Lewistown weather in January: Lewistown, Montana: normal highs, lows, rain and records for January
Lewistown in January has a normal high of 34°F and a normal low of 13°F, a daily mean of 24°F, holding near 34°F all month. Measurable precipitation falls on 8 days in a normal January, 0.58 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 1°C and low of −11°C, 15 mm of precipitation in January.
- NOAA stationLewistown Municipal Airport
- Station IDUSW00024036
- Location47.05°N 109.46°W
- Elevation4,145 ft (1,263 m)
- Population6,204
- Jan 34° 13°
- Feb 35° 14°
- Mar 44° 21°
- Apr 53° 29°
- May 63° 37°
- Jun 71° 45°
- Jul 82° 51°
- Aug 81° 50°
- Sep 70° 42°
- Oct 56° 31°
- Nov 43° 21°
- Dec 35° 14°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Lewistown in January?
The normal high is 34°F and the normal low 13°F, for a daily mean of 23.7°F. January is 0.6°F cooler than December and 0.9°F cooler than February. January is the 12th warmest month of the year in Lewistown and the 10th wettest. From one year to the next January's mean temperature typically moves about 4.9°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 19°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 26%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 34°F | 12°F | 25% | 7% |
| January 8 | 34°F | 13°F | 25% | 7% |
| January 15 | 35°F | 13°F | 25% | 7% |
| January 22 | 35°F | 13°F | 25% | 7% |
| January 31 | 34°F | 13°F | 26% | 6% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 13, coldest night January 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 34°F | 12°F | 25% | 7% | 8 h 30 min |
| January 2 | 34°F | 12°F | 25% | 7% | 8 h 40 min |
| January 3 | 34°F | 12°F | 25% | 7% | 8 h 40 min |
| January 4 | 34°F | 12°F | 25% | 7% | 8 h 40 min |
| January 5 | 34°F | 12°F | 25% | 7% | 8 h 40 min |
| January 6 | 34°F | 13°F | 25% | 7% | 8 h 40 min |
| January 7 | 34°F | 13°F | 25% | 7% | 8 h 40 min |
| January 8 | 34°F | 13°F | 25% | 7% | 8 h 40 min |
| January 9 | 34°F | 13°F | 25% | 7% | 8 h 40 min |
| January 10 | 35°F | 13°F | 25% | 7% | 8 h 50 min |
| January 11 | 35°F | 13°F | 25% | 7% | 8 h 50 min |
| January 12 | 35°F | 13°F | 25% | 7% | 8 h 50 min |
| January 13 | 35°F | 13°F | 25% | 7% | 8 h 50 min |
| January 14 | 35°F | 13°F | 25% | 7% | 8 h 50 min |
| January 15 | 35°F | 13°F | 25% | 7% | 8 h 50 min |
| January 16 | 35°F | 13°F | 25% | 7% | 9 h |
| January 17 | 35°F | 13°F | 25% | 7% | 9 h |
| January 18 | 35°F | 13°F | 25% | 7% | 9 h |
| January 19 | 35°F | 13°F | 25% | 7% | 9 h |
| January 20 | 35°F | 13°F | 25% | 7% | 9 h |
| January 21 | 35°F | 13°F | 25% | 7% | 9 h 10 min |
| January 22 | 35°F | 13°F | 25% | 7% | 9 h 10 min |
| January 23 | 35°F | 13°F | 25% | 7% | 9 h 10 min |
| January 24 | 34°F | 13°F | 25% | 7% | 9 h 10 min |
| January 25 | 34°F | 13°F | 25% | 6% | 9 h 20 min |
| January 26 | 34°F | 13°F | 25% | 6% | 9 h 20 min |
| January 27 | 34°F | 13°F | 25% | 6% | 9 h 20 min |
| January 28 | 34°F | 13°F | 26% | 6% | 9 h 20 min |
| January 29 | 34°F | 13°F | 26% | 6% | 9 h 30 min |
| January 30 | 34°F | 13°F | 26% | 6% | 9 h 30 min |
| January 31 | 34°F | 13°F | 26% | 6% | 9 h 30 min |
- Normal high
- 34°FJanuary average
- Normal low
- 13°FJanuary average
- Precipitation
- 0.58 inmonth total
- Days with precipitation
- 80.01 inch or more
- Nights at 32°F or colder
- 29
- Daylight
- 8 h 30 min to 9 h 30 minJanuary 1 to January 31
- Sunshine
- 73%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024036; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Lewistown in January?
On a given January day the chance of 0.01 inch or more is 25% on average, highest around January 31 (26%). In all, 0.58 in falls on 8 days of a normal January.
In a normal January in Lewistown, 29 nights fall to freezing and 11 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024036.
How humid and windy is Lewistown in January?
At 3 p.m. the normal temperature is 31°F with 55% relative humidity and a dew point of 17°F; at 6 a.m. it is 21°F with 71% humidity. The wind averages 10.0 mph, most often from the west in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 21°F | 13°F | 71% | 9.9 mph | – |
| 9 a.m. | 23°F | 14°F | 69% | 9.5 mph | – |
| noon | 30°F | 16°F | 57% | 10.4 mph | – |
| 3 p.m. | 31°F | 17°F | 55% | 10.5 mph | – |
| 6 p.m. | 26°F | 16°F | 65% | 10.1 mph | – |
| 9 p.m. | 23°F | 15°F | 69% | 10.0 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024036. 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 January in Lewistown?
The warmest January temperature on this station's record (since 1896) is 73°F, on January 22, 1981; the coldest is −46°F, on January 28, 1929. The wettest January brought 2.75 in (1978); the snowiest, 40.0 inches (1957).
The January mean against the 1991-2020 normal of 23.7°F: 2021 28.2°F (+4.5), 2022 25.8°F (+2.1), 2023 26.6°F (+2.9), 2024 19.9°F (−3.8), 2025 19.2°F (−4.5), 2026 30.2°F (+6.5). 4 of 6 ran warmer than normal.
| January | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 28.2°F | +4.5°F | 0.46 in |
| 2022 | 25.8°F | +2.1°F | 0.33 in |
| 2023 | 26.6°F | +2.9°F | 1.06 in |
| 2024 | 19.9°F | −3.8°F | 0.09 in |
| 2025 | 19.2°F | −4.5°F | 0.84 in |
| 2026 | 30.2°F | +6.5°F | 0.13 in |
Source: records: ACIS, station USW00024036; recent months: ACIS, station USW00024036. Records and recent months use complete months only.
How does January in Lewistown 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; Lewistown's is 34°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.