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
Hopkinton's weather changes with the onset of December, slightly falling from a frosty 44.6°F (7°C) in November to a subzero cold 31.8°F (-0.1°C). Hopkinton records a steady low-temperature average of 21.4°F (-5.9°C) during December.Humidity
The average relative humidity in December is 82%.Rainfall
In Hopkinton, in December, during 7.7 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. Throughout the year, in Hopkinton, there are 142.5 rainfall days, and 28.27" (718mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Hopkinton. In Hopkinton, Iowa, during December, snow falls for 9.4 days and regularly aggregates up to 3.07" (78mm) of snow. In Hopkinton, during the entire year, snow falls for 43.2 days and aggregates up to 17.17" (436mm) of snow.Daylight
The month with the shortest days in Hopkinton is December, with an average of 9h and 6min of daylight.On the first day of December in Hopkinton, sunrise is at 7:15 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:42 pm CST.
Sunshine
In Hopkinton, the average sunshine in December is 4.2h.UV index
The months with the lowest UV index in Hopkinton are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: An average UV index of 1 in December transforms into this advice:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
How cold is December in Hopkinton?
What is the average humidity in December in Hopkinton?
How many days does it rain in December in Hopkinton?
How many days does it snow in December in Hopkinton?
What is the month with the shortest days in Hopkinton?
How many hours of daylight does Hopkinton have in December?
What time are sunrise and sunset in December in Hopkinton?
How many hours of sunshine does Hopkinton have in December?
When is the lowest UV index in Hopkinton?
What is the UV index intensity in December in Hopkinton?
Average temperature in December
Hopkinton, IA
- Average high temperature in December: 31.8°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in December: 21.4°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 (13.3°F).
Average pressure in December
Hopkinton, IA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Hopkinton, IA
- Average wind speed in December: 10mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in December
Hopkinton, IA
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Hopkinton, IA
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is May (4.25").
The driest months (with the least rainfall) are January and February (1.26").
Average rainfall days in December
Hopkinton, IA
- Average rainfall days in December: 7.7 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in December
Hopkinton, IA
- Average snowfall in December: 3.07"
The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Hopkinton, IA
- Average snowfall days in December: 9.4 days
The month with the highest number of snowfall days is January (12.1 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
Hopkinton, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Hopkinton, IA
- Average sunshine days in December: 16.7 days
The month with the most sunshine days is September (17 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in December
Hopkinton, 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
Hopkinton, IA
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Hopkinton, IA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Hopkinton, Iowa, USA
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