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
The arrival of December corresponds with a temperature reduction, down from November's frosty 43.9°F (6.6°C) to a freezing cold 30.6°F (-0.8°C). During the month of December, an average low-temperature of 19.9°F (-6.7°C) is recorded in Bristow.Humidity
In Bristow, Iowa, the average relative humidity in December is 83%.Rainfall
In Bristow, in December, it is raining for 6.4 days, with typically 1.65" (42mm) of accumulated precipitation. Throughout the year, in Bristow, there are 148.3 rainfall days, and 31.02" (788mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Bristow. In Bristow, in December, during 12.5 snowfall days, 4.13" (105mm) of snow is typically accumulated. In Bristow, Iowa, during the entire year, snow falls for 53.2 days and aggregates up to 22.4" (569mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of December in Bristow, sunrise is at 7:23 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:47 pm CST.
Sunshine
The average sunshine in December in Bristow is 4.3h.UV index
In Bristow, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 2 during December leads to these advisories:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
How cold is December in Bristow?
What is the average humidity in December in Bristow?
How many days does it rain in December in Bristow?
How much does it snow in Bristow in December?
What is the month with the shortest days in Bristow?
How many hours of daylight does Bristow have in December?
When are sunrise and sunset in December in Bristow?
How long on average sun shines in December in Bristow?
What is the UV index reading in December in Bristow?
Average temperature in December
Bristow, IA
- Average high temperature in December: 30.6°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (24.1°F).
- Average low temperature in December: 19.9°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (11.8°F).
Average pressure in December
Bristow, IA
- Average pressure in December: 30.11"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Bristow, IA
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in December
Bristow, IA
- Average humidity in December: 83%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Bristow, IA
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is June (4.76").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in December
Bristow, IA
- Average rainfall days in December: 6.4 days
The month with the highest number of rainy days is June (20.1 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in December
Bristow, IA
- Average snowfall in December: 4.13"
The month with the highest snowfall is February (5.51").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Bristow, IA
- Average snowfall days in December: 12.5 days
The month with the highest number of snowfall days is January (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Bristow, IA
- Average daylight in December: 9h and 1min
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 2min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Bristow, IA
- Average sunshine days in December: 15.8 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (7.8 days).
Average UV index in December
Bristow, IA
- Average UV index in December: 2
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Bristow, IA
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in December
Bristow, IA
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Bristow, Iowa, USA
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