Weather in Grass Valley, CA
Grass Valley, Sunday, 15 November, 01:46
Overcast. Feels like 41°. High 55°, low 44°.
Monthly outlook for Grass Valley, CA: average high 52.7°, average low 39.4°. That is 1.4° below the climate normal for November. Precipitation is expected on 8 days (about 6.4 inches), against a normal of 5 days and 3.5 inches. The warmest day looks like 27 November (60.1°), the coolest 17 November (31.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 November – 24 November | 50.3° | 56.1° | -3.2° |
| 25 November – 4 December | 56.6° | 53.6° | +1.7° |
| 5 December – 14 December | at normal | 51.6° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Alta Sierra (7 mi).
0.48
Grass Valley, Monday, 16 November
Heavy rain. High 51°, low 37°.
0
Grass Valley, Tuesday, 17 November
Mostly clear. High 52°, low 31°.
0.81Grass Valley, Wednesday, 18 November
Rain. High 43°, low 39°.
1.33Grass Valley, Thursday, 19 November
Rain. High 47°, low 40°.
0.31Grass Valley, Friday, 20 November
Light rain. High 45°, low 40°.
0Grass Valley, Saturday, 21 November
Overcast. High 52°, low 39°.
0.09Grass Valley, Sunday, 22 November
Light rain. High 48°, low 39°.
0Grass Valley, Monday, 23 November
Overcast. High 55°, low 40°.
0.41Grass Valley, Tuesday, 24 November
Rain. High 56°, low 46°.
2.18Grass Valley, Wednesday, 25 November
Heavy rain. High 49°, low 42°.
0
Grass Valley, Thursday, 26 November
Clear. High 57°, low 36°.
0Grass Valley, Friday, 27 November
Clear. High 60°, low 38°.
0Grass Valley, Saturday, 28 November
Overcast. High 58°, low 39°.
0Grass Valley, Sunday, 29 November
Mostly clear. High 58°, low 41°.
0Grass Valley, Monday, 30 November
Clear. High 57°, low 40°.
0.32
Grass Valley, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.3Grass Valley, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.31Grass Valley, Thursday, 3 December
Climate normal for this date — 60-year average.
0.24
Grass Valley, Friday, 4 December
Climate normal for this date — 60-year average.
0.22Grass Valley, Saturday, 5 December
Climate normal for this date — 60-year average.
0.2Grass Valley, Sunday, 6 December
Climate normal for this date — 60-year average.
0.29Grass Valley, Monday, 7 December
Climate normal for this date — 60-year average.
0.18Grass Valley, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.24Grass Valley, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.31Grass Valley, Thursday, 10 December
Climate normal for this date — 60-year average.
0.23Grass Valley, Friday, 11 December
Climate normal for this date — 60-year average.
0.3Grass Valley, Saturday, 12 December
Climate normal for this date — 60-year average.
0.24Grass Valley, Sunday, 13 December
Climate normal for this date — 60-year average.
0.27Grass Valley, Monday, 14 December
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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