United StatesAverage weather for El Cajon in December
It's pleasantly warm in December in El Cajon with an average temperature of 20°C. Temperatures this month range from a low of 17°C to a high of 23°C. At night, you can expect temperatures between 7°C and 13°C.
Start of December
The month of December starts in El Cajon with mild temps, averaging around 21°C during the day and nights around 11°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
Mid December
By mid-December, daytime temps stay steady at around 21°C, with nights around 10°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of December
By the end of December, the average daytime temperature in El Cajon is around 19°C, while nighttime temps are about 10°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
In December, there is an average of 138 mm of precipitation, spread over 6 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
El Cajon in December |
New York | ||
|---|---|---|---|
 Average temperature |
20°C | 9°C | |
 Max. temperature |
23°C | 12°C | |
| Min. temperature |
17°C | -5°C | |
 Total precipitation |
138 mm | 133 mm | |
| Rainy days |
6 days | 17 days | |
November
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is December a good time to visit El Cajon?
Looking for sun? December isn’t a good month to be in El Cajon. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 29°C in 2017, El Cajon reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was 10°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of 2°C to a highest value of 17°C.
Check out the climate of El Cajon for all months and discover the best travel time
Daily Temperature in December in El Cajon
This chart shows the average daily high and low temperatures in December for El Cajon, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in December in El Cajon
The chart below shows the average daily precipitation in December for El Cajon, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for December, you can expect about 6 days of precipitation in El Cajon.
Daily UV index in December in El Cajon
This chart shows the average daily UV index in December in El Cajon, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in December in El Cajon over the years
This chart shows the average temperature in December in El Cajon, measured in degrees Celsius, over the past few years.
Total precipitation in December in El Cajon over the years
This chart shows the average precipitation in December in El Cajon, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in December for El Cajon
Click on any day in December to get detailed info about the usual weather on that day in El Cajon. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in December in El Cajon
Have you been to El Cajon in December?
Share your weather experience in December in El Cajon.
Average weather in El Cajon by month
Click on a month below to see detailed weather info for El Cajon. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
