Weather in Tustin, CA
Tustin, Thursday, 15 October, 01:40
Clear. Feels like 64°. High 92°, low 63°.
Monthly outlook for Tustin, CA: average high 84°, average low 68.3°. That is 4.6° above the climate normal for October. Precipitation is expected on 2 days (about 1.5 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 17 October (96.3°), the coolest 21 October (61°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 October – 24 October | 83.7° | 76.4° | +4.1° |
| 25 October – 3 November | 84.4° | 74.5° | +5.5° |
| 4 November – 13 November | at normal | 71.8° | — |
October records over 66 years
0
Tustin, Friday, 16 October
Mostly clear. High 95°, low 71°.
0
Tustin, Saturday, 17 October
Clear. High 96°, low 77°.
0
Tustin, Sunday, 18 October
Partly cloudy. High 89°, low 70°.
0Tustin, Monday, 19 October
Clear. High 84°, low 67°.
0.1
Tustin, Tuesday, 20 October
Light rain. High 77°, low 63°.
1.35Tustin, Wednesday, 21 October
Rain. High 67°, low 61°.
0Tustin, Thursday, 22 October
Clear. High 72°, low 63°.
0Tustin, Friday, 23 October
Clear. High 78°, low 64°.
0Tustin, Saturday, 24 October
Clear. High 87°, low 70°.
0Tustin, Sunday, 25 October
Clear. High 87°, low 70°.
0Tustin, Monday, 26 October
Clear. High 88°, low 71°.
0
Tustin, Tuesday, 27 October
Overcast. High 88°, low 73°.
0Tustin, Wednesday, 28 October
Partly cloudy. High 84°, low 72°.
0Tustin, Thursday, 29 October
Clear. High 81°, low 69°.
0Tustin, Friday, 30 October
Overcast. High 79°, low 68°.
0.02Tustin, Saturday, 31 October
Climate normal for this date — 60-year average.
0.04Tustin, Sunday, 1 November
Climate normal for this date — 60-year average.
0.02Tustin, Monday, 2 November
Climate normal for this date — 60-year average.
0Tustin, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.03Tustin, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.02Tustin, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02Tustin, Friday, 6 November
Climate normal for this date — 60-year average.
0.05Tustin, 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.
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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