Big Sky weather in January: Big Sky, Montana: normal highs, lows, rain and records for January
Big Sky in January has a normal high of 30°F and a normal low of 9°F, a daily mean of 19°F, rising from 28°F on the 1st to 32°F by the 31st. Measurable precipitation falls on 13 days in a normal January, 1.83 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of −1°C and low of −13°C, 46 mm of precipitation in January.
- 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 January?
The normal high is 30°F and the normal low 9°F, for a daily mean of 19.2°F. January is 1.2°F warmer than December and 2.3°F cooler than February. January is the 11th warmest month of the year in Big Sky and the 5th wettest. Across the month the normal high rises 4°F, from 28°F on January 1 to 32°F on January 31. From one year to the next January's mean temperature typically moves about 3.2°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 16°F and 22°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 46%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 28°F | 8°F | 46% | 21% |
| January 8 | 29°F | 9°F | 44% | 21% |
| January 15 | 30°F | 9°F | 42% | 20% |
| January 22 | 31°F | 9°F | 40% | 20% |
| January 31 | 32°F | 8°F | 39% | 19% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 31, coldest night January 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 28°F | 8°F | 46% | 21% | 8 h 50 min |
| January 2 | 28°F | 8°F | 46% | 21% | 8 h 50 min |
| January 3 | 28°F | 8°F | 45% | 21% | 8 h 50 min |
| January 4 | 28°F | 8°F | 45% | 21% | 8 h 50 min |
| January 5 | 28°F | 8°F | 45% | 21% | 8 h 50 min |
| January 6 | 28°F | 8°F | 45% | 21% | 8 h 50 min |
| January 7 | 29°F | 9°F | 45% | 21% | 8 h 50 min |
| January 8 | 29°F | 9°F | 44% | 21% | 9 h |
| January 9 | 29°F | 9°F | 44% | 21% | 9 h |
| January 10 | 29°F | 9°F | 43% | 21% | 9 h |
| January 11 | 29°F | 9°F | 43% | 21% | 9 h |
| January 12 | 29°F | 9°F | 43% | 20% | 9 h |
| January 13 | 30°F | 9°F | 42% | 20% | 9 h |
| January 14 | 30°F | 9°F | 42% | 20% | 9 h |
| January 15 | 30°F | 9°F | 42% | 20% | 9 h 10 min |
| January 16 | 30°F | 9°F | 41% | 20% | 9 h 10 min |
| January 17 | 30°F | 9°F | 41% | 20% | 9 h 10 min |
| January 18 | 30°F | 9°F | 41% | 20% | 9 h 10 min |
| January 19 | 30°F | 9°F | 40% | 20% | 9 h 10 min |
| January 20 | 30°F | 9°F | 40% | 20% | 9 h 20 min |
| January 21 | 31°F | 9°F | 40% | 20% | 9 h 20 min |
| January 22 | 31°F | 9°F | 40% | 20% | 9 h 20 min |
| January 23 | 31°F | 9°F | 39% | 20% | 9 h 20 min |
| January 24 | 31°F | 9°F | 39% | 20% | 9 h 20 min |
| January 25 | 31°F | 9°F | 39% | 19% | 9 h 30 min |
| January 26 | 31°F | 8°F | 39% | 19% | 9 h 30 min |
| January 27 | 31°F | 8°F | 39% | 19% | 9 h 30 min |
| January 28 | 31°F | 8°F | 39% | 19% | 9 h 30 min |
| January 29 | 31°F | 8°F | 39% | 19% | 9 h 40 min |
| January 30 | 32°F | 8°F | 39% | 19% | 9 h 40 min |
| January 31 | 32°F | 8°F | 39% | 19% | 9 h 40 min |
- Normal high
- 30°FJanuary average
- Normal low
- 9°FJanuary average
- Precipitation
- 1.83 inmonth total
- Days with precipitation
- 130.01 inch or more
- Nights at 32°F or colder
- 31
- Daylight
- 8 h 50 min to 9 h 40 minJanuary 1 to January 31
- 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 January?
On a given January day the chance of 0.01 inch or more is 42% on average, highest around January 1 (46%). In all, 1.83 in falls on 13 days of a normal January.
In a normal January in Big Sky, 31 nights fall to freezing and 17 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00240775.
What are the records for January in Big Sky?
The warmest January temperature on this station's record (since 1967) is 55°F, on January 23, 1981; the coldest is −39°F, on January 29, 1991. The wettest January brought 3.25 in (1997); the snowiest, 57.5 inches (2006).
Source: records: ACIS, station USC00240775. Records and recent months use complete months only.
How does January in Big Sky compare across Montana?
Across the 141 places PlainClimate covers in Montana, January normal highs run from 20°F in Westby to 40°F in Nye; Big Sky's is 30°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.