Tustin, CA Weather & Climate Normals
What a normal year in Tustin actually looks like
On the 30-year record NOAA keeps for Tustin, CA, the comfort score comes out to 93/100, very mild year-round: Many months fall in a comfortable temperature range with limited snow or seasonal extremes. Only 12 months a year land in the 55–75°F range this site treats as mild.
How much Tustin's weather actually swings
Average temperatures in Tustin run from 58°F in Dec up to 75°F in Aug, a 16.6°F seasonal swing, one of the smaller gaps in this dataset.
How wet Tustin actually gets
Over a typical year, Tustin sees about 12.54in of precipitation a year across roughly 35 days with measurable rain or snow, with 0in of snow a year.
Tustin against the rest of the country
Out of 4876 cities scored here, Tustin comes in at 48; within CA alone it ranks 48 of 429. Population is about 78,863.
Checking the actual forecast
These figures come from SANTA ANA FIRE STN, CA US, the NOAA station 3.4 miles from Tustin, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is