December weather forecastPomeroy, IA
December
Weather in December
December, the first month of the winter in Pomeroy, is still a freezing cold month, with an average temperature ranging between max 30°F (-1.1°C) and min 19.4°F (-7°C).Temperature
Pomeroy's transition into December is marked by a distinct drop in the average high-temperature, reducing from a chilly 44.8°F (7.1°C) in November to a freezing cold 30°F (-1.1°C). In December, Pomeroy's temperature tends to fall to an average low of 19.4°F (-7°C) during the night.Humidity
In December, the average relative humidity is 82%.Rainfall
In Pomeroy, during December, the rain falls for 2.5 days and regularly aggregates up to 0.43" (11mm) of precipitation. Throughout the year, there are 84.6 rainfall days, and 7.91" (201mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Pomeroy, Iowa, in December, during 5.5 snowfall days, 0.31" (8mm) of snow is typically accumulated. Throughout the year, in Pomeroy, there are 29.4 snowfall days, and 3.62" (92mm) of snow is accumulated.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year in Pomeroy.On the first day of December in Pomeroy, sunrise is at 7:29 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 4:55 pm CST.
Sunshine
The average sunshine in December is 4.6h.UV index
The average daily maximum UV index in December in Pomeroy is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In December, the UV index of 2 transforms into the following advice:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Pomeroy, IA
- Average high temperature in December: 30°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in December: 19.4°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in December
Pomeroy, IA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Pomeroy, IA
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in December
Pomeroy, IA
- Average humidity in December: 82%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April and October (68%).
Average rainfall in December
Pomeroy, IA
- Average rainfall in December: 0.43"
The wettest month (with the highest rainfall) is May (1.34").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in December
Pomeroy, IA
- Average rainfall days in December: 2.5 days
The month with the highest number of rainy days is June (12 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in December
Pomeroy, IA
- Average snowfall in December: 0.31"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Pomeroy, IA
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is February (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
Pomeroy, IA
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Pomeroy, IA
- Average sunshine days in December: 24.3 days
The month with the most sunshine days is December (24.3 days).
The month with the least sunshine days is June (15.5 days).
Average UV index in December
Pomeroy, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in December
Pomeroy, IA
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and September (Cloud cover 31).
Average visibility in December
Pomeroy, 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).
