December weather forecast
Harmony, CA

Share

Weather in December

December, the first month of the winter in Harmony, is still a refreshing month, with temperature in the range of an average high of 59.4°F (15.2°C) and an average low of 48.2°F (9°C).

Temperature

Harmony witnesses the coldest weather in December, with temperatures averaging a high of 59.4°F (15.2°C) and a low of 48.2°F (9°C).

Humidity

In Harmony, the average relative humidity in December is 67%.

Rainfall

The months with the most rainfall are March and December, with an average 1.3" (33mm) of precipitation.

Daylight

December has the shortest days of the year, with an average of 9h and 48min of daylight.
On the first day of December, sunrise is at 6:55 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:01 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 6.3h of sunshine.

UV index

The months with the lowest UV index in Harmony, California, are January through March, November and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A typical high UV index of 4 in December suggests the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. To guard against the harmful effects of the Sun, minimize exposure during midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
[Resources]

Frequently asked questions

What month is the coldest in Harmony?

The lowest temperatures in Harmony, California, are recorded in December, with averages reaching a high of 59.4°F (15.2°C) and a low of 48.2°F (9°C).

What are the temperatures in Harmony in December?

In Harmony, 59.4°F (15.2°C) is the average high-temperature and 48.2°F (9°C) is the average low-temperature during December.

What is the average humidity in December in Harmony?

The average relative humidity in December in Harmony, California, is 67%.

What is the wettest month in Harmony?

The wettest months are March and December, with an average 1.3" (33mm) of rainfall.

How much does it rain in Harmony in December?

In Harmony, California, in December, it is raining for 6.5 days, with typically 1.3" (33mm) of accumulated precipitation.

What is the month with the shortest days in Harmony?

The month with the shortest days in Harmony, California, is December, with an average of 9h and 48min of daylight.

What is the average length of the day in December in Harmony?

In December, the average day length is 9h and 49min.

When is the sunrise / sunset in December in Harmony?

On the first day of December in Harmony, California, sunrise is at 6:55 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:01 pm PST.

What is the month with the least sunshine in Harmony?

December has the least sunshine of the year, with an average of 6.3h of sunshine.

How many hours of sunshine does Harmony have in December?

In December, the average sunshine duration in Harmony is 6.3h.

What is the month with the lowest UV index in Harmony?

The months with the lowest UV index in Harmony, California, are January through March, November and December, with an average maximum UV index of 4.

What is the UV index intensity in December in Harmony?

The average daily maximum UV index in December in Harmony is 4. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Harmony, CA

Average temperature in December - Harmony, CA
  • Average high temperature in December: 59.4°F

The warmest month (with the highest average high temperature) is September (75.4°F).
The month with the lowest average high temperature is December (59.4°F).

  • Average low temperature in December: 48.2°F

The month with the highest average low temperature is September (59.9°F).
The coldest month (with the lowest average low temperature) is February (47.8°F).

[Resources]

Average pressure in December
Harmony, CA

Average pressure in December - Harmony, CA
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is September (29.91"Hg).

[Resources]

Average wind speed in December
Harmony, CA

Average wind speed in December - Harmony, CA
  • Average wind speed in December: 6.9mph

The windiest month (with the highest average wind speed) is May (8.6mph).
The calmest months (with the lowest average wind speed) are July, August, September, October and November (6.5mph).

[Resources]

Average humidity in December
Harmony, CA

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

The month with the highest relative humidity is March (71%).
The month with the lowest relative humidity is October (61%).

[Resources]

Average rainfall in December
Harmony, CA

Average rainfall in December - Harmony, CA
  • Average rainfall in December: 1.3"

The wettest months (with the highest rainfall) are March and December (1.3").
The driest months (with the least rainfall) are June and August (0.04").

[Resources]

Average rainfall days in December
Harmony, CA

Average rainfall days in December - Harmony, CA
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is March (8.5 days).
The month with the least rainy days is August (0.8 days).

[Resources]

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

Average daylight in December / Average sunshine in December - Harmony, CA
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in December: 6h and 2min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).

[Resources]

Average sunshine days in December
Harmony, CA

Average sunshine days in December - Harmony, CA
  • Average sunshine days in December: 23.8 days

The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is February (21.2 days).

[Resources]

Average UV index in December
Harmony, CA

Average UV index in December - Harmony, CA
  • Average UV index in December: 4

The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

[Resources]

Average cloud cover in December
Harmony, CA

Average cloud cover in December - Harmony, CA
  • Average cloud cover in December: 27

The month with the most cloud cover is March (Cloud cover 28).
The months with the least cloud cover are July, August and September (Cloud cover 8).

[Resources]

Average visibility in December
Harmony, CA

Average visibility in December - Harmony, CA
  • 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).

[Resources]

Harmony, California, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location