Boulder Weather Forecast 15 Days, Weather in Boulder Today
Current weather conditions and 15 day weather forecast for Boulder, 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 Boulder
| 03 August 2026 Monday 16.3 ° C / 61.4°F  Sunny |
Feels Like : 12.3 ° C / 54.1°F Humidity : % 35 Pressure : 1020 mb Wind Speed : 11.2 kmph / 6.9 miles from N  Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 9 |
15 day weather forecast for Boulder, MT, USA
Weather Forecast for next 15 Days for Boulder 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 Boulder, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 03 August 2026 Monday | Sunny |
6.2 ° C (43.1°F) |
19.9 ° C (67.8°F) |
12.1 ° C (53.7°F) |
% 43 | 2% | 5.2 | Sunrise:06:12 AM Sunset: 08:56 PM |
Moonrise:10:50 PM Moonset: 11:45 AM Moon Phase ( Last Quarter ) |
|
| 04 August 2026 Tuesday | Sunny |
3.8 ° C (38.9°F) |
24.6 ° C (76.3°F) |
14 ° C (57.1°F) |
% 37 | 1% | 5.9 | Sunrise:06:14 AM Sunset: 08:55 PM |
Moonrise:11:09 PM Moonset: 12:55 PM Moon Phase ( Last Quarter ) |
|
| 05 August 2026 Wednesday | Sunny |
8.1 ° C (46.7°F) |
28 ° C (82.5°F) |
18.1 ° C (64.5°F) |
% 22 | 0% | 6.5 | Sunrise:06:15 AM Sunset: 08:53 PM |
Moonrise:11:33 PM Moonset: 02:07 PM Moon Phase ( Last Quarter ) |
|
| 06 August 2026 Thursday | Sunny |
10.7 ° C (51.2°F) |
32 ° C (89.6°F) |
21.2 ° C (70.1°F) |
% 18 | 0% | 6.4 | Sunrise:06:16 AM Sunset: 08:52 PM |
Moonrise:Does not rise today Moonset: 03:23 PM Moon Phase ( Last Quarter ) |
|
| 07 August 2026 Friday | Sunny |
13.6 ° C (56.5°F) |
34.5 ° C (94.2°F) |
23.4 ° C (74.1°F) |
% 16 | 0% | 8 | Sunrise:06:17 AM Sunset: 08:50 PM |
Moonrise:12:04 AM Moonset: 04:39 PM Moon Phase ( Waning Crescent ) |
|
| 08 August 2026 Saturday | Sunny |
11.2 ° C (52.2°F) |
30.8 ° C (87.5°F) |
20.8 ° C (69.5°F) |
% 20 | 0% | 8 | Sunrise:06:18 AM Sunset: 08:49 PM |
Moonrise:12:46 AM Moonset: 05:51 PM Moon Phase ( Waning Crescent ) |
|
| 09 August 2026 Sunday | Sunny |
12.4 ° C (54.4°F) |
30.6 ° C (87.2°F) |
20.7 ° C (69.3°F) |
% 21 | 1% | 8 | Sunrise:06:20 AM Sunset: 08:47 PM |
Moonrise:01:42 AM Moonset: 06:52 PM Moon Phase ( Waning Crescent ) |
|
| 10 August 2026 Monday | Sunny |
9.7 ° C (49.4°F) |
29 ° C (84.2°F) |
18.7 ° C (65.6°F) |
% 39 | 1% | 7 | Sunrise:06:21 AM Sunset: 08:46 PM |
Moonrise:02:55 AM Moonset: 07:40 PM Moon Phase ( New Moon ) |
|
| 11 August 2026 Tuesday | Sunny |
8.6 ° C (47.5°F) |
30.9 ° C (87.6°F) |
19.1 ° C (66.4°F) |
% 48 | 2% | 8 | Sunrise:06:22 AM Sunset: 08:44 PM |
Moonrise:04:19 AM Moonset: 08:17 PM Moon Phase ( New Moon ) |
|
| 12 August 2026 Wednesday | Sunny |
11 ° C (51.8°F) |
29.2 ° C (84.6°F) |
19.6 ° C (67.4°F) |
% 23 | 0% | 7 | Sunrise:06:23 AM Sunset: 08:43 PM |
Moonrise:05:47 AM Moonset: 08:45 PM Moon Phase ( New Moon ) |
|
| 13 August 2026 Thursday | Sunny |
9.4 ° C (48.9°F) |
32.5 ° C (90.4°F) |
20.6 ° C (69°F) |
% 19 | 1% | 8 | Sunrise:06:25 AM Sunset: 08:41 PM |
Moonrise:07:15 AM Moonset: 09:07 PM Moon Phase ( New Moon ) |
|
| 14 August 2026 Friday |  Partly Cloudy |
14.3 ° C (57.8°F) |
32.9 ° C (91.3°F) |
23.1 ° C (73.5°F) |
% 24 | 4% | 8 | Sunrise:06:26 AM Sunset: 08:39 PM |
Moonrise:08:39 AM Moonset: 09:27 PM Moon Phase ( Waxing Crescent ) |
|
| 15 August 2026 Saturday | Sunny |
12.7 ° C (54.9°F) |
29 ° C (84.3°F) |
20.4 ° C (68.6°F) |
% 35 | 1% | 7 | Sunrise:06:27 AM Sunset: 08:38 PM |
Moonrise:10:00 AM Moonset: 09:46 PM Moon Phase ( Waxing Crescent ) |
|
| 16 August 2026 Sunday | Sunny |
8.3 ° C (46.9°F) |
30.7 ° C (87.2°F) |
19.3 ° C (66.7°F) |
% 43 | 2% | 8 | Sunrise:06:28 AM Sunset: 08:36 PM |
Moonrise:11:19 AM Moonset: 10:06 PM Moon Phase ( Waxing Crescent ) |
|
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