Weather in Grass Valley, MT
Grass Valley, Tuesday, 10 November, 05:00
Overcast. Feels like 40°. High 53°, low 40°.
Monthly outlook for Grass Valley, MT: average high 48.8°, average low 32.6°. That is 7.8° above the climate normal for November. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 7 days and 1.3 inches. The warmest day looks like 13 November (56.1°), the coolest 20 November (25.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 November – 19 November | 49.7° | 36.1° | +7.5° |
| 20 November – 29 November | 47.3° | 31.4° | +8.9° |
| 30 November – 9 December | at normal | 28° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Evaro (11 mi).
0Grass Valley, Wednesday, 11 November
Overcast. High 55°, low 37°.
0Grass Valley, Thursday, 12 November
Overcast. High 55°, low 39°.
0
Grass Valley, Friday, 13 November
Partly cloudy. High 56°, low 40°.
0.07
Grass Valley, Saturday, 14 November
Light rain. High 45°, low 32°.
0
Grass Valley, Sunday, 15 November
Mostly clear. High 49°, low 32°.
0Grass Valley, Monday, 16 November
Partly cloudy. High 51°, low 34°.
0.25
Grass Valley, Tuesday, 17 November
Snow. High 45°, low 32°.
0Grass Valley, Wednesday, 18 November
Partly cloudy. High 46°, low 29°.
0Grass Valley, Thursday, 19 November
Overcast. High 43°, low 28°.
0Grass Valley, Friday, 20 November
Mostly clear. High 42°, low 25°.
0Grass Valley, Saturday, 21 November
Mostly clear. High 44°, low 26°.
0Grass Valley, Sunday, 22 November
Mostly clear. High 49°, low 29°.
0Grass Valley, Monday, 23 November
Overcast. High 50°, low 33°.
0Grass Valley, Tuesday, 24 November
Mostly clear. High 49°, low 32°.
0Grass Valley, Wednesday, 25 November
Partly cloudy. High 50°, low 33°.
0.08
Grass Valley, Thursday, 26 November
Climate normal for this date — 60-year average.
0.07Grass Valley, Friday, 27 November
Climate normal for this date — 60-year average.
0.08Grass Valley, Saturday, 28 November
Climate normal for this date — 60-year average.
0.06Grass Valley, Sunday, 29 November
Climate normal for this date — 60-year average.
0.07Grass Valley, Monday, 30 November
Climate normal for this date — 60-year average.
0.1Grass Valley, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.15Grass Valley, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.08Grass Valley, Thursday, 3 December
Climate normal for this date — 60-year average.
0.08Grass Valley, Friday, 4 December
Climate normal for this date — 60-year average.
0.07Grass Valley, Saturday, 5 December
Climate normal for this date — 60-year average.
0.09Grass Valley, Sunday, 6 December
Climate normal for this date — 60-year average.
0.07Grass Valley, Monday, 7 December
Climate normal for this date — 60-year average.
0.07Grass Valley, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.07Grass Valley, Wednesday, 9 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, MT 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, MT 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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