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 the transition to December, Harvey observes a drop in the average high-temperature, moving from a chilly 47.1°F (8.4°C) in November to an icy 34.5°F (1.4°C). Throughout the month of December, the average temperature dips to a freezing cold 22.8°F (-5.1°C) at night.Humidity
The average relative humidity in December in Harvey, Iowa, is 79%.Rainfall
In December, in Harvey, the rain falls for 4.9 days. Throughout December, 0.47" (12mm) of precipitation is accumulated. Throughout the year, there are 109.6 rainfall days, and 12.28" (312mm) of precipitation is accumulated.Snowfall
Months with snowfall in Harvey are January through May, October through December. In Harvey, in December, snow falls for 6.5 days, with typically accumulated 0.59" (15mm) of snow. Throughout the year, in Harvey, there are 29.7 snowfall days, and 5.16" (131mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.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, in Harvey, sunrise is at 7:37 am and sunset at 4:52 pm CST.
Sunshine
In Harvey, Iowa, the average sunshine in December is 4.7h.UV index
The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
How cold is December in Harvey?
What is the average humidity in December in Harvey?
How much does it rain in Harvey in December?
How much does it snow in Harvey in December?
What is the month with the shortest days in Harvey?
What is the average length of the day in December in Harvey?
When is the sunrise / sunset in December in Harvey?
How long on average sun shines in December in Harvey?
What is the UV index intensity in December in Harvey?
Average temperature in December
Harvey, IA
- Average high temperature in December: 34.5°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in December: 22.8°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in December
Harvey, IA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Harvey, IA
- Average wind speed in December: 9.8mph
The windiest months (with the highest average wind speed) are March and April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in December
Harvey, IA
- Average humidity in December: 79%
The months with the highest relative humidity are January, February, June and July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Harvey, IA
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is May (2.09").
The driest months (with the least rainfall) are January and February (0.43").
Average rainfall days in December
Harvey, IA
- Average rainfall days in December: 4.9 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Harvey, IA
- Average snowfall in December: 0.59"
The month with the highest snowfall is January (1.81").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Harvey, IA
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Harvey, 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 12min).
Average sunshine days in December
Harvey, IA
- Average sunshine days in December: 21.9 days
The month with the most sunshine days is December (21.9 days).
The month with the least sunshine days is June (12.4 days).
Average UV index in December
Harvey, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Harvey, IA
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in December
Harvey, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Harvey, Iowa, USA
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