Monthly outlook for Big Sky, MT: average high 34.3°, average low 19.9°. That is 1.8° above the climate normal for November. Precipitation is expected on 6 days (about 1.8 inches), against a normal of 6 days and 1.1 inches. The warmest day looks like 16 November (45.3°), the coolest 25 November (13.5°).
34.3°/19.9°
Average high / low
+1.8°
Above normal
6 / 6
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 November – 24 November
34.7°
32.8°
+1°
25 November – 4 December
33.8°
28.4°
+3°
5 December – 14 December
at normal
26.5°
—
November records over 66 years
60.1°3 November 1962All-time high
-25.1°25 November 1993All-time low
Mon, 1645° / 28°0
45 °
Big Sky, Monday, 16 November
Overcast. High 45°, low 28°.
Pressure29.97 inHg
Wind6.8 mph S
Humidity69%
Visibility6.2 mi
Dew point24°
Tue, 1738° / 28°0.43
38 °
Big Sky, Tuesday, 17 November
Snow. High 38°, low 28°.
Pressure29.71 inHg
Wind3.5 mph SE
Humidity85%
Visibility2.9 mi
Dew point31°
Wed, 1829° / 16°0.32
29 °
Big Sky, Wednesday, 18 November
Snow. High 29°, low 16°.
Pressure30.06 inHg
Wind4.3 mph W
Humidity96%
Visibility3.9 mi
Dew point21°
Thu, 1930° / 15°0.15
30 °
Big Sky, Thursday, 19 November
Light snow. High 30°, low 15°.
Pressure30.06 inHg
Wind2.8 mph SE
Humidity92%
Visibility5.8 mi
Dew point20°
Fri, 2027° / 20°0.13
27 °
Big Sky, Friday, 20 November
Light snow. High 27°, low 20°.
Pressure29.88 inHg
Wind3.2 mph NE
Humidity96%
Visibility—
Dew point25°
Sat, 2133° / 15°0
33 °
Big Sky, Saturday, 21 November
Overcast. High 33°, low 15°.
Pressure30.12 inHg
Wind6.6 mph S
Humidity81%
Visibility—
Dew point24°
Sun, 2236° / 19°0
36 °
Big Sky, Sunday, 22 November
Overcast. High 36°, low 19°.
Pressure29.97 inHg
Wind6.1 mph S
Humidity73%
Visibility—
Dew point25°
Mon, 2333° / 16°0
33 °
Big Sky, Monday, 23 November
Overcast. High 33°, low 16°.
Pressure30.09 inHg
Wind10.2 mph S
Humidity79%
Visibility—
Dew point24°
Tue, 2434° / 23°0.03
34 °
Big Sky, Tuesday, 24 November
Light snow. High 34°, low 23°.
Pressure29.91 inHg
Wind8.9 mph S
Humidity84%
Visibility—
Dew point28°
Wed, 2531° / 13°0.16
31 °
Big Sky, Wednesday, 25 November
Light snow. High 31°, low 13°.
Pressure30.06 inHg
Wind7.7 mph W
Humidity79%
Visibility—
Dew point24°
Thu, 2631° / 17°0.02
31 °
Big Sky, Thursday, 26 November
Light snow. High 31°, low 17°.
Pressure30.27 inHg
Wind7.6 mph S
Humidity89%
Visibility—
Dew point26°
Fri, 2738° / 24°0
38 °
Big Sky, Friday, 27 November
Overcast. High 38°, low 24°.
Pressure30.09 inHg
Wind6.6 mph SE
Humidity91%
Visibility—
Dew point32°
Sat, 2835° / 25°0.55
35 °
Big Sky, Saturday, 28 November
Snow. High 35°, low 25°.
Pressure29.68 inHg
Wind5.4 mph SE
Humidity99%
Visibility—
Dew point34°
Sun, 2933° / 17°0.01
33 °
Big Sky, Sunday, 29 November
Light snow. High 33°, low 17°.
Pressure30.27 inHg
Wind4.9 mph S
Humidity87%
Visibility—
Dew point27°
Mon, 3034° / 14°0
34 °
Big Sky, Monday, 30 November
Mostly clear. High 34°, low 14°.
Pressure30.39 inHg
Wind3.8 mph S
Humidity79%
Visibility—
Dew point25°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0128° / 12°0.06
28 °
Big Sky, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high28°
Average low12°
Average precipitation0.06 in
Chance of precipitation48%
Record high47° (2021)
Record low-15° (1985)
Wed, 0229° / 13°0.09
29 °
Big Sky, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high29°
Average low13°
Average precipitation0.09 in
Chance of precipitation48%
Record high46° (2024)
Record low-14° (2009)
Thu, 0329° / 12°0.07
29 °
Big Sky, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high29°
Average low12°
Average precipitation0.07 in
Chance of precipitation42%
Record high45° (2024)
Record low-18° (2009)
Fri, 0428° / 13°0.07
28 °
Big Sky, Friday, 4 December
Climate normal for this date — 60-year average.
Average high28°
Average low13°
Average precipitation0.07 in
Chance of precipitation42%
Record high46° (1987)
Record low-19° (2013)
Sat, 0527° / 11°0.07
27 °
Big Sky, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high27°
Average low11°
Average precipitation0.07 in
Chance of precipitation40%
Record high47° (2020)
Record low-25° (1972)
Sun, 0627° / 10°0.06
27 °
Big Sky, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high27°
Average low10°
Average precipitation0.06 in
Chance of precipitation40%
Record high44° (2023)
Record low-31° (2013)
Mon, 0726° / 11°0.06
26 °
Big Sky, Monday, 7 December
Climate normal for this date — 60-year average.
Average high26°
Average low11°
Average precipitation0.06 in
Chance of precipitation40%
Record high46° (2024)
Record low-23° (2005)
Tue, 0826° / 10°0.05
26 °
Big Sky, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high26°
Average low10°
Average precipitation0.05 in
Chance of precipitation37%
Record high47° (2020)
Record low-21° (1978)
Wed, 0926° / 10°0.05
26 °
Big Sky, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high26°
Average low10°
Average precipitation0.05 in
Chance of precipitation35%
Record high45° (1981)
Record low-21° (2009)
Thu, 1028° / 12°0.05
28 °
Big Sky, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high28°
Average low12°
Average precipitation0.05 in
Chance of precipitation37%
Record high43° (1990)
Record low-25° (1972)
Fri, 1127° / 11°0.05
27 °
Big Sky, Friday, 11 December
Climate normal for this date — 60-year average.
Average high27°
Average low11°
Average precipitation0.05 in
Chance of precipitation35%
Record high44° (2025)
Record low-23° (1961)
Sat, 1227° / 11°0.08
27 °
Big Sky, Saturday, 12 December
Climate normal for this date — 60-year average.
Average high27°
Average low11°
Average precipitation0.08 in
Chance of precipitation48%
Record high46° (2014)
Record low-19° (1961)
Sun, 1327° / 11°0.07
27 °
Big Sky, Sunday, 13 December
Climate normal for this date — 60-year average.
Average high27°
Average low11°
Average precipitation0.07 in
Chance of precipitation45%
Record high44° (2025)
Record low-9° (2008)
Mon, 1426° / 11°0.07
26 °
Big Sky, Monday, 14 December
Climate normal for this date — 60-year average.
Average high26°
Average low11°
Average precipitation0.07 in
Chance of precipitation42%
Record high49° (2025)
Record low-24° (1967)
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.