in December: 11.5 days
The month with the highest number of snowfall days is January (15.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Saint Johns, IN
- 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: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Saint Johns, IN
- Average sunshine days in December: 12.2 days
The month with the most sunshine days is November (15.5 days).
The month with the least sunshine days is February (9.9 days).
Average UV index in December
Saint Johns, 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
Saint Johns, IN
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in December
Saint Johns, IN
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, August and September (5mi).
Saint Johns, Indiana, USA
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