Weather in Walnut Creek, CA
Walnut Creek, Wednesday, 28 October, 07:53
Clear. Feels like 48°. High 70°, low 48°.
Monthly outlook for Walnut Creek, CA: average high 68°, average low 54.1°. That is 0.2° above the climate normal for October. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 3 days and 0.9 inches. The warmest day looks like 3 November (75.9°), the coolest 1 November (47.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 69.4° | 69.1° | +0.2° |
| 7 November – 16 November | 65.7° | 64.9° | +0.5° |
| 17 November – 26 November | at normal | 61.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Contra Costa Centre (2 mi).
0
Walnut Creek, Thursday, 29 October
Overcast. High 71°, low 48°.
0Walnut Creek, Friday, 30 October
Clear. High 69°, low 53°.
0Walnut Creek, Saturday, 31 October
Overcast. High 69°, low 50°.
0Walnut Creek, Sunday, 1 November
Clear. High 67°, low 47°.
0
Walnut Creek, Monday, 2 November
Mostly clear. High 71°, low 51°.
0Walnut Creek, Tuesday, 3 November
Overcast. High 76°, low 58°.
0.04
Walnut Creek, Wednesday, 4 November
Light rain. High 68°, low 59°.
0Walnut Creek, Thursday, 5 November
Overcast. High 67°, low 57°.
0Walnut Creek, Friday, 6 November
Overcast. High 65°, low 58°.
0.88Walnut Creek, Saturday, 7 November
Heavy rain. High 62°, low 57°.
0Walnut Creek, Sunday, 8 November
Mostly clear. High 66°, low 55°.
0Walnut Creek, Monday, 9 November
Overcast. High 68°, low 54°.
0.06Walnut Creek, Tuesday, 10 November
Light rain. High 64°, low 58°.
0.07Walnut Creek, Wednesday, 11 November
Light rain. High 71°, low 59°.
0.65Walnut Creek, Thursday, 12 November
Heavy rain. High 64°, low 55°.
0.12
Walnut Creek, Friday, 13 November
Climate normal for this date — 60-year average.
0.06Walnut Creek, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Walnut Creek, Sunday, 15 November
Climate normal for this date — 60-year average.
0.07Walnut Creek, Monday, 16 November
Climate normal for this date — 60-year average.
0.11Walnut Creek, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06Walnut Creek, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.05Walnut Creek, Thursday, 19 November
Climate normal for this date — 60-year average.
0.09Walnut Creek, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Walnut Creek, Saturday, 21 November
Climate normal for this date — 60-year average.
0.08Walnut Creek, Sunday, 22 November
Climate normal for this date — 60-year average.
0.04Walnut Creek, Monday, 23 November
Climate normal for this date — 60-year average.
0.07Walnut Creek, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.05Walnut Creek, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.05Walnut Creek, Thursday, 26 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 Walnut Creek, 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 Walnut Creek, 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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