Big Sky weather in October: Big Sky, Montana: normal highs, lows, rain and records for October
Big Sky in October has a normal high of 53°F and a normal low of 25°F, a daily mean of 39°F, falling from 61°F on the 1st to 45°F by the 31st. Measurable precipitation falls on 10 days in a normal October, 1.77 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 12°C and low of −4°C, 45 mm of precipitation in October.
- NOAA stationBig Sky (2 mi WNW)
- Station IDUSC00240775
- Location45.28°N 111.33°W
- Elevation6,590 ft (2,009 m)
- Population (census place)2,388
- Jan 30° 9°
- Feb 34° 9°
- Mar 42° 17°
- Apr 48° 23°
- May 58° 30°
- Jun 67° 36°
- Jul 78° 41°
- Aug 77° 39°
- Sep 68° 33°
- Oct 53° 25°
- Nov 37° 16°
- Dec 28° 9°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Big Sky in October?
The normal high is 53°F and the normal low 25°F, for a daily mean of 38.8°F. October is 12.0°F cooler than September and 12.6°F warmer than November. October is the 6th warmest month of the year in Big Sky and the 6th wettest. Across the month the normal high falls 16°F, from 61°F on October 1 to 45°F on October 31. From one year to the next October's mean temperature typically moves about 3.6°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 35°F and 42°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 61°F | 30°F | 30% | 16% |
| October 8 | 58°F | 27°F | 30% | 16% |
| October 15 | 53°F | 25°F | 30% | 17% |
| October 22 | 49°F | 23°F | 31% | 18% |
| October 31 | 45°F | 20°F | 33% | 19% |
Every day of October: normal high, low and chance of precipitation (warmest afternoon October 1, coldest night October 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| October 1 | 61°F | 30°F | 30% | 16% | 11 h 50 min |
| October 2 | 61°F | 29°F | 30% | 16% | 11 h 40 min |
| October 3 | 60°F | 29°F | 30% | 16% | 11 h 40 min |
| October 4 | 60°F | 29°F | 30% | 16% | 11 h 40 min |
| October 5 | 59°F | 28°F | 30% | 16% | 11 h 30 min |
| October 6 | 59°F | 28°F | 30% | 16% | 11 h 30 min |
| October 7 | 58°F | 28°F | 30% | 16% | 11 h 30 min |
| October 8 | 58°F | 27°F | 30% | 16% | 11 h 20 min |
| October 9 | 57°F | 27°F | 30% | 16% | 11 h 20 min |
| October 10 | 56°F | 27°F | 30% | 16% | 11 h 20 min |
| October 11 | 56°F | 26°F | 30% | 16% | 11 h 10 min |
| October 12 | 55°F | 26°F | 30% | 16% | 11 h 10 min |
| October 13 | 55°F | 26°F | 30% | 16% | 11 h 10 min |
| October 14 | 54°F | 25°F | 30% | 16% | 11 h 10 min |
| October 15 | 53°F | 25°F | 30% | 17% | 11 h |
| October 16 | 53°F | 25°F | 31% | 17% | 11 h |
| October 17 | 52°F | 24°F | 31% | 17% | 11 h |
| October 18 | 52°F | 24°F | 31% | 17% | 10 h 50 min |
| October 19 | 51°F | 24°F | 31% | 17% | 10 h 50 min |
| October 20 | 51°F | 23°F | 31% | 17% | 10 h 50 min |
| October 21 | 50°F | 23°F | 31% | 18% | 10 h 40 min |
| October 22 | 49°F | 23°F | 31% | 18% | 10 h 40 min |
| October 23 | 49°F | 22°F | 32% | 18% | 10 h 40 min |
| October 24 | 48°F | 22°F | 32% | 18% | 10 h 40 min |
| October 25 | 48°F | 22°F | 32% | 18% | 10 h 30 min |
| October 26 | 47°F | 22°F | 32% | 18% | 10 h 30 min |
| October 27 | 47°F | 21°F | 32% | 18% | 10 h 30 min |
| October 28 | 46°F | 21°F | 32% | 19% | 10 h 20 min |
| October 29 | 46°F | 21°F | 33% | 19% | 10 h 20 min |
| October 30 | 45°F | 20°F | 33% | 19% | 10 h 20 min |
| October 31 | 45°F | 20°F | 33% | 19% | 10 h 10 min |
- Normal high
- 53°FOctober average
- Normal low
- 25°FOctober average
- Precipitation
- 1.77 inmonth total
- Days with precipitation
- 100.01 inch or more
- Nights at 32°F or colder
- 27
- Daylight
- 11 h 50 min to 10 h 10 minOctober 1 to October 31
- Days at 70°F or more
- 3
- Sunshine
- 69%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00240775; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Big Sky in October?
On a given October day the chance of 0.01 inch or more is 31% on average, highest around October 31 (33%). In all, 1.77 in falls on 10 days of a normal October.
In a normal October in Big Sky, 27 nights fall to freezing and 1 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00240775.
What are the records for October in Big Sky?
The warmest October temperature on this station's record (since 1967) is 84°F, on October 4, 1979; the coldest is −12°F, on October 30, 1971. The wettest October brought 3.38 in (2001); the snowiest, 30.4 inches (2009).
Source: records: ACIS, station USC00240775. Records and recent months use complete months only.
How does October in Big Sky compare across Montana?
Across the 141 places PlainClimate covers in Montana, October normal highs run from 47°F in Cooke City to 64°F in Hardin; Big Sky's is 53°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.