Lewistown Weather Forecast 15 Days, Weather in Lewistown Today
Current weather conditions and 15 day weather forecast for Lewistown, 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 Lewistown
| 06 October 2026 Tuesday 11.4 ° C / 52.5°F  Clear |
Feels Like : 8.2 ° C / 46.8°F Humidity : % 20 Pressure : 1014 mb Wind Speed : 11.2 kmph / 6.9 miles from SW  Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 4 |
15 day weather forecast for Lewistown, MT, USA
Weather Forecast for next 15 Days for Lewistown 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 Lewistown, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 06 October 2026 Tuesday | Sunny |
11 ° C (51.8°F) |
25.6 ° C (78.1°F) |
17.1 ° C (62.8°F) |
% 17 | 2% | 3.9 | Sunrise:07:23 AM Sunset: 06:48 PM |
Moonrise:02:05 AM Moonset: 05:00 PM Moon Phase ( Waning Crescent ) |
|
| 07 October 2026 Wednesday | Sunny |
9.3 ° C (48.7°F) |
22.3 ° C (72.1°F) |
14.7 ° C (58.5°F) |
% 29 | 3% | 3.7 | Sunrise:07:24 AM Sunset: 06:46 PM |
Moonrise:03:29 AM Moonset: 05:21 PM Moon Phase ( Waning Crescent ) |
|
| 08 October 2026 Thursday |  Overcast |
8 ° C (46.5°F) |
22.8 ° C (73°F) |
14 ° C (57.3°F) |
% 33 | 5% | 3.6 | Sunrise:07:26 AM Sunset: 06:44 PM |
Moonrise:04:51 AM Moonset: 05:40 PM Moon Phase ( Waning Crescent ) |
|
| 09 October 2026 Friday | Overcast |
12.1 ° C (53.8°F) |
26.1 ° C (79°F) |
18.2 ° C (64.7°F) |
% 20 | 7% | 3.2 | Sunrise:07:27 AM Sunset: 06:42 PM |
Moonrise:06:12 AM Moonset: 05:58 PM Moon Phase ( New Moon ) |
|
| 10 October 2026 Saturday |  Heavy snow |
-0.9 ° C (30.4°F) |
12.1 ° C (53.8°F) |
4.2 ° C (39.6°F) |
% 77 | 83% | 2 | Sunrise:07:28 AM Sunset: 06:40 PM |
Moonrise:07:33 AM Moonset: 06:18 PM Moon Phase ( New Moon ) |
|
| 11 October 2026 Sunday |  Moderate snow |
-1.9 ° C (28.5°F) |
-0 ° C (32°F) |
-1.2 ° C (29.9°F) |
% 95 | 88% | 1 | Sunrise:07:30 AM Sunset: 06:38 PM |
Moonrise:08:54 AM Moonset: 06:40 PM Moon Phase ( New Moon ) |
|
| 12 October 2026 Monday |  Fog |
-1.5 ° C (29.2°F) |
1.5 ° C (34.8°F) |
0.1 ° C (32.1°F) |
% 99 | 77% | 1 | Sunrise:07:31 AM Sunset: 06:36 PM |
Moonrise:10:14 AM Moonset: 07:08 PM Moon Phase ( Waxing Crescent ) |
|
| 13 October 2026 Tuesday | Fog |
0.1 ° C (32.1°F) |
6.6 ° C (44°F) |
2.9 ° C (37.3°F) |
% 96 | 37% | 2 | Sunrise:07:33 AM Sunset: 06:34 PM |
Moonrise:11:31 AM Moonset: 07:42 PM Moon Phase ( Waxing Crescent ) |
|
| 14 October 2026 Wednesday | Overcast |
3 ° C (37.3°F) |
11.8 ° C (53.2°F) |
6.2 ° C (43.1°F) |
% 70 | 18% | 3 | Sunrise:07:34 AM Sunset: 06:32 PM |
Moonrise:12:41 PM Moonset: 08:25 PM Moon Phase ( Waxing Crescent ) |
|
| 15 October 2026 Thursday | Sunny |
0.5 ° C (32.9°F) |
7.7 ° C (45.8°F) |
3.6 ° C (38.5°F) |
% 46 | 17% | 3 | Sunrise:07:35 AM Sunset: 06:30 PM |
Moonrise:01:41 PM Moonset: 09:18 PM Moon Phase ( Waxing Crescent ) |
|
| 16 October 2026 Friday | Sunny |
0.4 ° C (32.7°F) |
18.2 ° C (64.8°F) |
7.5 ° C (45.4°F) |
% 31 | 1% | 5 | Sunrise:07:37 AM Sunset: 06:29 PM |
Moonrise:02:28 PM Moonset: 10:19 PM Moon Phase ( First Quarter ) |
|
| 17 October 2026 Saturday | Sunny |
1.7 ° C (35.1°F) |
10.5 ° C (50.8°F) |
5.4 ° C (41.7°F) |
% 53 | 5% | 3 | Sunrise:07:38 AM Sunset: 06:27 PM |
Moonrise:03:05 PM Moonset: 11:26 PM Moon Phase ( First Quarter ) |
|
| 18 October 2026 Sunday | Sunny |
-0.5 ° C (31.2°F) |
9.9 ° C (49.9°F) |
3.8 ° C (38.8°F) |
% 64 | 6% | 3 | Sunrise:07:40 AM Sunset: 06:25 PM |
Moonrise:03:33 PM Moonset: Does not set today Moon Phase ( First Quarter ) |
|
| 19 October 2026 Monday | Sunny |
0.3 ° C (32.5°F) |
17.4 ° C (63.3°F) |
6.9 ° C (44.4°F) |
% 44 | 1% | 5 | Sunrise:07:41 AM Sunset: 06:23 PM |
Moonrise:03:55 PM Moonset: 12:33 AM Moon Phase ( First Quarter ) |
|
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