Climate Westby - Montana
| JanJa | FebFe | MarMa | AprAp | MayMa | JunJu | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 19 | 25 | 37 | 54 | 65 | 74 |
| Average low in ºF Av. low Lo | -3 | 3 | 15 | 28 | 40 | 49 |
| Av. precipitation in inch Av. precip. Pre. | 0.37 | 0.26 | 0.59 | 0.84 | 2.04 | 2.83 |
| JulJu | AugAu | SepSe | OctOc | NovNo | DecDe | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 80 | 81 | 69 | 54 | 35 | 22 |
| Average low in ºF Av. low Lo | 54 | 52 | 40 | 28 | 15 | 2 |
| Av. precipitation in inch Av. precip. Pre. | 2.56 | 1.58 | 1.14 | 0.88 | 0.50 | 0.39 |
What is the average weather in Westby, Montana?
Westby experiences a cold semi-arid climate, defined by very large seasonal temperature contrasts. Summers are warm, but winters are very cold due to the inland location. The area is dry overall, with precipitation generally low and arriving in brief showers, though summer is the wettest season.
Westby Climate Graph - Montana Climate Chart
Daily normals Westby - Montana - January
Day | High ºF | Low ºF | Prec/mo inch | Prec/yr inch | Snow/mo inch | Snow/yr inch |
|---|---|---|---|---|---|---|
| 1 Jan | 18.7 | -2.5 | 0.04 | 0.04 | 0.00 | 0.00 |
| 2 Jan | 18.7 | -2.6 | 0.04 | 0.04 | 0.00 | 0.00 |
| 3 Jan | 18.6 | -2.7 | 0.04 | 0.04 | 0.00 | 0.00 |
| 4 Jan | 18.5 | -2.8 | 0.08 | 0.08 | 0.00 | 0.00 |
| 5 Jan | 18.5 | -2.9 | 0.08 | 0.08 | 0.00 | 0.00 |
| 6 Jan | 18.5 | -3.0 | 0.12 | 0.12 | 0.00 | 0.00 |
| 7 Jan | 18.4 | -3.0 | 0.12 | 0.12 | 0.00 | 0.00 |
| 8 Jan | 18.4 | -3.1 | 0.16 | 0.16 | 0.00 | 0.00 |
| 9 Jan | 18.4 | -3.1 | 0.16 | 0.16 | 0.00 | 0.00 |
| 10 Jan | 18.5 | -3.1 | 0.16 | 0.16 | 0.00 | 0.00 |
| 11 Jan | 18.5 | -3.1 | 0.20 | 0.20 | 0.00 | 0.00 |
| 12 Jan | 18.5 | -3.1 | 0.20 | 0.20 | 0.00 | 0.00 |
| 13 Jan | 18.6 | -3.1 | 0.20 | 0.20 | 0.00 | 0.00 |
| 14 Jan | 18.6 | -3.0 | 0.24 | 0.24 | 0.00 | 0.00 |
| 15 Jan | 18.7 | -3.0 | 0.24 | 0.24 | 0.00 | 0.00 |
| 16 Jan | 18.8 | -2.9 | 0.24 | 0.24 | 0.00 | 0.00 |
| 17 Jan | 18.9 | -2.9 | 0.28 | 0.28 | 0.00 | 0.00 |
| 18 Jan | 19.0 | -2.8 | 0.28 | 0.28 | 0.00 | 0.00 |
| 19 Jan | 19.1 | -2.7 | 0.31 | 0.31 | 0.00 | 0.00 |
| 20 Jan | 19.2 | -2.6 | 0.31 | 0.31 | 0.00 | 0.00 |
| 21 Jan | 19.4 | -2.5 | 0.31 | 0.31 | 0.00 | 0.00 |
| 22 Jan | 19.5 | -2.4 | 0.31 | 0.31 | 0.00 | 0.00 |
| 23 Jan | 19.7 | -2.3 | 0.31 | 0.31 | 0.00 | 0.00 |
| 24 Jan | 19.8 | -2.1 | 0.35 | 0.35 | 0.00 | 0.00 |
| 25 Jan | 20.0 | -2.0 | 0.35 | 0.35 | 0.00 | 0.00 |
| 26 Jan | 20.1 | -1.8 | 0.35 | 0.35 | 0.00 | 0.00 |
| 27 Jan | 20.3 | -1.6 | 0.35 | 0.35 | 0.00 | 0.00 |
| 28 Jan | 20.5 | -1.5 | 0.35 | 0.35 | 0.00 | 0.00 |
| 29 Jan | 20.7 | -1.3 | 0.35 | 0.35 | 0.00 | 0.00 |
| 30 Jan | 20.9 | -1.1 | 0.35 | 0.35 | 0.00 | 0.00 |
| 31 Jan | 21.1 | -0.9 | 0.35 | 0.35 | 0.00 | 0.00 |
Weather history Westby - May 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 May | 55.9 | 30.0 | 0.00 | 0.00 | 0.0 |
| 02 May | 66.9 | 42.1 | 0.00 | 0.00 | 0.0 |
| 03 May | 64.9 | 37.0 | 0.00 | 0.00 | 0.0 |
| 04 May | 75.0 | 33.1 | 0.00 | 0.00 | 0.0 |
| 05 May | 45.0 | 30.0 | 0.00 | 0.00 | 0.0 |
| 06 May | 46.0 | 21.9 | 0.00 | 0.00 | 0.0 |
| 07 May | 53.1 | 25.0 | 0.00 | 0.00 | 0.0 |
| 08 May | 63.0 | 37.0 | 0.00 | 0.00 | 0.0 |
| 09 May | 72.0 | 30.0 | 0.02 | 0.00 | 0.0 |
| 10 May | 62.1 | 30.9 | 0.00 | 0.00 | 0.0 |
| 11 May | 68.0 | 43.0 | 0.00 | 0.00 | 0.0 |
| 12 May | 78.1 | 43.0 | 0.00 | 0.00 | 0.0 |
| 13 May | 73.0 | 45.0 | 0.00 | 0.00 | 0.0 |
| 14 May | 82.0 | 52.0 | 0.00 | 0.00 | 0.0 |
| 15 May | 66.9 | 46.0 | 0.00 | 0.00 | 0.0 |
| 16 May | 64.0 | 28.0 | 0.02 | 0.00 | 0.0 |
| 17 May | 62.1 | 35.1 | 0.29 | 0.00 | 0.0 |
| 18 May | 46.0 | 33.1 | 0.05 | 0.00 | 0.0 |
| 19 May | 42.1 | 30.9 | 0.00 | 0.00 | 0.0 |
| 20 May | 60.1 | 36.0 | 0.00 | 0.00 | 0.0 |
| 21 May | 68.0 | 41.0 | 0.32 | 0.00 | 0.0 |
| 22 May | 57.9 | 42.1 | 0.02 | 0.00 | 0.0 |
| 23 May | 64.0 | 39.0 | 0.00 | 0.00 | 0.0 |
| 24 May | 71.1 | 46.9 | 0.00 | 0.00 | 0.0 |
| 25 May | 82.9 | 50.0 | 0.00 | 0.00 | 0.0 |
| 26 May | 88.0 | 55.0 | 0.00 | 0.00 | 0.0 |
| 27 May | 91.9 | 55.0 | 0.00 | 0.00 | 0.0 |
| 28 May | 91.9 | 61.0 | 0.00 | 0.00 | 0.0 |
| 29 May | 91.0 | 64.9 | 0.00 | 0.00 | 0.0 |
| 30 May | 87.1 | 57.0 | 0.00 | 0.00 | 0.0 |
| 31 May | 72.0 | 62.1 | 0.00 | 0.00 | 0.0 |
Past weather Westby
| May 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | 68.1 ºF | 19 ºF | |
| Average low temperature Av. low temp. | 41.4 ºF | -3 ºF | |
| Total precipitation Total precip. | 0.72 inch | 0.37 inch | |
| Total snowfall Total snowfall | 0.00 inch | 0 inch | |
| Highest max temperature Highest max temp. | 91.9 ºF | - | |
| Lowest max temperature Lowest max temp. | 42.1 ºF | - | |
| Highest min temperature Highest min temp. | 64.9 ºF | - | |
| Lowest min temperature Lowest min temp. | 21.9 ºF | - | |
Past weather May 2026 incomplete - Missing data
Geo Westby - Montana
| Country | United States | |
|---|---|---|
| State | Montana | |
| County | Sheridan | |
| City | Westby | |
| Zip Code | 59275 | |
| Longitude | -104.05 dec. degr. | |
| Latitude | 48.87 dec. degr. | |
| Altitude - Elevation | 2070ft | |
| ICAO | - | |
| IATA | - |
Date and Time Westby - Montana
| Local Time | 05:25 PM | |
|---|---|---|
| Sunrise | 05:57 AM | |
| Sunset | 10:04 PM | |
| Day/Night | Day | |
| Timezone | Central Daylight Time | |
| Timezone DB | America - Chicago |
Map of Westby - Montana
USGS National Map — Open interactive map
Westby weather averages
| Annual high temperature | 51ºF |
| Annual low temperature | 27ºF |
| Average annual precip. | 13.98 inch |
Station Data
Monthly averages Westby
Longitude: -104.05, Latitude: 48.87
Average weather Westby, MT - 59275
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, ...