December weather forecast and climate
Pioneer, CA

Weather in December

The first month of the winter, December, is also a frosty month in Pioneer, California, with temperature in the range of an average high of 48.6°F (9.2°C) and an average low of 32.9°F (0.5°C).

Temperature

December is the coldest month, with an average high-temperature of 48.6°F (9.2°C) and an average low-temperature of 32.9°F (0.5°C).

Humidity

In December, the average relative humidity is 67%.

Rainfall

In Pioneer, during December, the rain falls for 9.4 days and regularly aggregates up to 4.96" (126mm) of precipitation. Throughout the year, in Pioneer, there are 78.6 rainfall days, and 31.18" (792mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Pioneer, California, during 5.1 snowfall days, 7.99" (203mm) of snow is typically accumulated. Throughout the year, in Pioneer, there are 27.8 snowfall days, and 71.02" (1804mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9.5h of daylight.

Sunshine

With an average of 5.9h of sunshine, December has the least sunshine of the year.

UV index

Months with the lowest UV index are February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
[Resources]

FAQ

What is the coldest month in Pioneer?

The coldest month in Pioneer is December, with an average high-temperature of 48.6°F (9.2°C) and an average low-temperature of 32.9°F (0.5°C).

What is the temperature in December in Pioneer?

In Pioneer, California, in December, the average high-temperature is 48.6°F (9.2°C), and the average low-temperature is 32.9°F (0.5°C).

What is the average humidity in December in Pioneer?

The average relative humidity in December in Pioneer is 67%.

How much does it rain in Pioneer in December?

In Pioneer, in December, it is raining for 9.4 days, with typically 4.96" (126mm) of accumulated precipitation.

How many days does it snow in December in Pioneer?

In Pioneer, in December, during 5.1 snowfall days, 7.99" (203mm) of snow is typically accumulated.

What is the month with the shortest days in Pioneer?

The month with the shortest days in Pioneer, California, is December, with an average of 9.5h of daylight.

How many hours of daylight does Pioneer have in December?

In Pioneer, the average length of the day in December is 9.5h.

What is the month with the least sunshine in Pioneer?

The month with the least sunshine is December, with an average of 5.9h of sunshine.

How many hours of sunshine does Pioneer have in December?

In December, the average sunshine is 5.9h.

When is the lowest UV index in Pioneer?

Months with the lowest UV index in Pioneer, California, are February, November and December, with an average maximum UV index of 2.

What is the UV index reading in December in Pioneer?

In Pioneer, California, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays.

Average temperature in December
Pioneer, CA

Average temperature in December - Pioneer, CA
  • Average high temperature in December: 48.6°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (48.6°F).

  • Average low temperature in December: 32.9°F

The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).

[Resources]

Average pressure in December
Pioneer, CA

Average pressure in December - Pioneer, CA
  • Average pressure in December: 30.13"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.91").

[Resources]

Average wind speed in December
Pioneer, CA

Average wind speed in December - Pioneer, CA
  • Average wind speed in December: 5.3mph

The windiest month (with the highest average wind speed) is February (6.2mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

[Resources]

Average humidity in December
Pioneer, CA

Average humidity in December - Pioneer, CA
  • Average humidity in December: 67%

The month with the highest relative humidity is March (74%).
Months with the lowest relative humidity are July and August (37%).

[Resources]

Average rainfall in December
Pioneer, CA

Average rainfall in December - Pioneer, CA
  • Average rainfall in December: 4.96"

The wettest month (with the highest rainfall) is March (6.14").
The driest months (with the least rainfall) are July and August (0.08").

[Resources]

Average rainfall days in December
Pioneer, CA

Average rainfall days in December - Pioneer, CA
  • Average rainfall days in December: 9.4 days

The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (1.8 days).

[Resources]

Average snowfall in December
Pioneer, CA

Average snowfall in December - Pioneer, CA
  • Average snowfall in December: 7.99"

The month with the highest snowfall is March (18.98").
Months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in December
Pioneer, CA

Average snowfall days in December - Pioneer, CA
  • Average snowfall days in December: 5.1 days

The month with the highest number of snowfall days is March (6.4 days).
Months with the least snowfall days are June, July and August (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Pioneer, CA

Average daylight in December / Average sunshine in December - Pioneer, CA
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in December: 5.9h

The month with the most sunshine is July (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 5.9h).

[Resources]

Average sunshine days in December
Pioneer, CA

Average sunshine days in December - Pioneer, CA
  • Average sunshine days in December: 19 days

The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is March (14.3 days).

[Resources]

Average UV index in December
Pioneer, CA

Average UV index in December - Pioneer, CA
  • Average UV index in December: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are February, November and December (UV index 2).

[Resources]

Average cloud cover in December
Pioneer, CA

Average cloud cover in December - Pioneer, CA
  • Average cloud cover in December: 32

The month with the most cloud cover is March (Cloud cover 37).
Months with the least cloud cover are July and August (Cloud cover 5).

[Resources]

Average visibility in December
Pioneer, CA

Average visibility in December - Pioneer, CA
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

[Resources]