Weather in Tustin, CA
Tustin, Thursday, 22 October, 09:22
Overcast. Feels like 65°. High 67°, low 60°.
Monthly outlook for Tustin, CA: average high 75.9°, average low 64.1°. That is 0.8° above the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 2 November (85.1°), the coolest 24 October (56.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 22 October – 31 October | 74° | 75° | -0.6° |
| 1 November – 10 November | 78.9° | 72.6° | +3.5° |
| 11 November – 20 November | at normal | 70.5° | — |
October records over 66 years
0.07
Tustin, Friday, 23 October
Light rain. High 70°, low 59°.
0
Tustin, Saturday, 24 October
Clear. High 73°, low 56°.
0Tustin, Sunday, 25 October
Clear. High 77°, low 57°.
0Tustin, Monday, 26 October
Overcast. High 80°, low 59°.
0Tustin, Tuesday, 27 October
Clear. High 78°, low 58°.
0
Tustin, Wednesday, 28 October
Partly cloudy. High 78°, low 66°.
0Tustin, Thursday, 29 October
Overcast. High 74°, low 67°.
0.01Tustin, Friday, 30 October
Light rain. High 73°, low 65°.
0Tustin, Saturday, 31 October
Overcast. High 70°, low 64°.
0Tustin, Sunday, 1 November
Overcast. High 79°, low 65°.
0Tustin, Monday, 2 November
Partly cloudy. High 85°, low 71°.
0Tustin, Tuesday, 3 November
Clear. High 80°, low 71°.
0Tustin, Wednesday, 4 November
Clear. High 80°, low 70°.
0Tustin, Thursday, 5 November
Partly cloudy. High 75°, low 70°.
0Tustin, Friday, 6 November
Clear. High 75°, low 68°.
0.05
Tustin, Saturday, 7 November
Climate normal for this date — 60-year average.
0.07Tustin, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Tustin, Monday, 9 November
Climate normal for this date — 60-year average.
0.04Tustin, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Tustin, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.04Tustin, Thursday, 12 November
Climate normal for this date — 60-year average.
0.03Tustin, Friday, 13 November
Climate normal for this date — 60-year average.
0.04Tustin, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Tustin, Sunday, 15 November
Climate normal for this date — 60-year average.
0.04Tustin, Monday, 16 November
Climate normal for this date — 60-year average.
0.03Tustin, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.05Tustin, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.05Tustin, Thursday, 19 November
Climate normal for this date — 60-year average.
0.07Tustin, Friday, 20 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Tustin, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Tustin, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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