December weather forecastStrahan, IA
December
Weather in December
The first month of the winter, December, is also an icy month in Strahan, Iowa, with an average temperature varying between 34.7°F (1.5°C) and 22.1°F (-5.5°C).Temperature
December's arrival comes with a decrease in the average high-temperature, moving from a chilly 48.6°F (9.2°C) in November to a wintry 34.7°F (1.5°C). Nighttime temperatures in Strahan consistently average a subzero cold 22.1°F (-5.5°C) during December.Humidity
In Strahan, Iowa, the average relative humidity in December is 78%.Rainfall
In Strahan, in December, during 4.2 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 117.2 rainfall days, and 21.77" (553mm) of precipitation is accumulated.Snowfall
Months with snowfall in Strahan are January through April, October through December. In December, in Strahan, it is snowing for 4.8 days. Throughout December, 1.65" (42mm) of snow is accumulated. In Strahan, during the entire year, snow falls for 26.7 days and aggregates up to 9.76" (248mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:28 am and sunset at 4:54 pm. On the last day of December, sunrise is at 7:46 am and sunset at 5:04 pm CST.
Sunshine
The average sunshine in December in Strahan is 4.9h.UV index
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Strahan, IA
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in December: 22.1°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in December
Strahan, IA
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Strahan, IA
- Average wind speed in December: 9.6mph
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 July (6.8mph).
Average humidity in December
Strahan, IA
- Average humidity in December: 78%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is October (68%).
Average rainfall in December
Strahan, IA
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is June (4.06").
The driest months (with the least rainfall) are January and February (0.63").
Average rainfall days in December
Strahan, IA
- Average rainfall days in December: 4.2 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in December
Strahan, IA
- Average snowfall in December: 1.65"
The month with the highest snowfall is January (2.68").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Strahan, IA
- Average snowfall days in December: 4.8 days
The month with the highest number of snowfall days is January (7.9 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
Strahan, IA
- Average daylight in December: 9h and 18min
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 54min
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 36min).
Average sunshine days in December
Strahan, IA
- Average sunshine days in December: 23.1 days
The month with the most sunshine days is December (23.1 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in December
Strahan, IA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in December
Strahan, IA
- Average cloud cover in December: 46
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Strahan, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
