As of 05:11 MST

Weather in Sweet Grass, MT

30°Current weather

Sweet Grass, Saturday, 14 November, 05:11

Partly cloudy. Feels like 25°. High 57°, low 29°.

Pressure29.53 inHg
Wind4.6 mph S
Humidity93%
Visibility6.2 mi
Dew point28°

Monthly outlook for Sweet Grass, MT: average high 35.7°, average low 24.1°. That is 0.5° below the climate normal for November. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 14 November (56.8°), the coolest 26 November (14.7°).

35.7°/24.1°
Average high / low
−0.5°
Below normal
3 / 3
Wet days / normal
0.6 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
14 November – 23 November39.6°38.3°+0.7°
24 November – 3 December29.3°33.4°-2.3°
4 December – 13 Decemberat normal31.4°—

November records over 66 years

68.5°2 November 1981All-time high
-29°23 November 1985All-time low

Climate normals and records are computed from the nearest reference point — Sunburst (8 mi).

Sun, 1555° / 28°0.01Light rain
55 °Light rain

Sweet Grass, Sunday, 15 November

Light rain. High 55°, low 28°.

Pressure29.83 inHg
Wind13.1 mph S
Humidity45%
Visibility6.2 mi
Dew point29°
Mon, 1652° / 41°0Overcast
52 °Overcast

Sweet Grass, Monday, 16 November

Overcast. High 52°, low 41°.

Pressure29.88 inHg
Wind10.6 mph SW
Humidity47%
Visibility6.2 mi
Dew point33°
Tue, 1741° / 34°0.03Snow
41 °Snow

Sweet Grass, Tuesday, 17 November

Snow. High 41°, low 34°.

Pressure29.97 inHg
Wind1.3 mph N
Humidity66%
Visibility6.2 mi
Dew point27°
Wed, 1833° / 30°0.21Snow
33 °Snow

Sweet Grass, Wednesday, 18 November

Snow. High 33°, low 30°.

Pressure30.12 inHg
Wind9.6 mph NW
Humidity98%
Visibility—
Dew point31°
Thu, 1933° / 31°0.12Light snow
33 °Light snow

Sweet Grass, Thursday, 19 November

Light snow. High 33°, low 31°.

Pressure30.21 inHg
Wind9 mph S
Humidity95%
Visibility—
Dew point30°
Fri, 2030° / 22°0.17Snow
30 °Snow

Sweet Grass, Friday, 20 November

Snow. High 30°, low 22°.

Pressure30.06 inHg
Wind9.4 mph N
Humidity93%
Visibility—
Dew point27°
Sat, 2132° / 17°0Overcast
32 °Overcast

Sweet Grass, Saturday, 21 November

Overcast. High 32°, low 17°.

Pressure30.33 inHg
Wind7.7 mph S
Humidity86%
Visibility—
Dew point22°
Sun, 2229° / 17°0Partly cloudy
29 °Partly cloudy

Sweet Grass, Sunday, 22 November

Partly cloudy. High 29°, low 17°.

Pressure30.30 inHg
Wind12.1 mph S
Humidity87%
Visibility—
Dew point21°
Mon, 2335° / 23°0Overcast
35 °Overcast

Sweet Grass, Monday, 23 November

Overcast. High 35°, low 23°.

Pressure30.09 inHg
Wind14.3 mph S
Humidity91%
Visibility—
Dew point32°
Tue, 2433° / 20°0Clear
33 °Clear

Sweet Grass, Tuesday, 24 November

Clear. High 33°, low 20°.

Pressure30.36 inHg
Wind8.2 mph S
Humidity79%
Visibility—
Dew point22°
Wed, 2524° / 19°0Light snow
24 °Light snow

Sweet Grass, Wednesday, 25 November

Light snow. High 24°, low 19°.

Pressure30.45 inHg
Wind16.3 mph SE
Humidity86%
Visibility—
Dew point19°
Thu, 2625° / 15°0Clear
25 °Clear

Sweet Grass, Thursday, 26 November

Clear. High 25°, low 15°.

Pressure30.09 inHg
Wind13.8 mph S
Humidity86%
Visibility—
Dew point17°
Fri, 2732° / 18°0Clear
32 °Clear

Sweet Grass, Friday, 27 November

Clear. High 32°, low 18°.

Pressure30.03 inHg
Wind8.2 mph SW
Humidity79%
Visibility—
Dew point22°
Sat, 2833° / 22°0Clear
33 °Clear

Sweet Grass, Saturday, 28 November

Clear. High 33°, low 22°.

Pressure29.91 inHg
Wind7.6 mph SW
Humidity82%
Visibility—
Dew point24°
Sun, 2929° / 22°0.02Light snow
29 °Light snow

Sweet Grass, Sunday, 29 November

Light snow. High 29°, low 22°.

Pressure30.06 inHg
Wind4.9 mph NW
Humidity92%
Visibility—
Dew point25°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 3033° / 18°0.02Climate normal
33 °Climate normal

Sweet Grass, Monday, 30 November

Climate normal for this date — 60-year average.

Average high33°
Average low18°
Average precipitation0.02 in
Chance of precipitation17%
Record high54° (1969)
Record low-16° (2014)
Tue, 0132° / 17°0.02Climate normal
32 °Climate normal

Sweet Grass, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high32°
Average low17°
Average precipitation0.02 in
Chance of precipitation17%
Record high58° (2021)
Record low-24° (1985)
Wed, 0232° / 17°0.04Climate normal
32 °Climate normal

Sweet Grass, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high32°
Average low17°
Average precipitation0.04 in
Chance of precipitation27%
Record high53° (2021)
Record low-30° (1985)
Thu, 0333° / 17°0.02Climate normal
33 °Climate normal

Sweet Grass, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high33°
Average low17°
Average precipitation0.02 in
Chance of precipitation15%
Record high54° (1987)
Record low-18° (1972)
Fri, 0433° / 16°0.02Climate normal
33 °Climate normal

Sweet Grass, Friday, 4 December

Climate normal for this date — 60-year average.

Average high33°
Average low16°
Average precipitation0.02 in
Chance of precipitation23%
Record high53° (1989)
Record low-26° (1972)
Sat, 0531° / 15°0.03Climate normal
31 °Climate normal

Sweet Grass, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high31°
Average low15°
Average precipitation0.03 in
Chance of precipitation15%
Record high56° (2023)
Record low-24° (2013)
Sun, 0630° / 15°0.03Climate normal
30 °Climate normal

Sweet Grass, Sunday, 6 December

Climate normal for this date — 60-year average.

Average high30°
Average low15°
Average precipitation0.03 in
Chance of precipitation18%
Record high54° (1987)
Record low-28° (1972)
Mon, 0730° / 14°0.01Climate normal
30 °Climate normal

Sweet Grass, Monday, 7 December

Climate normal for this date — 60-year average.

Average high30°
Average low14°
Average precipitation0.01 in
Chance of precipitation13%
Record high50° (2017)
Record low-37° (2013)
Tue, 0831° / 15°0.02Climate normal
31 °Climate normal

Sweet Grass, Tuesday, 8 December

Climate normal for this date — 60-year average.

Average high31°
Average low15°
Average precipitation0.02 in
Chance of precipitation18%
Record high54° (2020)
Record low-33° (1972)
Wed, 0932° / 16°0.02Climate normal
32 °Climate normal

Sweet Grass, Wednesday, 9 December

Climate normal for this date — 60-year average.

Average high32°
Average low16°
Average precipitation0.02 in
Chance of precipitation12%
Record high54° (1979)
Record low-34° (1977)
Thu, 1033° / 17°0.03Climate normal
33 °Climate normal

Sweet Grass, Thursday, 10 December

Climate normal for this date — 60-year average.

Average high33°
Average low17°
Average precipitation0.03 in
Chance of precipitation20%
Record high53° (2014)
Record low-21° (1961)
Fri, 1133° / 17°0.03Climate normal
33 °Climate normal

Sweet Grass, Friday, 11 December

Climate normal for this date — 60-year average.

Average high33°
Average low17°
Average precipitation0.03 in
Chance of precipitation25%
Record high49° (1993)
Record low-23° (1961)
Sat, 1231° / 17°0.04Climate normal
31 °Climate normal

Sweet Grass, Saturday, 12 December

Climate normal for this date — 60-year average.

Average high31°
Average low17°
Average precipitation0.04 in
Chance of precipitation28%
Record high50° (2014)
Record low-19° (1961)
Sun, 1331° / 15°0.03Climate normal
31 °Climate normal

Sweet Grass, Sunday, 13 December

Climate normal for this date — 60-year average.

Average high31°
Average low15°
Average precipitation0.03 in
Chance of precipitation13%
Record high53° (1998)
Record low-18° (2009)

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 Sweet Grass, 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 Sweet Grass, 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.