As of 19:02 MDT

Weather in Big Sky, MT

41°Current weather

Big Sky, Thursday, 29 October, 19:02

Overcast. Feels like 41°. High 44°, low 22°.

Pressure29.97 inHg
Wind1.6 mph SW
Humidity59%
Visibility6.2 mi
Dew point28°

Monthly outlook for Big Sky, MT: average high 39.9°, average low 24.4°. That is 1° above the climate normal for October. Precipitation is expected on 5 days (about 1.0 inches), against a normal of 6 days and 1.2 inches. The warmest day looks like 4 November (48.7°), the coolest 2 November (16.1°).

39.9°/24.4°
Average high / low
+1°
Above normal
5 / 6
Wet days / normal
1.0 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
29 October – 7 November42.1°39.2°+1.6°
8 November – 17 November36.1°35.7°+0.2°
18 November – 27 Novemberat normal30.9°—

October records over 66 years

75.6°3 October 2010All-time high
-18.6°29 October 1971All-time low
Fri, 3045° / 27°0Light snow
45 °Light snow

Big Sky, Friday, 30 October

Light snow. High 45°, low 27°.

Pressure29.91 inHg
Wind4.9 mph S
Humidity66%
Visibility6.2 mi
Dew point28°
Sat, 3140° / 31°0.07Snow
40 °Snow

Big Sky, Saturday, 31 October

Snow. High 40°, low 31°.

Pressure29.97 inHg
Wind2.1 mph S
Humidity77%
Visibility6.2 mi
Dew point32°
Sun, 0140° / 31°0.27Snow
40 °Snow

Big Sky, Sunday, 1 November

Snow. High 40°, low 31°.

Pressure29.80 inHg
Wind4.3 mph SE
Humidity84%
Visibility6.2 mi
Dew point34°
Mon, 0233° / 16°0.42Snow
33 °Snow

Big Sky, Monday, 2 November

Snow. High 33°, low 16°.

Pressure30.21 inHg
Wind6.1 mph NW
Humidity97%
Visibility2.3 mi
Dew point27°
Tue, 0345° / 16°0Partly cloudy
45 °Partly cloudy

Big Sky, Tuesday, 3 November

Partly cloudy. High 45°, low 16°.

Pressure30.18 inHg
Wind2.5 mph SW
Humidity61%
Visibility—
Dew point27°
Wed, 0449° / 26°0Mostly clear
49 °Mostly clear

Big Sky, Wednesday, 4 November

Mostly clear. High 49°, low 26°.

Pressure29.91 inHg
Wind4.1 mph E
Humidity57%
Visibility—
Dew point28°
Thu, 0543° / 30°0.01Light rain
43 °Light rain

Big Sky, Thursday, 5 November

Light rain. High 43°, low 30°.

Pressure29.80 inHg
Wind5 mph SE
Humidity86%
Visibility—
Dew point35°
Fri, 0641° / 28°0.01Light snow
41 °Light snow

Big Sky, Friday, 6 November

Light snow. High 41°, low 28°.

Pressure29.85 inHg
Wind4.7 mph S
Humidity72%
Visibility—
Dew point31°
Sat, 0740° / 26°0Mostly clear
40 °Mostly clear

Big Sky, Saturday, 7 November

Mostly clear. High 40°, low 26°.

Pressure30.09 inHg
Wind4.9 mph S
Humidity68%
Visibility—
Dew point28°
Sun, 0842° / 25°0Overcast
42 °Overcast

Big Sky, Sunday, 8 November

Overcast. High 42°, low 25°.

Pressure30.03 inHg
Wind6 mph SE
Humidity61%
Visibility—
Dew point24°
Mon, 0939° / 28°0.07Light snow
39 °Light snow

Big Sky, Monday, 9 November

Light snow. High 39°, low 28°.

Pressure29.85 inHg
Wind8.1 mph SW
Humidity76%
Visibility—
Dew point31°
Tue, 1038° / 27°0.02Light snow
38 °Light snow

Big Sky, Tuesday, 10 November

Light snow. High 38°, low 27°.

Pressure29.50 inHg
Wind10 mph S
Humidity84%
Visibility—
Dew point31°
Wed, 1133° / 21°0.12Light snow
33 °Light snow

Big Sky, Wednesday, 11 November

Light snow. High 33°, low 21°.

Pressure29.62 inHg
Wind15.9 mph W
Humidity65%
Visibility—
Dew point22°
Thu, 1233° / 19°0.03Light snow
33 °Light snow

Big Sky, Thursday, 12 November

Light snow. High 33°, low 19°.

Pressure29.77 inHg
Wind5.9 mph S
Humidity63%
Visibility—
Dew point18°
Fri, 1332° / 18°0.01Light snow
32 °Light snow

Big Sky, Friday, 13 November

Light snow. High 32°, low 18°.

Pressure29.94 inHg
Wind8.1 mph W
Humidity62%
Visibility—
Dew point18°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 1435° / 17°0.09Climate normal
35 °Climate normal

Big Sky, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high35°
Average low17°
Average precipitation0.09 in
Chance of precipitation42%
Record high58° (1999)
Record low-9° (1978)
Sun, 1535° / 16°0.04Climate normal
35 °Climate normal

Big Sky, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high35°
Average low16°
Average precipitation0.04 in
Chance of precipitation27%
Record high58° (1999)
Record low-12° (2014)
Mon, 1635° / 18°0.07Climate normal
35 °Climate normal

Big Sky, Monday, 16 November

Climate normal for this date — 60-year average.

Average high35°
Average low18°
Average precipitation0.07 in
Chance of precipitation33%
Record high52° (1999)
Record low-13° (2014)
Tue, 1734° / 17°0.06Climate normal
34 °Climate normal

Big Sky, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high34°
Average low17°
Average precipitation0.06 in
Chance of precipitation43%
Record high53° (1999)
Record low-7° (2014)
Wed, 1833° / 16°0.08Climate normal
33 °Climate normal

Big Sky, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high33°
Average low16°
Average precipitation0.08 in
Chance of precipitation45%
Record high49° (2008)
Record low-8° (1969)
Thu, 1933° / 14°0.07Climate normal
33 °Climate normal

Big Sky, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high33°
Average low14°
Average precipitation0.07 in
Chance of precipitation35%
Record high46° (1989)
Record low-5° (1985)
Fri, 2033° / 15°0.07Climate normal
33 °Climate normal

Big Sky, Friday, 20 November

Climate normal for this date — 60-year average.

Average high33°
Average low15°
Average precipitation0.07 in
Chance of precipitation35%
Record high46° (1989)
Record low-13° (1977)
Sat, 2132° / 13°0.04Climate normal
32 °Climate normal

Big Sky, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high32°
Average low13°
Average precipitation0.04 in
Chance of precipitation33%
Record high47° (2002)
Record low-18° (1977)
Sun, 2231° / 13°0.07Climate normal
31 °Climate normal

Big Sky, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high31°
Average low13°
Average precipitation0.07 in
Chance of precipitation43%
Record high46° (2017)
Record low-16° (1970)
Mon, 2331° / 11°0.08Climate normal
31 °Climate normal

Big Sky, Monday, 23 November

Climate normal for this date — 60-year average.

Average high31°
Average low11°
Average precipitation0.08 in
Chance of precipitation40%
Record high46° (1976)
Record low-16° (2003)
Tue, 2430° / 14°0.1Climate normal
30 °Climate normal

Big Sky, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high30°
Average low14°
Average precipitation0.1 in
Chance of precipitation43%
Record high44° (1976)
Record low-17° (1993)
Wed, 2529° / 12°0.11Climate normal
29 °Climate normal

Big Sky, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high29°
Average low12°
Average precipitation0.11 in
Chance of precipitation50%
Record high42° (1960)
Record low-25° (1993)
Thu, 2628° / 10°0.09Climate normal
28 °Climate normal

Big Sky, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high28°
Average low10°
Average precipitation0.09 in
Chance of precipitation50%
Record high46° (2017)
Record low-7° (1993)
Fri, 2728° / 10°0.06Climate normal
28 °Climate normal

Big Sky, Friday, 27 November

Climate normal for this date — 60-year average.

Average high28°
Average low10°
Average precipitation0.06 in
Chance of precipitation38%
Record high43° (1998)
Record low-18° (2015)

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 Big Sky, 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 Big Sky, 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.