Weather in Tustin, CA
Tustin, Monday, 19 October, 13:13
Clear. Feels like 84°. High 84°, low 63°.
Monthly outlook for Tustin, CA: average high 79.5°, average low 65.9°. That is 2.4° above the climate normal for October. Precipitation is expected on 3 days (about 1.3 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 26 October (90°), the coolest 24 October (56.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 81.1° | 75.7° | +3° |
| 29 October – 7 November | 76.9° | 73.4° | +1.9° |
| 8 November – 17 November | at normal | 71° | — |
October records over 66 years
0Tustin, Tuesday, 20 October
Clear. High 82°, low 61°.
0.27
Tustin, Wednesday, 21 October
Rain. High 75°, low 59°.
0.7Tustin, Thursday, 22 October
Rain. High 69°, low 60°.
0
Tustin, Friday, 23 October
Partly cloudy. High 71°, low 57°.
0Tustin, Saturday, 24 October
Clear. High 75°, low 56°.
0
Tustin, Sunday, 25 October
Overcast. High 87°, low 62°.
0Tustin, Monday, 26 October
Clear. High 90°, low 73°.
0Tustin, Tuesday, 27 October
Overcast. High 88°, low 75°.
0Tustin, Wednesday, 28 October
Overcast. High 89°, low 76°.
0Tustin, Thursday, 29 October
Overcast. High 84°, low 74°.
0Tustin, Friday, 30 October
Partly cloudy. High 82°, low 71°.
0Tustin, Saturday, 31 October
Overcast. High 81°, low 70°.
0.34Tustin, Sunday, 1 November
Rain. High 71°, low 64°.
0Tustin, Monday, 2 November
Overcast. High 74°, low 67°.
0Tustin, Tuesday, 3 November
Overcast. High 70°, low 66°.
0.03
Tustin, 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.
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.
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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