December weather forecastParnell, IA
December
Weather in December
December, the first month of the winter in Parnell, is also an icy month, with an average temperature varying between 22.6°F (-5.2°C) and 33.6°F (0.9°C).Temperature
Onset of December witnesses a reduction in the average high-temperature, falling from a chilly 46.6°F (8.1°C) in November to an icy 33.6°F (0.9°C). Parnell records an average low of 22.6°F (-5.2°C) throughout the nights in December.Humidity
In Parnell, the average relative humidity in December is 81%.Rainfall
In Parnell, during December, the rain falls for 6.4 days and regularly aggregates up to 1.42" (36mm) of precipitation. Throughout the year, there are 142 rainfall days, and 29.09" (739mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Parnell, in December, during 6.7 snowfall days, 2.17" (55mm) of snow is typically accumulated. In Parnell, during the entire year, snow falls for 35.1 days and aggregates up to 15.43" (392mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:15 am and sunset at 4:38 pm. On the last day of December, sunrise is at 7:34 am and sunset at 4:48 pm CST.
Sunshine
The average sunshine in December is 4.5h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high daily UV index of 1 during December translates into the following directions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Parnell, IA
- Average high temperature in December: 33.6°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27.1°F).
- Average low temperature in December: 22.6°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in December
Parnell, IA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Parnell, IA
- Average wind speed in December: 10.1mph
The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Parnell, IA
- Average humidity in December: 81%
The months with the highest relative humidity are January and July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Parnell, IA
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in December
Parnell, IA
- Average rainfall days in December: 6.4 days
The months with the highest number of rainy days are May and June (18.5 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in December
Parnell, IA
- Average snowfall in December: 2.17"
The month with the highest snowfall is January (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Parnell, IA
- Average snowfall days in December: 6.7 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Parnell, IA
- Average daylight in December: 9h and 12min
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: 4h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Parnell, IA
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in December
Parnell, IA
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Parnell, IA
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in December
Parnell, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
