Weather in Collinsville, CA
Collinsville, Sunday, 18 October, 08:06
Clear. Feels like 58°. High 79°, low 49°.
Monthly outlook for Collinsville, CA: average high 70.6°, average low 53.2°. That is 0.4° below the climate normal for October. Precipitation is expected on 5 days (about 1.3 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 18 October (79.3°), the coolest 19 October (44.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 72.1° | 72.9° | -0.4° |
| 28 October – 6 November | 68.1° | 68.6° | -0.3° |
| 7 November – 16 November | at normal | 64.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Antioch (7 mi).
0
Collinsville, Monday, 19 October
Mostly clear. High 69°, low 44°.
0.2
Collinsville, Tuesday, 20 October
Rain. High 65°, low 52°.
0.04Collinsville, Wednesday, 21 October
Light rain. High 68°, low 54°.
0.15Collinsville, Thursday, 22 October
Light rain. High 65°, low 56°.
0
Collinsville, Friday, 23 October
Partly cloudy. High 71°, low 51°.
0Collinsville, Saturday, 24 October
Clear. High 77°, low 56°.
0Collinsville, Sunday, 25 October
Clear. High 79°, low 57°.
0Collinsville, Monday, 26 October
Clear. High 76°, low 57°.
0Collinsville, Tuesday, 27 October
Clear. High 72°, low 53°.
0
Collinsville, Wednesday, 28 October
Overcast. High 69°, low 53°.
0Collinsville, Thursday, 29 October
Overcast. High 70°, low 54°.
0Collinsville, Friday, 30 October
Partly cloudy. High 69°, low 51°.
0Collinsville, Saturday, 31 October
Overcast. High 69°, low 53°.
0.87Collinsville, Sunday, 1 November
Rain. High 59°, low 52°.
0.05Collinsville, Monday, 2 November
Light rain. High 73°, low 58°.
0.04Collinsville, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.03Collinsville, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.06Collinsville, Thursday, 5 November
Climate normal for this date — 60-year average.
0.04Collinsville, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Collinsville, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Collinsville, Sunday, 8 November
Climate normal for this date — 60-year average.
0.07Collinsville, Monday, 9 November
Climate normal for this date — 60-year average.
0.11Collinsville, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.09Collinsville, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Collinsville, Thursday, 12 November
Climate normal for this date — 60-year average.
0.13Collinsville, Friday, 13 November
Climate normal for this date — 60-year average.
0.06Collinsville, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Collinsville, Sunday, 15 November
Climate normal for this date — 60-year average.
0.07Collinsville, 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 Collinsville, 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 Collinsville, 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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