Weather in Simi Valley, CA
Simi Valley, Monday, 19 October, 08:46
Clear. Feels like 72°. High 83°, low 61°.
Monthly outlook for Simi Valley, CA: average high 76.2°, average low 59.9°. That is 0.3° below the climate normal for October. Precipitation is expected on 4 days (about 3.6 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 26 October (86.4°), the coolest 23 October (52.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 79.5° | 77.6° | +1.1° |
| 29 October – 7 November | 70.6° | 74.6° | -2.3° |
| 8 November – 17 November | at normal | 71.1° | — |
October records over 66 years
0Simi Valley, Tuesday, 20 October
Clear. High 81°, low 57°.
0.21
Simi Valley, Wednesday, 21 October
Rain. High 68°, low 59°.
0.19Simi Valley, Thursday, 22 October
Rain. High 67°, low 56°.
0Simi Valley, Friday, 23 October
Clear. High 74°, low 53°.
0Simi Valley, Saturday, 24 October
Clear. High 79°, low 56°.
0
Simi Valley, Sunday, 25 October
Partly cloudy. High 86°, low 61°.
0
Simi Valley, Monday, 26 October
Overcast. High 86°, low 66°.
0Simi Valley, Tuesday, 27 October
Overcast. High 86°, low 66°.
0Simi Valley, Wednesday, 28 October
Clear. High 85°, low 64°.
0Simi Valley, Thursday, 29 October
Overcast. High 77°, low 62°.
0Simi Valley, Friday, 30 October
Overcast. High 71°, low 60°.
0.42Simi Valley, Saturday, 31 October
Rain. High 72°, low 60°.
2.78Simi Valley, Sunday, 1 November
Heavy rain. High 67°, low 59°.
0Simi Valley, Monday, 2 November
Overcast. High 70°, low 58°.
0Simi Valley, Tuesday, 3 November
Light rain. High 66°, low 58°.
0.02
Simi Valley, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.01Simi Valley, Thursday, 5 November
Climate normal for this date — 60-year average.
0.03Simi Valley, Friday, 6 November
Climate normal for this date — 60-year average.
0.07Simi Valley, Saturday, 7 November
Climate normal for this date — 60-year average.
0.08Simi Valley, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Simi Valley, Monday, 9 November
Climate normal for this date — 60-year average.
0.03Simi Valley, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Simi Valley, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.04Simi Valley, Thursday, 12 November
Climate normal for this date — 60-year average.
0.03Simi Valley, Friday, 13 November
Climate normal for this date — 60-year average.
0.05Simi Valley, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Simi Valley, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Simi Valley, Monday, 16 November
Climate normal for this date — 60-year average.
0.05Simi Valley, 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 Simi Valley, 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 Simi Valley, 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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