Weather in Grass Valley, CA
Grass Valley, Tuesday, 27 October, 15:51
Clear. Feels like 57°. High 59°, low 40°.
Monthly outlook for Grass Valley, CA: average high 63.6°, average low 44.5°. That is 0.6° above the climate normal for October. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 4 days and 2.3 inches. The warmest day looks like 10 November (76.5°), the coolest 28 October (37.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 27 October – 5 November | 62.5° | 64.1° | -0.9° |
| 6 November – 15 November | 65.4° | 59.2° | +3.5° |
| 16 November – 25 November | at normal | 55.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Alta Sierra (7 mi).
0Grass Valley, Wednesday, 28 October
Clear. High 63°, low 37°.
0
Grass Valley, Thursday, 29 October
Overcast. High 64°, low 44°.
0.04
Grass Valley, Friday, 30 October
Light rain. High 62°, low 48°.
0Grass Valley, Saturday, 31 October
Overcast. High 60°, low 44°.
0.08Grass Valley, Sunday, 1 November
Light rain. High 59°, low 39°.
0Grass Valley, Monday, 2 November
Overcast. High 66°, low 44°.
0.02Grass Valley, Tuesday, 3 November
Light rain. High 69°, low 48°.
0.08Grass Valley, Wednesday, 4 November
Light rain. High 60°, low 46°.
0Grass Valley, Thursday, 5 November
Overcast. High 63°, low 45°.
0Grass Valley, Friday, 6 November
Overcast. High 66°, low 47°.
0Grass Valley, Saturday, 7 November
Clear. High 64°, low 48°.
1.09Grass Valley, Sunday, 8 November
Rain. High 51°, low 45°.
0Grass Valley, Monday, 9 November
Light rain. High 61°, low 39°.
0Grass Valley, Tuesday, 10 November
Clear. High 76°, low 48°.
0Grass Valley, Wednesday, 11 November
Clear. High 74°, low 51°.
0.17
Grass Valley, Thursday, 12 November
Climate normal for this date — 60-year average.
0.26Grass Valley, Friday, 13 November
Climate normal for this date — 60-year average.
0.17
Grass Valley, Saturday, 14 November
Climate normal for this date — 60-year average.
0.13Grass Valley, Sunday, 15 November
Climate normal for this date — 60-year average.
0.23Grass Valley, Monday, 16 November
Climate normal for this date — 60-year average.
0.28Grass Valley, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.23Grass Valley, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.18Grass Valley, Thursday, 19 November
Climate normal for this date — 60-year average.
0.24Grass Valley, Friday, 20 November
Climate normal for this date — 60-year average.
0.29Grass Valley, Saturday, 21 November
Climate normal for this date — 60-year average.
0.24Grass Valley, Sunday, 22 November
Climate normal for this date — 60-year average.
0.23Grass Valley, Monday, 23 November
Climate normal for this date — 60-year average.
0.22Grass Valley, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.18Grass Valley, Wednesday, 25 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 Grass 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 Grass 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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