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 beginning of December brings a minor change in the average high-temperature, shifting from a comfortable 66.2°F (19°C) in November to a moderate 59.4°F (15.2°C). During December, the nighttime temperature averages of 42.3°F (5.7°C).Humidity
In Harper, Texas, the average relative humidity in December is 67%.Rainfall
In Harper, during December, the rain falls for 8.8 days and regularly aggregates up to 1.02" (26mm) of precipitation. Throughout the year, there are 135.4 rainfall days, and 18.27" (464mm) of precipitation is accumulated.Snowfall
January, February, November and December are months with snowfall in Harper, Texas. In Harper, during December, snow falls for 0.4 days and regularly aggregates up to 0.04" (1mm) of snow. Throughout the year, in Harper, there are 1.9 snowfall days, and 0.35" (9mm) of snow is accumulated.Daylight
With an average of 10h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:16 am and sunset at 5:36 pm. On the last day of December, in Harper, sunrise is at 7:33 am and sunset at 5:47 pm CST.
Sunshine
The months with the least sunshine are November and December, with an average of 5.8h of sunshine.UV index
December is the month with the lowest UV index in Harper, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The UV index of 3 in December translates into these instructions:
Adopt protective measures - It is advised to guard against sun damage. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Harper?
What is the average humidity in December in Harper?
How much does it rain in Harper in December?
How much does it snow in Harper in December?
What is the month with the shortest days in Harper?
What is the average length of the day in December in Harper?
When is the sunrise / sunset in December in Harper?
What is the month with the least sunshine in Harper?
How many hours of sunshine does Harper have in December?
When is the lowest UV index in Harper?
What is the UV index intensity in December in Harper?
Average temperature in December
Harper, TX
- Average high temperature in December: 59.4°F
The warmest month (with the highest average high temperature) is August (92.8°F).
The month with the lowest average high temperature is January (58.6°F).
- Average low temperature in December: 42.3°F
The month with the highest average low temperature is August (71.6°F).
The coldest month (with the lowest average low temperature) is January (40.6°F).
Average pressure in December
Harper, TX
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Harper, TX
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is September (7.5mph).
Average humidity in December
Harper, TX
- Average humidity in December: 67%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (60%).
Average rainfall in December
Harper, TX
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is November (0.87").
Average rainfall days in December
Harper, TX
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Harper, TX
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.16").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in December
Harper, TX
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is January (0.7 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Harper, TX
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The months with the least sunshine are November and December (Average sunshine: 5h and 48min).
Average sunshine days in December
Harper, TX
- Average sunshine days in December: 20.1 days
The month with the most sunshine days is January (21.2 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in December
Harper, TX
- Average UV index in December: 3
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Harper, TX
- Average cloud cover in December: 36
The month with the most cloud cover is May (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in December
Harper, TX
- 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).
Harper, Texas, USA
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