Weather in Grass Valley, OR
Grass Valley, Tuesday, 20 October, 01:06
Overcast. Feels like 45°. High 62°, low 41°.
Monthly outlook for Grass Valley, OR: average high 57.7°, average low 42.6°. That is 2° above the climate normal for October. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 5 days and 1.0 inches. The warmest day looks like 21 October (67.9°), the coolest 24 October (35.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 59.1° | 55.8° | +1.8° |
| 30 October – 8 November | 55.4° | 50.6° | +2.6° |
| 9 November – 18 November | at normal | 47° | — |
October records over 66 years
0
Grass Valley, Wednesday, 21 October
Clear. High 68°, low 40°.
0Grass Valley, Thursday, 22 October
Overcast. High 58°, low 48°.
0
Grass Valley, Friday, 23 October
Mostly clear. High 53°, low 41°.
0Grass Valley, Saturday, 24 October
Overcast. High 59°, low 35°.
0Grass Valley, Sunday, 25 October
Overcast. High 59°, low 41°.
0Grass Valley, Monday, 26 October
Overcast. High 57°, low 42°.
0
Grass Valley, Tuesday, 27 October
Partly cloudy. High 57°, low 41°.
0Grass Valley, Wednesday, 28 October
Overcast. High 57°, low 42°.
0Grass Valley, Thursday, 29 October
Overcast. High 60°, low 42°.
0Grass Valley, Friday, 30 October
Overcast. High 56°, low 40°.
0Grass Valley, Saturday, 31 October
Overcast. High 57°, low 42°.
0Grass Valley, Sunday, 1 November
Overcast. High 63°, low 43°.
0.07
Grass Valley, Monday, 2 November
Light rain. High 57°, low 49°.
0.08Grass Valley, Tuesday, 3 November
Light rain. High 50°, low 47°.
0.11Grass Valley, Wednesday, 4 November
Light rain. High 48°, low 47°.
0.07
Grass Valley, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09Grass Valley, Friday, 6 November
Climate normal for this date — 60-year average.
0.1Grass Valley, Saturday, 7 November
Climate normal for this date — 60-year average.
0.07Grass Valley, Sunday, 8 November
Climate normal for this date — 60-year average.
0.06Grass Valley, Monday, 9 November
Climate normal for this date — 60-year average.
0.07Grass Valley, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08Grass Valley, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Grass Valley, Thursday, 12 November
Climate normal for this date — 60-year average.
0.09Grass Valley, Friday, 13 November
Climate normal for this date — 60-year average.
0.04Grass Valley, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Grass Valley, Sunday, 15 November
Climate normal for this date — 60-year average.
0.07Grass Valley, Monday, 16 November
Climate normal for this date — 60-year average.
0.08Grass Valley, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.09Grass Valley, Wednesday, 18 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, OR 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, OR 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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