Weather in Simi Valley, CA
Simi Valley, Sunday, 18 October, 17:38
Clear. Feels like 78°. High 85°, low 62°.
Monthly outlook for Simi Valley, CA: average high 74.8°, average low 57.7°. That is 1.2° below the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 18 October (84.6°), the coolest 31 October (50.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 78.5° | 78° | +0.3° |
| 28 October – 6 November | 68.6° | 75° | -3.5° |
| 7 November – 16 November | at normal | 71.3° | — |
October records over 66 years
0Simi Valley, Monday, 19 October
Clear. High 84°, low 65°.
0Simi Valley, Tuesday, 20 October
Clear. High 82°, low 60°.
0.44
Simi Valley, Wednesday, 21 October
Heavy rain. High 69°, low 57°.
0.31Simi Valley, Thursday, 22 October
Rain. High 67°, low 55°.
0Simi Valley, Friday, 23 October
Clear. High 73°, low 53°.
0Simi Valley, Saturday, 24 October
Clear. High 82°, low 57°.
0Simi Valley, Sunday, 25 October
Clear. High 85°, low 63°.
0
Simi Valley, Monday, 26 October
Overcast. High 81°, low 63°.
0Simi Valley, Tuesday, 27 October
Overcast. High 79°, low 61°.
0Simi Valley, Wednesday, 28 October
Overcast. High 72°, low 59°.
0
Simi Valley, Thursday, 29 October
Partly cloudy. High 67°, low 56°.
0Simi Valley, Friday, 30 October
Partly cloudy. High 60°, low 52°.
0Simi Valley, Saturday, 31 October
Overcast. High 65°, low 51°.
0Simi Valley, Sunday, 1 November
Clear. High 71°, low 52°.
0Simi Valley, Monday, 2 November
Clear. High 78°, low 56°.
0
Simi Valley, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02Simi 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.
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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