As of 03:33 MST

Weather in Grass Valley, MT

30°Current weather

Grass Valley, Friday, 6 November, 03:33

Overcast. Feels like 30°. High 43°, low 30°.

Pressure30.33 inHg
Wind0 mph N
Humidity93%
Visibility6.2 mi
Dew point29°

Monthly outlook for Grass Valley, MT: average high 47.5°, average low 32.5°. That is 6.2° above the climate normal for November. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 7 days and 1.2 inches. The warmest day looks like 12 November (56.2°), the coolest 19 November (21.6°).

47.5°/32.5°
Average high / low
+6.2°
Above normal
2 / 7
Wet days / normal
0.3 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
6 November – 15 November49.9°37.5°+6.9°
16 November – 25 November43.5°33.4°+5.6°
26 November – 5 Decemberat normal29.4°—

November records over 66 years

58.5°1 November 1988All-time high
-22.4°23 November 1985All-time low

Climate normals and records are computed from the nearest reference point — Evaro (11 mi).

Sat, 0752° / 37°0Mostly clear
52 °Mostly clear

Grass Valley, Saturday, 7 November

Mostly clear. High 52°, low 37°.

Pressure30.21 inHg
Wind0.8 mph SE
Humidity53%
Visibility6.2 mi
Dew point33°
Sun, 0848° / 35°0Overcast
48 °Overcast

Grass Valley, Sunday, 8 November

Overcast. High 48°, low 35°.

Pressure30.12 inHg
Wind6.8 mph W
Humidity64%
Visibility6.2 mi
Dew point35°
Mon, 0945° / 32°0.03Light rain
45 °Light rain

Grass Valley, Monday, 9 November

Light rain. High 45°, low 32°.

Pressure30.18 inHg
Wind0.6 mph NW
Humidity87%
Visibility6.2 mi
Dew point36°
Tue, 1052° / 37°0Overcast
52 °Overcast

Grass Valley, Tuesday, 10 November

Overcast. High 52°, low 37°.

Pressure30.24 inHg
Wind4.3 mph SW
Humidity73%
Visibility—
Dew point37°
Wed, 1155° / 38°0Overcast
55 °Overcast

Grass Valley, Wednesday, 11 November

Overcast. High 55°, low 38°.

Pressure30.21 inHg
Wind1.8 mph E
Humidity60%
Visibility—
Dew point33°
Thu, 1256° / 37°0Overcast
56 °Overcast

Grass Valley, Thursday, 12 November

Overcast. High 56°, low 37°.

Pressure30.00 inHg
Wind4.8 mph SE
Humidity58%
Visibility—
Dew point33°
Fri, 1354° / 40°0Overcast
54 °Overcast

Grass Valley, Friday, 13 November

Overcast. High 54°, low 40°.

Pressure29.77 inHg
Wind4.1 mph SE
Humidity53%
Visibility—
Dew point32°
Sat, 1449° / 37°0.13Light rain
49 °Light rain

Grass Valley, Saturday, 14 November

Light rain. High 49°, low 37°.

Pressure29.71 inHg
Wind8.2 mph W
Humidity75%
Visibility—
Dew point37°
Sun, 1545° / 31°0.03Snow
45 °Snow

Grass Valley, Sunday, 15 November

Snow. High 45°, low 31°.

Pressure30.03 inHg
Wind9.8 mph W
Humidity73%
Visibility—
Dew point33°
Mon, 1644° / 27°0Mostly clear
44 °Mostly clear

Grass Valley, Monday, 16 November

Mostly clear. High 44°, low 27°.

Pressure30.24 inHg
Wind5.4 mph SE
Humidity66%
Visibility—
Dew point27°
Tue, 1742° / 33°0.1Snow
42 °Snow

Grass Valley, Tuesday, 17 November

Snow. High 42°, low 33°.

Pressure29.77 inHg
Wind4.1 mph W
Humidity49%
Visibility—
Dew point23°
Wed, 1841° / 24°0.02Snow
41 °Snow

Grass Valley, Wednesday, 18 November

Snow. High 41°, low 24°.

Pressure30.24 inHg
Wind6.2 mph W
Humidity68%
Visibility—
Dew point28°
Thu, 1941° / 22°0Partly cloudy
41 °Partly cloudy

Grass Valley, Thursday, 19 November

Partly cloudy. High 41°, low 22°.

Pressure30.45 inHg
Wind3.6 mph SE
Humidity59%
Visibility—
Dew point20°
Fri, 2042° / 29°0Overcast
42 °Overcast

Grass Valley, Friday, 20 November

Overcast. High 42°, low 29°.

Pressure30.39 inHg
Wind3.4 mph SE
Humidity66%
Visibility—
Dew point28°
Sat, 2150° / 31°0Overcast
50 °Overcast

Grass Valley, Saturday, 21 November

Overcast. High 50°, low 31°.

Pressure30.12 inHg
Wind8 mph W
Humidity56%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2232° / 19°0.07Climate normal
32 °Climate normal

Grass Valley, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high32°
Average low19°
Average precipitation0.07 in
Chance of precipitation43%
Record high47° (2002)
Record low-22° (1970)
Mon, 2332° / 18°0.07Climate normal
32 °Climate normal

Grass Valley, Monday, 23 November

Climate normal for this date — 60-year average.

Average high32°
Average low18°
Average precipitation0.07 in
Chance of precipitation45%
Record high46° (2017)
Record low-22° (1985)
Tue, 2431° / 20°0.13Climate normal
31 °Climate normal

Grass Valley, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high31°
Average low20°
Average precipitation0.13 in
Chance of precipitation48%
Record high43° (2017)
Record low-22° (1985)
Wed, 2531° / 18°0.13Climate normal
31 °Climate normal

Grass Valley, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high31°
Average low18°
Average precipitation0.13 in
Chance of precipitation58%
Record high44° (2022)
Record low-16° (2010)
Thu, 2630° / 17°0.08Climate normal
30 °Climate normal

Grass Valley, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high30°
Average low17°
Average precipitation0.08 in
Chance of precipitation38%
Record high50° (2017)
Record low-11° (1993)
Fri, 2730° / 17°0.07Climate normal
30 °Climate normal

Grass Valley, Friday, 27 November

Climate normal for this date — 60-year average.

Average high30°
Average low17°
Average precipitation0.07 in
Chance of precipitation48%
Record high48° (2017)
Record low-9° (1967)
Sat, 2830° / 18°0.08Climate normal
30 °Climate normal

Grass Valley, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high30°
Average low18°
Average precipitation0.08 in
Chance of precipitation42%
Record high44° (2021)
Record low-7° (1979)
Sun, 2929° / 16°0.06Climate normal
29 °Climate normal

Grass Valley, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high29°
Average low16°
Average precipitation0.06 in
Chance of precipitation40%
Record high41° (1969)
Record low-4° (2019)
Mon, 3030° / 17°0.07Climate normal
30 °Climate normal

Grass Valley, Monday, 30 November

Climate normal for this date — 60-year average.

Average high30°
Average low17°
Average precipitation0.07 in
Chance of precipitation42%
Record high43° (1969)
Record low-15° (1985)
Tue, 0130° / 15°0.1Climate normal
30 °Climate normal

Grass Valley, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high30°
Average low15°
Average precipitation0.1 in
Chance of precipitation45%
Record high50° (2021)
Record low-19° (1985)
Wed, 0230° / 16°0.15Climate normal
30 °Climate normal

Grass Valley, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high30°
Average low16°
Average precipitation0.15 in
Chance of precipitation48%
Record high47° (2021)
Record low-18° (1985)
Thu, 0330° / 17°0.08Climate normal
30 °Climate normal

Grass Valley, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high30°
Average low17°
Average precipitation0.08 in
Chance of precipitation42%
Record high40° (1975)
Record low-11° (1984)
Fri, 0428° / 14°0.08Climate normal
28 °Climate normal

Grass Valley, Friday, 4 December

Climate normal for this date — 60-year average.

Average high28°
Average low14°
Average precipitation0.08 in
Chance of precipitation43%
Record high41° (2007)
Record low-26° (1972)
Sat, 0527° / 13°0.07Climate normal
27 °Climate normal

Grass Valley, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high27°
Average low13°
Average precipitation0.07 in
Chance of precipitation42%
Record high48° (2023)
Record low-30° (1972)

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.