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United StatesThe weather in January in El Cajon
It's pleasantly warm in January in El Cajon with an average temperature of 20°C. Temperatures this month range from a low of 18°C to a high of 23°C. At night, you can expect temperatures between 8°C and 11°C.
Looking for great weather? January is a good time to be in El Cajon. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in January for El Cajon, California. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 31°C in 2021, El Cajon reached the highest temperature in January over the past 10 years. The lowest daytime temperature in this month was 11°C in 2021. The extreme nighttime temperatures ranged from a lowest recorded value of 3°C to a highest value of 17°C.
Rainfall amount
In January, there is an average of 71 mm of precipitation, spread over 9 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
Daily weather in January for El Cajon
Click on any day in January 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.
January weather comparison
| El Cajon | New York | |
|---|---|---|
| Average temperature | 20°C | 5°C |
| Max. temperature | 23°C | 11°C |
| Min. temperature | 8°C | -5°C |
| Total precipitation | 71 mm | 97 mm |
| Rainy days | 9 days | 12 days |
Start of January
The month of January starts in El Cajon with mild temps, averaging around 21°C during the day and nights around 10°C.
Mid January
By mid-January, daytime temps stay steady at around 21°C, with nights around 11°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of January
By the end of January, the average daytime temperature in El Cajon is around 21°C, while nighttime temps are about 10°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
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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.
Check out the climate of El Cajon for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in January in El Cajon, California. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in January in El Cajon
Temperature in January in El Cajon over the years
Precipitation charts
These charts show the average amount of precipitation in January in El Cajon, California. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in January in El Cajon
Total precipitation in January in El Cajon over the years
Daily UV index in January in El Cajon
This chart shows the average daily UV index in January 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.
Weather experiences in January in El Cajon
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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.