As of 21:50 MST

Weather in Grass Valley, MT

43°Current weather

Grass Valley, Friday, 13 November, 21:50

Overcast. Feels like 43°. High 50°, low 33°.

Pressure29.50 inHg
Wind1.3 mph E
Humidity74%
Visibility6.2 mi
Dew point35°

Monthly outlook for Grass Valley, MT: average high 40.5°, average low 27°. That is 3.9° above the climate normal for November. Precipitation is expected on 5 days (about 0.7 inches), against a normal of 7 days and 1.3 inches. The warmest day looks like 13 November (49.7°), the coolest 21 November (18.9°).

40.5°/27°
Average high / low
+3.9°
Above normal
5 / 7
Wet days / normal
0.7 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
13 November – 22 November40.1°35°+2.8°
23 November – 2 December41°30.3°+6°
3 December – 12 Decemberat normal27.7°—

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, 1440° / 26°0.06Snow
40 °Snow

Grass Valley, Saturday, 14 November

Snow. High 40°, low 26°.

Pressure29.85 inHg
Wind2.6 mph NW
Humidity94%
Visibility4.9 mi
Dew point38°
Sun, 1546° / 26°0Overcast
46 °Overcast

Grass Valley, Sunday, 15 November

Overcast. High 46°, low 26°.

Pressure29.97 inHg
Wind2.6 mph SE
Humidity58%
Visibility6.2 mi
Dew point28°
Mon, 1642° / 35°0.18Light rain
42 °Light rain

Grass Valley, Monday, 16 November

Light rain. High 42°, low 35°.

Pressure29.97 inHg
Wind0.8 mph SE
Humidity92%
Visibility4.3 mi
Dew point39°
Tue, 1737° / 31°0.12Light snow
37 °Light snow

Grass Valley, Tuesday, 17 November

Light snow. High 37°, low 31°.

Pressure30.00 inHg
Wind3.7 mph N
Humidity82%
Visibility6.2 mi
Dew point32°
Wed, 1838° / 27°0.02Light snow
38 °Light snow

Grass Valley, Wednesday, 18 November

Light snow. High 38°, low 27°.

Pressure30.12 inHg
Wind2.9 mph SE
Humidity94%
Visibility—
Dew point31°
Thu, 1937° / 28°0.02Light snow
37 °Light snow

Grass Valley, Thursday, 19 November

Light snow. High 37°, low 28°.

Pressure30.12 inHg
Wind2.6 mph NE
Humidity74%
Visibility—
Dew point28°
Fri, 2036° / 22°0.09Light snow
36 °Light snow

Grass Valley, Friday, 20 November

Light snow. High 36°, low 22°.

Pressure30.24 inHg
Wind3.4 mph N
Humidity75%
Visibility—
Dew point25°
Sat, 2136° / 19°0Overcast
36 °Overcast

Grass Valley, Saturday, 21 November

Overcast. High 36°, low 19°.

Pressure30.59 inHg
Wind4.1 mph SE
Humidity70%
Visibility—
Dew point20°
Sun, 2239° / 21°0Overcast
39 °Overcast

Grass Valley, Sunday, 22 November

Overcast. High 39°, low 21°.

Pressure30.47 inHg
Wind5.2 mph SE
Humidity62%
Visibility—
Dew point18°
Mon, 2338° / 22°0Overcast
38 °Overcast

Grass Valley, Monday, 23 November

Overcast. High 38°, low 22°.

Pressure30.30 inHg
Wind3.7 mph SE
Humidity63%
Visibility—
Dew point20°
Tue, 2446° / 26°0Partly cloudy
46 °Partly cloudy

Grass Valley, Tuesday, 24 November

Partly cloudy. High 46°, low 26°.

Pressure30.09 inHg
Wind2.3 mph SE
Humidity59%
Visibility—
Dew point25°
Wed, 2545° / 31°0Light snow
45 °Light snow

Grass Valley, Wednesday, 25 November

Light snow. High 45°, low 31°.

Pressure29.97 inHg
Wind2.3 mph E
Humidity79%
Visibility—
Dew point34°
Thu, 2639° / 36°0.22Snow
39 °Snow

Grass Valley, Thursday, 26 November

Snow. High 39°, low 36°.

Pressure29.80 inHg
Wind3.1 mph N
Humidity98%
Visibility—
Dew point38°
Fri, 2742° / 28°0.02Snow
42 °Snow

Grass Valley, Friday, 27 November

Snow. High 42°, low 28°.

Pressure30.21 inHg
Wind4.8 mph W
Humidity80%
Visibility—
Dew point33°
Sat, 2837° / 22°0Partly cloudy
37 °Partly cloudy

Grass Valley, Saturday, 28 November

Partly cloudy. High 37°, low 22°.

Pressure30.15 inHg
Wind3.8 mph SE
Humidity78%
Visibility—
Dew point25°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 0627° / 13°0.09Climate normal
27 °Climate normal

Grass Valley, Sunday, 6 December

Climate normal for this date — 60-year average.

Average high27°
Average low13°
Average precipitation0.09 in
Chance of precipitation38%
Record high45° (2023)
Record low-29° (2013)
Mon, 0726° / 12°0.07Climate normal
26 °Climate normal

Grass Valley, Monday, 7 December

Climate normal for this date — 60-year average.

Average high26°
Average low12°
Average precipitation0.07 in
Chance of precipitation42%
Record high44° (2024)
Record low-28° (2013)
Tue, 0826° / 12°0.07Climate normal
26 °Climate normal

Grass Valley, Tuesday, 8 December

Climate normal for this date — 60-year average.

Average high26°
Average low12°
Average precipitation0.07 in
Chance of precipitation38%
Record high51° (2020)
Record low-35° (1972)
Wed, 0927° / 12°0.07Climate normal
27 °Climate normal

Grass Valley, Wednesday, 9 December

Climate normal for this date — 60-year average.

Average high27°
Average low12°
Average precipitation0.07 in
Chance of precipitation42%
Record high45° (2020)
Record low-32° (1972)
Thu, 1029° / 15°0.09Climate normal
29 °Climate normal

Grass Valley, Thursday, 10 December

Climate normal for this date — 60-year average.

Average high29°
Average low15°
Average precipitation0.09 in
Chance of precipitation47%
Record high44° (2025)
Record low-24° (1972)
Fri, 1129° / 15°0.06Climate normal
29 °Climate normal

Grass Valley, Friday, 11 December

Climate normal for this date — 60-year average.

Average high29°
Average low15°
Average precipitation0.06 in
Chance of precipitation38%
Record high45° (2025)
Record low-21° (1961)
Sat, 1228° / 16°0.09Climate normal
28 °Climate normal

Grass Valley, Saturday, 12 December

Climate normal for this date — 60-year average.

Average high28°
Average low16°
Average precipitation0.09 in
Chance of precipitation47%
Record high41° (2025)
Record low-20° (2000)

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.