NWS, American, European side by side around El Cajon and nearby towns.Live rain radar →
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Next 14 hours
consensus of the three models
7-day forecast
where the models agree, and where they split
El Cajon, CA is at its warmest in Aug (average highs near 87°F) and coldest in Jan (lows around 45°F), with roughly 23 in of precipitation across the year. Below, compare what NWS, American, European forecast for El Cajon right now, and see exactly where they disagree.
El Cajon climate by month
average daytime high and overnight low across a typical year
Jan
62°
45°
Feb
62°
45°
Mar
62°
46°
Apr
69°
50°
May
71°
53°
Jun
77°
57°
Jul
86°
62°
Aug
87°
64°
Sep
83°
62°
Oct
82°
58°
Nov
73°
50°
Dec
69°
48°
Common questions
What's the weather in El Cajon today?
On this page we show what NWS, American, European each forecast for El Cajon today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in El Cajon today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for El Cajon and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for El Cajon?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the El Cajon forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in El Cajon?
Aug is typically the warmest month in El Cajon, with average highs around 87°F.
How cold does El Cajon get?
The coldest month in El Cajon is Jan, when overnight lows average about 45°F.
How much rain does El Cajon get?
El Cajon sees roughly 23 in of precipitation a year, with Jan usually the wettest month.
The forecasts Americans check
The two biggest apps keep their model a secret, so we can't show their numbers, only link you to them. The National Weather Service is public, so its data sits right in the comparison above.