Climate Lewistown - Montana
| JanJa | FebFe | MarMa | AprAp | MayMa | JunJu | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 34 | 37 | 44 | 54 | 62 | 71 |
| Average low in ºF Av. low Lo | 13 | 15 | 22 | 29 | 38 | 45 |
| Av. precipitation in inch Av. precip. Pre. | 0.57 | 0.44 | 0.99 | 1.41 | 2.85 | 3.08 |
| Av. snowfall in inch Snowfall Sn | 10 | 5 | 12 | 8 | 5 | 0 |
| JulJu | AugAu | SepSe | OctOc | NovNo | DecDe | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 81 | 81 | 69 | 57 | 43 | 34 |
| Average low in ºF Av. low Lo | 50 | 49 | 41 | 31 | 21 | 13 |
| Av. precipitation in inch Av. precip. Pre. | 1.93 | 1.73 | 1.35 | 1.13 | 0.71 | 0.66 |
| Av. snowfall in inch Snowfall Sn | 0 | 0 | 2 | 4 | 8 | 10 |
What is the average weather in Lewistown, Montana?
Lewistown experiences a humid continental climate, marked by very large seasonal temperature contrasts. Summers are warm and bring the most precipitation, while winters are cold and very snowy. Despite the summer moisture, annual precipitation is low, with winter moisture often arriving as snow.
Lewistown Climate Graph - Montana Climate Chart
Daily normals Lewistown - Montana - January
Day | High ºF | Low ºF | Prec/mo inch | Prec/yr inch | Snow/mo inch | Snow/yr inch |
|---|---|---|---|---|---|---|
| 1 Jan | 34.1 | 12.2 | 0.02 | 0.02 | 0.00 | 0.00 |
| 2 Jan | 34.1 | 12.3 | 0.04 | 0.04 | 0.00 | 0.00 |
| 3 Jan | 34.2 | 12.3 | 0.06 | 0.06 | 0.00 | 0.00 |
| 4 Jan | 34.2 | 12.4 | 0.07 | 0.07 | 0.00 | 0.00 |
| 5 Jan | 34.3 | 12.4 | 0.09 | 0.09 | 0.00 | 0.00 |
| 6 Jan | 34.3 | 12.5 | 0.11 | 0.11 | 0.00 | 0.00 |
| 7 Jan | 34.4 | 12.5 | 0.13 | 0.13 | 0.00 | 0.00 |
| 8 Jan | 34.4 | 12.6 | 0.15 | 0.15 | 0.00 | 0.00 |
| 9 Jan | 34.4 | 12.6 | 0.17 | 0.17 | 0.00 | 0.00 |
| 10 Jan | 34.5 | 12.7 | 0.19 | 0.19 | 0.00 | 0.00 |
| 11 Jan | 34.5 | 12.8 | 0.21 | 0.21 | 0.00 | 0.00 |
| 12 Jan | 34.5 | 12.8 | 0.23 | 0.23 | 0.00 | 0.00 |
| 13 Jan | 34.6 | 12.9 | 0.25 | 0.25 | 0.00 | 0.00 |
| 14 Jan | 34.6 | 12.9 | 0.27 | 0.27 | 0.00 | 0.00 |
| 15 Jan | 34.6 | 13.0 | 0.29 | 0.29 | 0.00 | 0.00 |
| 16 Jan | 34.6 | 13.0 | 0.31 | 0.31 | 0.00 | 0.00 |
| 17 Jan | 34.6 | 13.1 | 0.32 | 0.32 | 0.00 | 0.00 |
| 18 Jan | 34.6 | 13.1 | 0.34 | 0.34 | 0.00 | 0.00 |
| 19 Jan | 34.6 | 13.1 | 0.36 | 0.36 | 0.00 | 0.00 |
| 20 Jan | 34.6 | 13.2 | 0.38 | 0.38 | 0.00 | 0.00 |
| 21 Jan | 34.5 | 13.2 | 0.40 | 0.40 | 0.00 | 0.00 |
| 22 Jan | 34.5 | 13.2 | 0.42 | 0.42 | 0.00 | 0.00 |
| 23 Jan | 34.5 | 13.2 | 0.43 | 0.43 | 0.00 | 0.00 |
| 24 Jan | 34.4 | 13.2 | 0.45 | 0.45 | 0.00 | 0.00 |
| 25 Jan | 34.4 | 13.2 | 0.47 | 0.47 | 0.00 | 0.00 |
| 26 Jan | 34.4 | 13.2 | 0.49 | 0.49 | 0.00 | 0.00 |
| 27 Jan | 34.3 | 13.2 | 0.51 | 0.51 | 0.00 | 0.00 |
| 28 Jan | 34.3 | 13.2 | 0.53 | 0.53 | 0.00 | 0.00 |
| 29 Jan | 34.2 | 13.2 | 0.54 | 0.54 | 0.00 | 0.00 |
| 30 Jan | 34.2 | 13.2 | 0.56 | 0.56 | 0.00 | 0.00 |
| 31 Jan | 34.2 | 13.2 | 0.58 | 0.58 | 0.00 | 0.00 |
Weather history Lewistown - August 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 Aug | 100.9 | 61.0 | 0.00 | - | - |
| 02 Aug | 84.9 | 57.0 | 0.00 | - | - |
| 03 Aug | 64.0 | 41.0 | T | - | - |
| 04 Aug | 73.0 | 37.9 | 0.00 | - | - |
| 05 Aug | 81.0 | 42.1 | 0.00 | - | - |
| 06 Aug | 82.9 | 46.0 | 0.00 | - | - |
| 07 Aug | 88.0 | 50.0 | 0.00 | - | - |
| 08 Aug | 87.1 | 50.0 | 0.00 | - | - |
| 09 Aug | 82.0 | 51.1 | 0.00 | - | - |
| 10 Aug | - | - | 0.00 | - | - |
| 11 Aug | - | - | - | - | - |
| 12 Aug | - | - | - | - | - |
| 13 Aug | - | - | - | - | - |
| 14 Aug | - | - | - | - | - |
| 15 Aug | - | - | - | - | - |
| 16 Aug | - | - | - | - | - |
| 17 Aug | - | - | - | - | - |
| 18 Aug | - | - | - | - | - |
| 19 Aug | - | - | - | - | - |
| 20 Aug | - | - | - | - | - |
| 21 Aug | - | - | - | - | - |
| 22 Aug | - | - | - | - | - |
| 23 Aug | - | - | - | - | - |
| 24 Aug | - | - | - | - | - |
| 25 Aug | - | - | - | - | - |
| 26 Aug | - | - | - | - | - |
| 27 Aug | - | - | - | - | - |
| 28 Aug | - | - | - | - | - |
| 29 Aug | - | - | - | - | - |
| 30 Aug | - | - | - | - | - |
| 31 Aug | - | - | - | - | - |
Past weather Lewistown
| Aug 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | 82.6 ºF | 34 ºF | |
| Average low temperature Av. low temp. | 48.5 ºF | 13 ºF | |
| Total precipitation Total precip. | 0.00 inch | 0.57 inch | |
| Total snowfall Total snowfall | - inch | 10 inch | |
| Highest max temperature Highest max temp. | 100.9 ºF | - | |
| Lowest max temperature Lowest max temp. | 64.0 ºF | - | |
| Highest min temperature Highest min temp. | 61.0 ºF | - | |
| Lowest min temperature Lowest min temp. | 37.9 ºF | - | |
Past weather August 2026 incomplete - Missing data
Geo Lewistown - Montana
| Country | United States | |
|---|---|---|
| State | Montana | |
| County | Fergus | |
| City | Lewistown | |
| Zip Code | 59457 | |
| Longitude | -109.47 dec. degr. | |
| Latitude | 47.05 dec. degr. | |
| Altitude - Elevation | 4154ft | |
| ICAO | - | |
| IATA | - |
Date and Time Lewistown - Montana
| Local Time | 07:52 PM | |
|---|---|---|
| Sunrise | 06:11 AM | |
| Sunset | 08:34 PM | |
| Day/Night | Day | |
| Timezone | Mountain Daylight Time | |
| Timezone DB | America - Denver |
Map of Lewistown - Montana
USGS National Map — Open interactive map
Lewistown weather averages
| Annual high temperature | 55ºF |
| Annual low temperature | 31ºF |
| Average annual precip. | 16.85 inch |
| Av. annual snowfall | 64 inch |
Station Data
Monthly averages Lewistown
Longitude: -109.467, Latitude: 47.0493
Average weather Lewistown, MT - 59457
Monthly: 1991-2020 normals
History: 2007-2026
Abbreviations
Average precipitation in : Av. precipitation in
Jan: January, Feb: February, ...Jan: January, Feb: February, ...Ja: January, Fe: February, ...