Miles City weather in December: Miles City, Montana: normal highs, lows, rain and records for December
Miles City in December has a normal high of 33°F and a normal low of 12°F, a daily mean of 22°F, falling from 38°F on the 1st to 30°F by the 31st. Measurable precipitation falls on 4 days in a normal December, 0.22 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 1°C and low of −11°C, 6 mm of precipitation in December.
- NOAA stationMiles City F Wiley Field
- Station IDUSW00024037
- Location46.43°N 105.88°W
- Elevation2,624 ft (800 m)
- Population8,407
- Jan 30° 9°
- Feb 35° 13°
- Mar 47° 23°
- Apr 58° 33°
- May 68° 43°
- Jun 79° 53°
- Jul 89° 60°
- Aug 87° 58°
- Sep 76° 47°
- Oct 59° 34°
- Nov 44° 21°
- Dec 33° 12°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Miles City in December?
The normal high is 33°F and the normal low 12°F, for a daily mean of 22.4°F. December is 10.3°F cooler than November and 2.9°F warmer than January. December is the 11th warmest month of the year in Miles City and the 12th wettest. Across the month the normal high falls 8°F, from 38°F on December 1 to 30°F on December 31. From one year to the next December's mean temperature typically moves about 6.5°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 16°F and 29°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 16%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 38°F | 16°F | 14% | 2% |
| December 8 | 35°F | 14°F | 13% | 2% |
| December 15 | 33°F | 12°F | 14% | 2% |
| December 22 | 31°F | 10°F | 15% | 2% |
| December 31 | 30°F | 9°F | 16% | 3% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 38°F | 16°F | 14% | 2% | 8 h 50 min |
| December 2 | 37°F | 16°F | 14% | 2% | 8 h 50 min |
| December 3 | 37°F | 15°F | 14% | 2% | 8 h 50 min |
| December 4 | 37°F | 15°F | 14% | 2% | 8 h 50 min |
| December 5 | 36°F | 15°F | 13% | 2% | 8 h 50 min |
| December 6 | 36°F | 14°F | 13% | 2% | 8 h 50 min |
| December 7 | 36°F | 14°F | 13% | 2% | 8 h 40 min |
| December 8 | 35°F | 14°F | 13% | 2% | 8 h 40 min |
| December 9 | 35°F | 13°F | 13% | 2% | 8 h 40 min |
| December 10 | 35°F | 13°F | 13% | 2% | 8 h 40 min |
| December 11 | 34°F | 13°F | 14% | 2% | 8 h 40 min |
| December 12 | 34°F | 12°F | 14% | 2% | 8 h 40 min |
| December 13 | 34°F | 12°F | 14% | 2% | 8 h 40 min |
| December 14 | 33°F | 12°F | 14% | 2% | 8 h 40 min |
| December 15 | 33°F | 12°F | 14% | 2% | 8 h 40 min |
| December 16 | 33°F | 11°F | 14% | 2% | 8 h 40 min |
| December 17 | 32°F | 11°F | 14% | 2% | 8 h 40 min |
| December 18 | 32°F | 11°F | 14% | 2% | 8 h 40 min |
| December 19 | 32°F | 11°F | 14% | 2% | 8 h 40 min |
| December 20 | 32°F | 10°F | 15% | 2% | 8 h 40 min |
| December 21 | 31°F | 10°F | 15% | 2% | 8 h 40 min |
| December 22 | 31°F | 10°F | 15% | 2% | 8 h 40 min |
| December 23 | 31°F | 10°F | 15% | 2% | 8 h 40 min |
| December 24 | 31°F | 10°F | 15% | 2% | 8 h 40 min |
| December 25 | 31°F | 10°F | 15% | 2% | 8 h 40 min |
| December 26 | 31°F | 9°F | 16% | 2% | 8 h 40 min |
| December 27 | 30°F | 9°F | 16% | 2% | 8 h 40 min |
| December 28 | 30°F | 9°F | 16% | 2% | 8 h 40 min |
| December 29 | 30°F | 9°F | 16% | 3% | 8 h 40 min |
| December 30 | 30°F | 9°F | 16% | 3% | 8 h 40 min |
| December 31 | 30°F | 9°F | 16% | 3% | 8 h 40 min |
- Normal high
- 33°FDecember average
- Normal low
- 12°FDecember average
- Precipitation
- 0.22 inmonth total
- Days with precipitation
- 40.01 inch or more
- Nights at 32°F or colder
- 30
- Daylight
- 8 h 50 min to 8 h 40 minDecember 1 to December 31
- Sunshine
- 70%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024037; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Miles City in December?
On a given December day the chance of 0.01 inch or more is 14% on average, highest around December 31 (16%). In all, 0.22 in falls on 4 days of a normal December.
In a normal December in Miles City, 30 nights fall to freezing and 12 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024037.
How humid and windy is Miles City in December?
At 3 p.m. the normal temperature is 26°F with 61% relative humidity and a dew point of 14°F; at 6 a.m. it is 15°F with 78% humidity. The wind averages 9.0 mph, most often from the west-northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 15°F | 9°F | 78% | 8.6 mph | 59% |
| 9 a.m. | 16°F | 10°F | 78% | 8.4 mph | – |
| noon | 23°F | 13°F | 66% | 10.0 mph | 57% |
| 3 p.m. | 26°F | 14°F | 61% | 9.6 mph | 55% |
| 6 p.m. | 21°F | 13°F | 70% | 8.9 mph | 58% |
| 9 p.m. | 18°F | 12°F | 74% | 8.8 mph | 60% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024037. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for December in Miles City?
The warmest December temperature on this station's record (since 1937) is 70°F, on December 1, 2021; the coldest is −38°F, on December 24, 1983. The wettest December brought 1.78 in (1968); the snowiest, 18.0 inches (1968).
The December mean against the 1991-2020 normal of 22.4°F: 2021 18.1°F (−4.3), 2022 11.9°F (−10.5), 2023 31.5°F (+9.1), 2024 28.7°F (+6.3), 2025 27.5°F (+5.1). 3 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 18.1°F | −4.3°F | 0.25 in |
| 2022 | 11.9°F | −10.5°F | 0.17 in |
| 2023 | 31.5°F | +9.1°F | 0.10 in |
| 2024 | 28.7°F | +6.3°F | 0.71 in |
| 2025 | 27.5°F | +5.1°F | 0.59 in |
Source: records: ACIS, station USW00024037; recent months: ACIS, station USW00024037. Records and recent months use complete months only.
How does December in Miles City compare across Montana?
Across the 141 places PlainClimate covers in Montana, December normal highs run from 22°F in Cooke City to 39°F in Geraldine; Miles City's is 33°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.