Weather in Grass Valley, CA
Grass Valley, Friday, 30 October, 13:31
Overcast. Feels like 58°. High 59°, low 45°.
Monthly outlook for Grass Valley, CA: average high 59.6°, average low 43.2°. That is 0.9° below the climate normal for October. Precipitation is expected on 7 days (about 5.6 inches), against a normal of 4 days and 2.6 inches. The warmest day looks like 8 November (71°), the coolest 2 November (38.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 30 October – 8 November | 62° | 62.9° | -0.5° |
| 9 November – 18 November | 55.8° | 58.1° | -1.3° |
| 19 November – 28 November | at normal | 54.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Alta Sierra (7 mi).
0.79
Grass Valley, Saturday, 31 October
Rain. High 54°, low 44°.
0.02Grass Valley, Sunday, 1 November
Light rain. High 57°, low 41°.
0Grass Valley, Monday, 2 November
Overcast. High 61°, low 38°.
0.15Grass Valley, Tuesday, 3 November
Light rain. High 56°, low 41°.
0
Grass Valley, Wednesday, 4 November
Clear. High 66°, low 39°.
0Grass Valley, Thursday, 5 November
Overcast. High 64°, low 42°.
0.03Grass Valley, Friday, 6 November
Light rain. High 60°, low 44°.
0Grass Valley, Saturday, 7 November
Clear. High 71°, low 43°.
0Grass Valley, Sunday, 8 November
Clear. High 71°, low 49°.
0Grass Valley, Monday, 9 November
Overcast. High 68°, low 52°.
0.85Grass Valley, Tuesday, 10 November
Rain. High 57°, low 45°.
2.06Grass Valley, Wednesday, 11 November
Heavy rain. High 49°, low 42°.
0Grass Valley, Thursday, 12 November
Overcast. High 58°, low 40°.
0.2Grass Valley, Friday, 13 November
Rain. High 56°, low 44°.
1.44Grass Valley, Saturday, 14 November
Heavy rain. High 47°, low 42°.
0.13
Grass Valley, Sunday, 15 November
Climate normal for this date — 60-year average.
0.23
Grass 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.
0.17Grass Valley, Thursday, 26 November
Climate normal for this date — 60-year average.
0.18Grass Valley, Friday, 27 November
Climate normal for this date — 60-year average.
0.18Grass Valley, Saturday, 28 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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