December weather forecastBernard, IA
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Bernard, Iowa, with an average temperature ranging between min 21.2°F (-6°C) and max 31.5°F (-0.3°C).Temperature
Observing a mild shift, the average high-temperature during December reduces from November's chilly 44.1°F (6.7°C) to a freezing cold 31.5°F (-0.3°C). Bernard, in the month of December, anticipates a consistent average low-temperature of 21.2°F (-6°C).Humidity
The average relative humidity in December in Bernard, Iowa, is 82%.Rainfall
In Bernard, in December, during 7.2 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. In Bernard, during the entire year, the rain falls for 140.9 days and collects up to 28.11" (714mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In December, it is snowing for 9.3 days. Throughout December, 3.03" (77mm) of snow is accumulated. In Bernard, during the entire year, snow falls for 46.4 days and aggregates up to 17.64" (448mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:13 am and sunset at 4:31 pm. On the last day of December, sunrise is at 7:32 am and sunset at 4:41 pm CST.
Sunshine
In Bernard, the average sunshine in December is 4.2h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: During December, 1 as the daily maximum UV index converts into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bernard, IA
- Average high temperature in December: 31.5°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (24.6°F).
- Average low temperature in December: 21.2°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in December
Bernard, IA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Bernard, IA
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in December
Bernard, IA
- Average humidity in December: 82%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Bernard, IA
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in December
Bernard, IA
- Average rainfall days in December: 7.2 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in December
Bernard, IA
- Average snowfall in December: 3.03"
The month with the highest snowfall is January (5.08").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Bernard, IA
- Average snowfall days in December: 9.3 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Bernard, IA
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 12min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Bernard, IA
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is December (17.3 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in December
Bernard, IA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Bernard, IA
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Bernard, 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).
