Hays Weather Forecast 15 Days, Weather in Hays Today
Current weather conditions and 15 day weather forecast for Hays, 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 Hays
| 14 December 2025 Sunday 6 ° C / 42.8°F  Sunny |
Feels Like : 1.4 ° C / 34.5°F Humidity : % 52 Pressure : 1010 mb Wind Speed : 23 kmph / 14.3 miles from WSW  Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15 day weather forecast for Hays, MT, USA
Weather Forecast for next 15 Days for Hays 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 Hays, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 14 December 2025 Sunday | Sunny |
-11 ° C (12.2°F) |
6.6 ° C (43.9°F) |
-0.8 ° C (30.5°F) |
% 66 | 0% | 0.2 | Sunrise:07:59 AM Sunset: 04:21 PM |
Moonrise:02:46 AM Moonset: 01:10 PM Moon Phase ( Waning Crescent ) |
|
| 15 December 2025 Monday |  Partly Cloudy |
-1.1 ° C (30°F) |
4.1 ° C (39.4°F) |
2.2 ° C (36°F) |
% 94 | 0% | 0.2 | Sunrise:08:00 AM Sunset: 04:21 PM |
Moonrise:03:55 AM Moonset: 01:27 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday | Partly Cloudy |
-1 ° C (30.2°F) |
3.7 ° C (38.7°F) |
2.7 ° C (36.9°F) |
% 82 | 0% | 0.1 | Sunrise:08:00 AM Sunset: 04:22 PM |
Moonrise:05:04 AM Moonset: 01:48 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday |  Patchy rain nearby |
-7.7 ° C (18.2°F) |
5.5 ° C (41.9°F) |
1.5 ° C (34.7°F) |
% 68 | 78% | 0.1 | Sunrise:08:01 AM Sunset: 04:22 PM |
Moonrise:06:12 AM Moonset: 02:15 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday | Sunny |
-14.3 ° C (6.2°F) |
-10.1 ° C (13.8°F) |
-10.9 ° C (12.4°F) |
% 60 | 0% | 0 | Sunrise:08:02 AM Sunset: 04:22 PM |
Moonrise:07:19 AM Moonset: 02:51 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday | Sunny |
-11.6 ° C (11.2°F) |
-3.6 ° C (25.5°F) |
-8.6 ° C (16.5°F) |
% 69 | 0% | 2 | Sunrise:08:02 AM Sunset: 04:23 PM |
Moonrise:08:19 AM Moonset: 03:37 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday | Sunny |
-11.6 ° C (11.2°F) |
0.6 ° C (33.1°F) |
-5.8 ° C (21.6°F) |
% 60 | 0% | 2 | Sunrise:08:03 AM Sunset: 04:23 PM |
Moonrise:09:09 AM Moonset: 04:35 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Partly Cloudy |
-5 ° C (22.9°F) |
1.4 ° C (34.5°F) |
-1.4 ° C (29.4°F) |
% 53 | 0% | 2 | Sunrise:08:03 AM Sunset: 04:24 PM |
Moonrise:09:49 AM Moonset: 05:42 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday |  Light freezing rain |
-20.1 ° C (-4.2°F) |
-16.5 ° C (2.3°F) |
-16.2 ° C (2.8°F) |
% 81 | 79% | 1 | Sunrise:08:04 AM Sunset: 04:24 PM |
Moonrise:10:20 AM Moonset: 06:53 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Light freezing rain |
-20.1 ° C (-4.2°F) |
-15.6 ° C (3.9°F) |
-18.2 ° C (-0.7°F) |
% 85 | 64% | 1 | Sunrise:08:04 AM Sunset: 04:25 PM |
Moonrise:10:43 AM Moonset: 08:07 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Light freezing rain |
-19.2 ° C (-2.6°F) |
-17.2 ° C (1.1°F) |
-18 ° C (-0.4°F) |
% 87 | 87% | 1 | Sunrise:08:05 AM Sunset: 04:25 PM |
Moonrise:11:03 AM Moonset: 09:21 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday |  Moderate snow |
-21.9 ° C (-7.4°F) |
-20.2 ° C (-4.3°F) |
-20.6 ° C (-5.1°F) |
% 89 | 60% | 1 | Sunrise:08:05 AM Sunset: 04:26 PM |
Moonrise:11:19 AM Moonset: 10:35 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday |  Cloudy |
-25.6 ° C (-14.1°F) |
-20.1 ° C (-4.2°F) |
-23.5 ° C (-10.4°F) |
% 90 | 0% | 1 | Sunrise:08:05 AM Sunset: 04:27 PM |
Moonrise:11:34 AM Moonset: 11:51 PM Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Partly Cloudy |
-23.6 ° C (-10.5°F) |
-15.4 ° C (4.4°F) |
-20.8 ° C (-5.5°F) |
% 90 | 0% | 2 | Sunrise:08:05 AM Sunset: 04:27 PM |
Moonrise:11:49 AM Moonset: No moonset Moon Phase ( First Quarter ) |
|
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