Westby Weather Forecast 15 Days, Weather in Westby Today
Current weather conditions and 15 day weather forecast for Westby, Montana, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at Westby
| 19 December 2025 Friday 0.3 ° C / 32.5°F  Overcast |
Feels Like : -6.6 ° C / 20.2°F Humidity : % 80 Pressure : 988 mb Wind Speed : 34.9 kmph / 21.7 miles from W  Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for Westby, MT, USA
Weather Forecast for next 15 Days for Westby including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in Westby, Montana state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 19 December 2025 Friday |  Moderate or heavy snow showers |
-17.3 ° C (0.9°F) |
2.1 ° C (35.8°F) |
-6.4 ° C (20.5°F) |
% 78 | 82% | 0.1 | Sunrise:07:47 AM Sunset: 04:02 PM |
Moonrise:08:04 AM Moonset: 03:14 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday |  Sunny |
-15.9 ° C (3.4°F) |
-12.8 ° C (9°F) |
-13.8 ° C (7.2°F) |
% 74 | 0% | 0.2 | Sunrise:07:47 AM Sunset: 04:02 PM |
Moonrise:08:54 AM Moonset: 04:11 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday |  Partly Cloudy |
-15.6 ° C (3.9°F) |
-3.7 ° C (25.3°F) |
-9.4 ° C (15.1°F) |
% 86 | 0% | 0.2 | Sunrise:07:48 AM Sunset: 04:03 PM |
Moonrise:09:34 AM Moonset: 05:19 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Overcast |
-18.2 ° C (-0.7°F) |
-5.5 ° C (22.1°F) |
-9.9 ° C (14.3°F) |
% 87 | 0% | 0.2 | Sunrise:07:48 AM Sunset: 04:03 PM |
Moonrise:10:04 AM Moonset: 06:31 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Partly Cloudy |
-18.8 ° C (-1.9°F) |
-5.5 ° C (22.1°F) |
-13.1 ° C (8.3°F) |
% 88 | 0% | 0 | Sunrise:07:49 AM Sunset: 04:04 PM |
Moonrise:10:27 AM Moonset: 07:46 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Partly Cloudy |
-11.9 ° C (10.6°F) |
-6.4 ° C (20.4°F) |
-9.7 ° C (14.6°F) |
% 89 | 0% | 2 | Sunrise:07:49 AM Sunset: 04:04 PM |
Moonrise:10:45 AM Moonset: 09:01 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Heavy snow |
-19.2 ° C (-2.6°F) |
-12.9 ° C (8.8°F) |
-14.2 ° C (6.4°F) |
% 93 | 78% | 1 | Sunrise:07:49 AM Sunset: 04:05 PM |
Moonrise:11:01 AM Moonset: 10:15 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday |  Freezing fog |
-21.8 ° C (-7.3°F) |
-15.8 ° C (3.5°F) |
-19.2 ° C (-2.5°F) |
% 97 | 0% | 1 | Sunrise:07:50 AM Sunset: 04:06 PM |
Moonrise:11:16 AM Moonset: 11:31 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday |  Light freezing rain |
-16.8 ° C (1.7°F) |
-7.6 ° C (18.4°F) |
-11.4 ° C (11.5°F) |
% 94 | 89% | 1 | Sunrise:07:50 AM Sunset: 04:06 PM |
Moonrise:11:30 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
| 28 December 2025 Sunday | Light freezing rain |
-13.6 ° C (7.5°F) |
-7.5 ° C (18.6°F) |
-9 ° C (15.8°F) |
% 93 | 66% | 1 | Sunrise:07:50 AM Sunset: 04:07 PM |
Moonrise:11:46 AM Moonset: 12:49 AM Moon Phase ( Waxing Gibbous ) |
|
| 29 December 2025 Monday | Partly Cloudy |
-19.8 ° C (-3.7°F) |
-15.3 ° C (4.5°F) |
-17.3 ° C (0.9°F) |
% 94 | 0% | 2 | Sunrise:07:50 AM Sunset: 04:08 PM |
Moonrise:12:05 PM Moonset: 02:11 AM Moon Phase ( Waxing Gibbous ) |
|
| 30 December 2025 Tuesday |  Light snow |
-20.4 ° C (-4.8°F) |
-15.4 ° C (4.3°F) |
-17.5 ° C (0.6°F) |
% 93 | 85% | 1 | Sunrise:07:50 AM Sunset: 04:09 PM |
Moonrise:12:30 PM Moonset: 03:38 AM Moon Phase ( Waxing Gibbous ) |
|
| 31 December 2025 Wednesday | Freezing fog |
-27 ° C (-16.7°F) |
-21.1 ° C (-6°F) |
-23.5 ° C (-10.4°F) |
% 95 | 0% | 1 | Sunrise:07:50 AM Sunset: 04:10 PM |
Moonrise:01:06 PM Moonset: 05:07 AM Moon Phase ( Waxing Gibbous ) |
|
| 01 January 2026 Thursday | Freezing fog |
-29 ° C (-20.2°F) |
-20.3 ° C (-4.6°F) |
-25.7 ° C (-14.2°F) |
% 97 | 0% | 1 | Sunrise:07:50 AM Sunset: 04:11 PM |
Moonrise:01:56 PM Moonset: 06:31 AM Moon Phase ( Waxing Gibbous ) |
|
Add a link to your web page; copy and paste this html to your web page