Lewis and Clark County (Helena)
January
Weather in Lewis and Clark County, Montana for January 2026
Your guide to Lewis and Clark County weather in January - trends and predictions
Lewis and Clark County typically experiences moderate snowfall in January, with an average of 9 snowy days.
In general, the average temperature in Lewis and Clark County at the beginning of January is -1.6 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 0.4 °F by the end of January.
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Snow Forecast ❄️
Temperatures
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17
Dry days
5
Rainy days
9
Snow days
-1°/-11°
Temperatures
9 km/h
Avg max wind
78 %
Avg humidity
Lewis and Clark County Weather January
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Temperatures trend during January in Lewis and Clark County
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January weather in Lewis and Clark County day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Jan. 1 |  Light freezing rain | -1° /-9° | 0.4 mm | 0 cm | |
| Jan. 2 | Light freezing rain | -1° /-8° | 1.2 mm | 0 cm | |
| Jan. 3 |  Moderate or heavy snow showers | -5° /-8° | 6.5 mm | 3.5 cm | |
| Jan. 4 |  Patchy moderate snow | 0° /-10° | 2.9 mm | 1.2 cm | |
| Jan. 5 | Light freezing rain | 0° /-9° | 3 mm | 0 cm | |
| Jan. 6 | Patchy moderate snow | -2° /-7° | 2.5 mm | 1.1 cm | |
| Jan. 7 |  Overcast | -2° /-10° | 0.4 mm | 0 cm | |
| Jan. 8 | Patchy moderate snow | 0° /-11° | 4.1 mm | 1.7 cm | |
| Jan. 9 | Overcast | 0° /-6° | 1.5 mm | 1 cm | |
| Jan. 10 |  Patchy rain possible | 3° /-7° | 0.2 mm | 0 cm | |
| Jan. 11 | Patchy moderate snow | 0° /-5° | 9.4 mm | 5.5 cm | |
| Jan. 12 | Light freezing rain | -1° /-6° | 3.3 mm | 2.2 cm | |
| Jan. 13 | Light freezing rain | -1° /-8° | 0.2 mm | 0 cm | |
| Jan. 14 |  Partly cloudy | 2° /-9° | 0 mm | 0 cm | |
| Jan. 15 |  Sunny | 3° /-8° | 0 mm | 0 cm | |
| Jan. 16 |  Cloudy | 6° /-5° | 0 mm | 0 cm | |
| Jan. 17 | Light freezing rain | 0° /-14° | 1.7 mm | 0.4 cm | |
| Jan. 18 | Light freezing rain | -11° /-21° | 0.4 mm | 0 cm | |
| Jan. 19 | Light freezing rain | -8° /-21° | 0.1 mm | 0 cm | |
| Jan. 20 | Sunny | -11° /-27° | 0 mm | 0 cm | |
| Jan. 21 | Light freezing rain | 0° /-14° | 0.1 mm | 0 cm | |
| Jan. 22 | Partly cloudy | -1° /-10° | 0.1 mm | 0 cm | |
| Jan. 23 | Overcast | 0° /-14° | 0 mm | 0 cm | |
| Jan. 24 | Light freezing rain | -4° /-12° | 4.1 mm | 1.3 cm | |
| Jan. 25 | Partly cloudy | -5° /-17° | 0 mm | 0 cm | |
| Jan. 26 | Overcast | -5° /-20° | 0 mm | 0 cm | |
| Jan. 27 | Sunny | 0° /-12° | 0 mm | 0 cm | |
| Jan. 28 | Overcast | 0° /-15° | 0 mm | 0 cm | |
| Jan. 29 | Cloudy | 5° /-12° | 0 mm | 0 cm | |
| Jan. 30 | Cloudy | 4° /-9° | 0 mm | 0 cm | |
| Jan. 31 | Overcast | 4° /-6° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Lewis and Clark County in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Lewis and Clark County forecast closer to your planned date for the most up-to-date weather information.
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Lewis and Clark County in January - FAQ
What are the expected maximum and minimum temperatures in Lewis and Clark County during January?
Brace for cold days with temperatures not exceeding -1° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Lewis and Clark County during January?
In January, Lewis and Clark County can expect light to moderate rainfall, totaling 42.1 mm across approximately 5 days. Occasional showers are possible, and planning ahead for them could be helpful.
Will it snow in Lewis and Clark County in January 2026?
Lewis and Clark County experiences an average snowfall of 17.8 cm during January, occurring over 9 days.
What are the typical wind conditions in Lewis and Clark County during January?
The average wind speed in Lewis and Clark County during January is 9 km/h, suggesting breezy to windy conditions, depending on your activities.
Lewis and Clark County snow forecast January 2026
Track daily snowfall levels and discover Lewis and Clark County’s snowy potential this January ❄️
On average, Lewis and Clark County sees 9 snowy days during January, with approximately 17.8 cm of total snowfall.
January rainfall patterns in Lewis and Clark County
Explore the daily rainfall trends and prepare for Lewis and Clark Countys January weather 💧
Typically, Lewis and Clark County has 5 rainy days in January with a total of 42.1 mm of rainfall.
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Where is Lewis and Clark County?Get accurate weather forecasts for Lewis and Clark County, located at latitude 46.593 and longitude -112.036. Stay updated with localized weather information tailored for Lewis and Clark County.
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