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
During the transition into December, Helmer observes a decrease in the average high-temperature, falling from a chilly 46.4°F (8°C) in November to an icy 35.2°F (1.8°C). Helmer experiences a mean low-temperature of 25.7°F (-3.5°C) during December.Humidity
The average relative humidity in December in Helmer is 84%.Rainfall
December is the month with the least rainfall. Rain falls for 10.1 days and accumulates 1.57" (40mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Helmer, in December, during 12.1 snowfall days, 2.64" (67mm) of snow is typically accumulated. In Helmer, during the entire year, snow falls for 56 days and aggregates up to 15.51" (394mm) of snow.Daylight
The month with the shortest days in Helmer is December, with an average of 9h and 12min of daylight.On the first day of December in Helmer, sunrise is at 7:48 am and sunset at 5:11 pm. On the last day of the month, sunrise is at 8:07 am and sunset at 5:20 pm EST.
Sunshine
The average sunshine in December is 3.6h.UV index
December is the month with the lowest UV index in Helmer, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: In December, a regular UV index of 1 translates into these guidelines:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. Boost your sun resistance with garments that are densely woven yet spacious. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Helmer in December?
What is the average humidity in December in Helmer?
What is the driest month in Helmer?
How much does it rain in Helmer in December?
How many days does it snow in December in Helmer?
What is the month with the shortest days in Helmer?
How many hours of daylight does Helmer have in December?
When are sunrise and sunset in December in Helmer?
How long on average sun shines in December in Helmer?
When is the lowest UV index in Helmer?
What is the UV index reading in December in Helmer?
Average temperature in December
Helmer, IN
- Average high temperature in December: 35.2°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 (29.5°F).
- Average low temperature in December: 25.7°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°F).
Average pressure in December
Helmer, 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
Helmer, IN
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in December
Helmer, IN
- Average humidity in December: 84%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (76%).
Average rainfall in December
Helmer, IN
- Average rainfall in December: 1.57"
The wettest months (with the highest rainfall) are April and May (3.66").
The driest month (with the least rainfall) is December (1.57").
Average rainfall days in December
Helmer, IN
- Average rainfall days in December: 10.1 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (7.2 days).
Average snowfall in December
Helmer, IN
- Average snowfall in December: 2.64"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Helmer, IN
- Average snowfall days in December: 12.1 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
Helmer, 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 July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in December
Helmer, IN
- Average sunshine days in December: 11.5 days
The months with the most sunshine days are September, October and November (14.7 days).
The month with the least sunshine days is February (9.4 days).
Average UV index in December
Helmer, IN
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Helmer, IN
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Helmer, IN
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Helmer, Indiana, USA
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